Overclocking 940XM

Hai,

I've been searching for hours on Google and this forum but have been unable to find detailed information about what you more you can get out of the i7 940xm. Like the 5850m, I would really like to know how to get that little extra out of my 940xm without having to perform physical surgery on my laptop (think: thermal paste).

Pretty please?

//Solly

 

You havent searched hard enough :x.

The best way is to download ThrottleStop (dont forget to donate if you like the app) and play around with the turbo boost multipliers. You can have 25x running on all 4 cores when the system is being pushed.

 

You may also have a SetFSB overclockable mother board, check out this thread to find out:
M15x FSB Overclocking (not only 920XM!)

 

ThrottleStop is the bomb for o/c'ing the 920/940XM's. You're not talking about a little bit more performance; with T-Stop you can unleash the beast. There is extensive guidance and discussion in this forum and the M17x forum, particularly in the benchmark threads, but also scattered throughout.

 

I appear to be unable to go above 17x on multiplyers, though.

 

there is another hidden menu, right click the middle empty spot and you will see another little menu pop up.

 

Am I doing it right?

(TDP@85 | TDC@80, once limit at 27 and then 28)

I wonder what the critical temps are, and how far my basic adapter can go...I think I read somewhere in the high 90's?

 

Mostly. Raise the Chipset Modulation to 100% or turn off T-Stop. The changes to multipliers and TDP/TDC are sticky. Once set, they stay set until changed or a reboot. They do not depend on TS being enabled. Try with TS in monitoring mode (Turn Off). Also download wPrime 1.55. That's the one everyone uses for benchmarking.

You will find that you can operate at only 24x given your current settings.

 

make sure when you are running TS stick with all cores below 26x for now and run wprime 1.55 and click on "advanced settings" and change it to 8 cores. Then all 8 cores will be running and loaded down 100%. For you tdp and tdc i would run it at 85-70 and if you want you can increase to 90/75 but start at lower which stock is 62/62 and you want to increase tdp and tdc slowly but usually there is a 5-15 watt gap between tdp and tdc. You only want to use enough tdp/tdc to make the processor hit 26x and be stable anything extra means unnecessary heat and power.


look at this attachment "C0%" is almost all at 100% that means that all cores are loaded down and at that time hitting high multipliers across all cores is hard. You can use a combination of multipliers like 28 28 27 27 or any combination which is stable and in my case the 4th core is the weakest for me.

http://forum.notebookreview.com/att...lier-manipulation-xm-processors-27-stable.jpg

http://forum.notebookreview.com/alienware-m15x/520311-multiplier-manipulation-xm-processors.html

 

Alright, here are the results. So, this processor can't run all cores @3.33Ghz out of the box, or am I seeing this wrong? I mean, they advertise it for 3.33Ghz, but only that at 50% load? They may aswell advertise it to do 3.8Ghz then...

I'm confused. I really don't get how this works >_<. How do I improve from here?

 

It will run at 3.33Ghz (25x) in stock configuration when using a single core, but that is reduced to 2.40 (18x) when running 4 cores/8 threads. That is what you are seeing on the ThrottleStop screenshot and is perfectly normal. To overclock the 940, right click on the main screen, which will launch a popup menu. Click on "Turbo Ratio Limits." These are the stock chip multipliers and should be 25-24-18-18. To begin, set those to 24-24-24-24 and click OK or Save and return to the main screen. Rerun wPrime. This time the FID (multipliers) will be better, but not much -- maybe 19+/-, even though they're set to 24x. The problem is the chip is not getting enough power to operate at the desired level. Right click on the TS main screen again, but this time select "Turbo Power Limits." Set these to 83W and 73A and save. Now rerun wPrime. The FID should jump to 24, and the time should drop significantly (7.9-8.0 sec). Adjust multipliers and TDP/TDC to taste, but slowly, carefully and in small increments. Watch temps. Too much power can break things.

 

First off; thanks so far you guys! I'm eager to learn and really appriciate your patience with a scrub like me. Unfortunatly, I don't seem to be done yet .

I've done as you suggested, the results were indeed as descibed, 24x across the board, but only for a brief moment, as then Chip% and C0% started to drop. Does that mean it's throttling? I turned ThrottleStop on halfway during a wPrime stability test (1024mb) and they went back to 100%, but the mutiplyer started slowly dropping from ~22.5 to ~21.0.

Also, when I ran the test again, with Tstop enabled like the previous run, Chip% & C0% dropped again. When I checked Chip Cmod 100% and turned Tstop off it would return to 100%.

