Originally Posted by psp_crazy1
orly? My x1900xtx has 512mb ddr3 mem, and its 256 bit, and it lags a little when i play doom 3/ quake 4 on ultra. it uses OVER 512 mb of mem
According to websites I read Doom 3 and Quake 4 uses 512MB when running at Ultra (not above 512MB). It can aslo run on 256MB video card but it will store the textures in the system ram instead of video memory.
Just look at my signature. I have geforce 6600 256MB and it lags a little when I play doom3 on ultra, So I think X1900xtx should not lack when running on Ultra. Maybe you have a driver problem or maybe you are playing on very high resolution and high AA.
The main reason why HD2900XT 1GB performed better than 512MB is because it has higher memory speeds not because it has more memory. HD2900XT 1GB has 2000MHz GDDR4, not 1650MHz GDDR3 like the 512MB version
and i hate how people are already comparing it to the 8800gtx, when it's over 6 months old ( i think) and the xt 1gig JUST CAME OUT!!! the 8800gtx had all that time to get its drivers configured, and now you're bagging on the xt. man...
You are asking me why I'm comparing HD2900XT 1GB with 8800GTX ?!!!!
I comparing them because both have the same price range. 8800GTX is only $20-30 more.
The performance difference between 8800GTX and HD2900XT 1GB is not small. I don't think that any driver improvement would help HD2900XT.
And for your information nvidia is really working hard on their driver, currently their new drivers Forceware Beta 158.45 offers better performance than the official drivers.
However, I don't have time to argue with you or with anyone. The website that I posted have done the benchmark test with the current drivers, and 8800GTX performed better. I'm not bagging on XT. I was stating a fact.