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
521
53
3,389.6
1,394.3
NA
522
51
3,535.9
1,487.9
NA
523
55
2,806.1
1,280.6
NA
524
53
3,411.1
1,586.1
NA
525
65
2,549.1
1,067.6
NA
527
110
2,659.0
2,030.8
NA
528
111
2,737.2
2,091.0
NA
529
86
3,002.7
2,343.3
$42.14 USD (2019-01-05)
531
79
2,601.0
2,102.6
$16.99 USD (2017-04-04)
532
60
2,788.7
1,265.7
NA
533
65
2,273.6
1,138.9
NA
534
52
4,226.4
1,479.2
$14.99 USD (2017-04-04)
535
53
4,292.6
2,118.9
$28.99 USD (2016-01-02)
536
49
4,320.2
1,786.4
$29.99 USD (2013-03-18)
537
51
4,870.0
2,051.9
NA
538
67
3,174.7
1,241.9
NA
539
54
3,993.8
1,720.0
$33.98 USD (2019-06-03)
540
82
3,166.8
1,364.4
$27.87 USD (2022-04-01)
Elpida EBE51RD8ABFA-4A-E 512MB 
Exel CM72FB2048-667 2GB 
Flasys CL4-4-4DDR2-533 512MB 
G Skill Intl F2-4200PHU1-1GBLA 1GB