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
1621
66
3,612.6
1,493.5
NA
1622
57
4,373.3
1,898.6
NA
1623
61
4,521.7
1,864.6
NA
1624
72
4,241.0
1,938.7
NA
1625
53
4,396.3
2,014.6
NA
1626
64
4,651.3
2,256.8
NA
1627
54
3,689.9
1,481.9
NA
1628
112
2,843.5
2,216.5
NA
1629
110
2,702.3
1,646.3
NA
1630
90
3,435.0
2,517.2
NA
1631
93
2,778.7
1,944.4
NA
1632
149
2,459.8
2,146.9
NA
1633
58
4,500.7
2,258.9
NA
1634
50
5,217.9
2,417.4
NA
1635
53
5,434.2
2,518.3
NA
1636
84
3,059.2
2,059.3
NA
1637
79
3,022.1
2,154.7
NA
1638
111
2,685.9
2,014.5
NA
1639
72
3,579.5
1,329.0
NA
1640
94
2,649.8
2,062.2
NA
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