• Most ideal approach to dell server 24pin and 20pin P1 and P2 to 1 24-pin?
    3 replies, posted
I bought a dell server power supply, since it does 90A across 5 12v rails. It's from a Dell Precision 690 and it's rated at 1,000 watts but 18A x 5 = 1,100 watts. I plan to use this power supply to power a Standard AM3+ MSI 760G board. Anyway the pinout is different but I tested green to black and it powered on. That said the rails are split between P1 and P2. P1 has 2 - 12v rails, P2 has 3 - 12v rails. Anyway I was thinking of cutting and splitting/ soldering P1 and P2 to get all 5 rails on 1 24-pin. Or, I could purchase a 24-pin y-splitter and wire accordingly. What would you guy's suggest? Thanks!
I don't know why you'd buy a Dell PSU for a non-Dell application unless you got a [I]really[/I] good deal on it (like sub $50.) Even then, it's extreme overkill for a motherboard like that unless you're going to have like a dedicated RAID controller with a ton of drives. A New one of those 1 kW Precision 690 PSUs is $300, with used ones being in the $100-$200 range, which would be the same as buying a name brand that you don't have to hack apart to make work with non-Dell hardware.
Yeah I got a great deal less than $50. Tested it and it works fine. Just need to wire it up. It's great since it has 5 - 12v rails with a nice 18 Amps a pop. Which yields 90 Amps or so and in the neighborhood of 1,100 watts peak. I figured I could spend $40 on this or spend $350 for a single rail psu that can't pull the stability of a server power supply. Anyway here's my progress :D Wiring Dell Precision 690 P1 24-pin and P2 20-pin to Standard ATX 24-Pin connector. [IMG]http://i97.photobucket.com/albums/l221/chris2006189/1_zps458ef17a.jpg[/IMG] Top left is P1 and pin-out. Above/ below pins are where that must wire to, to abide by 24-pin standard spec. To the right is Standard ATX 24-pin showing info and color. Bottom left is P2 20-pin and pin-out. [IMG]http://i97.photobucket.com/albums/l221/chris2006189/2_zpsd2643cc8.jpg[/IMG]
Well best of luck to you, it's just something I'd never do due to the nature of Dell PSUs being sketchy and having high failure rates in my experience. I more often find myself having to shoehorn standard ATX power supplies into Dell machines due to failed units because getting the exact Dell PSU replacement is ridiculously expensive compared to a much better unit made by someone else. Just remember that Dell wire colors are not standard and you may not be able to get all voltages the ATX spec requires. The units I've worked on had +12v as white instead of yellow and I don't know where they kept +3.3VSB and +5VSB if they even had separate outputs for those voltages. A volt meter is your friend, never assume a voltage is something based on wire color alone.
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