I have a old desktop box that is running xubuntu with xfce ( 12.04.01 ).

It has two memory slots in it and the specs for the
motherboard show that it can max 2 gigs and run DDR up to PC3200 (400mhz).

I now have one slot filled with PC3200 , 1/2 gig.

I would like to verify that this chip is running at 400 mhz. I think it may be clocking back down to PC2700.

Is there anyway to do that from the terminal?