Ethrem

You've got PM. I have been figuring that this chip just sucks compared to the 4910mq that everyone has and gave up on it.

I actually do think its normal unfortunately... Core won't do +50 on mine either. As soon as I make a bump to the core, when I open something 3D, the screen freezes. I probably could get faster overclock on the memory, I've just not been tweaking much with all the problems people have had with the drivers throttling. 450 is a decent boost and is stable so that's what I leave it at when OCing now.

Okay well then I guess I'm fine with it. Sucks that I've got a processor that can't hit the clocks of the last two generations and a video card that puts out more heat stock than the last generation did when overclocked heh. Although I'm one of the few that has 880Ms that are performing well at all right now so I'm not going to complain. Seems these have a lot of issues... I've seen dead cards, throttled cards, one guy had his go up in smoke... So I'll count my blessings. I did raise the power target in Precision X to 160% for a test and I went to 25797 NVIDIA GeForce GTX 880M video card benchmark result - Intel® Core i7-4940MX CPU @ 3.10GHz,Notebook P377SM-A

Lol, from his post saying this is what an 880M should be able to achieve I figured he had a reasonable overclock heh. Yeah the Clevo cooling isn't adequate enough to push the voltage and see what these can do. Plus I don't want to mess with anything with that looming nVidia super throttle issue when the driver crashes... Sent from my HTC One_M8 using Tapatalk

Well if it doesn't respond to core increases, I'm performing even worse because that is stock core (my cards won't overclock on stock volts at all) Memory could be an issue though. I'm running 32GB @ 1600, CAS 11. I bumped my memory clock on the 880s up to 450 for that test. It's what I actually usually run them at when I remember to set them. Sent from my HTC One_M8 using Tapatalk

Well I have a 330W adapter and my 4940MX is undervolted by 80mv so I would think I have enough power? Chip was clocked to 4GHz max (its the highest overclock I can get on all 4 cores because of the temps, it throttles) and was probably running 3.79 or 3.89. I wish I could measure power draw. I have a second power supply but don't have the adapter and was assured it's not needed. But it's still a lot less than what Mr. Fox said that an 880M SLI configuration should get, like 8k less graphic score than his marginally overclocked 780Ms Sent from my HTC One_M8 using Tapatalk

NOT impressed....

Unfortunately there is a bug with the 880M right now that causes a black screen when the benchmark is run so I have to wait for new drivers before I can run it. I can tell you though that I've never come close to your 780M benchmarks, even with the modded vbios and +450 on the memory.

Well the design of the card appears to be pushed to its limits though. Whatever they messed up on with these cards is crippling them big time. I'm starting to think they intentionally binned the 880m chips poorly so that they wouldn't hold a candle to Maxwell... Seriously not being able to get any core overclock on stock volts is something I have never seen before and the same goes with not being able to undervolt a card at all on stock clocks is new as well. Either way, it's disappointing. Sent from my HTC One_M8 using Tapatalk

Yeah I will probably be following the same course once I dig through my email and find the stick vbios. I am not as concerned about temperatures as I am about concern over the card itself. These cards are pushed to their limits and they are buggy out of the box. I'd hate to have one fail and not be able to get it replaced under warranty. I just don't have confidence that these cards will last. I wish that my machine came with 780s... :\ Sent from my HTC One_M8 using Tapatalk

Yeah I bricked mine initially but that was a test BIOS. I don't think there is a real risk of bricking with the final release unless you lose the power or get a corrupt file but since it's archived, that's doubtful too. I lucked out and had my old Alienware M17x that I stuck the master in and reflashed then used that to flash the other one. You can also flash a single card to make sure the worst case scenario you'd have to make the master a slave and boot from what would normally be your slave card to reflash. It's a 15-20% performance boost though and if you get lucky, you'll be able to overclock (my cards are unfortunately quite weak and can't muster even a slight undervolt so my overclocking was limited to +450 on the memory) or at the very least, you might be able to undervolt and shave the temps. Sent from my HTC One_M8 using Tapatalk

My temps were still in spec... But conditions happened that caused me to have to open up the machine and pull a video card which meant a repaste. Pulling the video card revealed a pool of IC Diamond underneath the heatsink. It was only a few degrees drop but it was still a drop. As for the slave running cooler than the master, that's correct but not usually that large of a disparity. Either way, one maxes at 89C now and the other at 87C and that's with the unlocked vbios - spec is anything under a sustained 90C according to Sager and when the GPU hits 89C, the fan hits almost max and it will stay around 82C-83C after that. Watch Dogs is the only game that pushes it up anyway, my other games I limit to 60 FPS with nVidia Inspector and see temps in the 70s.

Prepare to redo it yourself. I, too, had them apply IC Diamond to my system and my temps were high. I repasted and they're 2-3C lower on idle and 4-8C lower on load (one of my 880Ms is about 6C hotter than the other one no matter what I do, it appears to be a design flaw in the cooling system of the P377SM-A). I was using MX-4 on my GPUs and I don't think that there is enough pressure on the heatsinks to use such a thin paste, my temps hit the max of 92C and the GPUs throttled and I applied it six times. IC Diamond is not the easiest thing to apply to a CPU though... I messed that up a few times and I *still* have one core that's hotter than the other three after doing a small line across the entire middle of the die on the last application but its only a 1-2C difference from the other cores and still is a 3-4C drop from the stock paste job.

