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5850 1gb+5850 2gb

post #1 of 12
Thread Starter 
So I'm considering getting another 5850 for Crossfire setup, and in my country 2gigs version cost 250$ and 1 gig costs 280$ for whatever reason I don't know.

So my question is, will they work together in crossfire even they have different memory?

What is minimum PSU needed for crossfire 2x5850?
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post #2 of 12
Yes they will work together though you will only have 1GB usable VRam. As for a PSU I assume a 650watt should be easily sufficient

Actually you may give your current PSU a shot. Looked it up and appears 600watt is the recommended for two 5850's.
    
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post #3 of 12
Thread Starter 
Oh well, thx on quick answer.
Well Iv reed somewhere there is no difference between 1gig and 2gig for 1920x1080 resolution. So is that one true?
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post #4 of 12
Not technically correct, but in essence yeah. Crysis warhead can eat up more than 1GB when everything's maxed as well as games like Oblivion with texture mods installed. However by and large you will be more than fine with 1GB at 1080.
    
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post #5 of 12
yea thats true. you need more vram at a higher res.
    
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post #6 of 12
you probably wont see any different in fps comparing 1gb vs 2gb of vram at 1080p.
post #7 of 12
Thread Starter 
Hmm, but as Senator said, good 650W will handle 2x 5850, what about quality 550w, I guess it would be too hard right? It would overload
Sandy love
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Sandy love
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post #8 of 12
Nah i think you will be fine.
    
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post #9 of 12
Thread Starter 
I think I'll get 650-750W Power Supply. Any recommendation?

What about http://www.jonnyguru.com/modules.php...Story&reid=216
Edited by Shame486 - 6/14/11 at 12:39pm
Sandy love
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Sandy love
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post #10 of 12
Quote:
Originally Posted by Shame486 View Post
Hmm, but as Senator said, good 650W will handle 2x 5850, what about quality 550w, I guess it would be too hard right? It would overload
Nah man I edited that post already. I'm constantly having to remember that the 5XXX series is not the 69XX series. And to be honest I had a GTX 465 before this , so I missed the 5XXX series from AMD/ATI. I edited the post as it appears the recommended spec is 600 for two so a solid 550w will probably be alright!


Quote:
Originally Posted by Shame486 View Post
I think I'll get 650-750W Power Supply. Any recommendation?

What about http://www.jonnyguru.com/modules.php...Story&reid=216
That XFX would serve you in good stead. Although I don't think it's modular if memory serves. Anything from Antec, Corsair, Silverstone, XFX and others will serve you well!
Edited by Senator - 6/14/11 at 12:41pm
    
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[INTEL] i7 930, 4.4ghz @ 1.27V [Asus] Rampage III Extreme [Sapphire] 2X 6950's Flashed to 6970's @950/1425 [G.SKILL] Ripjaws X Series 12GB DDR3 @ 2133 
Hard DriveOptical DriveOSMonitor
[Crucial] 2X C300's in Raid0 & [Samsung] 2X 1TB F3 [Hewlett-Packard] DVD-RW [Microsoft] Windows 7 64-bit [Asus] 3X 23" LCD 
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