Before the mod max 400 on the core before artifacts and/or freezes, after the mod 436 on the core before freezes [ no artifacts ].
The freezes comes from FW.

This mod should be used in conjunction with the famous Bios V-mod [ 1.4V or 1.5V ] for best result.

The circuit isn't perfect, but it is functional.

*Warning, the mod is not fully tested yet

http://service.futuremark.com/compare?2k3=3588506