Type of RAM | |
Front and back of a 2GB PC2-5300 DDR2 RAM module for desktop PCs (DIMM) | |
Developer | Samsung[1] JEDEC |
---|---|
Type | Synchronous dynamic random-access memory |
Generation | 2nd generation |
Release date | 2003 |
Standards |
|
Clock rate | 100–266 MHz |
Cycle time | 10–3.75 ns |
Bus clock rate | 200–533 MHz |
Transfer rate | 400–1066 MT/s |
Voltage | 1.8 V |
Predecessor | DDR SDRAM |
Successor | DDR3 SDRAM |
Name | Chip | Bus | Timings | ||||||
---|---|---|---|---|---|---|---|---|---|
Standard | Type | Module | Clock rate(MHz) | Cycle time (ns)[5] | Clock rate (MHz) | Transfer rate(MT/s) | Bandwidth(MB/s) | CL-TRCD-TRP[6][7] | CAS latency(ns) |
DDR2-400 | B | PC2-3200 | 100 | 10 | 200 | 400 | 3200 | 3-3-3 | 15 |
C | 4-4-4 | 20 | |||||||
DDR2-533 | B | PC2-4200* | 133 | 7.5 | 266 | 533 | 4266 | 3-3-3 | 11.25 |
C | 4-4-4 | 15 | |||||||
DDR2-667 | C | PC2-5300* | 166 | 6 | 333 | 667 | 5333 | 4-4-4 | 12 |
D | 5-5-5 | 15 | |||||||
DDR2-800 | C | PC2-6400 | 200 | 5 | 400 | 800 | 6400 | 4-4-4 | 10 |
D | 5-5-5 | 12.5 | |||||||
E | 6-6-6 | 15 | |||||||
DDR2-1066 | E | PC2-8500* | 266 | 3.75 | 533 | 1066 | 8533 | 6-6-6 | 11.25 |
F | 7-7-7 | 13.125 |
PC-5300 | PC-6400 | ||||
---|---|---|---|---|---|
5-5-5 | 4-4-4 | 6-6-6 | 5-5-5 | 4-4-4 | |
PC2-3200 4-4-4 | % | % | +33% | +60% | % |
PC2-3200 3-3-3 | % | % | = | +20% | % |
PC2-4200 4-4-4 | % | % | = | +21% | % |
PC2-4200 3-3-3 | % | % | −24% | −9% | % |
PC2-5300 5-5-5 | % | % | = | +21% | % |
PC2-5300 4-4-4 | % | % | −19% | −3% | % |
PC2-6400 6-6-6 | % | % | = | +20% | % |
PC2-6400 5-5-5 | % | % | −16% | = | % |
PC2-6400 4-4-4 | % | % | −33% | −20% | % |
PC2-8500 7-7-7 | % | % | −12% | +6% | % |
PC2-8500 6-6-6 | % | % | −25% | −9% | % |
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