Item |
DDR |
DDR2 |
DDR3 |
Clock |
100 to 200 MHz |
200 to 400 MHz |
400 to 933 MHz |
Data rate |
200 to 400Mb/s |
400 to 800Mb/s |
800 to 1,866Mb/s |
Voltage |
2.5V ± 0.2V |
1.8V ± 0.1V |
1.5V (1.425V-1.575V) |
1.35V (1.28V-1.45V) |
|||
Interface |
SSTL2 |
SSTL18 |
SSTL15 |
Package |
66-ball TSOP2 |
60-ball BGA for x4/x8 |
78-ball BGA for x4/x8 |
60-ball BGA |
84-ball BGA for x16 |
96-ball BGA for x16 |
|
Burst length |
2, 4, 8 |
4, 8 |
BC4, BL = 8 |
(2 bits prefetch) |
(4 bits prefetch) |
(8 bits prefetch) |
|
Number of banks |
4 banks |
512Mb: 4 banks |
1Gb/2Gb/4Gb/8Gb: |
1Gb: 8 banks |
8 banks |
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Reset |
No |
No |
Yes |
ODT |
No |
Yes |
Yes |
Module type |
184pin R-DIMM 184pin U-DIMM 200pin SO-DIMM |
240pin R-DIMM 240pin U-DIMM 200pin SO-DIMM |
240pin R-DIMM 240pin ECC-DIMM 240pin U-DIMM 204pin SO-DIMM |
Density |
1/2GB |
1/2/4GB |
1/2/4/8/16GB |