Hi all,
While I was attempting to overclock my 9800GTX to equal some out of the box OC video cards, I noticed that the default memory clock shown in RivaTuner for the 9800GTX is 1100mhz.
Since I can't find any company that distribute the 9800GTX and gives 1100mhz as a specification. The only thing I can read in any of the specifications given is 2200mhz.
Can someone explain why RivaTuner say the default is 1100mhz and video card distributors says double that amount? How does it work this calculation?
I know that just before I changed video card I was testing some stuff with RivaTuner, and it showed different features for my HD2900XT, for example RivaTuner showed a feature called "Show as DDR", how come this is not available with the 9800GTX?
2200MHz is the effective speed. Rivatuner is reporting the "non-effective" speeds, and this is normally how we enthusiasts express our clock rates, although it doesn't matter as of now.
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In case you didn't follow that. 1100Mhz is the true (base) clock rate and the RAM is GDDR3. Key letters are DDR or double data rate. So 1100Mhz x 2 = 2200Mhz effective. If you look in the "graphics subsystem diagnostics report", in Riva, it will show you the base memory clock and effective speeds.
Message edited by Zorg on 05-03-2008 at 08:01:08 PM
Ok tanks guys for confirming, I doubted a bit, but I guess it must be since the HD2900XT showed the DDR right there and then while OCing. It's just that with the 9800GTX this feature did not show up in RivaTuner and made me wonder.
So until now this 9800GTX can take the beating at 1200mhz, that's insane!
