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Help my friend build a computer

post #1 of 11
Thread Starter 
Hey overclock.net,

So my friend wants my help choosing some parts for him for his new computer. Apparently, he has a super rich cousin who gave him 4 5850's :O. He wants me to ask you guys what motherboard to get, and what PSU to get. Obviously, the motherboard needs to have 4 pci-e slots. His budget is preferably 150 for each, 200 max. He wants good to decent parts, they don't need to be super efficient or anything, but not crappy either.

Thanks guys!
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post #2 of 11
Quote:
Originally Posted by MusicalPulse View Post
Hey overclock.net,

So my friend wants my help choosing some parts for him for his new computer. Apparently, he has a super rich cousin who gave him 4 5850's :O. He wants me to ask you guys what motherboard to get, and what PSU to get. Obviously, the motherboard needs to have 4 pci-e slots. His budget is preferably 150 for each, 200 max. He wants good to decent parts, they don't need to be super efficient or anything, but not crappy either.

Thanks guys!
you would have to have an xl-atx mobo like an 890fx-ud7 to have a shot of getting 4 cards in one mobo...and you would have terrible airflow to the cards. also, scaling diminishes a lot at even tri-fire vs. crossfire. my advice would be to sell all four cards, and get two really good cards in crossfire.
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Phor the Win
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post #3 of 11
Best option is to sell the 5850s for cash, or 2 of the 5850s.
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post #4 of 11
Quote:
Originally Posted by Jcyle View Post
Best option is to sell the 5850s for cash, or 2 of the 5850s.
yeah, thats another good option. sell 2 of the cards to help pay for the rest of the rig and keep 2 for crossfire. 2 5850's in cf is still a pretty good setup
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Phor the Win
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Built 2 Phold
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Phort Awesome
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WD CaviarBlack 1TB LITE-ON iHAS424-98 Corsair H70 Win. 7 Home x64 
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32" Sony Trinitron TV Corsair 1000HX LIAN LI PC-B25FWB 
CPUMotherboardGraphicsRAM
AMD Phenom II x4 965 MSI MS-7548 Aspen MSI N460GTX Hawk Talon Attack (895/1790/2000) Crucial DDR2 800 (4x1 GB) 
Hard DriveOptical DriveCoolingOS
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post #5 of 11
Thread Starter 
I don't think he wants to sell
..hmm well how much wattage would you need to run 4 5850s?
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White
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post #6 of 11
id sell 2 of the gpu's and get this
ASUS Crosshair IV Formula AM3 AMD 890FX
http://www.newegg.com/Product/Produc...82E16813131644

ob is $170
http://www.newegg.com/Product/Produc...2E16813131644r


looks like a 5850 recomends 600w for 2 in crossfire, id say a 1000w psu should be fine for 4
Edited by ffejrxx - 5/20/11 at 9:25pm
post #7 of 11
If he only wants you to use it and not sell it, then might as well just take 2 of them and buy a lesser expensive PSU like the TX650w and be done with it.
Alalalala
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Alalalala
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post #8 of 11
Thread Starter 
He says hes thinking about the TX950 because it can support 3 5850s, and the 4th one if he uses peripheral converters. Is this psu reliable?
White
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OCZ Vertex 2 90GB, 7200 1TB WD Caviar Black Asus Black 24x DVD Burner Windows 7 Professional 64-bit Hannspree 25" HDTV, 2x Dell U2312HM 
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White
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Hard DriveOptical DriveOSMonitor
OCZ Vertex 2 90GB, 7200 1TB WD Caviar Black Asus Black 24x DVD Burner Windows 7 Professional 64-bit Hannspree 25" HDTV, 2x Dell U2312HM 
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post #9 of 11
Most of the Corsair PSU range are solid.
post #10 of 11
You're going to be seriously CPU bottle necked with 4 5850's.. unless you plan to run a 980x or other similiarly overpriced CPU.

If i were him i'd only be running two of the 5850's, and then a good quad core.. like a phenom II 955 and make sure you overclock the CPU to insure you get the most of of those GPU's.

You're really just eating up power for no gain with 4 x Crossfire.
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Lan Master 2.0
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