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Description Spare part number
2nd Generation Intel® Core™ processors, (support Intel Turbo Boost Technology) (includes replacement thermal
material):
i7-2620M, 2.7 GHz (turbo up to 3.4 GHz) dual-core processor, 4 MB L3 cache, 4 threads, 35W 657844-001
i7-2630QM 2.0 GHz (turbo up to 2.9 GHz) quad-core processor, 6 MB L3 cache, 8 threads, 45W 657849-001
i7-2720QM, 2.2 GHz (turbo up to 3.3 GHz) quad-core processor, 6 MB L3 cache, 8 threads, 45W 657846-001
i7-2820QM, 2.3 GHz (turbo up to 3.4 GHz) quad-core processor, 8 MB L3 cache, 8 threads, 45W 657848-001
i7-2920XM, 2.5 GHz (turbo up to 3.5 GHz) quad-core extreme processor, 8 MB L3 cache, 8
threads, 55W
657850-001
2nd Generation Intel® Core™ i5 processors, (support Intel Turbo Boost Technology) (includes
replacement thermal material):
i5-2520M, 2.5 GHz (turbo up to 3.2 GHz) dual-core processor, 3 MB L3 cache, 4 threads, 35W 657845-001
i5-2540M, 2.6 GHz (turbo up to 3.3 GHz) dual-core processor, 3 MB L3 cache, 4 threads, 35W 657847-001
Before removing the processor, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 45)
5. Remove the service access cover (see
Service access cover on page 46).
6. Remove the optical drive (see
Optical drive on page 58) or upgrade bay hard drive (see Upgrade
bay hard drive on page 60).
7. Remove the keyboard (see
Keyboard on page 65).
8. Remove the top cover (see
Top cover on page 81).
9. Remove the fan/graphics board heat sink assembly (see
Fan/graphics board heat sink assembly
on page 68).
10. Remove the processor heat sink (see
Processor heat sink on page 73).
Remove the processor:
1. Use a flat-bladed screwdriver to turn the processor locking screw (1) one-half turn
counterclockwise, until you hear a click.
76 Chapter 4 Removal and replacement procedures