Wow dude looking at it with CPU-Z and it's at 532MHz =X
take 532 and multiply it by the number of ram sticks you have. 2? 3? 4?

532 x 2 = 1064 MHZ (a bit low)

532 x 3 = 1596 MHZ (average)

532 x 4 = 2128 MHZ (basically the equivalent of my system but I only use 3 sticks)