FSB:DRAM Ratio

March 17, 2006 at 14:14:40
Specs: WinXP, 3.6Ghz/512

Hi, quick question FSB/DRAM Ratio, 3:4 better or 1:1? Thanks

See More: FSB:DRAM Ratio

Report •


#1
March 17, 2006 at 14:46:32

1:1 is almost always best

Report •

#2
March 17, 2006 at 14:49:40

I know that 1:1 is better than 5:4 but why isn't 3:4 better than 1:1? Can you please explain a little bit about it, thanks

Report •

#3
March 17, 2006 at 16:39:38

For best performance, the CPU & RAM should run at the same frequency...in other words, 1:1 ratio. Any other ratio setting will create a bottleneck in either the RAM or the CPU.

Assuming a CPU Frequency of 200MHz & PC3200 RAM:

1:1 = 200mhz/200MHz

5:4 = 200MHz/160MHz - to get the RAM speed up to 200MHz, you'd have to raise the CPU freq to 250MHz. RAM is the bottleneck.

3:4 = 200MHz/266MHz - to get the RAM speed down to 200MHz, you'd have to lower the CPU freq to 150MHz. CPU is the bottleneck.


Report •

Related Solutions


Ask Question