DDR2 Memory Modules
DDR2 increases the data transfer rate by a factor of 2 as compared to DDR. It has 240 pins on PCB (120 on each side)
№
Memory name
Latency (ns)
Read (MB/s)
Write (MB/s)
Price
2501
52
4,131.7
2,159.1
NA
2502
72
1,750.6
1,002.9
NA
2503
68
3,806.0
1,655.5
NA
2504
54
4,500.4
1,849.7
NA
2505
68
2,650.9
2,142.6
NA
2506
45
4,492.5
2,013.7
NA
2507
61
5,400.0
3,745.7
NA
2508
45
4,661.1
1,956.6
NA
2509
48
5,599.5
2,493.4
NA
2510
46
5,805.9
2,706.3
NA
2511
53
3,901.3
1,646.3
NA
2512
65
2,231.9
1,004.1
NA
2513
50
4,178.9
1,862.1
NA
2514
65
3,580.1
2,063.1
NA
2516
60
3,380.7
1,288.7
NA
2517
51
4,499.8
1,743.5
NA
2518
53
3,726.4
1,590.1
NA
2519
66
4,803.0
2,391.8
NA
2520
72
3,819.6
2,137.5
NA
Transcend Information TS256MLQ72V6U 2GB 
TwinMOS 8D7E5KA5-TATP 1GB