OTOY Forums

Hey guys,

Building a rig, have 2 questions:

1. Does clock speed of gpu matter or go with reference?
2. Is stock cooler better for pushing air than lets say ASC 3.0 on evga?

Basically question is 4x Regular Nvidia 1080 or 4x 1080 EVGA classified to live in one case right next each? (case has glorious venting) will classified perform faster in octane ?

Thanks!

With four GPUs it's better to go with reference coolers. Non reference units with bacplates on the back would not be able to keep that high clock speed under load due to thermal throttling, so those "better" cards would actualy not perform any better =)

glimpse wrote:With four GPUs it's better to go with reference coolers. Non reference units with bacplates on the back would not be able to keep that high clock speed under load due to thermal throttling, so those "better" cards would actualy not perform any better =)

Thanks!

And OC'ing cards obviously helps ?

Gotta warn you here, I used to have a rig 4 GTX 980 Tis, all reference cooler, and even though the case has insane cooling it still wasn't enough and the cards got so hot that they started to throttle... it ruined performance, cards didn't enable their GPU boost.

So what I did was put 2 cards in another rig and then put in 2 GTX 980 Ti hybrid cards... now all is good and all the cards can OC and run cool. Pic:

http://guusthissen.nl/imagehost/4_gtx_980_ti.jpg

What I would do in your case (I'm building a 1080 rig soon actually) is go one step up from the EVGA classified cards and get EVGA hybrids. So see how many would fit in your case and then use classified cards to fill up until you have 4 GPUs.

Yeah, if you can swing it, four hybrids are your best bet, lapaev. You simply can't go wrong with them, especially when you do a fair amount of rendering. I'm planning on replacing my case with a Thermaltake Core X9 in the near future and adding two additional EVGA 980Ti Hybrids. I could do it with my current case, but I would have to Dremel® a couple holes in the side panel and make custom mounting brackets for the rads... just easier to plunk down the $150 for a X9 and still have plenty of space left over.

I second Frank on the hybrid cards and the x9 case. I have 4 EVGA 980ti hybrids in a Thermaltake X9 in addition to a Corsair h115. 3GPU radiators + the h115 are mounted on top and one GPU rad on the back as exhaust. Also the GPU's are mounted vertically so there's less stress on the PCIe socket.

Even with all 4 of my cards overclocked about 150+ mhz and +500 Ram I never go over 50 degrees when rendering. (I do animation too, so sometimes I'm rendering 24+hrs at a time non-stop). Each 980ti scores about 140 in Octane Bench (563 total), so definitely worth it to water cool in some way.

Im running on 4 x 1070 Evga hybrid, temps right now rendering is. 43, 41, 41, 35.
So if you can fit all the radiators i can realy recomend that setup.
And if ya wana spend more i gues the same card in 1080 still will be rather cool.