Difference between revisions of "random access memory/types"
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| DDR3-1600 || 800 MHz || 12,800 MB/s || PC3-12800 | | DDR3-1600 || 800 MHz || 12,800 MB/s || PC3-12800 | ||
|} | |} | ||
| − | For DDR RAM, the real clock rate is always half the rated transfer speed. | + | For DDR RAM, the real clock rate is always half the rated transfer speed. The module speed is in bytes/second. |
==Sources== | ==Sources== | ||
* '''2009-08-07''' [https://hardwaresecrets.com/everything-you-need-to-know-about-ddr-ddr2-and-ddr3-memories/ Everything You Need To Know About DDR, DDR2 and DDR3 Memories] | * '''2009-08-07''' [https://hardwaresecrets.com/everything-you-need-to-know-about-ddr-ddr2-and-ddr3-memories/ Everything You Need To Know About DDR, DDR2 and DDR3 Memories] | ||
Revision as of 17:26, 28 June 2021
Terms
- SDRAM = "Synchronous Dynamic Random Access Memory", meaning that they use a clock signal to synchronize things
- DDR = "Double Data Rate", meaning that they transfer two data chunks per clock cycle
| Chip Tech/Speed |
Real Clock | MTRR | Module Tech/Speed |
|---|---|---|---|
| DDR-200 | 100 MHz | 1,600 MB/s | PC-1600 |
| DDR-266 | 133 MHz | 2,133 MB/s | PC-2100 |
| DDR-333 | 166 MHz | 2,666 MB/s | PC-2700 |
| DDR-400 | 200 MHz | 3,200 MB/s | PC-3200 |
| DDR2-400 | 200 MHz | 3,200 MB/s | PC2-3200 |
| DDR2-533 | 266 MHz | 4,266 MB/s | PC2-4200 |
| DDR2-667 | 333 MHz | 5,333 MB/s | PC2-5300 |
| DDR2-800 | 400 MHz | 6,400 MB/s | PC2-6400 |
| DDR2-1066 | 533 MHz | 8,533 MB/s | PC2-8500 |
| DDR3-800 | 400 MHz | 6,400 MB/s | PC3-6400 |
| DDR3-1066 | 533 MHz | 8,500 MB/s | PC3-8500 |
| DDR3-1333 | 666 MHz | 10,666 MB/s | PC3-10600 |
| DDR3-1600 | 800 MHz | 12,800 MB/s | PC3-12800 |
For DDR RAM, the real clock rate is always half the rated transfer speed. The module speed is in bytes/second.