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
1281
40
3,873.3
1,956.2
NA
1282
60
2,802.3
1,346.7
NA
1283
39
3,897.7
1,953.6
NA
1284
61
3,622.8
1,656.9
NA
1286
67
2,306.4
1,059.4
NA
1287
63
3,161.5
1,259.4
NA
1288
65
3,323.2
1,326.8
NA
1289
64
3,134.4
1,768.6
NA
1290
73
2,809.7
1,766.6
NA
1291
61
3,229.7
1,203.7
NA
1292
63
2,841.4
1,648.5
NA
1293
53
3,803.2
1,603.0
NA
1294
60
3,573.7
1,612.0
NA
1295
61
3,036.9
1,388.8
NA
1296
61
3,211.3
1,883.6
NA
1297
53
4,394.5
1,970.4
NA
1298
47
3,787.0
1,773.4
NA
1299
63
3,963.1
2,044.9
NA
1300
58
4,205.5
2,049.0
NA
Micron Technology 8HTF6464AY-53EB9 512MB