Watercooled octane render workstation TITAN+3x 780 6GB

[smicha]

Added 4x140 fans for 560 in push pull and replaced all fans with PL2 + aquaero.

[brasco]

Looks fantastic Smicha, will you comprehensively benchmark everything once it's all complete?

[smicha]

Looks fantastic Smicha, will you comprehensively benchmark everything once it's all complete?

Sure. I did some benchmarks - if you look at the scores for single TITAN and 780 - the highest scores are mine.

[glimpse]

Nice, Smicha! =)

& I have to say..that controller looks not so bad =)
especially in that mode listing temps =)

how's the noise level now?

[smicha]

Actually I can set fan curves to turn all fans completely off at certain temperature. So at 25C (idle and 3D modelling) it's all dead quiet (actually almost - pumps are not off, but at 1600RPM d5 there is almost pure silence). I am awaiting water temp sensors so I'll connect D5 also to aquaero.

The most neat thing about aquaero is that when you stop rendering temps of gpus go down immediately and fans slow down right after it. I set fan curve at max 50C for gpus and all fans never exceed 1000RPM and temps are no higher than 43-45C.

[sadece]

gorgeous!!! i want that rig mine

[glimpse]

Thanks for sharing Smicha! =)
that interface seems nicely crafted & intuitive
(seen the video You've linked earlier =)

Nice to see this entire build getting better & better.

[smicha]

Thanks guys!

I swapped top fans (8 in push pull) to pull air out of the case instead of push - it's much cleaner now. I still don't have demciflex filters but 100$ (for 3 of them) seems to prevent from such investment for now.

Today the package with all fittings and reservoir for 2xZs has been sent and one more 300mm res for me. So I'll replace the EK res and put 2xD5 in lower chamber.

I also noticed that extra 140mm fans on Phobya 560 also cool PSU more efficiently from its back. It's cool even when it draws 1000W.

[reckless]

Due to large interest of power draw, min PSU required I am posting results from heavy stress tests from FurMark and for Octane. I had ability only to stress 780 on FurMark, single and 3-way SLI. Titan is tested in Octane.

System at startup: 170-400 W, idle 170 W

GTX 780:
FurMark 100% power 440 W
FurMark 110% power 470 W
Octane (not overclocked) 68% power 320 W

3x GTX780 (3way SLI on for FurMark), Titan off.
FurMark 100% power 957 W
FurMark 110% power 1035 W
Octane (not overclocked) 68% power 670 W
Octane (overclocked @1200core, 7000 mem.) 77% power 730 W

3x GTX 780 + Titan
Octane 917 W
Octane (overclocked) 955 W


Hence:
GTX 780 draws 150W (180W overclocked) in Octane, while in Furmark 270-300W
GTX Titan draws 170W (225 overclocked) in Octane (FurMark not available)

To run safely 4x gpus - like 4x 780, or 4x titans you need 1200+W PSU with peak to 1500W. Octane although will use about 1000 W. So the rest power will be used for CPU and peaks.

Thanks for those numbers. Very useful.

[reckless]

Just discovered this thread. Beautiful rig smicha. I am speechless