Looking at PC100

I am looking at Kingston PC100 RAM (if you know anyone else that still makes it and you want to recommend, chime in) and they designate some modules "CL2" and others "CL3". Since I know from experience not all PC100 chips will work in my computer please explain the difference.

http://www.ebuyer.com/customer/prod...2hvd19wcm9kdWN0X292ZXJ2aWV3&product_uid=55808

thers some kingston pc100 ram cas2

CL2 CL3 these represent the memory timings you want to have the lower as the access time is less. as for them not working some modules simply dont work with each other its best to get identicle modules to save hassle.

Go to www.Crucial.com. Run their memory configurator, and they will give you a lifetime warranty on the memory and compatibility.

Crucial doesn't make a 512 Mbyte chip. I bought Kingston, they offer a 30 day money back guarantee and the lifetime warrantee. 1X512 <<$$ 2X256. This will max out my computer.

I found out CLx refers to latency, the lower the better.

The 512 MByte PC100 CL2 chip from Kingston did not work in my computer (by itself). I am sure this is my computer's fault. It has the problem that it has a 133 FSB but only a 100 chipset. It is a miracle it works at all. There are 2 more things I can try. 1)Although Dell's spec sheet says my computer can use 512 chips they weren't available on the market when I bought my computer. This makes me think that maybe my computer cannot in fact use 512 chips. Also, the original RAM chip that came with my computer was CL3 (the newer one is of unknown specification). Is it possible for a cheap *** computer to work with CL3 RAM but not with CL2? CL3 and CL2 chips cost the same. Maybe I don't have any choice with my miserable computer.

Exactly what model number is your system?
Also, I doubt your system supports 512mb modules.

Dell L667r. I have successfully purchased new RAM for it before, but it is some offbrand junk that is no longer even in the RAM business.

This'll work
http://www.memorystock.com/orderitem.asp?IT=160ms-029
The keywords here for you are "Low Density" meaning the ICs are 16x8
On a 256mb stick you'll see chips on both sides of the stick.
The high density/single bank (chips on 1 side) wont function on your rig.