I can't seem to get a grip on this, I don't understand what happens.

 

what is your tdp/tdc set at???

 

85W 73A

The following errors occurred when this message was submitted:
The message you have entered is too short. Please lengthen your message to at least 10 characters.

^ Ignore that bit.

 

so you have everything ticked:
clock mod
chipset clock mod
set multi????

then try rising your tdp to 95/75

 

Done.

Stats:
Clock Mod@100% ON
Chip Clock Mod@100% ON
Set Multiplier@16 ON
95W / 75A
Tstop Monitoring Only

Running: 1024mb stability test

Results:
FID all@24
Chip% starting at 100%, after a few seconds it drops to 50%, then increases in steps of 12.5% back to 100% in about 10 seconds, stays there for 1 second and drops back to 50% - repeatedly.

 

^^^^^ Make sure they are all checked and make sure throttlestop is on. Then boost up the power since the core is not able to keep the multipliers high and stable for long so more power and current will keep the multipliers high and stable. Use a combination of settings to find the minimum to make it stick. 90/75...95/70...85/75...95/75. you can go 97/85 but that is high and you should not have to use that unless you are going like 26x or 27x multipliers.

In this post i was running 93/75 at 28 28 27 27 and my multiplier overall was at 26.9 and holding stable. So find the lowest amount of power you need to make those stick since any more will just lead to increase heat and thermal throttling

EDIT: make sure throttle stop is ON and not on MONITORING

 

you have to turn tstop on for it to work correctly.

 

:tongue: :tongue:

 

hahaha you beat me this time, i'm a little slow on my game today, hahah

 

hahaha man just playing around either way the OP should have his XM chips rocking once he gets TS enabled....i need to get back to packing lolz and you can take over...thnx

 

*facepalms* I thought I read somewhere that it was either ticking the 100% boxes OR turning Tstop on...I suck so hard at this, it's emberassing .

I can't seem to raise the multipliers any higher than 24, they will drop in a slow but steady pase, regardless of my TDP settings. I did however just has a crash though, the system instantly shut down as if someone pulled the plug. I guess I'll stick with these settings for now:
95W/75A, 26-26-26-26

That gave me the fastest score thus far, 7.644s.

Does it really matter what the Turbo Ratio Limits are on? Even if I put them on 28, the multiplier won't go above 25. the highest peak I saw was 24.5, and that was in the 7.644s run.

 

Congrats you got your cherry popped on the first CPU related BSOD...get use to it lolz

Here is a shot of wprime hitting 6.9 but i had the multiplier cranked up and i think tdp might have been something like 97/85 or something like that. in my case it is usually the 4th core that can not hold its weight. I can take core 1 to 28 or 29 and core 2 at 27 or 28 and core 3 at 26-28 and core 4 is usually 26 and 27 if i am lucky or BSOD.

leave the 4th core at 26x max and play with the first three and the tdp/tdc to try to drop your scores. In reality you will not be running 27x or 28x daily since it can have instabilities and i usually run 25x or 26x and have no issues and bump up when i am ready for a reboot.

http://forum.notebookreview.com/att...icial-m17x-benchmark-thread-part-3-wprime.jpg


EDIT: Also in real world some apps are optimized for single or dual core so if you run something like 27 or 28x on the first 2 cores and 26x on the last 2 cores you will have a high clock speed so most apps will take advantage of that. You will have a hard time making a app hit 100% utilization for all cores and at that time 24x is enough to get the job done.

 

Your ''Set Multiplier'' is set to 16, where as if I do that, it will limit to 16. I take it that is because you have a 920xm?

 

when using set multi on the 920xm, the 16 is telling the cpu to use the max multi whenever possible, its do not mean its using 16x at a multi.

 

Sounds like heat to me. He shouldn't even need TS enabled to handle 24x smoothly. Try the 32M test, but download HWiNFO32 to track both temps and power usage by the CPU.

 

Well, I can fiddle around as much as I want with my TDP and multiplier settings, but they just won't go above that ~25.5. Also, when I turned everything off, it would give exactly the same results as with TS on: 7.5s (zomg new personal record?).

On a side note; I tried a run with my battery taken out to be 100% sure it's on A/C, and nothing changed. During the process I guess I squeezed something as a fan started rattling. Luckely though because of this forum I already knew how to reseat it and I solved the minor inconvenience. You guys at NBR are heroes!

