On its own not bad: 6x hard drives would generally peak at under 25 watts over the 5V rail for typical drives. When multiple hard drives spin up, they can pull a good bit of juice from the 5V rail. Here’s why… Pico PSU 5V Amp/Current Capability On the other hand, the old power-hungry machine used a standard ATX power supply.įor this new build, I strongly considered going with a Pico PSU but eventually decided against it. One advantage the previous 10 watt Skylake machine had was that it was powered by an extremely efficient Antec pico-style PSU built into the case and powered from a 19V adapter. Of course if you’re looking at small storage requirements (under 4TB for example), looking at high capacity SSDs will get you high performance with low power draw but with much higher up-front cost.įor my usage (heavy reads, fewer writes), 2.5″ SMR drives were the way to go.Ĥ of the 2.5″ drives means a total of less than 1 watt when spun down, approx 4-5 watts when spun up, and approx 8 watts when actively reading and writing. That said, if you’re doing frequent writes, need fast resilver/rebuild times, or need huge amounts of total storage and are limited by SATA ports, 3.5″ drives (ideally non-SMR for performance) may be the way to go. Going with shucked 2.5″ drives is currently an economical long term choice when it’s viable.
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