MSI Radeon R9 280X TwinFrozr IV GAMING OC 3GB GDDR5

[hakeriukasx]

Hello, Can i use 4-5 MSI Radeon R9 280X TwinFrozr IV GAMING OC 3GB GDDR5 on this motherboard Gigabyte GA-990FXA-UD5 ?


GPU :http://www.guru3d.com/articles_pages/msi_radeon_r9_280x_twinfrozr_gaming_oc_review,2.html

MOTHERBOARD:http://www.gigabyte.com/products/product-page.aspx?pid=3891#ov

I asking because im afraid of that motherboard doesnt support these GPUs.

[crazyates]

I have that UD5. I've only ever had 3 GPUs with it, but IIRC other people have had 4-5 GPUs on it with no issues.

The only problem I've ever had with this board is on my gaming rig, I couldn't overclock the CPU. Well I could OC, but the vdroop was so bad I had to jack the voltages up way too high, and then the temps were unmanageable. But that has nothing to do with mining, so I digress.

[af_newbie]

I have two systems with that motherboard.  One has four R9 290x, the other has four 7950.  All on powered risers.
AMD 13.12 Catalyst.  compiled cgminer with ADL code removed.

[hakeriukasx]

what kind of power supply you use for  4 gpus?

[af_newbie]

what kind of power supply you use for  4 gpus?

R9 290x: 1200W for first three, 550W for the fourth one.  The rig pulls 1200W from the wall.

For my next build, I'd use 1000W for first three+mobo and 850W for the next three.

[hakeriukasx]

nice nowadays gpus are very expensives i dont if my rig gonna make ROI even if ill spent 3000$ to make around 2800-3100kh/s,its very hard even i dont have much experience but very excited waiting my orders ,and now looking for psu suply,i thinking to do like u,ill buy better two cheaper psu instead of 1 powerful but overpriced.1 question i heard that some psu doesnt support some gpus I think it doesnt even matter