Originally Posted by Criswell
My best explanation is, Does RAM have to be DDR2? No it does not since the newer specifications of RAM don't require you to have DDR2. Sorry if I came off like an arse.
However, there are advantages to DDR2.... low power consumption and faster clock speeds. Yes, latency is worse but are getting better as yields increase and production lines are tweaked.
As for GDDR3, it basically is the same reason to upgrade to DDR2. faster and lower power consumption. Mootsfox, I believe the GDDR4 is actually designed to run at 2.8GHz. The X1950XTX uses the first generation stuff so clock speeds may be limited due to the new production line The G80 is able to use GDDR4 by simply changing out the memory and BIOS flash. However, I believe the main reason it was not used was due to Samsung's production issues. They were producing less than expected. Rather than wait and risk it, nVidia went with GDDR3 which is more than adequate.