![]() Should something ever go wrong with the card, one of the first questions tech support will ask is your PSU wattage. NOTE: The recommendation is part warranty and part liability. Or you can do away with the math hassle and guesses by getting better PSU. Unless you tell us you system specs, we can't even guess. The deal is not everyone knows what their system uses, they don't own a powermeter to tell how much space is left. The problem is we don't know what componenets because nVidia doesn't tell us. Typically, the box recomendations are specifically known as "Total System" which means the video card plus some random/basic components. ![]() This older review shows the typical power consumption or 7600GT at the frequencies shown is 67W. For example, a PCIe 2.0 card will function 1.1 in 1.1 slot, while a 1.1 card won't perform any better in a 2.0 slot than compared to a 1.1 slot. The power and bandwidth is limited by the slot specs. A 7600GT has no external connections, so it will never draw more than the 75W it can from the slot. The 6-pin is still 75W for either standard. The difference is in the 8-pin external connector, 1.0/1.1 is 100W while 2.0 draws 150W. PCIe 1.0/1.1/2.0 all have the limitation of 75W (6.5A at 12v) in the slot. The PCI-SIG organization is behind the spec, they would have more detail info than I am summarizing.
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