I mentioned on the previous page that NVIDIA's "reference" clocks for the new GTX 260-216 were the same as the original GTX 260-192 GPU but since NVIDIA isn't really releasing a reference design to us, it's is really completely up to the AIC to decide the various frequencies.  BFG is releasing not just one but THREE models based on the GTX 260 MAXCORE designation:

• GeForce GTX 260 OC MAXCORE
• Core: 590 MHz
• Shader: 1296 MHz
• Memory: 999 MHz
• GeForce GTX 260 OC2 MAXCORE
• Core: 630 MHz
• Shader: 1350 MHz
• Memory: 1063 MHz
• GeForce GTX 260 OCX MAXCORE
• Core: 655 MHz
• Shader: 1404 MHz
• Memory: 1125 MHz

That is an impressive range of clock speeds - expect the prices to be about $20 higher per step from OC to OC2 to OCX cards.  Just for reference, the clock rates of the GTX 280 card are 615 MHz core, 1350 MHz shader and 1107 MHz memory; that means there may be some areas where the GTX 260 OCX MAXCORE could outperform the GTX 280 if an application is clock rate bound even though it has 24 fewer shaders.