Low-end DX10 Radeons to have 64-bit memory bus?
Both AMD and Nvidia are expected to unveil mainstream DirectX 10-class graphics cards next quarter, but in both cases, we've heard rumors that the cards will be somewhat crippled on the memory front. Last week, word got out that Nvidia's upcoming mid-range GeForce 8600 parts would have a 128-bit memory bus, and now HKEPC reports that AMD's entry-level RV610-based graphics cards will have a 64-bit memory bus.
HKEPC goes on to say that the RV610 will be based on 65nm process technology. The chip will apparently support GDDR2, GDDR3, and GDDR4 memory, which could allow AMD (or its partners) to make up for the narrower memory bus with faster RAM. RV610 cards will also have support for PCI Express 2.0, CrossFire multi-GPU technology, and HDMI video output, the site claims. Meanwhile, RV610's chief competitor—Nvidia's G86, which will be dubbed GeForce 8500 GT, 8400 GS, and 8300 GS, according to Nvidia's drivers—will reportedly be built on 80nm process technology and feature a 128-bit memory bus.