Radeon HD 2900 with 1GB of memory due next month?
As we've seen, AMD's new Radeon HD 2900 XT graphics card isn't a particularly impressive performer when compared to Nvidia's GeForce 8800-series offerings. However, if a report by TweakTown is to be believed, AMD plans to take another shot at Nvidia with a version of the Radeon HD 2900 XT featuring double the memory and presumably higher memory bandwidth. The site says a Radeon HD 2900 XT with 1GB of GDDR4 memory will be available next month. This card will be 9" (23cm) long, just like the existing model that's outfitted with 512MB of GDDR3 memory. However, it will have the advantage of sporting the highest memory capacity of any single, shipping consumer graphics card to date—indeed, even Nvidia's $800 GeForce 8800 Ultra comes with "only" 768MB of GDDR3 memory.
A move to GDDR4 RAM may also work in the Radeon's favor when it comes to memory bandwidth, although the existing card is hardly lacking on that front. Thanks to its 512-bit memory bus, the current 2900 XT squeezes a whopping 105.6GB/s of memory bandwidth out of relatively pedestrian 825MHz GDDR3 memory. But with GDDR4 RAM clocked at, say, 1000MHz, the Radeon could see its bandwidth extended to a total of 128GB/s.