 

next time make a log file, that way we can better understand what is going on.

it could be what the rev. said, thermal throttling.

 

This is from a 1024mb run, interrupted at 50%, with TS on monitor, and all 3 boxes unchecked. 90/75 | 29-28-28-26

Code:

  Date     Time    Multi   C0%   Ckmod  Chipm  Temp
10/22/10 21:54:01  11.22    3.9  100.0  100.0   53
10/22/10 21:55:07   9.69    3.8  100.0  100.0   48
10/22/10 21:55:08  11.94    4.2  100.0  100.0   48
10/22/10 21:55:11  24.41   19.8  100.0  100.0   68
10/22/10 21:55:14  25.02   99.9  100.0  100.0   72
10/22/10 21:55:17  24.89   99.8  100.0  100.0   74
10/22/10 21:55:20  24.76   99.9  100.0  100.0   76
10/22/10 21:55:23  24.66   99.8  100.0  100.0   77
10/22/10 21:55:26  24.60   99.8  100.0  100.0   78
10/22/10 21:55:28  24.53   99.8  100.0  100.0   79
10/22/10 21:55:31  24.45   99.8  100.0  100.0   81
10/22/10 21:55:34  24.38   99.8  100.0  100.0   82
10/22/10 21:55:37  24.33   99.8  100.0  100.0   83
10/22/10 21:55:40  24.28   99.8  100.0  100.0   84
10/22/10 21:55:43  24.23   99.8  100.0  100.0   85
10/22/10 21:55:46  24.17   99.8  100.0  100.0   84
10/22/10 21:55:49  24.11   99.8  100.0   50.0   86
10/22/10 21:55:52  24.99   69.1  100.0   50.0   78
10/22/10 21:55:55  26.00   51.8  100.0   50.0   78
10/22/10 21:55:58  26.00   51.8  100.0   50.0   77
10/22/10 21:56:01  26.00   51.8  100.0   50.0   77
10/22/10 21:56:04  26.00   51.8  100.0   50.0   77
10/22/10 21:56:08  26.00   51.8  100.0   50.0   77
10/22/10 21:56:11  26.00   51.8  100.0   50.0   77
10/22/10 21:56:15  26.00   51.8  100.0   50.0   77
10/22/10 21:56:18  26.00   51.8  100.0   50.0   77
10/22/10 21:56:21  26.00   51.8  100.0   50.0   76
10/22/10 21:56:24  26.00   51.8  100.0   50.0   77
10/22/10 21:56:28  26.00   51.8  100.0   50.0   77
10/22/10 21:56:31  26.00   51.8  100.0   50.0   77
10/22/10 21:56:34  26.00   51.8  100.0   50.0   77
10/22/10 21:56:38  26.00   51.7  100.0   50.0   77
10/22/10 21:56:42  26.00   51.8  100.0   50.0   77
10/22/10 21:56:45  26.00   51.8  100.0   50.0   77
10/22/10 21:56:48  26.00   51.8  100.0   50.0   77
10/22/10 21:56:51  26.00   51.8  100.0   50.0   77
10/22/10 21:56:54  26.00   51.8  100.0   50.0   77
10/22/10 21:56:57  26.00   51.8  100.0   50.0   77
10/22/10 21:57:01  26.00   51.8  100.0   50.0   77
10/22/10 21:57:04  26.00   51.8  100.0   50.0   77
10/22/10 21:57:07  26.00   51.8  100.0   50.0   77
10/22/10 21:57:11  26.00   51.8  100.0   50.0   77
10/22/10 21:57:14  26.00   51.8  100.0   50.0   77
10/22/10 21:57:17  26.00   51.8  100.0   50.0   77
10/22/10 21:57:20  26.00   51.8  100.0   50.0   77
10/22/10 21:57:23  26.00   51.8  100.0   50.0   77
10/22/10 21:57:26  26.00   51.7  100.0   50.0   78
10/22/10 21:57:30  26.00   51.8  100.0   50.0   77
10/22/10 21:57:33  26.00   51.8  100.0   50.0   77
10/22/10 21:57:37  26.00   51.7  100.0   50.0   77
10/22/10 21:57:40  26.00   51.8  100.0   50.0   77
10/22/10 21:57:43  26.00   51.7  100.0   50.0   77
10/22/10 21:57:46  26.00   51.8  100.0   50.0   77
10/22/10 21:57:49  26.00   51.8  100.0   50.0   77
10/22/10 21:57:52  26.00   51.8  100.0   50.0   78
10/22/10 21:57:55  26.00   51.8  100.0   50.0   77
10/22/10 21:57:59  26.00   51.8  100.0   50.0   77
10/22/10 21:58:02  26.00   51.8  100.0   50.0   78
10/22/10 21:58:05  26.00   51.8  100.0   50.0   78
10/22/10 21:58:08  26.00   51.8  100.0   50.0   78
10/22/10 21:58:12  26.00   51.8  100.0   50.0   78
10/22/10 21:58:15  26.00   51.8  100.0   50.0   78
10/22/10 21:58:18  26.00   51.8  100.0   50.0   78
10/22/10 21:58:22  26.00   51.8  100.0   50.0   78
10/22/10 21:58:23  26.00   51.8  100.0   50.0   78
10/22/10 21:59:19   9.88    3.1  100.0  100.0   56
10/22/10 21:59:20  10.15    3.6  100.0  100.0   56

