Wrong core clock speed detected by Rivatuner?

[DahDee]

I just installed a BFG 5600 Ultra, and Rivatuner tells me the core clock speed is 235 (instead of 400) (correctly identifies mem speed as 800). It actually shows 235 over 58.5 for the core clock speed, and 800 over 171 for the mem speed, so maybe both settings are messed up, I'm just not sure. I uninstalled drivers, then used driver cleaner, then installed 52.16 drivers, and it says the same thing (same result previously with install of 45.23 drivers with this card). Would appreciate any help.

Edit: In "low level system tweaks," it shows core clock of 58.5 and memory clock of 171.0; in "system tweaks" (driver settings tab), it shows core clock of 235 over 58.5 and 800 over 171.0; I haven't used this utility a whole lot and am not sure what the heck is going on. I do know Rivatuner showed the correct settings (250/513) for the Ti4200 I just took out of this system.

Edit2: Was doing some reading over at Guru3D forums and somebody had a similar problem, was told that the settings showing up in Rivatuner or similar programs were for 2D performance and the 400/800 (or whatever applies to an involved card with a similar problem) are the 3D settings that kick in when needed. I followed the suggestion given there, to download coolbits and check the 3d settings, and did so: shows 235/800 for 2D and 400/800 for 3D. So I guess it's not a problem after all....right (I'm still not sure where those freaky 58.5/171 numbers came from)?

 

Does your card clock itself down in 2D? My 5900 runs at 300 core in 2D and 400 core in 3D.
This is normal for my card. This lets the fan spin more slowly in 2D apps to keep the noise down.

GM

 

[DahDee]

I *think* that's exactly what's going on, gorillaman, but thanks for the response. I'm running 3DMark2001SE as we speak just for comparison with the Ti4200 I took out. I think Coolbits cleared things up for me. I had it autodetect 3D overclock settings and it chose 434/869. We'll see what happens -- I'll update shortly.

 

[DahDee]

14,277 in 3DMark 2001SE w/ the new card (13585 was the high w/ the 4200) at 442/869 using 44.03 drivers. Hmmm, weird: uninstalled the 44.03 drivers, installed the 52.16 drivers, and dropped to 12,778. That's kind of yucky!