Originally Posted by DJ-CHRIS
ECC is error checking and protects against some gamma rays coming from outer space.
Im 100% dead serious.
Yup. It tends to slow down the speed of the RAM, which is why it's preferable for servers, not desktops. However, the loss in speed is overshadowed by it's stability, which is why it's also better for servers. After all, you want your server to have stable parts, because speed usually isn't that big of a problem.