This is from a 1024mb run, interrupted at 50%, with everything enabled, 90/75 | 29-28-28-26

Code:

  DATE     TIME    MULTI   C0%   CKMOD  CHIPM  TEMP

10/22/10 22:12:23  11.42    4.1  100.0  100.0   52
10/22/10 22:12:24  10.34    4.2  100.0  100.0   53
10/22/10 22:12:25   9.92    3.2  100.0  100.0   53
10/22/10 22:12:26  10.30    3.6  100.0  100.0   53
10/22/10 22:12:27  10.00    3.7  100.0  100.0   53
10/22/10 22:12:28  11.52    3.8  100.0  100.0   52
10/22/10 22:12:32  18.14    6.8  100.0  100.0   69
10/22/10 22:12:36  23.95   98.8  100.0  100.0   74
10/22/10 22:12:39  23.75   99.8  100.0  100.0   77
10/22/10 22:12:43  23.67   99.8  100.0  100.0   78
10/22/10 22:12:47  23.58   99.8  100.0  100.0   79
10/22/10 22:12:51  23.41   99.8  100.0  100.0   81
10/22/10 22:12:54  23.37   99.8  100.0  100.0   82
10/22/10 22:12:58  23.28   99.8  100.0  100.0   82
10/22/10 22:13:02  23.21   99.8  100.0  100.0   83
10/22/10 22:13:06  23.12   99.8  100.0  100.0   83
10/22/10 22:13:09  23.12   99.8  100.0  100.0   85
10/22/10 22:13:13  23.12   99.8  100.0  100.0   85
10/22/10 22:13:17  23.12   99.8  100.0  100.0   86
10/22/10 22:13:21  23.10   98.7  100.0  100.0   86
10/22/10 22:13:25  23.06   95.4  100.0  100.0   86
10/22/10 22:13:28  23.02   93.9  100.0  100.0   86
10/22/10 22:13:32  22.93   99.8  100.0  100.0   87
10/22/10 22:13:36  22.92   99.8  100.0  100.0   87
10/22/10 22:13:40  22.81   99.8  100.0  100.0   88
10/22/10 22:13:43  22.73   99.7  100.0  100.0   88
10/22/10 22:13:47  22.67   99.8  100.0  100.0   88
10/22/10 22:13:51  22.68   99.7  100.0  100.0   88
10/22/10 22:13:55  22.63   99.7  100.0  100.0   89
10/22/10 22:13:58  22.50   99.8  100.0  100.0   89
10/22/10 22:14:02  22.47   99.8  100.0  100.0   89
10/22/10 22:14:06  22.45   99.8  100.0  100.0   89
10/22/10 22:14:11  22.44   99.7  100.0  100.0   89
10/22/10 22:14:15  22.45   99.8  100.0  100.0   90
10/22/10 22:14:19  22.45   99.7  100.0  100.0   89
10/22/10 22:14:23  22.44   99.8  100.0  100.0   90
10/22/10 22:14:27  22.45   99.8  100.0  100.0   90
10/22/10 22:14:30  22.44   99.8  100.0  100.0   90
10/22/10 22:14:34  22.44   99.8  100.0  100.0   89
10/22/10 22:14:38  22.44   99.7  100.0  100.0   91
10/22/10 22:14:41  22.45   99.8  100.0  100.0   91
10/22/10 22:14:43  22.63   96.7  100.0  100.0   91
10/22/10 22:14:44  23.06    8.7  100.0  100.0   74
10/22/10 22:14:45  10.11    4.3  100.0  100.0   71
10/22/10 22:14:46   9.55    2.9  100.0  100.0   71
10/22/10 22:14:47   9.81    3.1  100.0  100.0   70
10/22/10 22:14:48   9.79    3.6  100.0  100.0   68
10/22/10 22:14:49   9.50    3.3  100.0  100.0   68
10/22/10 22:14:50   9.68    3.7  100.0  100.0   68
10/22/10 22:14:51   9.88    4.4  100.0  100.0   67
10/22/10 22:14:52   9.63    3.7  100.0  100.0   67
10/22/10 22:14:53  15.76    6.4  100.0  100.0   67
10/22/10 22:14:54  17.84    8.1  100.0  100.0   72
10/22/10 22:14:55  14.57    7.0  100.0  100.0   66
10/22/10 22:14:56  16.71    7.1  100.0  100.0   66
10/22/10 22:14:57  18.24    6.2  100.0  100.0   66
10/22/10 22:14:58  17.65    6.7  100.0  100.0   65
10/22/10 22:14:59  16.38    5.9  100.0  100.0   65
10/22/10 22:15:00  14.27    5.3  100.0  100.0   64

