Will my 250W PSU handle this spec??

[UnseenLight]

Ok..so i alr searched around the forum for the same thread but yeah the whole specs different.

Im about to get a Saphire HD 7750 OC 1GDDR5 (its OC but comes equally with the reference type for the core and mem clock). Indeed it doesnt require additional power pin but my PSU is only 255W powered (DELL Optiplex 7020 SFF). FYI, this far i used GT 640 DDR3 in it without having probs, even OC-ing it. But in case for HD 7750, i saw from some benchmark that it is 10-15W higher than GT 640 in real-worl perf. when peak.

Can I use HD 7750 with this PSU then? I dunno about the efficiency detail, but heres my Spec:

Core i7-4790 3.6 GHz
2-2-4 ram config.
1 HDD, 1 Optical Drive, 2 fans (1CPU+1Case)

all helps will be much appreciated!

 

[Lutfij]

1| Per this table, they both need a system with at least 350W's of power.

2| I'd say you're in the same range as the GT640 but please keep in mind that the unit you're working with wasn't meant to undergo loads like you're putting on it.

3| Per this table, the worth while option would be to pick up a GTX750Ti or a GTX1050.

 

[UnseenLight]

So i do must upgrade my PSU? I dont know if theres any Small Form Factor PSU being sold out there with bigger wattage.