hi guys Iam thinking of installing the Nvidia 8500GT PCI-E 512mb but not to sure as to how my system will cope . The PSU Should be ok it is the chip Iam not to sure about because its only a AMD Athron 4200x2 dual core Processor any help would be great

Are you thinking of installing or buying and then installing?

You can check any system requirements from whoever you buy it off or check Nvidia.

As far as you processor concerns I have a Nvidia 8600GT 1GB and my processor is AMD Athon 3800 and mine runs fine.

Most likely your motherboard will support it as long as it has a PCI-e slot and adequate power.

For what purpose are you buying that graphics card?