quadra 800 in 700, PSU concerns

hello,

sorry if the question have been already asked, but i would like to put a quadra 800 motherboard into my quadra 700 case.
both work, but for a project i am doing i needed the max 136mb ram, which my quadra 700 did not have.

so i got a cheap 800, i hate the case (that also came quite bashed) and since they both have a wombat form factor, the 800 just fits.

however the psu of the 800 does not fit and i wanted to drop in just the 700 psu, but when i did with another 800
that died, the transformer of the 700 psu burnt and i had to get a new one. the mobo might have been already dead but not sure if the cause of the 700psu failure was the 800 or the fact that it was just old.

so for the outputs:

quadra 800 psu:

+5: 30A max
-12: 0.75A
≠12: 5A max
≠5 trkl: 0.1A

quadra 700 psu:

+5V:1mA continuous
-12: 1.0A
+12: 1.5A
+5V: 12A

my main concern is the 5V rail, since the 700 psu has max 12A, and with max ram it needs to feed a lot, maybe more than 12A. i won’t use the cd-drive so that’s less and also i have a scsi2sd which lowers the 12 rail but.

does anyone have a suggestion? should i just get an adapter and use a new psu? if so, which one would you suggest?

sorry for the disturbance

thanks!
 
Use a power supply from a IIvx, Centris 650, Quadra 650, etc. Has more amperage than the stock IIci power supply used in the 700 case, but fits in it perfectly.
 
Back
Top