New Intel Slide presentations have been leaked which detail the upcoming Sandy Bridge-E Processors. The slides have detailed the performance estimates of Sandy Bridge-E top offering "Core i7-3960X Extreme Edition" against the LGA1366 top CPU " Core i7-990X Extreme Edition".

We previously detailed here the clock speeds of i7-3960X which features Six Cores/12 Threads, a base clock of 3.30Ghz which can Turbo upto 3.90Ghz, 15MB L3 Cache and Hyper Threading. Both CPU's were pitted against each other through a series of benchmarks which includeCinebench 11.5, POV-Ray 3.7, 3DMark 11 physics, Pro-Show Gold 4.5,SPECint_rate base2006, SPECfp_rate base2006, ans SiSoft SANDRA 2011B multimedia and memory bandwidth.

The chart shows that the Core i7 3960 was about 40-50% faster on average than the 990X. Memory Bandwidth is alsonoticeablyhigher due to Quad Channel DDR3 interface while the new AVX instruction set and hyper threading helped alot in gaining a better score for media encoding.

Also it has been detailed that the Sandy Bridge-E lineup will include two Unlocked Models - Core i7 3960X and Core i7 3930K while the i7 3820 would feature a locked multiplier which makes overclocking limited. Do check out the slides below: