1. 新买了一个笔记本,说装的内存是DDR5 5600的,
但是HWInfo里看到,最高频率只有2800MHz。
很奇怪,然后检索了一番,同过一英文网页大概明白了,
DDR (Double Data Rate),本来就是指双倍数据率的意思。
在一个周期里,可以传输两次数据 。
(在时钟脉冲的上升沿和下降沿都能传输数据,这样不需要提高时钟频率就能实现双倍的SDRAM提速)
所以,ddr 5600的内存条,实际运行频率最大就是2800MHz.
这里5600的单位,准确的说是MT/s而不是MHz。
关于这个,三星大厂也标示为4800Mhz,不专业或者故意而为之?
2.主板、接口本来不支持高频率内存,但是为了迷惑客户故意安装高频DRR。有无这种现象?
https://www.techsiting.com/mt-s-vs-mhz/#:~:text=DDR%20or%20Double%20Data%20Rate%20is%20a%20type,a%20base%20speed%20or%20frequency%20of%201333%20MHz.
Meaning of MT/s and MHz
Mega Transfers Per Second abbreviated MT/s is a measurement of bus and channel speed in millions of “effective” cycles per second. While, Megahertz Per Second, abbreviated MHz means one million cycles per second and is used to measure the transmission speed of electronic devices. By their definitions, it is easy to see how MT/s and MHz could be confused.
但是HWInfo里看到,最高频率只有2800MHz。
很奇怪,然后检索了一番,同过一英文网页大概明白了,
DDR (Double Data Rate),本来就是指双倍数据率的意思。
在一个周期里,可以传输两次数据 。
(在时钟脉冲的上升沿和下降沿都能传输数据,这样不需要提高时钟频率就能实现双倍的SDRAM提速)
所以,ddr 5600的内存条,实际运行频率最大就是2800MHz.
这里5600的单位,准确的说是MT/s而不是MHz。
关于这个,三星大厂也标示为4800Mhz,不专业或者故意而为之?
2.主板、接口本来不支持高频率内存,但是为了迷惑客户故意安装高频DRR。有无这种现象?
https://www.techsiting.com/mt-s-vs-mhz/#:~:text=DDR%20or%20Double%20Data%20Rate%20is%20a%20type,a%20base%20speed%20or%20frequency%20of%201333%20MHz.
Meaning of MT/s and MHz
Mega Transfers Per Second abbreviated MT/s is a measurement of bus and channel speed in millions of “effective” cycles per second. While, Megahertz Per Second, abbreviated MHz means one million cycles per second and is used to measure the transmission speed of electronic devices. By their definitions, it is easy to see how MT/s and MHz could be confused.