[H] How to figure out RAM

[Anthony Q. Martin]

I've got 2 GB of RAM here.  I know the 4 modules are Apacer 512 MB UNB 
PC2700 CL2.5, so that's unbuffered.  But is it ECC or not?  The chips are 
Infineon HYb25D256809BT-6.

I've been googling around for the better part of an hour with nothing much 
yet.   Anyone know a good source for IDing memory sticks?  I remember 
finding such a site once but I cannot remember it now.