Question on old RAM

[sim085]

I have some old 30 pin SIMM 1MB sticks. I was wondering; how can I know their speed?

On eBay I saw that 256 KB sticks are marked as 120ns. I would like to buy some new sticks. However I would like to know what is the max speed possible and the speed of my sticks.

Also; does it make a big difference?

[sim085]

Thanks for the replies. I believe my question is answered. However since some asked for pictures I took the sticks out and took some. The first two end with J70 ... that means 70 ns?

So 40ns is better than 120ns?

if that is a yes then for something like this:
http://amiga.resource.cx/exp/impact500mk2

Where it says "accepts 1 or 4 MB 120 ns SIMMs"

What happens if you put a stick of 40ns? it runs at 120ns?

From the answers I know this most probably does not make much of a difference but still curious

[sim085]

I attached better photos. The last digits of each are; 70, 12 (I suppose means 120), 7 (I suppose means 70) and 50.

can you get more of a macro shot I cant read them.

I did a search on ebay; couldn't find any 50ns ... that said, it would be useless to buy 50ns for a GVP HD8+ given the limit of 120ns. Is this right?