Tbonephile

Yeah, that's cool. I've requested from svl7 an extension to the 670MX vBIOS that I'm using (and that he provided) so I can use 1.1V and over 1200Mhz on the core. Hoping he can mod it for me. I should be able to get 1200Mhz on my 'measly' 960 cores! ;-) (reckon my GPU would consume just a shade over 100W with that overclock given my current KillaWatt readings)

How are your temps on the 670MX? I have a Clevo P370EM with 670MX running in SLI. I am currently at 1050/1150 CPU/MEM at 1.025 and running about 75-77 degrees while gaming. Currently I get around 8350 on Firestrike graphics and 12600 on 3dmark11 graphics.

Well I just cleaned my heatsinks, so much dust...haha solved the problem on 3.31 I am back to 12650 gpu score on 3dmark11, however when I updated to 3.37 it went down to 11500 for throttling over 87, its annoying because of my fan profile, the slave gpu is a bit hotter on the p370em but average around 82-85 when gaming for a longtime, but the fan doesn't kick on to high until 93 so in benchmarks it throttles it on the newest driver...I just ordered new P375EM heatsinks, hopefully should solve problem.

If it's based on the GPU's getting hot, then you could repaste to prevent them throttling. Strange that you say the latest drivers would make that happen. I don't think that is controlled in the drivers, I think the temperature throttling point is set in the vBIOS. I think it's 87 degC, that's what is says in NVidia Inspector for the one I'm using (never gets that hot though, so don't know for sure if it would throttle at that temperature). How hot are your GPU's getting? (And in my experience the driver doesn't make the GPU run hotter or colder either).

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Ah, that definitely sounds like a heatsink mounting manufacturing defect to me (on the GPU). I'm sure you know that the heatsink surface needs to sit flat against the GPU core, and from what you've described it sounds like there is a gap in some places where it's not making contact. The heatsink should make contact with the GPU even if there is no paste applied - the paste is there just to fill in the microscopic gaps & holes in the heatsink and GPU surfaces (because paste transfers heat better than a tiny air gap where those microscopic holes would be).

I flashed my 670MX ski with SLV7's bios last summer and they worked great, after a few driver updates over the last year I recently ran 3dmark11 and my score was much lower 12600 gpu score to 8900 now. I ran Metro: Last Light benchmarks and I noticed that after 20-30 seconds the video card was throttling like crazy based on heat points. I am still able to OC and over volt my card to the same levels as before but before there was no throttling. I have gone back to older versions of the drivers and still see throttling. Any idea what to do?

QUick question: do the 670mx's really overclock to 680m speeds?

Does anyone know if the p375sm heat sinks fit the p370em? Mainly want better slave up cooling.

I would advice you NOT to use furmark. It's just bad for your GPU..

I have heard that there is a difference between the first batch of 7970s and the later batches with regard to overclocking. Do you know what a typical 7970 can OC on the core?

Is the GPU cooling much better then the P370em? If so I'd like to try to mod the heat sinks to fit my P370em slave card.

If anything I think Clevo is better now. I had a w870cu with 5870m that was like a blow dryer when playing games, my new p370em is much quieter while gaming.

I have a P370em with two 670mx. I am getting 60 degrees primary card and 71 degree slave on furmark. This is with +135 +800 oc stock volts in ambient 25 degree room. Is this larger difference from the ops numbers just due to 670mx being much cooler? Or does it mean my heat sinks are ok?

Because of the core current limit does this mean the 3840 currently has more potential then the 4800mq due to the fact it can hold the plus 400 oc?

If you can find a p370em their on clearance. I got mine with two gtx670mx when oc is basically similar in performance to two 680s. Got mine with 3840qm and 256 gb crucial sad for $1950.