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SLI Compatable?

post #1 of 3
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Are their certain psu's that arn't SLI compatable? Cause when I went to connect mine to the motherboard the book called for a 20 pin, but my psu has a 16 pin.
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Athlon 3200+ ABIT AN8 SLI Windows XP Prof. Raidmax 450W 
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post #2 of 3
Yes, there are some PSU's that arn't SLi compatable.. The 20 pin the motherboard is calling for is a basic one, your PSU should have that... (check again) And also there might be a 4 pin one that connects with the 16 to make a 20 pin. (thats probably not the case)
    
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CPUMotherboardGraphicsRAM
T2500 Core Duo Dell Laptop Quadro 1500m flashed--> 7900GTX 2x1GB G.Skill DDR2-800 
Hard DriveOptical DriveOSMonitor
200GB SATA 5400RPM 8x DVD±RW Burner XP Home SP2 17" LCD (1920x1200) + 20.1" Samsung Widescreen 
KeyboardPowerCaseMouse
GE Keyboard 9 Cell Battery E1705 Frame Razer Diamondback 
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Icemat 
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post #3 of 3
SLI compatible means two things. one, the PSU should have 2 power connectors for the video cards so you don't have to use the adapters. it also means that it has been tested on an SLI system to make sure it can give the cards enough power.

other "non" SLI PSU's may work just fine though, like the OCZ Powerstream 520W. i know a few people who run SLI 7800GTX's on that PSU with no problems. but yes, there are PSU's that cannot handle two video cards. every normal ATX PSU should hook everything up just fine, even if you have to use adapters, but again, it might not be able to supply enough power to keep the system stable
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