And two runs (I thought it didn't log first, but it did, hence the two runs) at 95/80 (which was slower than the previous run, according to wPrime)

Code:

  DATE     TIME    MULTI   C0%   CKMOD  CHIPM  TEMP
10/22/10 22:15:01  10.50    4.3  100.0  100.0   64
10/22/10 22:15:02  11.56    4.7  100.0  100.0   63
10/22/10 22:15:03   9.58    3.4  100.0  100.0   63
10/22/10 22:17:13  10.20    4.9  100.0  100.0   53
10/22/10 22:17:14  10.61    5.5  100.0  100.0   54
10/22/10 22:17:15   9.97    4.1  100.0  100.0   54
10/22/10 22:17:17  11.96    4.6  100.0  100.0   53
10/22/10 22:17:20  21.79    9.2  100.0  100.0   69
10/22/10 22:17:24  23.82   99.4  100.0  100.0   76
10/22/10 22:17:28  23.66   99.8  100.0  100.0   78
10/22/10 22:17:31  23.57   99.8  100.0  100.0   79
10/22/10 22:17:35  23.43   99.8  100.0  100.0   81
10/22/10 22:17:38  23.36   99.8  100.0  100.0   80
10/22/10 22:17:42  23.28   99.8  100.0  100.0   82
10/22/10 22:17:46  23.19   99.8  100.0  100.0   82
10/22/10 22:17:50  23.12   99.8  100.0  100.0   84
10/22/10 22:17:54  23.11   99.8  100.0  100.0   85
10/22/10 22:17:58  23.11   99.8  100.0  100.0   85
10/22/10 22:18:02  23.09   99.8  100.0  100.0   81
10/22/10 22:18:06  23.31   90.4  100.0  100.0   86
10/22/10 22:18:11  23.03   93.2  100.0  100.0   86
10/22/10 22:18:15  22.93   99.8  100.0  100.0   87
10/22/10 22:18:18  22.90   99.8  100.0  100.0   87
10/22/10 22:18:22  22.80   99.8  100.0  100.0   87
10/22/10 22:18:26  22.72   99.8  100.0  100.0   88
10/22/10 22:18:30  22.68   99.8  100.0  100.0   88
10/22/10 22:18:34  22.67   99.8  100.0  100.0   88
10/22/10 22:18:38  22.52   99.8  100.0  100.0   89
10/22/10 22:18:42  22.49   99.8  100.0  100.0   89
10/22/10 22:18:46  22.44   99.8  100.0  100.0   88
10/22/10 22:18:50  22.44   99.8  100.0  100.0   88
10/22/10 22:18:53  22.44   99.8  100.0  100.0   89
10/22/10 22:18:57  22.44   99.8  100.0  100.0   90
10/22/10 22:19:01  22.44   99.8  100.0  100.0   89
10/22/10 22:19:05  22.44   99.8  100.0  100.0   90
10/22/10 22:19:09  22.44   99.8  100.0  100.0   90
10/22/10 22:19:14  22.44   99.7  100.0  100.0   90
10/22/10 22:19:18  22.44   99.8  100.0  100.0   90
10/22/10 22:19:21  22.44   99.8  100.0  100.0   91
10/22/10 22:19:25  22.45   99.8  100.0  100.0   89
10/22/10 22:19:27  22.44   99.8  100.0  100.0   90
10/22/10 22:19:28  22.60   85.9  100.0   37.5   75
10/22/10 22:19:29   9.60    3.7  100.0  100.0   73
10/22/10 22:19:30   9.60    4.0  100.0  100.0   71
10/22/10 22:19:31   9.72    4.3  100.0   50.0   71
10/22/10 22:19:32  12.92    6.0  100.0  100.0   70
10/22/10 22:19:33   9.77    3.6  100.0  100.0   68
10/22/10 22:19:34   9.80    3.0  100.0  100.0   68
10/22/10 22:19:35   9.60    3.0  100.0  100.0   68
10/22/10 22:19:36   9.72    3.4  100.0  100.0   67
10/22/10 22:19:37  10.27    4.4  100.0  100.0   68
10/22/10 22:19:38   9.70    3.4  100.0  100.0   66
10/22/10 22:19:39  10.65    3.8  100.0  100.0   66
10/22/10 22:19:40  10.25    3.9  100.0  100.0   66
10/22/10 22:19:41  10.11    3.4  100.0  100.0   66
10/22/10 22:19:42  10.57    3.3  100.0  100.0   65
10/22/10 22:19:43   9.63    3.3  100.0  100.0   65
10/22/10 22:19:44  12.49    3.8  100.0  100.0   67
10/22/10 22:19:45   9.67    3.2  100.0  100.0   64
10/22/10 22:19:46   9.61    3.2  100.0  100.0   64
10/22/10 22:19:47   9.71    3.1  100.0  100.0   63
