Should work with win 8 according to voters on microsoft site.
http://www.microsoft.com/en-us/windows/compatibility/CompatCenter/ProductDetailsViewer?Name=Sapphire%20Technology%20ATI%20Radeon%20X300%20SE%20PCIE%20DDR2%20128MB%20Graphics%20Card&vendor=Sapphire&ModelOrVersion=SAPRX300SEP128L&Type=Hardware&tempOsid=Windows+8
There has been no drivers released from AMD.