michael-evga

Hello evga forum!

Exactly the thread I was looking for! I recently got a 670 FTW (love it) and am looking to make adjustments to keep it under 70c when under heavy load since thats where thermal throttling kicks in.

The full 'auto' fan speed setting with no software in the loop runs the fan at a nice and quiet 30% level at idle, perfect for netflix. But under heavy load, with temps in the mid/upper 70s, the fan is only running at 55%, not so perfect for farcry3.

I see the custom curve option in PrecisionX. Don't like that because it requires software (precisionx) to be running in windows to actually monitor temps and control the fan speed. Would like logic on the card to be handling 100% of this function w/o any program being in the loop (the cpu is very busy doing other things).

I see the option to just enter a percent and have it run at constant speed. This is how i've been managing it.  With it set to 60%, generally stays under 70c. That works, but is somewhat tedious to set it up before gaming and take it down after.

My question is, is there any way to get the GTX670 (in hw/fw, no sw in the loop) to be more aggressive about running the fan speed up as temps go up. I don't want a fancy curve, just a steeper ramp than the default one provided by 'auto' mode. So that at 75c the fan is running at 70% instead of 55%.

If that more aggressive auto mode existed, I'd just leave like that always and it'd be perfect for netflix and crysis3 and whatever else.

I think the answer to my question is "no", but thought I'd ask in case there's an option I don't know of?

ps: I do have case fans: 2x 120mm intakes 1400rpm, 1x 120mm exhaust 2000rpm (regulated by cpu temp) pushing thru a radiator. Cool air supply in the chassis is decent, not so great as some folks with bazillion of fans, but adequate. Cool air is definitely available to the GPU. Its sits low in the chassis and an intake fan blows unobstructed in its direction from the front to the back of the case. I tweek the case fan speed settings for prior to gaming to cool more aggressively, but it would be nice to not have to tweek the GPU fan too.

Cheers!

michael-evga

HeavyHemi
If you only have one fan exhausting through a radiator, adding another exhaust fan might help considerably. Secondarily, the auto fan control on the GPU is controlled by the BIOS. Yes there are ways to modify this but, if it goes bad, you risk losing your warranty. 

I've definitely thought about adding another out fan, push/pull on the radiator would fit (i think). I don't have the power pins on my MB to do it cleanly. I would have to drive 2 pwm fans off of one plug. Not sure that pwm power arrangement would really work?

I should run it with the case open and an external fan blowing across it to get an idea of how effective more exhaust could be? Or maybe add some additional exhaust in an ugly (externally powered and kind of duct taped in place) way as an experiment. I do have a couple of spare case fans to play with (1600rpm slipstream + 1400rpm silverstone, both non-pwm).


I do know that running the GPU fan up does keep the temp down considerably. Borderlands2 at 60% fan speed makes for a max GPU temp in the mid 50s (chilly). Farcry3 is more demanding. Another thing about my current manual process that I don't like is that I have to have a sense of how demanding a particular game is. Will 60% work for crysis3, not sure? Anyway... primarily, I'm looking to better automate that GPU fan guy.

Can you tell me more about adjustments to the auto fan control in the BIOS? I don't want to load a 'hacked' unsupported BIOS, but if there are tools with which to set some params that the default BIOS reads... i think that's what i'm looking for!