Just repasted with LM... 6820HK still throttling?

Just re pasted with Coductonaut. OC'd to 4.2GHZ with a undervolt. OCCT triggers throttling within 45sec.
All the temps look legit, the LM is doing work. Why is the 6820HK throttling down to 3ghz? Is this normal? Even if I have the fans blasting in performance mode.

Also while I was playing GOW4 for 30 minutes, HW Monitor indicated temps spiked to 94C? I will test it out further tomorrow. This is wierd because PRIME95 or OCCT couldn't recreate a spike. Before LM they would!

 

i'm not an OC god but.... undervolt WITH an OC?
isn't this starving the cpu a little?

also that spike to 94 is troubling, if i had to guess i'd say the paste job isn't quite right or the mounting pressure is off

 

TDP throttling? Maybe it is not being fed enough power by the brick or your undervolt is too aggressive.

 

important thing to add, when you repaste (especially with LM) you want to run at stock multipliers and voltage to test stability and get some basl8ne temps first, THEN you can OC and UV test as you like.

reset the clocks and voltage then run OCCT again, this should give you a better indicator where the problem might be.

 

The idea of undervolting is really just to find the correct voltage the CPU needs to run. That's all it is.

You aren't running it with too little voltage, as it wouldn't function, that's called undervolting too far.

When you find the right offset undervolt at stock CPU settings, that's what the voltage should have been set at in the BIOS. The difference is actually an overvolt set in the BIOS, causing unnecessary thermal output - it's running too hot because it's getting too much voltage.

As you OC, and you start going higher in frequency, your undervolt setting for stock speeds is going to be too much - you need to raise the voltage as you raise the clock speed.

There are some CPU's that will still run with a slight undervolt at 4.0ghz, again showing the BIOS default voltage is way too high.

When you go above 4.0ghz on all 4 cores you will likely start needing to add overvolt. My 5850HQ would still take a -10mV to -30mV from early to later settings at 4.0ghz OC.

On my 5950HQ I needed +100mV at 4.2ghz. Of course that shot the temperatures way up on sustained load, not only from high clock but from higher voltage, so it wasn't practical to run at that speed all the time, but for benchmarks it was fun.

In summary, undervolting and overvolting using offset voltage are the method to find the right voltage for the CPU's current settings, you aren't starving the CPU you are finding the correct voltage to run it at most efficiently.

 

thanks for the explanation but i already know what UVing is (i do it too), but the point is that he may need an over volt to stabilize the clocks, to know that however he needs to start from a fresh new baseline after the repaste, cuz the temperatures will surely have varied and so will have the oc potential. (i could be looking at it the wrong way though)

 

It's a matter of tuning based on the changing parameters, and if he was undervolting and running stable at OC settings for his CPU, and then re-pasted and lowered temps further...

He might be able to go further with the CPU OC, which might require reducing the undervolt until he hits that crossover point where overvolting from stock BIOS voltage might be needed.

The actual undervolt / overvolt within non-throttling ranges should be a stable value, even with drops in thermal load, but it does reset the tuning chart - it's worth starting the cycle from base settings again too, but not necessarily required.

 

i see i see, thanks for explaining more.

ima hijack the thread for moment and ask you specifically a quick question, is overclocking the 965m on the 17r3 doable?, if so, is it worth the risk and effort?

 

There are plenty of youtube videos on OC'ing the 965m on the AW 17r3, so I'd direct you there:
https://www.youtube.com/results?search_query=overclock+alienware+17r3+765m+

Alienware 17 R3 CPU+GPU+RAM Overclocking: A Performance Preview


From my experience, it's always worth getting to know your machine, and taking the time to tune it for best performance, lowest temps, without taking the risk of hardware hacking.

The 965m was a great little OC'er, lots of headroom, look for the best you can get with stock vbios / BIOS, and then look up custom vbios / BIOS if you want to get that deep into it.

The best way to spend time on your laptop though is doing the things you got it to do. If it was gaming, working, or other, do that and don't get unfocused by trying to get 10% better performance out of CPU / GPU.

 

already running at +135mhz, which is the max stock vbios and drivers would let me.
i got it mainly for study and gaming, that's why i want to OC the gpu a bit more but the guides around are a bit shoddy.
thanks for the link

 

+135 is already maximum core clock, have you OC'd the memory? That should boost your score too.

The boost from the CPU + GPU core + CPU vram should help together to make a nice OC

 

well i can go +300 and be stable. but i don't see any actual performance gain in games.

edit: lemme clarify, my cpu (6700HQ) is running stock clocks at -125mv on core and cache (saw 10~12c drop), my 965M is running +135mhz on core (max allowed by stock VBIOS and drivers), and i could run +300 on the VRam but there is not actual visual fidelity to gain from it so i'd rather keep it at stock.

 

There might be a setting before +300 where the VRAM speed increase helps a bit in some games. There is a point of OC with VRAM that creates less performance, right before it artifacts.

At 6700HQ might get better than -125mV, but that's a good undervolt too, every CPU has different characteristics for undervolting.

Looks good

 

i could go lower but i'm pretty happy with the temps, i've read people going -150mv but then it's wonky, so i chose stability.

which type of games we talking about here?, any particular ones?

note: i'm sorry for hijacking OP.

 

Well it throttles even at STOCK clocks. Jumps down to 2.7-2.9 after 1 minute. Even though HWmonitor isn't indicating spikes do I need to open her up and add more LM?

 

You forgot to raise the power limits most likely, this causes throttle even when temperatures are in check.

No, undervolt + OC is actually doable and stresses the components less (you are drawing less power through the system).

I'm pretty sure it's TDP throttling or it could be caused by an improper throttlestop/XTU setting.

You need to flash @Prema vbios to get the maximum OC from that 965M

No, as with any thermal paste, too much LM Is bad.

As I said above, you most likely have an improper throttlestop/XTU settings combined with stock Power limit throttling.

 

What are your OC settings @ Bios?

 

Forgot to post my solution. Had to increase the Turbo Boost Power max in Intel XTU. Now it sits solid at any overclock. I haven't tried 4.3Ghz yet.