M6800 Owners' Thread

I am sorry to ask but which sensor is the pch temp in HWinfo? That could be the culprit like you say. If I remember it right, last time I disassembled the unit, pch was passively cooled by the chasis via thermal pad. Maybe if used a better pad of high conductivity the issue may be avoided.
Regarding the 120w of the 980m, I don't think it's hard capped at 100w like Quadro variant. For the Quadro, I tried fiddling around with that cap and put it to 70w 90e 80w 120w etc to see if the cap can be adjusted at all. But no matter the value it just won't and stays at 100w. Confirmed it using HWinfo /GPU z in load.
So the 980m can be pushed to a greater potential than this Quadro M5kM. I was able to use M5kM in a certain way that it will boost all the way till 1200mhz if the TDP allows it because thermals are very good. It usually stays around that mark in most apps and games and drops to 1100ish under stressed scenarios. Temps <80c.
I would like to dig into the m6700(might sell m6800) and pop in a 980m if I can get and mod it to boost till 1300 and if lucky with getting Samsung chips might overclock mem to 3k+. My card could do Max 2801(Hynix) and anything beyond that will make the card unrecognisable in device mgr. Is there anything to regret by downgrading to m6700? I have a HP 8770w DC with 3920xm and probably will be better if the 3920xm be in m6700 as I might get the opportunity to OC the cpu too?

 

Going down a CPU generation means that you lose a few capabilities and also get a slightly worse iGPU. I am a bit bummed, for example, that VMware's upcoming version of Workstation that works with Hyper-V activated requires a 4th-gen CPU for that feature; Ivy Bridge doesn't make the cut. Also, Ivy Bridge Intel GPU drivers were never upgraded to WDDM 2.0 so some things like mirroring the internal screen and HDMI screen (powered by different GPUs) is not possible in Windows 10. Some of that doesn't matter if you run with Optimus disabled. CPU raw performance will be similar and you can drop in a Maxwell GPU just like with the M6800. The system layout makes more sense in the M6700 IMO (larger fan is for the CPU, not the GPU; GPU card is not covering up the PCH; PCH is actually on the right side of the board and covered by the CPU heatsink).

 

In my opinion the M6700 is better than the M6800, you can replace the lcd by anything you want (even 4k), it doesn't matter of the motherboard and that's a big deal for me, as far as cooling I think the M6700 have a better gpu cooling than the M6800 but it also have a worst cpu cooling than the M6800 (but it can still keep up with an 3920XM at 4.2GHz - 60W below 85°c with liquid metal).
It's also cheaper to have a M6700, cpu is less expensive, overall laptop is less expensive, and as for GPU upgrade compatibility, both are at the same level

 

Just looked it up yesterday and I could swear that one of the Ambient temps in EC part of HWInfo was PCH back when I first installed 980M last year...

Sent from my ANE-LX1 using Tapatalk

 

I have the 3920xm in 8770w elitebook so if I buy the m6700, how do I OC it? Via xtu? Or do you use something else?
Could you please tell me if the 4.2ghz OC can be baked in at system startup so I don't have to do it again on each boot?
Thank you for your insight on cooling. I was thinking m6700 will be better in cpu cooling as it has the bigger heatsink with bigger fan and copper travel is less and wider heat pipes on the cpu opposed to the m6800.
Thank you for all the good information.

Hmm... I'll check it out. Thanks for pointing it out.

Thank you very much for sharing the information. I guess I'll just sell this off. Or buy another m6800 and try pch temp on that. I'll try to hack in a small metal piece and use the metal chassis as a passive heatsink to reduce throttling by pch.

 

oc is possible with nvram tuning, which is working boot after boot until you clear cmos, I need to finish the tutorial I started writing

 

Thank you for your efforts and contribution. Looking forward to your guide/writeup. I guess I will buy the m6700 instead of m6800 then I guess so I could use the 3920xm from my 8770w and use an old i7 3630mq that I have lying around in 8770w. 8770w has poor GPU cooling so putting in a GTX 980m will thermal throttle a lot; on full fan speed, not much air pressure is felt near the GPU vent.

 

You can overclock of +400MHz on 37x0QM and 38x0QM CPU, and "infinite" (usually 4.2~4.3GHz all core) on 3920XM

 

I tried via xtu on a previous m6700 that I owned with a 3840qm and the package TDP uplift works. 3920xm in m6700 is what I'm excited about. I'm on the hunt now for an m6700.

 

Does anyone used Dell M6800 Red with Touchscreen ? My friend has a deal Dell M6800 Red Touchscreen and want to sale. Please tell me Dell M6800 Touchscreen has any problem ???