Originally Posted by Quintanamore
The card does say how much wattage you need but another site said the 4650 took 55 watts and my last card that came with the machine to 40, so I dont think theres enough of a difference to matter. And in one of the comments a guy said it works on his 250 watt machine but I guess it depends on your computer because I do have a quad core processor which is taking a lot of power.
From what I can see your Q6600 is around 105wTDP. I'd expect it to use around 125w @ load.
The maximum a PCIe slot can provide is 75w.
The rest of the components are negligible. Add another 100w to be safe I suppose.
That's 300w. MAX. And there's no way that 4650 is going to suck 75w up out of that PCIe for extended periods of time.
You'll be fine. It will work, like I said before. You won't have any problems.