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
1961
115
2,662.7
1,728.3
NA
1962
93
2,753.8
1,667.6
NA
1963
66
2,668.3
1,730.7
NA
1964
104
2,640.7
1,940.1
NA
1965
109
2,683.4
2,554.2
NA
1966
113
3,281.1
2,815.7
NA
1967
83
2,563.8
1,923.9
NA
1968
111
2,839.2
2,217.3
NA
1969
47
4,666.9
2,146.5
NA
1970
65
2,360.5
1,879.3
$45 USD (2019-01-07)
1971
51
4,674.1
2,160.6
NA
1972
54
4,353.6
1,777.3
NA
1973
75
1,950.3
1,692.6
NA
1974
57
4,799.8
2,364.2
NA
1975
46
5,334.3
2,366.7
NA
1976
56
4,408.0
1,891.3
NA
1977
49
4,923.1
2,151.6
NA
1978
77
3,456.0
2,036.5
NA
1979
51
4,302.6
1,935.9
NA
1980
50
4,663.1
2,058.2
NA
Qimonda 72T512420EFD3SC 4GB 
Ramaxel Technology RML1320EF48D8W-800 2GB