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Potoroo
11-05-06, 11:48 PM
I upgraded my driver from 91.47 to 93.71 (uninstalled 91.47, used Driver
Cleaner Pro, rebooted, installed 93.71).

When I installed Coolbits 2.0 and switched to the Classic Control Panel it
misreported my memory clock as 2.1Ghz instead of 1.05Ghz (I have an XFX
factory overclocked 7800GT 256MB 450/1050).

I tried dropping the memory clock down to 1050 but the Test Changes failed,
so I ran the Detect Optimal Frequencies and it came back with 505/2190,
which if you halve the memory speed is about the same as the sort of
settings it would recommend under 91.47 (ie, 1100 to 1110).

Although this seems consistent with the memory clock being simply
misreported (I shudder to think how long my video RAM would last at
2.1Ghz!), I've disabled Coolbits and I was wondering if anyone else had this
problem. It means Nvidia have changed something for the first time that's
mucked up at least one part of Coolbits and I'm concerned about what else
that may imply.

InSuboRdiNaTioN
11-06-06, 12:16 AM
See the official thread for this driver release.
This change is listed in the release notes. The memory clock now reflects effective speed (DDR = x2).

rewt
11-06-06, 12:17 PM
The memory clock now reflects effective speed (DDR = x2).

I assure you, the effective speed of the memory on his 7800GT is not 2.1GHz...

DDR is Double Data Rate, not quadruple data rate. In other words, the control panel is reporting the effective speed doubled in many cases. It is incorrect.

it misreported my memory clock as 2.1Ghz instead of 1.05Ghz

I have the same issue with my 6600GT SLI (though the Release notes state it is a single card issue only - The release notes are incorrect too!)

nVidia broke coolbits in some of the latest drivers. You'll need to use another tool such as RivaTuner that can overclock using hardware instead of driver.

Welcome to nV News Potoroo! I hope I was able to help :)

OWA
11-06-06, 12:20 PM
Here's an explanation for what is going on:

http://www.nvnews.net/vbulletin/showpost.php?p=1052564&postcount=125