think my gpu is missing memory speed :S

[Badas]

i have an XFX GTX 285 GPU

i just looked at the cost from where i got it from and noticed it says my memory clock should be at 2484Mhz... if i look in evga precision is says my memmory clock is at 1331 and the max i can make it is 2000 (which i dairn't set incase it crashes)

am i getting things mixed up? if so how do i find out the true memory clock speed of my gpu??

also whilst i am here, whats the best clocks i should be able to get out of this card?

thanks

 

[Badas]

ok thats cool well here are my current overclocks:

core clock - 709
shader clock - 1587
memmory clock - 1331
fan speed - 80%

i use furmark adn in game testing to find any artifacts or decrease in performance,

how would i go about increasing the overclock greater?
should it be increments of 5 and leave the shader clock alone?
will i gain much more performance if i continue?

thanks