ok I've installed 64bit system,
it was 20-100% faster
GTKPerf result with 100 rounds was 6.5s !
But it wasn't stable
I've installed Gutsy and there was about 500 updates , after updating and rebooting Ubuntu was completely unstable !
I was unable to use graphic mode nor console ! , ( console was broken , and graphic mode was freezing so I couldnt do anything
I will try to install Hardy 64bit I hope it will be stable