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as we knew Intel  just launched three processors in a new family called Nehalem, one of which is an Extreme Edition version.

Let’s see what differences between them.

Features of Intel Core i7

• Hyper-Threading
• Turbo Boost
• 8MB Intel Smart Cache
• Integrated Memory Controller with support for 3 channels of DDR3-1066MHz memory
• Intel QuickPath interconnect to Intel X58 Express Chipset
• Intel X58 Express Chipset
• PCI Express 2.0 discrete graphics flexibility for multiple graphics card configurations
• Intel HD Audio Support

• 6 SATA ports at 1.5Gbps and 3Gbps speeds and 12 USB 2.0 ports with 2 independent EHCI controller

Intel Core i7-965 Extreme Edition

• 3.2GHz Clock Speed
• 6.4GT/second QPI speed
• 8MB L3 cache
• DDR3-1066
• 3 channel support

• TDP 130W
• Overspeed Protection Removed - Yes
• 45 nanometer(nm) process
• Nehalem core
• Selling Price $999 (RM 3,610)

Intel Core i7-940

• 2.93GHz Clock Speed
• 4.8GT/second QPI speed
• 8MB L3 cache
• DDR3-1066
• 3 channel support
• TDP 130W
• Overspeed Protection Removed - No
• 45 nanometer process
• Nehalem core
• Selling Price $562 (RM 2,030)

Intel Core i7-920

• 2.66GHz Clock Speed
• 4.8GT/second QPI speed
• 8MB L3 cache

• DDR3-1066
• 3 channel support
• TDP 130W
• Overspeed Protection Removed - No
• 45 nanometer process
• Nehalem core
• Selling Price $284 (RM 1,026)

The main differences between the three CPUs are: Overspeed Protection, the transfer rates of the Quick Path Interface and the clock speed, as otherwise the three CPUs are identical.

The following informations are credited to TechSpot

Benchmarks: SiSoftware Sandra

Find out more on about information of Intel Core i7 processor , visit here .