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
181
47
5,053.3
2,429.4
NA
182
55
4,534.7
2,444.7
NA
183
62
5,092.8
2,613.8
NA
185
60
4,204.9
1,985.2
NA
186
49
4,745.8
1,863.5
NA
187
52
4,487.3
1,906.7
NA
188
59
4,219.6
2,227.4
NA
189
62
2,829.2
1,232.7
NA
190
61
3,484.6
1,603.3
NA
191
53
4,559.5
2,009.5
NA
192
52
4,111.3
1,636.5
NA
193
67
4,093.1
2,415.3
NA
194
64
3,768.3
2,188.1
NA
195
50
4,713.1
1,954.8
NA
196
45
4,331.0
1,002.4
NA
197
63
3,447.6
1,510.3
NA
198
53
4,280.3
1,812.8
NA
199
59
3,602.0
1,487.2
NA
200
68
3,183.3
1,597.5
NA
Apacer Technology 78.A1GA0.404 2GB