welner :
"U" = unbuffered non ECC --- "E"= unbuffered ECC (not reg) "
Are you saying that both are non ECC but U is registered ...
Or that both of these are basicly the same ... Which is better for a home PC ...
Buffered and registered are the same thing
E stands for ECC (error correcting)
R stands for Registered .
U is not ECC and not registered
to use ECC you will need a Chipset (motherboard) and CPU that supports it .
for most home use you dont need ECC memory , unless you are using it for scientific calculations/programs that needs ECC ...
you can read here :
https://en.wikipedia.org/wiki/ECC_memory