Template:mpu Core i7-820QM is a 64-bit x86 quad-core mobile performance microprocessor introduced by Intel late 2009. The processor has a base frequency of 1.73 GHz with a turbo frequency of 3.06 GHz and a TDP of 45 W. This MPU is based on the Clarksfield core (Nehalem microarchitecutre) and is manufactured on Intel's 45 nm process.

Cache

Main article: Nehalem § Cache

[Edit/Modify Cache Info]

Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 256 KiB 262,144 B 0.25 MiB L1I$ 128 KiB 131,072 B 0.125 MiB 4x32 KiB 4-way set associative write-back L1D$ 128 KiB 131,072 B 0.125 MiB 4x32 KiB 8-way set associative write-back L2$ 1 MiB 1,024 KiB 1,048,576 B 9.765625e-4 GiB     4x256 KiB 8-way set associative write-back L3$ 8 MiB 8,192 KiB 8,388,608 B 0.00781 GiB     4x2 MiB 16-way set associative write-back

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR3-1333 Supports ECC No Controllers 1 Channels 2 Max Bandwidth 19.87 GiB/s 20,346.88 MiB/s 21.335 GB/s 21,335.25 MB/s 0.0194 TiB/s 0.0213 TB/s Bandwidth Single 9.93 GiB/s Double 19.87 GiB/s Physical Address (PAE) 36 bit

Expansions

[Edit/Modify Expansions Info]

	Expansion Options
	PCIe Revision 2.0 Max Lanes 16 Configs 1x16, 2x8