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Difference between revisions of "intel/core i7/i7-2840qm"
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(→‎Cache)
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This specific model was only sold to a number of selected OEMs, featuring a 100 MHz speed bump over previous model.
 
This specific model was only sold to a number of selected OEMs, featuring a 100 MHz speed bump over previous model.
 
== Cache ==
 
== Cache ==
 +
{{main|intel/microarchitectures/sandy_bridge#Memory_Hierarchy|l1=Sandy Bridge § Cache}}
 +
{{cache size
 +
|l1 cache=256 KiB
 +
|l1i cache=128 KiB
 +
|l1i break=4x32 KiB
 +
|l1i desc=8-way set associative
 +
|l1d cache=128 KiB
 +
|l1d break=4x32 KiB
 +
|l1d desc=8-way set associative
 +
|l1d policy=write-back
 +
|l2 cache=1 MiB
 +
|l2 break=4x256 KiB
 +
|l2 desc=8-way set associative
 +
|l2 policy=write-back
 +
|l3 cache=8 MiB
 +
|l3 break=4x2 MiB
 +
|l3 desc=16-way set associative
 +
|l3 policy=write-back
 +
}}
  
 
== Memory controller ==
 
== Memory controller ==

Revision as of 19:30, 2 September 2017

Template:mpu

This specific model was only sold to a number of selected OEMs, featuring a 100 MHz speed bump over previous model.

Cache

Main article: Sandy Bridge § Cache

[Edit/Modify Cache Info]

hierarchy icon.svg
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 KiB8-way set associative 
L1D$128 KiB
131,072 B
0.125 MiB
4x32 KiB8-way set associativewrite-back
L2$1 MiB
1,024 KiB
1,048,576 B
9.765625e-4 GiB
  4x256 KiB8-way set associativewrite-back
L3$8 MiB
8,192 KiB
8,388,608 B
0.00781 GiB
  4x2 MiB16-way set associativewrite-back

Memory controller

Expansions

Graphics

Features

[Edit/Modify Supported Features]

Cog-icon-grey.svg
Supported x86 Extensions & Processor Features
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Facts about "Core i7-2840QM - Intel"
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l1$ size256 KiB (262,144 B, 0.25 MiB) +
l1d$ description8-way set associative +
l1d$ size128 KiB (131,072 B, 0.125 MiB) +
l1i$ description8-way set associative +
l1i$ size128 KiB (131,072 B, 0.125 MiB) +
l2$ description8-way set associative +
l2$ size1 MiB (1,024 KiB, 1,048,576 B, 9.765625e-4 GiB) +
l3$ description16-way set associative +
l3$ size8 MiB (8,192 KiB, 8,388,608 B, 0.00781 GiB) +