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
321
51
4,246.9
1,839.1
NA
322
87
2,266.2
1,327.5
NA
323
62
3,227.2
1,448.7
NA
324
53
4,373.3
2,274.2
$34.05 USD (2021-05-31)
325
47
4,938.6
2,189.9
NA
326
54
5,170.9
2,604.6
NA
327
48
6,238.2
2,972.2
NA
328
61
3,528.3
3,310.7
NA
329
47
5,867.1
2,654.5
NA
330
49
5,239.0
2,420.8
NA
331
51
5,126.9
2,598.1
$46.27 USD (2021-01-31)
332
59
4,785.8
2,865.0
NA
333
51
4,607.3
2,296.6
NA
334
48
5,267.4
2,348.2
NA
335
52
4,807.9
2,183.9
NA
336
37
6,608.3
2,378.1
NA
337
52
5,074.8
2,267.9
NA
338
43
5,545.1
2,476.3
NA
339
50
4,535.0
2,136.7
NA
340
58
4,741.8
2,596.3
$30.99 USD (2016-06-29)
Corsair VSA2GSDS667C4 2GB 
COS Memory AG extreMEmory 512MB 
Crucial Technology 53627xxxx68x35xxxx 2GB