10/22/10 22:19:48   9.61    3.2  100.0  100.0   63
10/22/10 22:19:49   9.66    2.9  100.0  100.0   63
10/22/10 22:19:50   9.52    2.9  100.0  100.0   62
10/22/10 22:19:51   9.92    4.4  100.0  100.0   63
10/22/10 22:19:52   9.82    3.7  100.0  100.0   62
10/22/10 22:19:53  10.85    4.6  100.0  100.0   62
10/22/10 22:19:54  13.78    5.5  100.0  100.0   62
10/22/10 22:19:55  11.75    6.9  100.0  100.0   62
10/22/10 22:21:26   9.81    4.4  100.0  100.0   56
10/22/10 22:21:27  10.94    4.6  100.0  100.0   56
10/22/10 22:21:28   9.97    4.4  100.0  100.0   56
10/22/10 22:21:29  11.61    6.9  100.0  100.0   56
10/22/10 22:21:30  12.15    5.6  100.0  100.0   55
10/22/10 22:21:31  12.50    5.2  100.0  100.0   56
10/22/10 22:21:32  11.32    5.8  100.0  100.0   55
10/22/10 22:21:33  10.08    4.5  100.0  100.0   55
10/22/10 22:21:34  16.73    6.2  100.0  100.0   55
10/22/10 22:21:35  10.92    4.6  100.0  100.0   56
10/22/10 22:21:36   9.75    4.9  100.0  100.0   55
10/22/10 22:21:38  17.92    7.6  100.0  100.0   57
10/22/10 22:21:39  20.14    5.7  100.0  100.0   56
10/22/10 22:21:40  10.32    4.5  100.0  100.0   57
10/22/10 22:21:41  10.71    4.5  100.0  100.0   55
10/22/10 22:21:42   9.81    4.0  100.0  100.0   55
10/22/10 22:21:43   9.81    3.8  100.0  100.0   55
10/22/10 22:21:44   9.77    4.0  100.0  100.0   55
10/22/10 22:21:45   9.69    3.1  100.0  100.0   55
10/22/10 22:21:46   9.30    2.4  100.0  100.0   55
10/22/10 22:21:47   9.62    2.9  100.0  100.0   54
10/22/10 22:21:49   9.49    2.8  100.0  100.0   55
10/22/10 22:21:52  23.79   78.5  100.0  100.0   75
10/22/10 22:21:57  23.69   99.8  100.0  100.0   78
10/22/10 22:22:01  23.57   99.8  100.0  100.0   79
10/22/10 22:22:05  23.42   99.8  100.0  100.0   81
10/22/10 22:22:08  23.33   99.8  100.0  100.0   82
10/22/10 22:22:12  23.25   99.8  100.0  100.0   83
10/22/10 22:22:16  23.14   99.7  100.0  100.0   82
10/22/10 22:22:20  23.11   99.8  100.0  100.0   84
10/22/10 22:22:24  23.12   99.8  100.0  100.0   85
10/22/10 22:22:28  23.17   97.8  100.0  100.0   80
10/22/10 22:22:32  23.22   94.7  100.0  100.0   86
10/22/10 22:22:36  23.06   93.9  100.0  100.0   86
10/22/10 22:22:40  22.94   99.8  100.0  100.0   87
10/22/10 22:22:45  22.93   99.8  100.0  100.0   87
10/22/10 22:22:49  22.84   99.8  100.0  100.0   87
10/22/10 22:22:53  22.73   99.8  100.0  100.0   88
10/22/10 22:22:57  22.68   99.8  100.0  100.0   88
10/22/10 22:23:01  22.68   99.8  100.0  100.0   88
10/22/10 22:23:05  22.57   99.8  100.0  100.0   87
10/22/10 22:23:09  22.46   99.8  100.0  100.0   88
10/22/10 22:23:13  22.46   99.8  100.0  100.0   89
10/22/10 22:23:17  22.44   99.8  100.0  100.0   89
10/22/10 22:23:21  22.45   99.8  100.0  100.0   90
10/22/10 22:23:25  22.44   99.7  100.0  100.0   90
10/22/10 22:23:28  22.44   99.7  100.0  100.0   90
10/22/10 22:23:32  22.44   99.8  100.0  100.0   89
10/22/10 22:23:36  22.44   99.8  100.0  100.0   90
10/22/10 22:23:41  22.44   99.8  100.0  100.0   89
10/22/10 22:23:44  22.45   99.8  100.0  100.0   90
10/22/10 22:23:48  22.44   99.7  100.0  100.0   89
10/22/10 22:23:52  22.45   99.8  100.0  100.0   90
10/22/10 22:23:56  22.44   99.7  100.0  100.0   91
10/22/10 22:23:58  22.45   99.7  100.0  100.0   91
10/22/10 22:23:59  22.66   83.1  100.0  100.0   76
10/22/10 22:24:00   9.51    2.7  100.0  100.0   72

