Results of an Intel Ivy Bridge 2GHz quad-core engineering sample were published at the Coolaler forums. The CPU-Z 1.58 screenshot reveals this chip runs at a voltage of 1.056V, it has 6MB L3 and a 65W TDP rating.
CPU-z reports the processor at 2407.1MHz in turbo mode on a Gigabyte Z68X-UD7 motherboard with BIOS F9 and also on a Gigabyte Z68X-UD3H-B3 motherboard with BIOS F5e. Coolaler also shows the systems dual channel memory running at 2133MHz with impressive CL6 timings! The AIDA64 benchmark results on the memory was 16GB/s read and 13GB/s write. This is great news for all the Intel LGA1155 motherboard owners as this confirms that Ivy Bridge 22nm CPUs will work on existing motherboards. This is also the first time that we have seen a B3 revision Ivy Bridge processor, so we must be getting closer to the launch.