this PSU for HD7790
is an acbel 500w PSU enough for an HD7790 with an i3 540? the PSU have 3 12V rail with 18A each for a total of 36A
Bottom line first, YES , but if you have not bought it I would recommend a lower wattage Higher quality PSU
IF not bought yet, take a look at:
Best choice “Gold” Seasonic - $76
For $60: Rosewill “gold” (Most Rosewill are crappy PSU, BUT not this one.
For $50, Corsair CX430
1) Your total system power should be approx 175 Watts to 250 W under load (ie runing Furmark).
2) If your acbel is a acbel Polcom then it is a tier 3 PSU which means it is exceptable quality - Myself I prefer my PSU be rated as tier 2.
IE a Tier 2, 450 Watt PSU would be better than a 500 Watt tier 3.
Tier List: http://www.eggxpert.com/forums/thread/323050.aspx
Looks like a tier 2, 450 Watt PSU would even support two 7790's in xfire
@ delmetor "It needs 21A and 500W min." I'm guessing you got that from GPU Manuf. Their ratings are based on about a tier 4 PSU which may only deliever about 60% of rated power under load!!!
The OPs system will be = to or less than 200 Watts. A Seasonic 350 Watt PSU would power his system and last a long time, UNLESS Crossfire is in his future.
NOTE: Minor fib by manuf: two +12V rails @ 18 Amps. This is NOT really true. IE if you did draw say 17 Amps on V1 then V2 would be limited to < approx 8 Amps as Total power can not exceed 350W (ie (18 + 18 Amps) * 12 V = 432 Watts, YEA, give me a break, from a PSU rated @ 350 Watts.