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
241
49
4,295.9
2,053.5
NA
242
113
1,296.5
1,012.1
NA
243
47
2,777.3
1,364.9
NA
244
57
3,905.4
1,601.6
NA
245
67
5,749.1
4,286.2
NA
247
82
1,654.3
555.9
NA
251
54
3,872.9
1,862.1
NA
253
75
3,890.6
2,751.0
NA
255
46
3,688.8
1,889.6
NA
256
47
4,546.3
2,085.2
NA
257
55
3,896.5
1,578.8
NA
258
95
2,654.8
2,239.1
NA
259
63
1,932.4
589.6
NA