My parents have a PC with an A6-5200 and integrated graphics and 6GB of DDR3, my PC has an Athlon II X4 with a GTX 650 and 6GB of DDR3, but their performance in regular tasks is much faster than mine, but gaming is faster than me of course, we are both running Windows 8, is the Athlon II X4 not good for Windows 8? Would the performance be better in Windows 7?