New RAM: Memory bus speed exceeds Chipset speed

I'm not quite sure where to post this so I'll try here.

After installing some replacement RAM my computer has begun blue screen crashing regularly, rarely starts up successfully, and according to SiSoftware Sandra:

"Warning 2542 : Memory bus speed exceeds Chipset rated speed. Reduce FSB/memory multiplier."

Could someone assist me with correcting the setting for this please?


Specification:

Mainboard : Gigabyte EP43-DS3L
BIOS : F9e 09/03/2009
Intel Core2 Quad CPU, Q9650 @ 3.00GHz

Chipset
Front Side Bus Speed : 4x 333MHz (1.33GHz)
Maximum FSB Speed : 4x 333MHz (1.33GHz)
Memory Bus Speed : 2x 533MHz (1GHz)

Memory Module(s)
Memory Module : Corsair CM2X2048-8500C5D 2GB DIMM DDR2 PC2-8500U DDR2-1066 (5-5-5-18 3-23-6-3)
Memory Module : Corsair CM2X2048-8500C5D 2GB DIMM DDR2 PC2-8500U DDR2-1066 (5-5-5-18 3-23-6-3)

Logical/Chipset Memory Banks
Bank 2 : 1GB DIMM DDR2 5-5-5-15 4-20-9-5 2T
Bank 3 : 1GB DIMM DDR2 5-5-5-15 4-20-9-5 2T
Bank 6 : 1GB DIMM DDR2 5-5-5-15 4-20-9-5 2T
Bank 7 : 1GB DIMM DDR2 5-5-5-15 4-20-9-5 2T
Maximum Installable Memory : 8GB
Memory Bus Speed : 2x 533MHz (1GHz)
Maximum Memory Speed : 2x 400MHz (800MHz)
Multiplier : 16/10x

Video System
Video Adapter : NVIDIA GeForce 9800 GT (112 SM4.0 1.6GHz, 1GB DDR3 2x900MHz, PCIe 2.00 x16)

Computer Memory Controller
Error Correction Capability : None
Maximum Installable Memory : 4GB
Bank0/1 - A0 : Empty
Bank2/3 - A1 : DIMM 2GB/64 @ 800MHz
Bank4/5 - A2 : Empty
Bank6/7 - A3 : DIMM 2GB/64 @ 800MHz

Memory Module (x2)
Manufacturer : Corsair
Model : CM2X2048-8500C5D
Extended Information : mVN
Type : 2GB DIMM DDR2
Technology : 16x(128Mx8)
Speed : PC2-8500U DDR2-1066
Standard Timings : 5-5-5-18 3-23-6-3
Version : 1.02
Memory DC Line : 1.80V
Timing @ 400MHz : 5-5-5-18 3-23-6-3
Timing @ 270MHz : 4-3-3-12 2-15-4-2
Enhanced Performance Profiles : Yes
Profile @ 533MHz: Optimal : 5-5-5-15 X-22-32-X 2T 2.1V