The Radeon X2800 XTX will work at 750MHz core clock and the GDDR4 memory is clocked at 2200MHz. This is how the R600 XTX will be known from now on. As always, these clocks are close to final but ATI can still change them till the launch date sometime in March. The top card has 1024MB of 512-bit GDDR4 memory working at 2200MHz. This card also has 128 shaders just as many as NVIDIA's G80 chip. It is made on a 80 nanometre marchitecture and it will sell for $600. We already wrote about the dual-GPU, called Radeon X2800 XTX2. There will be a 512MB version of the Radeon X2800 XTX card which will have the same clocks but will sell for $550. - The Inquirer

ATI's Radeon X2800 XTX will work at 750/2200MHz

The R600 XT becomes the Radeon X2800 XT and this card will work with GDDR3 memory. The clock speed won't be that dramatic. The card works at 600MHz core and 1800MHz memory. The memory is crippled to 256-bits and the card comes with 512MB of these precious clever circuits. It will sell for $500. The R600 XL becomes the Radeon X2800 XL with the same clocks, 512MB of GDDR3 memory but only 96 shaders. This one will sell for $400. The last one is the Radeon X2800 GTO clocked at 600MHz core and 1400MHz GDDR3 memory. The card has 256MB of 256-bit memory and again 96 shader units.

Cards based on this version of the R600 chip will cost $300 and are positioned to take on NVIDIA's GeForce 8800 GTS 320MB. All together the list climbed to six cards and some partners might do the water cooling one. At press time I cannot confirm the specifications of the Radeon X2600 and Radeon X2300 series cards but it looks real enough.