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5870 Crossfire or 5970?

post #1 of 48
Thread Starter 
Hello guys,

I currently run a i7 920 at 3.8ghz, a single Sapphire 5870, 700W GameXstream PSU and was wondering the following..

Keeping in mind that I do not plan to OC my GPU higher than the overdrive lets me in CCC what do you guys recommend?

I am trying to decide whether to buy another 5870 for around $300 CAD nearby at a Canadacomputers, or sell my current 5870 and buy a single Sapphire 2gb 5970. Also, would I have to upgrade my PSU? I know that the 5970 requires an 8pin plug which my 700W does not currently have.

I like to run my games on maxed out settings, 1920x1080 res. I play ARMA II, operation flashpoint, Crysis warhead, waiting for crysis 2 and so on.

Thanks!
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post #2 of 48
Because your PSU doesn't support it, I'd get another 5870, and you'll have better performance as the 5970 is really a hybrid between the 5850 and 5870
     
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post #3 of 48
Quote:
Originally Posted by Balsagna View Post
Because your PSU doesn't support it, I'd get another 5870, and you'll have better performance as the 5970 is really a hybrid between the 5850 and 5870
No it's just a downclocked dual 5870 as it still has the same number of shaders
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post #4 of 48
two 5870s will be faster and cheaper too
post #5 of 48
Quote:
Originally Posted by railfan844 View Post
No it's just a downclocked dual 5870 as it still has the same number of shaders
Thus it being a hybrid....
     
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post #6 of 48
Thread Starter 
Thanks for the feedback, im currently reading up some reviews and it does seem 2 5870s is the way to go, specially since I have one and I don't need to go through the hassle of selling my current one Does anyone have a 5870 crossfire set up with similar system specs??
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post #7 of 48
I have same specs and a 5870. Is your card reference?

I'm in the same boat and want to either get another 5870 or sell it and get a GTX 580
     
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post #8 of 48
Thread Starter 
If you look at reviews, 5870 seem to be the way to go, especially since you can get them for about 350 CAD and under (if your in canada). But the only problem is my PSU has one PCIE1 and PCIE2 cords, I don't think I can support 2 5870s without getting a new PSU :S
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post #9 of 48
Another 5870 for sure. Check out the marketplace here, they've been selling for as low as $200 here lol. Also, I wouldn't use CCC to overclock your cards... it told me my 5850 was fine to run at 1060/1265, which immediately crashed under any kind of stress test. Use MSI afterburner and something like the OCCT gpu test, furmark or something similar to make sure its within temp/stability limits. OCCT has an error detection feature I really like, so that'd be my recommended one. Afterburner lets you set the fan profile too, keep those puppies below 80C

If you're talking about the max you can set the clocks to in CCC, then yeah you're good and disregard the above info

EDIT: Your PSU might be ok though, 700/750 is usually the low end for crossfire but Jonnyguru gave the Xstream an 8, not to bad.
http://www.jonnyguru.com/modules.php...Story3&reid=24
Edited by asuindasun - 1/23/11 at 1:51pm
post #10 of 48
Thread Starter 
Where do you get it for 200 dollars? Can you provide me any links, and are they second hand? I have a sapphire 5870 1gb (game edition). They sell for 349 here on canadacomputers and they don't have any on newegg.ca =\\. And also my 700PSU is SLI ready not crossfire =\\ it lacks a 2nd pair of pcie1 and 2 cords. Thanks!
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