In my Bios there is an option for either UC or USWC in video cache Mode

[Brutuskend]

USWC stands for uncacheable speculative write combining.

It says is can greatly improve display speed by caching the display data.

It also says NOT to use this setting if your card doesn't support this feature.

Does anyone know if a ATI radeon 8500 supports USWC?

 

[Brutuskend]

After doing a bit oif googling it seems all newer video cards can run in this mode.

Have it set now in the Bios, and it's running great!