Characteristics of Different Memory Types

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  • Topic: CPU cache, Phenom II, Computer
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  • Published : October 3, 2011
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Characteristics of different memory types
Cache memory
Nehalem microarchitecture (Intel)
Core i3 models (2 cores)
64 KB L1 cache (32 KB data + 32 KB instructions) per core; 256 KB L2 cache per core; 3 MB (mobile computer models) or 4 MB (descktop models) shared L3 cache memory;

Core i5 models (2 i 4 cores)
64 KB L1 cache (32 KB data + 32 KB instructions) per core; 256 KB L2 cache per core; 3 MB, 4 MB, or 8 MB shared L3 cache memory;

Core i7 models (4 cores)
64 KB L1 cache (32 KB data + 32 KB instructions) per core; 256 KB L2 cache, по јадро; 4 MB, 6 MB, 8 MB, or 12 MB shared L3 cache memory;

AMD Phenom
128 KB L1 cache memory per core; 512 L2 cache memory per core; One L3 2 MB cache(4 MB or 6 MB on a Phenom II) shared by all cores; *The speed of L1 cache memory is synchronized with the speed of the processor clock **L2 cache memory most often works with 1/4, 1/2 or full speed in relation to the speed of the processor cores.

RAM memory
The size of RAM memory that is being installed today is mostly 3 or 4 GB with exceptions for those systems designed for special purposes. The speed of memory acces depends on the working frequency of the memory

DDR1

Standard Name

Cycle time (ns)

DDR-200 DDR-266 DDR-333 DDR-400

10 7,5 6 5

DDR2
Standard Name Cycle time (ns)

DDR2-400B DDR2-400C DDR2-533B DDR2-533C DDR2-667C DDR2-667D DDR2-800C DDR2-800D DDR2-800E DDR2-1066E DDR2-1066F

10 7,5 6

5

3,75

DDR3
Standard Name Cycle time (ns)

DDR3-800D DDR3-800E DDR3-1066E DDR3-1066F DDR3-1066G DDR3-1333F DDR3-1333G DDR3-1333H DDR3-1333J

10

7,5

6

DDR3-1600G DDR3-1600H DDR3-1600J DDR3-1600K DDR3-1866J DDR3-1866K DDR3-1866L DDR3-1866M DDR3-2133K DDR3-2133L DDR3-2133M DDR3-2133N

5

4,28

3,75

Non-volatile storage
Magnetic disks
Capacity: Since July 2010, the largest disk that can be bought is with 3TB of memory, but standard sizes vary from 120GB to 1TB Speed: Seek time for magnetic disks varies depending on their...
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