The Wanderer wrote: > Any power-related advice for SSDs? > > In the system I'm planning to build, I'm expecting to have something > along the lines of two M.2 SSDs (RAID-1), presumably in the NVMe 2280 > form factor you specify, and eight or more SATA SSDs in a 2.5" form > factor (RAID-6), along with a discrete GPU, probably a discrete sound > card, a collection of fans, and of course whatever the motherboard and > case may need (not excluding USB ports and the devices attached to > them).
You can look up maximum power draw for every major component. For example: An AMD Ryzen CPU draws between 65W - for a low-end desktop processor like the 3400G - and 105W - for the top end of desktop CPUs. A low-end external GPU can draw 40W, and a high-end 300W. The motherboard itself will rarely draw 30W. The most efficient SSDs consume 2W apiece at max load, and the least efficient can use 5W apiece. So: a desktop system might have: 105W high-end CPU 140W mid-range GPU 20W motherboard 40W 10 not-so-efficient SSDs ---- 305W suggests that you want to buy a 350-500W power supply from a reputable manufacturer -- I especially like Seasonic, Antec and EVGA, but there are lots of high-quality brands. If you have a 65W CPU, a 40W GPU, and 1 SSD and 1 spinning disk (14W max), a 185-250W power supply is a good idea. Below 185W, there are DC-DC power supplies for low-power systems that use external AC-DC bricks like laptops (frequently exactly the same as higher-end laptops) which are efficient, cool and quiet. -dsr-