I got my 7900GT yesterday and i started overclocking it after a few hours from purchase, already have VF900Cu-Led installed and my core clock only reaches 515 at stock volts details are listed below and some more questions

Its at 55~56 on full load. here are my complete system specs

Athlon64 3700+
Asrock dual sata II
512MB 2x Twinmos DDR400
Inno3D 7900GT
X-fi Xtreme Music
1x 250B WD SATAII
1x 80GB Seagate IDE
1x LG Multi DVD writer
2x 80mm fan
3x 120mm fan
1x stock amd fan blowing directly at heatsinked hot IC's on the backside of the 7900GT
HEC 550Watts Dual 12v ( 12v1 = 18A 12v2 = 17A )

Nothing else is overclocked
PCIe is at 100Mhz

Should i bother volt modding my card, coz from what i see im getting low gains on stock volts and im not sure how much higher volts can help me or are there some cards that really suck at stock volts and shine with added volts?


As for my other question is there similar OSD program for nvidia which is similar to ATI Traytools ? ateast the FPS and GPU temps are shown that shoukd suffice.