PSU okay for sli?

breadturbo · 13 Apr 2017 at 21:21

It's an older system [email protected]
gigabyte z87 g1 sniper
currently running 1x ref 980 and looking at adding a second he can acquire for cheap.

his psu is a 1~ year old EVGA 650GS and the EVGA site states 54amp and 648w on the 12v rail (single)

im unsure on the 980 power draw so thought I'd ask here

HoneyBadger · 13 Apr 2017 at 21:47

Nvidia states that the recommendation for a single 980 in terms of PSU is 500W but states the max power draw is 165W so based on that, you should be ok to run SLI.

mattyfez · 13 Apr 2017 at 21:49

On the nvidia website they list minimum requirements for sli, as in wattage and amps.

mattyfez · 13 Apr 2017 at 21:51

HoneyBadger said:
Nvidia states that the recommendation for a single 980 in terms of PSU is 500W but states the max power draw is 165W so based on that, you should be ok to run SLI.

You need to look at the amps on the 12v rail(s) that's just as important.

Some PSUs have high advertised wattage but a crappy amperage on the 12v supply.

MrRockliffe · 13 Apr 2017 at 21:54

According to Anandtech, their total system power draw under load with a 980 was 315W, so ample.

HoneyBadger · 13 Apr 2017 at 21:54

mattyfez said:
You need to look at the amps on the 12v rail(s) that's just as important.

Some PSUs have high advertised wattage but a crappy amperage on the 12v supply.

Yep I know

breadturbo · 13 Apr 2017 at 22:00

i suppose the worst that can happen is it trips out

cheers guys