Reply 20 of 36, by Tetrium
The Serpent Rider wrote on 2021-11-20, 10:20:wrote:
You sure 2x Athlon XP (which can have a max power dissipation of up to nearly 80W) will run on 25A on the 5v rail?
From what I've seen, almost all, if not all dual Socket A mobos use additional connectors, which most likely 12v rail. So realistically - dual Tualatin setup is maximum what you can power from 5v rail via standard ATX plug. There're also limits to what ATX connector could take, before quite literally starting to melt.
I never saw a dual sA board for myself, so learning that many of these boards most likely power the (so to say) extra power from 12v is really good news! (for me as I only just now learned of this).
Tualatin should have a maximum TDP of around 35W or so? So 2 of these and a single AXP (with neither CPU overclocked that is) should be rather close when it comes to how much heat they will produce.
And I definitely agree with the ATX power connector having potential issues with melting under the stress of these CPUs, I've come across several of these myself unfortunately.
In my personal opinion I would still rather want use an older more period correct (but fully functional!!!!) PSU for such 5v heavy builds (as they worked fine back then as well), but logically it's simply a better idea to use a new PSU for this task if a proper one is available if only because of safety concerns.
Obviously for any 12v heavy rig, the easiest thing would be to simply use a modern PSU as older mainly 12v PSUs have much less merit.
I wonder if a list exists of dual sA board's 5v and 12v power draws. Like I said, I never saw one in the flesh so my knowledge of these boards is very limited.