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
721
70
2,928.8
1,286.6
NA
722
72
2,492.0
1,090.7
NA
723
53
4,068.8
1,740.1
NA
724
59
3,711.1
1,758.2
NA
725
57
3,461.5
1,619.8
NA
726
48
4,756.8
2,183.9
NA
727
55
3,944.5
1,686.2
NA
728
63
3,291.7
1,650.1
NA
729
53
4,153.1
1,851.0
NA
730
50
4,691.2
2,036.2
NA
731
55
4,421.7
1,791.6
NA
732
62
3,585.4
1,785.9
NA
733
58
3,234.1
1,822.7
NA
734
51
3,424.6
1,710.6
NA
735
48
4,647.6
1,763.7
NA
736
48
4,965.9
2,099.1
NA
737
52
4,438.2
1,883.8
NA
738
48
4,275.7
2,010.1
NA
739
97
2,619.5
1,544.3
NA
740
107
2,609.3
1,783.7
NA
Hynix Semiconductor (Hyundai Electronics) HYMP512S64BP8-Y5 1GB