Raising ram frequency

Hi

I have recently built this setup. (shown at bottom)

I am trying to raise the RAM speed higer than 535.2 MHz (3:8) @ 5-7-7-24

I have set the ram to 1066 in the bios andd this appears to have increased the voltage from 1.9v to 2.2v, however only made aa minute ddifference to the MHZ going from about 420MHZ to 532.2MHz.

I dont think my Ram is running at its full potential. Ram is - 2x2GB Corsair dominator 1066, and 2x1GB Corsair Dominator 1066?

Can anybody assist?

Regards,

Ben

AMD Phenom II X4 965
Windows 7 Ultimate Edition (Build 7600)
CPU Arch : 1 CPU - 4 Cores - 4 Threads
CPU PSN : AMD Phenom II X4 965 Processor
CPU EXT : MMX(+), 3DNow!(+), SSE (1, 2, 3, 4A), x86-64, AMD-V
CPUID : F.4.3 / Extended : 10.4
CPU Cache : L1 : 4 x 64 / 4 x 64 KB - L2 : 4 x 512 KB
CPU Cache : L3 : 6144 KB
Core : Deneb (45 nm) / Stepping : RB-C3
Freq : 3411.59 MHz (200.68 * 17)
MB Brand : Asus
MB Model : M4A79 Deluxe
NB : AMD 790FX rev 00
SB : AMD SB700 rev 00
GPU Type : NVIDIA GeForce GT 220
GPU Clocks : Core 635 MHz / RAM 405 MHz
DirectX Version : 11.0
RAM : 6144 MB DDR2 Dual Channel
RAM Speed : 535.2 MHz (3:8) @ 5-7-7-24
Slot 1 : 2048MB (6400)
Slot 1 Manufacturer : Corsair
Slot 2 : 1024MB (6400)
Slot 2 Manufacturer : Corsair
Slot 3 : 1024MB (6400)
Slot 3 Manufacturer : Corsair
Slot 4 : 2048MB (6400)
Slot 4 Manufacturer : Corsair