X-bit Labs claims the launch of AMD's first 45nm desktop processor, Deneb, has been delayed to January 8th, 2009. These chips will feature higher IPC and bigger cache and should offer more performance per clock than the current generation. The site also has some info about the clockspeeds and power consumption:
Advanced Micro Devices plans to announce its first desktop microprocessors produced using 45nm process technology on the 8th of January, 2009, the first day of Consumer Electronics Show. The code-named Deneb chips will not get truly high clock-speed boost, but will be able to offer substantially higher performance thanks to larger cache and architectural improvements.
The first desktop processors from AMD made using 45nm process technology will be AMD Phenom X4 chips clocked at 2.80GHz and 3.00GHz, sources familiar with AMD’s plans said. The new processors will support both DDR2 and DDR3 memory, but since the initial chips will be available in socket AM2+ form-factor, the chips will have to rely on dual-channel DDR2 PC2-8500 (1066MHz DDR2) memory.
Surprisingly, but the 45nm process technology will not allow AMD to reduce power consumption of its quad-core AMD Phenom X4 process considerably and the new chips are projected to have 125W thermal design power (TDP), inline with today’s higher-end Phenom X4 chips. Still, the new microprocessors will definitely have better performance-per-watt ratio compared to predecessors.