[live4ever]

You have the G98 core. It should be good for most stuff except for certain horizontal resolutions.

"All third generation PureVideo hardware (G98, MCP77, MCP78, MCP79MX, MCP7A) cannot decode H.264 for the following horizontal resolutions: 769–784, 849–864, 929–944, 1009–1024, 1793–1808, 1873–1888, 1953–1968 and 2033–2048 pixel."

so standard 1920x1080p will be fine.

edit: just saw the above post - GT 520 is much better.