 

I don't know, guys. That's strange.

 

that is wierd!!! wprime should of made you maxxed everything. send this to uncle webb and see what he says about it.

 

Are you sure you have wPrime running 8 threads?

 

The M15x has a major problem with chipset clock modulation as soon as you start increasing the turbo multipliers. There's a reason why Dell restored the equal turbo multipliers across the board with the latest M17x bios but decided not to do the same for the M15x. There's a problem here that they don't want to talk about. It's possible that the bios is limiting the M15x to less power consumption than what the M17x is allowed to draw so the M15x uses chipset clock modulation to slow the CPU down internally and reduce power consumption when you start trying to push it too hard.

When you are experiencing both chipset clock modulation throttling and turbo throttling, it would be a good idea to take a few steps back. You don't have to get your new laptop fully overclocked day 1.

The 29 multiplier is very aggressive to be starting with. Why not start testing with the 24 multiplier across the board for 1, 2, 3 or 4 cores active and then slowly work your way up so you can learn about the throttling issues as you go along.

You might want to consider buying a Kill-a-Watt meter or similar so you can keep a close eye on power consumption while overclocking and so you can determine if it is power consumption that is the trigger for the start of chipset clock modulation.

ThrottleStop can help combat this when you set it to 100.0% and put a check mark in that box but it's not a cure for this problem. More like a band aid. My plan is to significantly improve how ThrottleStop battles against this type of throttling in the M15x and I should have some new code ready for testing in the near future. A chunk of code in ThrottleStop needs to be rewritten so it can try to battle much more aggressively to help out the M15x and its troubles when users are overclocking it.

With chipset clock modulation checked, try running wPrime and see if you can maintain the 24.00 multiplier across all 8 threads while it is running. Keep increasing TDP/TDC as you are benching and see if the average multiplier goes up to 24 or if it flat lines before that. With the core temperatures you're already hitting, you might be limited to a maximum multiplier of only 24 or 25 when fully loaded with wPrime. If 24 is OK, then go for 25. Check the core temperature during a longer 1024M run to make sure it is not getting too high. Heat tends to limit the M15x sooner than an M17x at a similar speed and can also lead to turbo throttling.

Trying to use high multipliers is pointless if all it is doing is triggering chipset clock modulation sooner. You have to avoid this type of throttling since it instantly kills performance, especially when gaming. The C0% should be very close to 100% when fully loaded. When that starts to drop while running 8 threads of wPrime, that's an instant sign of internal CPU throttling. There's no need to check the regular Clock Modulation option because the M15x does not use this throttling method. The Set Multiplier box should be set to 16 for a Core i7-920XM and to 17 for the 940XM.

