Memory of 9800 256Pro and 9800XT...

[Looney]

The 9800 256Pro is DDR-II correct? And the 9800XT is just regular DDR? If so, then isn't the memory on the 256Pro be superior to the 9800XT?

I ask this, because at the Driverheaven review of the XT, and the OC section, they did:

In the following benchmarks the XT is clocked at 412/365. The Pro is clocked at 412/375 (it is intentionally clocked 10mhz higher than the XT to make any latency difference between the two cards have negligible performance hit ? XT=ddr Pro=ddr2).

Shouldn't it be the other way around? Shouldn't the XT be clocked higher to make up the latency differences?

EDIT: bah, forgot to link the article:

Linky

 

[stardust]

discrepancy! i'd like to see an answer to this, im guessing DDR2 has looser timings

 

[Pete]

DDR2 is a tiny bit slower per clock, part of the reason why it can scale to higher speeds than DDR. So other than cost, there's really nothing else that makes one better than the other at current speeds (which you can still attain with cheaper DDR). So ATi clocked their DDR2 256MB 9800P a tad higher than their DDR 128MB 9800P to mask any potential latencies. It makes sense that Driverheaven would do the same. I think the only reason ATi used DDR2 on the 256MB 9800P was because they bought a bunch "cheap" off of Samsung after nV stopped ordering it for the 5800U.