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ATI 6870 PSU Requirement?

Last response: in Graphics & Displays
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October 28, 2010 8:32:19 AM

Hi, I'm currently using a Sapphire 5770 in my computer, and it runs fine no problem. I would like to buy a single Sapphire 6870 to replace my 5770.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I have a 500w antec psu (earthwatts type).
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
The rest of the stuff in my computer is:

+ ASUS P7P55D-E motherboard
+ i3-530 processor (gently overclocked from 2.9 to 3.31 ghz)
+ WD 7200 RPM hard drive
+ Lite-on dvd-rom drive
+ soundblaster x-fi titanium fatal1ty

and 3 case fans

I don't really plan on overclocking the GPU.

i THINK i have enough power to run a 6870 based on some data I read, but just wanted to get some opinions here before I commit to buying.

I read that the i3-530 is a really good match for the 5850 (noncrossfire), and the 6870 is slightly better than the 5850, so I won't be held back by my cpu will i?
October 28, 2010 8:41:43 AM

Corsair VX450W PSU would be enough even with overclocking. But are you planning to add anything in the future?
October 28, 2010 8:43:02 AM

Nope never plan on crossfiring, and I won't be adding multiple hard drives or anything.
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October 28, 2010 8:48:11 AM

Well then VX450W would do just fine. Just asked about your future upgrades so that you can get a bigger PSU and wont have to change your PSU in the future when you upgrade. But since you wont, then VX450W is ideal.
October 28, 2010 8:52:02 AM

I already have an antec earthwatts 500w, guessing since you said a 450w corsair is okay I should be good to go then.

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October 28, 2010 8:55:17 AM
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Yes then you are good to go. The Antec PSU you have also enough for your PC. Considering the total system power with the HD6870 is 280W approx!
October 28, 2010 10:32:27 AM

Best answer selected by sptmaster.
October 28, 2010 12:36:51 PM

Just curious, have u thought about adding a second 5770 in X-fire as opposed to going with the 6870? The performance should be very close, depending on individual titles X-fire scaling, but the dual 5770 route would be approximately $100 cheaper.

Just a thought.
October 28, 2010 1:21:12 PM

Yargnit said:
but the dual 5770 route would be approximately $100 cheaper. Just a thought.


No it wont be $100 cheaper! HD6870 is just something around $240. HD5770x2 would be something around $300. So how can it be $100 cheaper?? :non: 
October 28, 2010 7:47:32 PM

This topic has been closed by Mousemonkey
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