I'm almost ready to start improving ThrottleStop to help with the M15x so a tester with some serious chipset clock modulation issues is just what I'm looking for. I'll be around this thread so keep testing. Can you post a log file of a 1024M run with the More Data option selected? You can upload it to www.mediafire.com

 

Yes, 100% sure. Otherwise the runs would take aaaages.


I've added two logs, one doing 25% of wPrime's 1024MB test at 80W70A 24-24-24-24. The other is where I started off the same, and bumped up the W to reach 24x across the board. I've made notes in the log.

(Tell me if the link is not working correctly, btw)

Free File Hosting Made Simple - MediaFire

Edit: added a third run, see notes in file for more information.

 

Hopefully this isn't too much of a thread jack, but I've been following this because I'm trying to overclock my 920xm, but I can't seem to get wPrime 1.55 to run correctly. Everytime I run the stability or speed test, it stops the test after a few seconds and the last line says "Error occured: Automation error%1 is not a valid Win32 application. FYI, I'm opening the program with "run as administrator" selected. I also have gone in advanced settings and entered 8 threads. Any suggestions?

 

Soloist, where did your 940XM come from? Assuming it's an ES, do you know what the Model No. is (Q4AP, etc)?

 

My 940XM came with my laptop. I simply configured one with a 940XM from the Dutch Dell website.

 

Then I would call Dell. There are few things in this world more reliable than a genuine Intel microprocessor, but your 940XM is not upholding the tradition. It's possible that it's not the 940, but a defective motherboard or component preventing supply of the power required or otherwise limiting processor performance, but it sure sounds like a hardware problem of some variety.

It should not require close to 98W to run a 940 at 3.20 Ghz (24x). Over and over, we've seen 24x even with 82-83W actual (and TDP as low as 80W) on both 920's and 940's. Some 940's seem to require about 2W more at a given performance level, but nothing dramatic.

 

Awww maaaan. I waited for ages on it . Ah well, atleast I know now that there's more to get out of this system.

Can anyone comfirm that it's a peice of faulty hardware causing this, and not something like the A08 bios? No offense of course to you Revelator, but I am somewhat hessitant to go call Dell with only one person ttelling so .

 

i would agree for some reason it thought you were using a ES chips and i have noticed some ES chips need more juice but a stock chip needs less power. I would wait for inap to come in here but it seems like the chip is not performing as it should. What i am more worried about is convincing dell of the issue you have and have them replace the chip or mobo. They will claim overclocking is not covered or guaranteed. You paid goood $$$ for a product and my ES chip is able to hold its weight compared to a OEM 940xm. Not bragging or anything but for the $$$ i would expect it to perform out of the box or maybe just a tiny little bit of power. If you are within 21day make a list of all issues and demand a replacement

 

No offense taken. Sorry for your problems, and I hope very much that I turn out to be wrong.

 

Anyone with a 940XM that could provide me with a wPrime 1024 run time with their processor on stock settings? Just the time it took will do, thanks.

If my processor underperforms significantly under someone elses 940xm where both are on stock settings then it should cover warrenty.

 

intel stock ???? or 25x across???//

this is intel stock 25-24-18-18

hmmm just tried this at 25x across, but my multi isn't kicking up to 25. so i think i have the same problem.

 

What are your TDC set at? My result on 25-24-18-18 with 63W60A was 10,4

 

that run was 85/67

wow had to take my tdp to 100/67
for it to run on 25x

 

Inap, try 25x at 90/80.

 

nope 90/80 didn't gave me 25x

but 100/67 gave me 25x, but the strange thing is i get 8.021 on both runs.

 

Think Dell has slipped o/c saltpetre into the stew? Good news (sorta) for Soloist if this is widespread, but bad form by Dell.

Tested on the Sager -- 25x@90/80, finished in 7.61 seconds, running at 25x flat and using 87.32W (per HW32). Same as always.

 

I got a 7.6 with 95/67, 4x25 and it would not reach above 24.5 multi.

Inap, does yours multiplier also slowly drop? Run a 1024 and tell me how high it starts and ends

Edit: NOT*

 

Yeah, but you have a 920xm, maybe Intel did something majorly different for their 940's?

Edit to avoid making a load of short sentence posts:
I find it wierd how increasing my amps (TDC A) does not do anything?