I don't blame you, I would prefer stock too if that was my situation!

Well my iGPU is disabled as well due to the 120hz screen. The dGPU has to be hooked up directly in order for 120hz to function so iGPU is disabled regardless. This is a tech limitation on nVidia's side so you shouldn't have an iGPU either. I was just saying that it didn't happen on my machine so its a factor other than just a simple 120hz issue, that's all. Hope it gets sorted for you.

I have no problems with 120hz on my Sager NP9377... I don't think there is anything wrong with the vbios unless there is something specific I should be looking for... Off battery On battery

Oh man! Thanks for that! I was wondering why my fan was always running and my GPUs were idling in the 40s! Worked like a charm and now I finally can barely hear the fans when the system is idle.

Thanks guys. I'm loving the machine. Getting used to Haswells and Keplers respective heat output has been tough but I'm very happy with it overall. 880M is a bit overkill for what I do but I built a desktop with a 4770k and 780 Ti the other day and the laptop outperforms the desktop in all but CPU intensive things, very impressive indeed. Sent from my HTC One_M8 using Tapatalk

Thanks for the info. I won't use it, Valley will work just fine for me. So I got my replacement screws today and was able to put ICD on but I decided to compare the week old MX-4 to the brand new ICD application. The result was pretty amazing actually. I think svl7 is correct that this machine doesn't have enough pressure on the heatsink for a thin paste like MX-4. Here's the HWMonitor when Valley was running between the two: Now I should note that I had the fans on auto when I started the benchmark to see where it would go. The card kicked to 87, fan kicked up and knocked it down to 83C but the MX-4 card didn't fare well at all, hitting 91C and then triggering fan on max which kept it between 89 and 90C. The ICD card, on the other hand, went no higher than 82C when the fans were on full (I used FN+1 to force max fans). Very impressed with the ICD performance and tomorrow will do my secondary GPU with the compound. In short, it looks like ICD is the best to use for the Clevo models that have this type of heatsink (there are a few). I also don't get what the complaints are about getting the stuff out of the tube? I pushed the syringe a little bit, it started to come out slowly, I tapped in the middle of the clean die and the blob went down. It didn't come out like MX-4 but it wasn't overly difficult to me? I must be missing something here.

Oh my. Didn't know that. How does it fry it? I won't use it ever again. Sent from my HTC One_M8 using Tapatalk

Well the MX-4 appears to be working slightly better... the GPU still hits 92C but it takes a good bit longer than before. Apparently it does have a curing period, regardless of what they advertise. 10,089 Firestrike w/ a 450MHz memory overclock NVIDIA GeForce GTX 880M video card benchmark result - Intel® Core i7-4940MX CPU @ 3.10GHz,Notebook P377SM-A Its unfortunate that my GPUs will not undervolt at all and get so hot that a core overclock would just cause serious throttling of the memory with the modded vbios so I fear I won't see much better performance than that. With that said, its faster than my new desktop with a 780 Ti and is making me rethink SLI for that system now lol

Wow what a nightmare... At least removing the power seems to fix it. Has it been confirmed to be an issue on Clevo machines as well? Sent from my HTC One_M8 using Tapatalk

I already have it for my VI Formula. Wasn't beta it was the latest release on the site when I went looking for a BIOS update to see if I could get a better overclock. Sent from my HTC One_M8 using Tapatalk

Luckily ASUS went against Intel and released a BIOS update to add Devils Canyon to their upper tier Z87 boards so I don't have to give up my VI Formula just yet. I turned off the OC for now. No point. Sent from my HTC One_M8 using Tapatalk

Add me to the list of poor overclocking Haswells... Brand new 4770k... Can't seem to get it stable at 4.4GHz. I've got it at 1.31v right now after my last WHEA just happened at 1.3v Not happy. Corsair H100i is keeping it relatively cool (75C under load with AI Suite on the silent fan setting) but I'm going to replace this POS with a Devil's Canyon. Sucks that I literally just got the chip yesterday (actually built the whole machine yesterday - the H100i is noisy as hell, praying it doesn't fail because the NZXT Phantom 410 does not make it easy to do anything with the water cooler... I'd have to pull out the entire mobo. It doesn't seem too bad on silent mode though and temps are acceptable so I'm not terribly concerned about that but the voltage... I don't know, I think when you can't get it stable at 1.3v, its time to get a new chip or accept that it just won't go there. It won't even do a stable 4.2GHz overclock on stock voltage. EDIT: Wow, OCCT trashed it. That Linpack AVX is no joke. Hit 86C in a minute, 45 seconds and stopped. By the way, its actually 4.2GHz when all 4 cores are going (apparently the BIOS unlinked the cores, I had it set for all cores, not per core) and its still WHEA... this is one seriously horrible chip.