thnx Bloink, this RAM are more expensive than any other ones. I think RAMBUS memory lasted only like 1 year and then boom, NEWER MOBO no longer supports it. Also the MOBO's for this RAMBUS have 4 slots but this must be used in pairs, and if the other 2 slot available, you must have this FAKE MEMORY looking like that must be in its place or your system won't boot. Really crossing my fingers that someone still have/can use this.