Quad core but not impressed.

[Kissell13]

INTEL CORE 2 QUAD Q6600 8MB CACHE 1066 MHZ TOWER COMPUTER WITH NVIDIA 8500GT 1024MB DDR2 GRAPHICS CARD.
500GB 16MB CACHE SATA HARD DRIVE
WITH 20X DUAL LAYER LIGHTSCRIBE DVDRW + 2GB DDR 2 MEMORY .

OS is VIsta 64.

2gb ram and 8500gt are most likely your problems.