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
1801
46
4,433.3
1,974.7
NA
1802
72
2,527.9
1,481.0
NA
1803
56
4,042.8
2,131.8
$42.24 USD (2014-06-17)
1804
66
3,853.2
1,637.0
NA
1805
79
2,934.7
1,283.1
$10 USD (2019-04-20)
1807
62
3,611.3
1,910.9
$52.99 USD (2018-03-25)
1808
64
3,528.6
1,504.4
$29.99 USD (2013-02-16)
1809
60
4,162.7
2,109.3
$10.99 USD (2019-05-30)
1810
61
3,827.2
1,624.7
NA
1811
63
4,625.9
2,291.7
NA
1812
115
2,222.2
1,893.8
$86.49 USD (2017-04-04)
1813
77
3,484.5
1,530.5
NA
1814
64
4,820.7
2,623.3
$139.89 USD (2019-01-04)
1815
61
4,173.7
1,878.0
NA
1816
58
4,210.5
1,729.7
NA
1817
37
6,604.3
2,957.1
NA
1818
69
4,323.0
3,469.9
NA
1819
59
4,432.2
2,707.4
NA
1820
65
4,597.2
2,516.3
NA
Patriot Memory (PDP Systems) PSD21G53381 1GB