1066Mhz downclocked to 800Mhz

i hope people wont get tired of answering these questions but i still cant figure it out after searching the answers for quite some tome already:

Here's the memory information:

KHX8500AD2K2/4GR
4GB Memory Kit
4GB PC2-8500 CL7 240-Pin DIMM Kit (2 pcs.)
Assembled in China

08 1814

bought in from fry's electronics:

it says also from the Fry's sticker:

4GB PC8500 Dual Hyper X
(2x2 GB) Speed 1066Mhz
lifetime warranty

$ 129.99

I cant seem to find my memory (KHX8500AD2K2/4GR) in kingston's website.

I cant also find out if my memory sticks are Single Channel or Dual Channel

The closest i could find were:

for single channel:

KHX8500D2/2G 2GB DDR2 1066MHz Non-ECC CL5
5-5-5-15 2.25V

*(i probably have 2 pcs. of these)

for dual channel:

KHX8500D2K2/4G 4GB DDR2 1066MHz Non-ECC CL5 (kit of 2 – 2GB)
5-5-5-15 2.2V

*(or i probably have 1 set of this)

im guessing that what i have is the dual channel kits but i cant be sure since it is said in the box that i have purchased
that the kit is named KHX8500AD2K2/4GR not KHX8500D2K2/4G.

The main problem i am having is that i can't seem to run these memories to their specified speed of
1066Mhz. It is downclocked to 800Mhz only.





Here's what i tried to do:

i was looking at these sites before i tried to change the settings in BIOS:

http://www.kingston.com/hyperx/produ...ddr2.asp#1066d

and this

http://www.valueram.com/datasheets/KHX8500D2K2_4G.pdf

*sigh* here's the last thing i did.

BIOS>Cell Menu:

FSB/Memory Ratio from [1:2] to [1:2.66]

the Adjusted DDR Memory Frequency changed from [800] to [1066]

then the next thing i did was to head to the

"Memory Voltage" and from [Auto] to [2.20]

*2.20 Volts had e red highlight in it and is said that it is not a recommended setting

then i went to Advance DRAM Configuration>DRAM Timing Mode from [Auto] to DCT 0

i set the DCT 0 to the ff configuration:

CAS Latency (CL) = 5 CLK
TRCD = 5 CLK
TRP = 5 CLK
tRTP = [Auto]
TRAS = 15 CLK
TRC = [Auto]
tWR = [Auto]
TRRD = [Auto]
tWTR = [Auto]
tRFC0 = [Auto]
tRFC1 = [Auto]
tRFC2 = [Auto]
tRFC3 = [Auto]

(i also changed a setting from 2T to 1T
)
*anyway i had the ff options for CAS Latency:

Auto
3 CLK
4 CLK
5 CLK
6 CLK
7 CLK DH_Only (what is this?)

then i saved it and then it rebooted

then i get this msg:

CMOS Checksum Bad
Press F1 to Run Setup
Press F2 to load default values

my system specs:

Phenom 9950 BE
K9a2 Platinum v 1(790FX + SB600)
4870 512mb
650watts