Is OpenCL the backbone of grand central? I have a 64 bit iMac with an ATI X1600 GPU which isn't going to be supported by Snow Leopard (OpenCL). Does any know if OpenCL is likely to be expanded to support this processor further down the line? Otherwise is there going to be any point in upgrading? Or was the several hundred(?) million transistors on my GPU not enough for the OpenCL programmers...