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7770 vs 6790 vs 6850

Last response: in Graphics & Displays
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ye 550w is enough. The 7770 is a really good card and will use less power than the 6850, however the 6850 has a higher memory bandwidth so i would think in most games it will equal/outperform the 7770.

That Power Supply (having looked online) looks ok but im not familiar with the brand. Might want to have a look at the amps on its rail (rails) and make sure they are sufficient on the 12v rail for that card. Its 125 max tdp so 125/12 ~10 amps. you will need more than this available of course for the rest of the system, at least 35 in total i would say.
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burgessanthony said:
ye 550w is enough. The 7770 is a really good card and will use less power than the 6850, however the 6850 has a higher memory bandwidth so i would think in most games it will equal/outperform the 7770.

That Power Supply (having looked online) looks ok but im not familiar with the brand. Might want to have a look at the amps on its rail (rails) and make sure they are sufficient on the 12v rail for that card. Its 125 max tdp so 125/12 ~10 amps. you will need more than this available of course for the rest of the system, at least 35 in total i would say.

FSP is a pretty big PSU OEM, they just rarely sell under their own brand. Some Antec PSUs are made by FSP.
The quality of FSP PSUs in general isn't the best, but they're usually not terrible either.

geekapproved said:
Well you haven't even told us what the rest of your system is but odds are a quality 400w would be fine.


3 HDDs, 2x2GB ~1600MHz RAM, Athlon II x4 651, ASUS F1A75 Motherboard

Sakkura - Thanks for the info! I figured it probably wasnt a terrible PSU so I didnt want to give the standard response of "its not Antec/Seasonic/Corsair so its rubbish!"

actually just looked at the spec sheet and its very decent, so OP you should have no issue with the 6850 and this PSU
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