How can I tell if memory is PC100 or PC133?

[Riprorin]

Here's the info on it:

128 MB SDR DIMM H

16ZHS WH 3403104

0110 3-2

MT 48LC16M8A2

TG -75E

 

[amdskip]

Can't really. Try it at PC133 speeds, it will either work or it won't.

 

[Jeff7]

There might be a way. Get Sisoft Sandra, install it, run it, and double-click the Mainboard Information icon. If Sandra can communicate properly with your motherboard, it should be able to tell you what the memory ID's itself as. It'll be under the category "Memory Module(s)"; you might have to scroll a little, and it could give several settings according to the CAS latency setting. My PC2100 memory says CL2.5 up to 133MHz, CL2 up to 100.