There are no Geforce 6600 with a PCI-e x1.
only x16 does exist. so don't worry
also a Geforce 6600 with 512 MB doesn't exist
but if you experience poor frame rate,
press Ctrl-Alt-Delete
and check your CPU without playing SHIII.
it should be around 5%, if you don't run any big progs.
when it is, close those programs.
also you could try to downtune your videosettings.
|