Gpu Speed question

[Akram]

Im running a bfg 7800 gtx oc and i was wondering if i had anything to worry about.
i recently installed the latest ntunes performance platform for my card and shows that i have a
gpu (core) 3d speed of 275 MHZ and the gpu memory is running at 648 MHZ while the specs of my card say that its memory is clocked at 1300 MHZ and the Ramdac is 400MHZ.

Sorry for the possible noobish question but im trying to learn thanks for any insight on this topic.

 

[Laminator]

Ignore the RAMDAC clock. Your memory clock is right on the money; it's double-data-rate (GDDR3) memory so you double its actual speed to get the effective speed. 650MHz x 2 = 1300MHz. Your core clock, on the other hand, is too low. Stock 7800GTX 256MB's have a core clock of 430MHz and since you have an OC card, it will be slightly higher. I'm not sure why it would say you have a core clock of 275MHz; some cards have "2D" or "low-power" clocks that they revert to when not rendering 3D images but I've never seen a downward jump like this.

I recommend using ATITool (search in Google) to check your GPU temperature and clocks (it will tell you if you have 2D clocks and what they are) and to set your clock speeds (it allows you to overclock your card, amongst other things).

 

[Akram]

hmmm thanks i think you have answered my whole question. in games the core jumps up to 460. thanks aton

 

[XFXSupport]

Laminator was correct, that video card will "slow" down when in 2d mode. So when monitoring the speeds with no 3d applications running you will see a slower speed then if you monitor it while a 3d applications is open.