well i have an issue concerning about the shader clock of my g92 GTS 512...it says in my desktop rivatune that it only reads 972mhz of shader clock effective...well isnt it suppose to be 1940mhz??you guys know anything about how can i fix this??am using P5ne sli motherboard...2g ram..2.4 dual core PentD...i need your help guys..else i send back the card for a replacement if i cant resolve it here..thanks for the help in advance    

You are not looking at it correctly.... 972 is the memory data rate (x2) = ~1940
The shader clock is linked by default the core clock. Stock speed of the shader clock should be 1625, and 650 core.