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AMD 7770 and power supply

Last response: in Graphics & Displays
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November 29, 2012 1:59:53 PM

Hi al, I am likely purchasing an AMD 7770 (not sure if 1gb or 2gb) and am curious is a Corsair Builders series 500w PSU is sufficient or if i need 600w. I have an hp with amd2.6, quadcore with 8gb of ram

More about : amd 7770 power supply

a b U Graphics card
a b ) Power supply
November 29, 2012 2:06:25 PM

Cx 430 V2 /Antec Vp 450 (antec is cheaper)

And get the 2 gb version if the price dsnt differ t much.

7770 needs 84W on peak so those PSU are plenty.

Also for brand try Asus/Gigabyte
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November 29, 2012 2:11:32 PM

So even 500w is too much?
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a b U Graphics card
a b ) Power supply
November 29, 2012 2:24:13 PM

Well those 2 PSU i mentioned can get more than its rated wattage so its not a problem. Anw your system want use to much power so no need to get that.


"Cx 430 V2 /Antec Vp 450 (antec is cheaper) "

Those will suffice
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November 29, 2012 2:32:50 PM

Hey i really appreciate the help. I had a whole thread before which said the 500w (before i knew what GPU i wanted) so maybe they were recommending a bit better than i needed in case i wanted to use the PSU in my next system?

Would that be a reasonable idea? To buy a bigger psu if in 2 years i am building a brand new comp?
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a b U Graphics card
November 29, 2012 2:54:42 PM

It depends on your budget. If you can afford a new PSU and the 7870 you won't be disappointed. It also depends on the resolution you're playing at. If it's lower (1280x720 or similar) you won't need anything more than a 7770. If you're at 1920x1080 (or similar) the 7870 is a great choice and will max almost everything out (depending on AA).
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November 29, 2012 2:58:07 PM

dscudella said:
It depends on your budget. If you can afford a new PSU and the 7870 you won't be disappointed. It also depends on the resolution you're playing at. If it's lower (1280x720 or similar) you won't need anything more than a 7770. If you're at 1920x1080 (or similar) the 7870 is a great choice and will max almost everything out (depending on AA).


How do i find out what my best resolution can be?
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a b U Graphics card
November 29, 2012 3:05:50 PM

mastermoirich said:
How do i find out what my best resolution can be?


That's based on your monitor. Whatever your monitors native resolution is, is what you'll be playing games on. It's also the resolution your desktop should be set to. Right click on the desktop, click Personalize, click Display, click Adjust Resolution and you'll see a slider that adjusts your resolution. Whatever the max is what your monitors native resolution is.
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a b U Graphics card
November 29, 2012 3:09:01 PM

mastermoirich said:
ok im 1920 x 1080


Now that you know what Resolution you'll be playing at, now you can make your decision, based on your budget, on which video card to get.

The Radeon 7770 is OK at 1080 but the 7870 is MUCH better. It also boils down to what games you'll playing. If you want to play the latest and greatest, then go for the 7870. If you stick to older MMO's / FPS and you don't mind not having all the eye candy turned on then the 7770 is a great buy for around $100. You're going to pay double for a 7870.
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a b U Graphics card
a b ) Power supply
November 29, 2012 3:10:15 PM

look it at your monitor spec
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!