April 3, 201214 yr I'm building a new computer. Not an unraid box. My current unraid box uses a Seasonic Xseries 660Watt power supply. The machine has 13 Western Digital 7200 RPM hard drives installed and I don't even think the fan comes on! Anyway, I'm just debating weather not to spend the extra money on a Platinum series power supply. Here is what I'll be using. Intel 3930K processor 32 GB high speed DDR3 RAM 240GB SSD 2 1TB 7200 RPM drives Asus Sabertook X79 mainboard Nvidia single video card. Nothing real special, like a 6600 model. No video games. Everything else is built onto the main board Do you think I require a power supply above 600 watts with this layout? I'm thinking if my Seasonic 660W supply can handle 13 7200 rpm hard drives then if I bought another it can certainly handle this machine, am I correct thinking this?
April 3, 201214 yr Author Who knows. I did some testing and my unraid box maxes out at like 400watts when it boots. At idle is hovers around 180 watts and is only sucking down 1.45 amps. That's pretty good with 13 hard drives. So I guess to even answer my own question a 600-700 watt power supply will be completely enough for the new machine I'm building. Also, there would be no sense for me to buy a $220 Platinum one either. The gold efficiency ones are still great at such a lower price point.
April 3, 201214 yr I would suggest that 600+ watts would be overkill for your new machine. I would consider something around 400 watts.
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