DDR2 内存模块
与DDR相比，DDR2将数据传输速率提高了2倍。它在PCB上有240个引脚（每侧120个）。消费为1.8V。时钟频率从400 MHz到800 MHz不等。 DDR2存储器的最大频率为1000 MHz。
№
Memory name
Latency (ns)
Read (MB/s)
Write (MB/s)
Price
801
55
3,342.8
1,618.5
NA
802
64
2,599.5
1,092.3
NA
804
46
3,529.4
1,985.1
NA
805
55
3,296.3
1,656.7
NA
806
59
2,507.5
1,558.0
NA
807
51
3,594.8
1,485.7
NA
808
42
4,565.5
2,001.9
NA
809
52
3,539.2
1,725.1
NA
810
52
3,517.4
1,569.3
NA
811
113
3,022.4
1,565.8
NA
812
57
3,293.7
1,300.2
NA
813
43
3,922.8
2,052.6
NA
814
50
4,052.4
1,803.6
NA
815
56
2,913.8
1,788.2
NA
816
50
3,260.1
1,653.8
NA
817
62
2,882.9
1,598.0
NA
818
65
2,869.3
1,398.6
NA
819
54
3,487.7
2,205.0
NA
820
47
3,627.2
1,746.7
NA
Infineon (Siemens) 64T128020HU3.7A 1GB