Originally Posted by iFreilicht
93° is toasty, but the GPU will survive it. If the caps on the card are of high quality, they'll last more than long enough, too. You'd have to take a look at them to be 100% sure, but it will probably be fine. I'd personally prefer the fan to spin a bit faster to get lower temps, though. There could be two reasons why it doesn't: either the card will never output even close to 12V because it was optimised for the stock fans which don't need to spin at full RPM, or the PWM fan you got now will not go above 68% without PWM input.
Either way, very cool mod!
Correction, the fan gets up to 73% at 94°C before slowing to 68% once "cooling" to 93°C. I'm going to play with it in Afterburner since I haven't touched anything in the software side of things yet, just hardware. You're probably right that it's using the stock fan curve. I'm just glad that it's in equilibrium somewhere and not throttling!
It's been running Asteroids all night with no signs of any issues so I'm not too worried. 1020MHz sustained at 94°C for about 12 hours is pretty good in my opinion.
Originally Posted by tabascosauz
It doesn't appear to be a Quadro 600, which is a GF109 card and really is ancient. The HP Quadro 600 has a different cooler and what appears to be a better fan and heatsink. The Quadro K600 is the one with the puny fan that isn't really on top of the heatsink; that's a GK107 card with 50% cut. It really is quite a shame that the fan on it is so small and poorly designed, but 50% GK107 actually draws a little less power than 60% GM107, so the heatsink looks like it was designed with that in mind.
I looked on Newegg and saw that the mounting holes for the Quadro K620 (GM107) appear to be the same as that of the K600 (GK107), so naturally I wondered, assuming the hole spacing was actually the same, what a K620 cooler might have done for your card (of course, K620 is also more expensive). And to be fair, reference 290X have survived temperatures of 94°C so I think you'll be fine for the time being. Could MX-4 do a better job than that ceramic TIM? I've heard not-so-good things about that one before, about how long it takes for temperatures to settle down.
Edit: OOps my bad, it definitely is a Quadro 600. And that card's TDP is also lower than GM107 parts. Hmmm. Maybe mounting holes for GF109 LP = GK107 = GM107?
Explain why my K600 has a GF108 die on it! Checkmate atheists.
(To be fair I never took a picture of the cleaned dies of either - my bad!) Honestly, I'm not entirely sure any K-series Quadro would be much better. Their coolers don't look to be much larger, but the cheapest K600 I saw was more than twice as much as the typical 600s. Now, if they use copper, then we might be onto something. This one is just solid aluminium.
Could MX-4 do better? Almost certainly. Am I going to go out, buy some, and reapply it? Probably not. One, I'm cheap, two, I'm lazy, and three, no BSODs yet!
I haven't touched the fan curve at all either and I'm sure that's part of it. I'm thinking ~40% speed up to 60°C or so, and then gradually increasing to 100% once it starts boiling water.
Originally Posted by Jimbags
I might try this mod on my gtx 750ti using my old gigabyte gt210
Using the center of the screws as vertices, you should see a rectangle approximately 41mm x 23mm. If it's off by a little, don't worry too much - either I measured it slightly off or you did. But some of the LP GT 210s on Ebay appear to have ~60mm x ~30mm or something like that. Massive spacing for such a small card.
EDIT: Here's the stock fan curve. I don't think it works too well with a cooler this small...
So I'm off to make that a bit better. Hopefully it'll sustain 80°C or so in Asteroids or a similar compute load.
You moron... That's the custom curve I set for my 280. I'm not sure if the 750Ti is trying to use that too. Good thing I took a screenshot...?
EDIT 3: Oh lovely. I don't think it's even possible to have separate fan curves for separate GPUs. Nice job guys.
EDIT 4: Changing that third pin from 55% @ 90°C to 70% at the same temperature seems to have done it. That, and setting a fan hysteresis (i.e. a small margin or buffer of sorts so changes aren't instant) cut temperatures down to 85°C. That's with the case fans running at just 5V. Cranking them to 7V has minimal impact on temperature or noise, but 12V cuts it to 80°C at the expense of noise. It's white noise so I'm not too worried. If I can find a way to have multiple fan curves then I'll tweak it later, but this seems fine for now. I don't plan on overclocking of course. Edited by CynicalUnicorn - 7/27/15 at 9:00am