X1900xtx OC problem

[UAExDEVIL]

I overcloacked my x1900 xtx from 500 Mhz core to 580 and the memory from 600 Mhz to 693
But when i checked my score with 3D Mark i got 2103 for the VGA but before the OC it was 2104

what may cause this problem ??????

 

[UAExDEVIL]

Help PLZ