Intel's 2nd Generation Core processor family announced - Intel Core i7-2600K, i5-2500K and Core i3-2100

Intel  finally unleashing the details of its new Core i3, i5, and i7 processors, and considering there are 29 new CPUs in total as well as new integrated graphics options 

•  Core i7-2600K will power gate three of its four cores and turbo the fourth core as high as 3.8GHz.
• quad-core desktop Sandy Bridge die clocks in at 995 million transistors.
• DX10 graphics core
• 

 Here is the CPU performance sheet , Sandy Bridges win over AMD's Thuban & Deneb , due to its quad core processor design.

CPU Specification Comparison
CPU	Manufacturing Process	Cores	Transistor Count	Die Size
AMD Thuban 6C	45nm	6	904M	346mm2
AMD Deneb 4C	45nm	4	758M	258mm2
Intel Gulftown 6C	32nm	6	1.17B	240mm2
Intel Nehalem/Bloomfield 4C	45nm	4	731M	263mm2
Intel Sandy Bridge 4C	32nm	4	995M	216mm2
Intel Lynnfield 4C	45nm	4	774M	296mm2
Intel Clarkdale 2C	32nm	2	384M	81mm2
Intel Sandy Bridge 2C (GT1)	32nm	2	504M	131mm2
Intel Sandy Bridge 2C (GT2)	32nm	2	624M	149mm2

Final Words:

In terms of absolute CPU performance, Sandy Bridge doesn't actually move things forward and  HD Graphics 2000 is not as impressive.Sandy Bridge is easily a no brainer. Unless you already have a high-end Core i7, this is what you'll want to upgrade to.

Thanks,

Ram