|
Title: Need to determine what size PSU(s) for 12 card gtx 1080 setup Post by: adam1111 on February 03, 2018, 11:16:14 PM I would appreciate some PSU recomendations for setting up a 12 card build all GTX 1080 cards. I'm gonna need 2 PSU's The mobo I am buying is
ASUS B250 MINING EXPERT. Which has 3 spots on the mobo for PSU's so to pwer the mobo and six cards how many watt PSU?. And to to power just 6 more cards what size PSU? would a 1200w work for the 6+mobo and an 1000w for the additional 6 cards? Or can I get away with using smaller PSU's?Thanks. Title: Re: Need to determine what size PSU(s) for 12 card gtx 1080 setup Post by: Undefined31415 on February 04, 2018, 12:35:09 AM I would appreciate some PSU recomendations for setting up a 12 card build all GTX 1080 cards. I'm gonna need 2 PSU's The mobo I am buying is ASUS B250 MINING EXPERT. Which has 3 spots on the mobo for PSU's so to pwer the mobo and six cards how many watt PSU?. And to to power just 6 more cards what size PSU? would a 1200w work for the 6+mobo and an 1000w for the additional 6 cards? Or can I get away with using smaller PSU's?Thanks. You could get away using smaller PSUs if you bought 3 PSUs and did 4 cards per section of PCIe slots (perhaps 1x 1000W and 2x 850W PSUs, assuming you keep overclocking to a minimum, and your CPU is reasonable for a dedicated GPU-mining rig). However, this would make expanding your rig in the future more of a pain than if you purchased 2 higher-end PSUs, and left the third section free. If you're always careful to run the cards below full TDP, then perhaps you can get away with predictions showing 90% use (with 1080s having a 180W TDP, this would be 1080W for 6 cards, placing a 1200W PSU at 90% of its rating*). I wouldn't personally recommend banking on your ability to keep your mining system from hitting the full TDP, but some people do it successfully. *This did not include the nonnegligible draw from the CPU and other necessary components. 2x 1200W PSUs wouldn't be enough for a 24/7 rig pushing 12x 1080s at 100%. If you want to play it safe and only use 2x ATX PSUs, try for 2x 1400-1500W. Generally, you want the sum of all TDPs for components connected to each PSU to be somewhere in the ballpark of 70%-80% of the rating, for safe 24/7 operation. Title: Re: Need to determine what size PSU(s) for 12 card gtx 1080 setup Post by: philipma1957 on February 04, 2018, 12:47:16 AM 3 of these
http://www.corsair.com/en-us/rmx-series-rm1000x-1000-watt-80-plus-gold-certified-fully-modular-psu-na-refurbished 4 cards set to 140 watt tdp = 560-600 watts on each psu it will work well |