What type of DDR for ASUS A7V266-E mobo?

[WarLocke]

I've decided to go with Crucial for my A7V266-E mobo. I'm upgrading from 256mb to 512 mb. I'm confused one one point, however. Which of these do I want--->

DDR PC2100 ? CL=2.5 ? Unbuffered ? Non-parity ? 2.5V ? 32Meg x 64

or

DDR PC2100 ? CL=2.5 ? Unbuffered ? ECC ? 2.5V ? 32Meg x 72


Can someone please explain the difference between 32meg x 72 vs 32meg x 64 I couldn't find the difference in their FAQs page.

Thanks!

 

[Bozo Galora]

ECC is error correcting RAM for servers
your board does not support it
the extra 8bits (72-64) is for an additional chip that does the correcting

 

[WarLocke]

Thanks for your help!