OK, so if the rumors are true, we'll see the Sandy Bridge E review up bright & early on Monday morning.
Here are my predictions for the 6 core chips:
1. At default clocks it'll beat the 990x pretty uniformly but not by a particularly impressive amount outside of RAM and AVX enabled benchmarks.
2. At default clocks you will see some reduction in power consumption, mostly in idle power, compared to the Gulftowns.
3. These chips will overclock quite nicely with good cooling, and after the overclocking is done then you'll start to see some worthwhile performance gains over the existing 6 core Gulftowns and regular Sandy Bridges.
4. The first revisions of the chip won't support PCIe 3.0 (remember PCIe is on the processor itself and there is no northbridge). Since there's no PCIe 3.0 hardware to test on and since there are a crapton of PCIe 2.0 lanes, this will not be a huge issue.
5. The 3930k that should cost ~$600 will be a much more exciting chip than the 3960x since it is cheaper and has a smaller L3 cache that will make overclocking easier.
6. These things will likely have statistically insignificant performance differences from the regular Sandy Bridge chips at games *until* you go to 2 or 3 way video cards where the extra PCIe bandwidth will start to help.
7. The relative lack of hype around this platform is justified. While it definitely has superior performance to its predecessors, the strength of the consumer Sandy Bridge and the Bulldozer disaster have blunted the hype. The LGA 2011 socket will get more interesting in the future when Intel comes out with the X89 (or whatever the successor to X79) that adds in the extra features we wanted in the first revision, and when future revisions of SB-E and IB-E roll out.
8. This is the most out on the limb guess: Since the consumer version of Haswell is apparently sticking with DDR3, Intel will make a Haswell-E that will fit in socket 2011. The high-end chips won't bother with the integrated VRMs used to squeeze power savings out in notebooks, so socket 2011 will still be OK for Haswell-E.
Those are my $0.02. Anybody have any other thoughts?