ATI X1900XT 256Mb vs X1900XT 512Mb
 

When 512MB cards first came along (with the GeForce 7800 GTX 512), we ran some performance tests to try and ascertain the real world performance difference between these cards and ones with 256MB of RAM. We came up empty handed at the time. Today we are able to show that memory sizes above 256MB are actually starting to matter. With ATI's launch of the new X1900 XT 256MB, we have a direct comparison between two cards which are almost identical aside from the amount of memory on board. To be completely fair, X1900 XT 256MB cards built by ATI will also have full HDCP support, keys and all, but the major difference remains RAM.