The second of the PC's is a bit of an oddball spec. Why have a 64 bit OS, but only 2gb RAM????
The 9800GT in the AMD PC will outperform the 9500GT in the Intel PC, but then the Intel PC has 4GB RAM and .....
Really you need a combination of the two:
Take the Intel processor & RAM and combine with the graphics card and operating system from the AMD PC.