My Tesla P40 arrived. I foolishly thought I could simply remove the shroud and attach some fans to it.

[t33to]

Anyone here managed to de-shroud one of these things and then attach fans to the heat sink? If so, would you mind sharing with me how you opened up the heat sink?

[Needfuldoer]

Those heatsinks are designed to have air flowing through them, pushed by the wall of high-static-pressure blowymatron fans servers have.

 

Your best bet is one of those 3D printed adapter shrouds that lets you stick a blower fan on the end.

[t33to]

I understand that, but the K80 seems to be able to be cooled just fine with some small fans strapped to the side of it.

 

[SImoHayha]

11 minutes ago, t33to said:

Anyone here managed to de-shroud one of these things and then attach fans to the heat sink? If so, would you mind sharing with me how you opened up the heat sink?

 

 

Fond a video for ya. Tehy tear it down pretty quickly within the first 2 minutes of the video

[t33to]

1 minute ago, SImoHayha said:

 

 

Fond a video for ya. Tehy tear it down pretty quickly within the first 2 minutes of the video

Thanks, I appreciate that. But I don't have the length in my case to strap on one of those blower type units. I'd rather just use some 92mm fans on the side of it, or better yet would be 120s. I have a 3d printer and am crafty and will come up with something but I'm just curious if anyone has already done this with a p40.

[SImoHayha]

2 minutes ago, t33to said:

 

Welp you could just make a shroud that just accepts a 90 degree can I bet instead of a blower to save space.  IDK if it would work the same per say.

 

a quick google search shows this

 

[t33to]

1 minute ago, SImoHayha said:

Welp you could just make a shroud that just accepts a 90 degree can I bet instead of a blower to save space.  IDK if it would work the same per say.

 

a quick google search shows this

 

Again, I don't have the room in my case for such a setup and am determined to mount fans on the side like a regular desktop gpu. Thanks for your help though!

[ShadowChaser]

do you have room to attach two 40mm fans on the end? Due to the heatsink design it isn't possible to flow air in the way you've described. The finstack is enclosed at the end that you want to attach fans to. It's harder to describe but if you look through the fins it'll be pretty obvious what I mean.

I recently designed this adapter to put dual 40mm fans on my P40. Regular 40mm fans can screw in and deeper fans clip on. When I tried with regular noctua 4020s it is somewhat borderline but with proper server fans it can be cooled but is loud.

[t33to]

2 minutes ago, ShadowChaser said:

do you have room to attach two 40mm fans on the end? Due to the heatsink design it isn't possible to flow air in the way you've described. The finstack is enclosed at the end that you want to attach fans to. It's harder to describe but if you look through the fins it'll be pretty obvious what I mean.

I recently designed this adapter to put dual 40mm fans on my P40. Regular 40mm fans can screw in and deeper fans clip on. When I tried with regular noctua 4020s it is somewhat borderline but with proper server fans it can be cooled but is loud.

Very nice. Very compact. How loud is that and do you do any LLM inferencing on it? What kind of sustained temp can you hit?

[ShadowChaser]

25 minutes ago, t33to said:

Very nice. Very compact. How loud is that and do you do any LLM inferencing on it? What kind of sustained temp can you hit?

Noctua 4020s are inaudible - Get about 150W of TGP at 80C
Arctic 4038s @5k rpm are drony - Get about 180W of TGP at 80C (This is what I daily drive as F@H rarely needs more power than this)

Arctic 4038s @15k rpm are jet engines - Get the full 250W TGP at ~65-70C

 

Originally I got this for some local LLM but 24GB of vram is getting borderline for some of the larger creative writing models and the token generation rate of Pascal is just not it chief. I think I'll be getting something Turing based for inference in the future. In the meantime, this is generating science and keeping my apartment warm  

[ShadowChaser]

To be completely honest you should use one of these: https://www.newegg.com/silver-raijintek-0r100006/p/2T3-0007-00003

Plus some cheapo heatsinks to slap on the memory ICs if you wanted to cool this gpu the way you want to. But for that amount of money you probably could've gotten a better GPU to begin with... such is life.