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
1941
96
2,971.3
2,559.4
NA
1942
81
3,240.7
2,153.2
NA
1943
96
2,666.6
1,959.1
NA
1944
70
3,104.6
2,216.9
NA
1945
128
2,579.9
2,077.3
NA
1946
95
3,037.1
1,945.8
NA
1947
93
3,417.2
1,811.5
NA
1948
61
2,990.3
2,167.5
NA
1949
92
3,031.8
1,961.0
NA
1950
129
2,340.1
1,647.4
NA
1951
105
3,266.4
2,533.8
NA
1952
88
2,963.5
2,113.3
NA
1953
63
3,182.0
2,483.4
NA
1954
115
2,782.7
1,957.9
NA
1955
82
3,065.8
2,091.3
NA
1956
55
2,533.8
2,517.2
NA
1957
67
2,778.6
1,420.8
NA
1958
92
3,268.1
2,969.2
NA
1959
88
2,940.4
2,133.9
NA
1960
74
3,053.4
2,077.7
NA
Qimonda 72T256220HP3SB 2GB