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Title: MSI Radeon R9 280X TwinFrozr IV GAMING OC 3GB GDDR5 Post by: hakeriukasx on December 28, 2013, 08:27:08 PM 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. Title: Re: MSI Radeon R9 280X TwinFrozr IV GAMING OC 3GB GDDR5 Post by: crazyates on December 28, 2013, 10:19:49 PM 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. Title: Re: MSI Radeon R9 280X TwinFrozr IV GAMING OC 3GB GDDR5 Post by: af_newbie on December 29, 2013, 05:59:29 AM 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. Title: Re: MSI Radeon R9 280X TwinFrozr IV GAMING OC 3GB GDDR5 Post by: hakeriukasx on December 30, 2013, 12:34:44 AM what kind of power supply you use for 4 gpus?
Title: Re: MSI Radeon R9 280X TwinFrozr IV GAMING OC 3GB GDDR5 Post by: af_newbie on December 30, 2013, 12:56:29 AM 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. Title: Re: MSI Radeon R9 280X TwinFrozr IV GAMING OC 3GB GDDR5 Post by: hakeriukasx on December 30, 2013, 01:16:14 AM 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
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