Does mixing Cas2 and Cas3 PC133 SDRAM matter?

[NucleusWDS]

Does mixing Cas2 and Cas3 PC133 SDRAM matter?

I have 1x 128 Mb PC133(Cas2) and 2x 64Mb PC133(Cas3)
Will it ran at the same speed ?
Or will I have to remove Cas3 ram to gain performance?

 

[jonnyGURU]

If you have CAS3 and CAS2 i the same machine, the only atency you will be able to get is the slowest, which is 3.

PCs always run at the slowest common denomonator. For example; if you combine PC100 and PC133, the machine will run at PC100.

 

[3615buck]

You mean at PC100 ???

 

[Doctorweir]

Depends on the MoBo...
Some VIA Chipsets are able to set different timings for each bank (Perhaps only the old SSocket7 Chipsets?). Dunno if the new Athlon-chipsets also can do...
In that case place the faster ram in the lowest banks, 'cos they are accessed most.

 

[jonnyGURU]

Thanks 3615buck. Too early in the morning.

 

[Davegod75]

not really unless your fsb gets too high. if you not overclocking the fsb too high, you might be able to run then both at cas 2-2-2 also.

 

[RagingGuardian]

The only difference I find is that when overclocking the slower memory will be the limit of your overclock.

 

[AMB]

I could run my Crucial CAS 3 at CAS 2 OK, may work on your system depending on the quality, if it doesn't, just change it back

 

[Quickfingerz]

You'd be running at the speed of the slowest RAM in your machine.

 

[Viper GTS]

You'll be running at whatever speed you set the FSB for. Whether or not it will be stable is another question.

I had three sticks of generic PC100 that all ran great at 112 MHz CS2, & a 128 MB PC133 that wouldn't do 133 CAS2. Now I have Mosel Vitalic Rev.2, & it runs great at 138 CAS2.

Viper GTS