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Upgrading to CF

post #1 of 7
Thread Starter 
Right now I got a Sapphire 6950 Unlockes to 6970 speeds & shaders. Im thinking of buying another one to CF. Would a TX650 be enough for this or would the PSU require an upgrade too ?

Thanks
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post #2 of 7
650w should just about do it, just i'd probably upgrade to make sure that if you try to add anything else you won't start smelling smoke.
    
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post #3 of 7
You can check how much power you need with Phaedrus Calculator.

650W won't be enough if you want to overclock anything significantly.


Edited by OrangeBunnies - 11/1/11 at 4:55am
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[i7-3770K 4.5GHz @1.24V] [Asrock Z77 Extreme4] [unlocked Sapphire 6950 Toxic 940/1425 @ 1.175V] [2x8GB Kingston HyperX Black 1800MHz 10-10-10-2... 
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[Logitech X-540 5.1 Speaker] [Logitech S220 2.1 Speaker] [Bitfenix Recon Fan Controller] [TRENDnet TEW-684UB] 
CPUGraphicsRAMHard Drive
[AMD A6-3400M 2.35GHz @ 1.0875V] [AMD HD 6650M] [2x4GB Corsair Vengence 1333MHz 9-8-8-8 @ 1.5V] [500GB Seagate 5400rpm] 
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post #4 of 7
650W is fine, I have two unlocked 6950s running off a truepower new 650W.
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CPUMotherboardGraphicsRAM
Intel 2500k 4.7GHz  Asus P8P67 Pro(B3) 2 x Club3D 280X 3GB 16GB g.skill 1600MHz C9 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Pro 256GB 4 x 2TB Barracudas in RAID10 2 x WD Blue 1TB RAID0 2 x 3TB Seagate Barracuda 
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8 x 146GB HP 10k SAS - various RAID levels RAID Controller LSI 9260-8i 512MB LiteOn IHAS124 Noctua NH-D15 
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8.1 Enterprise Acer GD245HQ (120hz) LG W2420P LG IPS231P 
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post #5 of 7
Quote:
Originally Posted by OrangeBunnies View Post
You can check how much power you need with Phaedrus Calculator.

650W won't be enough if you want to overclock anything significantly.
Those calculators overestimate power usage. Personally I'm using a 4,5 GHz 2500K and OC'd unlocked 6950 CF with a Super Flower 650W PSU with no problems. Even with furmark or similar benchmark power usage goes only up to ~550W, while normal gaming never exceeds 450W.

So as long as the PSU has enough PCIe connectors and the 12V rails are decent, you're good to go. Just don't go buying a no name PSU, only use trusted and well reviewed PSUs.
Edited by Pantsu - 11/1/11 at 6:33am
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post #6 of 7
Thread Starter 
Thanks for the replies well right now I got a Corsair TX 650 W, so hopefully that will be enough. Oh and will any ohter 6950 brand or model work? I got the reference model by Sapphire but they are not in stock anywhere here so... There is however a good priced HIS Model "IceQ X" bundled with Dirt 3
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Rig
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CPUMotherboardGraphicsRAM
I5 2500K @ 4.4 Ghz MSI P67A-GD65 GTX 670 Windforce3X 8GB Ripjaws 
Hard DriveOptical DriveOSMonitor
2 TB Spinpoint F3 Samsung DVDRW Win 7 3x Asus VN247H 
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G15 Corsair TX 650 Fractal Design R3 Deathadder 
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post #7 of 7
Yeah any 6950 will do just fine.
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My Rig
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Kingston 96GB SSD  Caviar Green 1TB storage  Plextor PX-L890 SA 24x DVD-RW Noctua NH-D14 
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Windows 7 Professional 64 bit IPS Dell Ultrasharp U2412M 24" Logitech G110 Corsair AX1200  
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