I know "Can I mix ram speeds?" is a common question, but mine is more towards mixing the same speed of ram but with different CAS values. I have 2 sticks of 512 MB Corsair PC2700 CAS2 currently installed on my Abit BH-7 motherboard and it works fine. I recently bought a cheap stick of 512 MB Crucial PC2700 ram but forgot about the CAS... Frankly i dont even know what CAS is, just that a lower number is better. The Crucial ram i bought is CAS 2.5.
Anyways, my computer would re-boot by itself at random times with all 3 sticks installed, so I went into the BIOS and changed my CAS speed to 2.5 instead of 2. It no longer re-boots (so far) but when i go to my computer's properties it says I only have 1.00 GB installed, when I should have 1.5 GB installed. Is this just windows not displaying my total ram properly, or is only 1.0 GB of it working? When I restart my computer, it says i have 1.5 GB during bootup, so im inclinded to think it is just windows... but I'd like to know for sure, or if theres anything I am doing wrong.