RAM Clock Speed

[Zeipher]

Should DDRRAM be underclocked to my FSB speed? Or will it work better at the higher DRR400 clock?

Sorry if this is in the wrong forum.

 

[boshuter]

Sorry if I get the wrong impression, but I don't think you have a good understanding of how it works. The speed your memory runs at is directly determined by the FSB speed you run. You can change the ratio of ram/fsb if your ram won't keep up with your fsb; but at 1:1 ratio your memory will run as fast as it's possible given your fsb speed. All this has nothing to do with the memory timings, which is another subject alltogether.

As an example: I'm running a p4 at 250fsb, my pc3500 ram won't run 1:1 at that speed (250X2=500mhz), so I run it at 5:4 which means my ram is running at 400mhz. I hope this is clear.

If my ram was capable of running at 600mhz (this is hypothetical) but I could only get 250fsb then no matter what, the fastest the ram could run at is 500mhz.

I hope this helps a little..... just do a lot of reading on this forum and it will all come together

 

[Zeipher]

Thanks, that helps me a lot.

It's nice to be welcomed this way. Better than many other forums I've gone to.

 

[boshuter]

Glad it helped....

Welcome to Anandtech.... this is a great place...