David Wright writes:
On Sun 07 Mar 2021 at 19:33:42 (-0500), Felix Miata wrote: > The Wanderer composed on 2021-03-07 19:16 (UTC-0500): > > On 2021-03-07 at 19:04, David Christensen wrote:
[...]
> > Isn't progress fun? >> Same kind as when Intel stopped providing PS/2 ports on its motherboards > (and chipset support?). I haven't bought an Intel motherboard since.> There are plenty competitors who know people like their quality ancient > PS/2 keyboards that don't work with USB adapters. Just as wasp expired, I acquired a Dell Precision T3500. It must be one of the last BIOS machines (November 2011), but the good news is that it has PS/2 keyboard and mouse ports, so my ancient IBM keyboard, and a 3-button Logitech mouse, won't be orphaned after all. That was a surprise.
[...] Newer Dell Precision T models still seem to have PS/2 ports, too.I am writing from a T5820 (manufactured 2020) that still comes with two PS/2 ports standard. I have not tested them yet, though, because I am currently using only USB input devices.
Btw. wrt. the thread's main topic: I saw many disks being discussed. The Wanderer wrote:
Any power-related advice for SSDs?
It highly depends on the models. The ones I am using are rated 14W by the manufacturer (operating/loaded). I expect other SSDs to use less power although it might make a good rule of thumb to just assume "15W per drive" for safety?
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
Is there a specific reason for having so many drives? Sometimes, using the M.2 slots on the motherboard will disable certain SATA ports. Most of the time, I try to reduce the number of drives to a sensible minimum (four seems to be pretty standard for client systems) and rather chose larger disks but fewer. YMMV.
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).
Wrt. power I usually start from CPU + GPU (e.g. for my system that would be 165W CPU + 150W GPU, then add some estimate for motherboard+fans (e.g. 70W -- derived from the previous' system's idle power usage) and only afterwards think about storage. I could estimate 30W for 2x15W SSD + 20W for 2x10W HDD. This would total at 435W i.e. 550W PSU would suffice. Of course, if the GPU were to be upgraded or significant amount of RAM were to be added, that would have to be added as extra. Most of the time, I am relying on manufacturer-provided PSUs and for my T5820 configuration, Dell's smallest choice was 950W (more than enough...)
The heavier the GPU, the more sense it makes to chose much larger a PSU than by the estimate, because modern GPUs tend to require "spikes" of power in very short time that can destroy PSUs that would otherwise suffice. I have not found a means to find out about this in advance other than reading exstensive reviews for the respective GPUs of interest.
HTH Linux-Fan ΓΆΓΆ
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