difference between 5:4 and 1:1...

O

ozziegn

The man behind the curtain...
Joined
Jan 13, 2001
Messages
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okay, I just upgraded my RAM and it looks like I'm gonna be able to run my previous 236FSB (5:4) on my new RAM but this time it looks like the RAM is handling it at 1:1.

so my question is, what kind of a difference is there supposed to be on an 800FSB P4 (2.8C) between 5:4 and 1:1 ratios?
 
Originally posted by ozziegn
okay, I just upgraded my RAM and it looks like I'm gonna be able to run my previous 236FSB (5:4) on my new RAM but this time it looks like the RAM is handling it at 1:1.

so my question is, what kind of a difference is there supposed to be on an 800FSB P4 (2.8C) between 5:4 and 1:1 ratios?
Click to expand...



probably higher memory bandwidth...im not too sure what that does performance wise...
 
for example, a few 3dmark shots with mildly oc'ed video.
cpu is 2.8c @ 3.5g / 250fsb at all times.

mem 1:1 2-2-2-6 22001
mem 5:4 2-2-2-6 21513
mem 1:1 2.5-4-4-8 21152
 
As long as you're running dual channel, I believe lower bandwidth and tight latency is a good idea. markku's numbers are surprising though... at the same timings, the 1:1 is slower than 5:4? That's not right....
 
Originally posted by KevC
As long as you're running dual channel, I believe lower bandwidth and tight latency is a good idea. markku's numbers are surprising though... at the same timings, the 1:1 is slower than 5:4? That's not right....
Click to expand...

There's no way that could be right, if timings are kept the same. If you're running at 2-2-2-6 at 400DDR and 500DDR, the 500DDR should always be the better performer. Correct me if I overlooked something in the article, but those scores just aren't right if timings are the same.
 
If u look closely enough, last and lowest score is with 2.5-4-4-8 timings :)

Originally posted by KevC
markku's numbers are surprising though... at the same timings, the 1:1 is slower than 5:4? That's not right....
Click to expand...
 
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