R520, R620 is 2 socket system.
I need 1 socket.
when R320, R420 will be released?
I would think very soon, as the T620 has already been released:
T is Tower System...
Yeah, no kiddin' ... it is the same generation as the ones you are waiting for though. The T620 is out ... the other 12G servers (including your R320/R420) won't be far behind.
I've seen May and June for the next lot.