[ale] RAM upgrade question

[jknapka at kneuro.net (JK)]

James P. Kinney III wrote:

>On Sun, 2006-06-25 at 16:39 -0500, Courtney Thomas wrote:
>  
>
>>I need to increase the RAM capacity from 128 to 512MB in a portable.
>>
>>I've located some SODIMMs, whatever that means,
>>
Small Outline Dual Inline Memory Module, IIRC. "SO"
refers to the form factor.

>> that appear to match the 
>>docs on my machine's RAM requirement, except that said modules are CL3, 
>>not CL2.
>>
>>Of what significance is this ?
>>    
>>
>
>If you are replacing CL2 with CL3, it should work OK as long as the rest
>of the parameters match up. Don't mix the two types or else the RAM will
>not work. The CLx is a timing designator. I can't recall whether it is
>refresh rate or write rate. The main thing is that all the RAM must be
>the same type.
>
And you may need to adjust your BIOS for the lower CL (cache
latency) setting. Some BIOSes require CL to be set manually.
Some allow different CL settings per bank, IIRC.

-- JK