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__________________ Lenovo Thinkpad T60
Intel Core 2 Duo T7200 @ 2.00 Ghz
2 GB DDR-2 memory
ATI Mobility Radeon x1400
60 GB 7200 rpm Hard Drive
Windows Vista Business SP1 32 Bit
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That's the memory bus that's 64-bit, which doesn't affect anything but the card itself.
Video cards can have 128-bit, 256-bit, 320-bit, 384-bit, or 512-bit memory buses.
But that is only the bus between the video card's GPU, and its memory. It doesn't affect anything else.
No, having a 64 bit/ 128bit/ 256bit etc. video card is not really effected by the amount of bits a processor can handle at once. Although having a 64 bit processor would probably yield better performance - it and the video card are different.
__________________ Lenovo Thinkpad T60
Intel Core 2 Duo T7200 @ 2.00 Ghz
2 GB DDR-2 memory
ATI Mobility Radeon x1400
60 GB 7200 rpm Hard Drive
Windows Vista Business SP1 32 Bit