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Help with tri-fire (3)290x. Heat/spacing

post #1 of 11
Thread Starter 
Hello,

Need some help with my current set up. I had a GTX Titan, but wanted to run three 144hz monitors. Since adding an additional Titan didn't seem worthwhile, I considered 3x 780Ti, but then I read about mining litecoins and thought I should go with AMD to mine when I'm not gaming.

Current Setup:
Processor: Intel 3930k @ 4.6
Cooler: Corsair H110
Motherboard: Asus P9X79 Pro
Memory: Samsung Green 16gb @ 2100
Video Card: (3x)Gigabyte 290x Windforce GV-R929XOC-4GD
Power Supply: Seasonic X-1250
Sound Card: SB Titanium X-Fi HD
Case: Corsair 540 Carbide
Monitor: Asus (3x)VG248QE 144hz
Keyboard: CM Storm Quickfire Reds, PBG Keys
Mouse: Razer Death Adder 2013
Surface: Artisan Hien Soft
Headset: Seinnheiser PC360


I went with three Gigabyte 290x's because they were available and decently priced. The P9X79 Pro I have only has room for the three cards stacked together.

Would getting a eATX or ATX-xl motherboard help so I could get a space between the primary card and the bottom two? (I haven't seen a board that will let me put a slot or two between all three)
Or is water cooling the only option?

As of last night I'm just running two cards, but haven't had a chance to test them with the triple monitors (but from benchmarks, doesn't look like I'll get the desired fps).
Edited by frunction - 2/17/14 at 9:06am
post #2 of 11
Honestly, I would just water cool them. I don't really see a way around the heat/throttling issue you're having while running 3 air cooled 290xs....
Shhhh
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Shhhh
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HTPC/Steambox
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Samsung 850 Evo 500 Cryorig R1 Ultimate Windows 10 Dell S2716DGR 
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Seasonic SS-660XP Fractal R5 
CPUMotherboardGraphicsRAM
i5-3570k @ 4.5 Asus Gene V  MSI Gaming X RX 480 2x8 GB DDR3 2000 
Hard DriveHard DriveMonitorPower
3x4 TB HGST Samsung 840 Pro 256 Panasonic TC-P54V10 SeaSonic X650 
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post #3 of 11
My 2 290X's never go over 45C on water. I have a 3rd one going into the loop so we'll see what happens but yeah. I basically have a 360x60mm XSPC + 420x60mm of Alphacool chilling the loop...
post #4 of 11
Thread Starter 
One card already seems to have gone bad just running two! Only thing I did was flip them to uber, play some games, start mining, and now the main card perma blackscreens. I monitored GPU-Z for about an hour and GPU/VRM temps were just fine.


Going back to Nvidia (3x 780Ti). These cards don't seem to be worth the hassle for chump change I would get mining.
Edited by frunction - 2/18/14 at 12:56pm
post #5 of 11
Switching to Tri-SLI isnt going to help you. My brother ran into the same problem with his GTX 780s. VRMs on those babies were hitting 109C with risers on them. If you have them sandwiched, those cards will just suck the heat from the card below.

We tried without risers and card sandwiched hit 90C on the core in under 5 minutes
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post #6 of 11
I can't imagine Tri-firing 290x on air. My 7950's in crossfire put out quite a bit of heat when they were on air. If they were cooled properly i would think they would work decent with your setup. Especially with a bit of overclocking.
post #7 of 11
Quote:
Originally Posted by boredmug View Post

I can't imagine Tri-firing 290x on air. My 7950's in crossfire put out quite a bit of heat when they were on air. If they were cooled properly i would think they would work decent with your setup. Especially with a bit of overclocking.

They work fine cooled properly.
post #8 of 11
What kinda case does all that radiator go in PowerOver9k? That's a lot of radiator. CPU and cards overclocked i'm assuming?

EDIT: Just noticed.. Phantom 820

LOL.. My second rig had a Cyrix processor. 486 dx2 66mhz. WOOT!!
Edited by boredmug - 2/25/14 at 8:53pm
post #9 of 11
Quote:
Originally Posted by boredmug View Post

What kinda case does all that radiator go in PowerOver9k? That's a lot of radiator. CPU and cards overclocked i'm assuming?

EDIT: Just noticed.. Phantom 820

LOL.. My second rig had a Cyrix processor. 486 dx2 66mhz. WOOT!!


Assume at least 1 component per 120/140mm radiator spot at stock clocks. I have overkill cooling because that's how I do. biggrin.gif
post #10 of 11
I'm running 2x Asus R9 290x under water and temps do not go past 45c. I'm running two RX 480 radiators with an overclock 2700k to 4.8ghz. I definitely went overkill, I don't even feel the 2nd radiator getting hot. Get a Caselabs TH10 case like me and never run out of space.

I'm actually surprised that a 1000w PSU can support the above. Each pulls about 300W and sometimes it spikes so that just seems like a fire hazard now. 3 cards would pull upwards of 900W leaving only 100W for other stuff.
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