Much more performance with cas2?

[Feskar]

I wonder if running memory at cas2 is noticable, or is it only when running benchmarks you notice it?

 

[Duvie]

While it was just a small percentage points better in my testing of a divx encoding it did mean about 7-8 minutes which adds up....It may be more inn gaming...ask thugsrook as i rarely game

1.6@2.64ghz w/ 440mhz cas 2.5,3,3,6 = 1.6@2.72ghz w/ 340mhz cas 2,2,3,6

1.6@2.736ghz w/ 342mhz ddr cas 2.5,3,3,6 didn't beat or equal the time of the 1.6@2.64ghz....

I estimated I would have need 2.752-2.768 to equal it...so about 2-3 precent with divx encoding...noticeable only cause there was a clock otherwise maybe not noticeable or neglible in most things...

 

[canadianpsycho]

Duvie, I'm a bit confused by your reply. Looking at your comparison

1.6@2.64ghz w/ 440mhz cas 2.5,3,3,6 = 1.6@2.72ghz w/ 340mhz cas 2,2,3,6

It basically states that bandwidth is king over CAS setting with P4s (which I always figured anyways). So you're better off running a higher MHz/higher CAs setting then a lower MHz/lower CAS setting. Granted, if your memory can't hit higher freq, then you're better off with the lower CAS setting...

Correct me if I'm wrong?

 

[Duvie]

I am showing in that app that bandwdith was kingg as it took me to oc the cpu 80 more mhz to equals it ability....

You are right once I got past 440fzb I could no longer reliably run the memroy even at lowest cas settings.....

I am giving a bandwidth versus cpu comparison but the second line shows that at same lower speed 340mhz ddr cas2.5 to cas 2 made a slight difference...2-3percent....saw this as about the same in mp3 encoding and autocadd2000 rendering...

 

[rogue1979]

Every system runs a little different, but this is what I found personally works for my 6 computers.

High fsb speeds even with relaxed or compromised memory timings tend to give better benchmarks.

Lower speeds with strictest timings tend to be faster in real world applications.

So I like to run the highest fsb or memory speeds possible while still maintaining the fastest timings.

 

[sechs]

What if you're not changing the FSB? What about changing the DRAM settings at the same memory speed?

 

[canadianpsycho]

Originally posted by: sechs
What if you're not changing the FSB? What about changing the DRAM settings at the same memory speed?

Well then definitely agressive memory timings will be better.

 

[THUGSROOK]

cas settings will depend on WHAT APPS YOU ARE USING.

every app will like faster cas settings~
not every app will like more bandwidth~
having both would be best~

see my sig?
if i drop the cas settings to their lamest settings ~ ill need to run 168fsb to match my current "gaming" scores.
divx encoding (etc) would rather have more cpu mhz & faster cas settings ~ bandwidth isnt as important to it.

<it will depend on your app>