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

uhm is that not what i did? (sorry im not meaning to be rude sorry sorry sorry) i already did what u said even 2.0 to 2.1 to 2.2 volts..

u probably didnt read my first post as much since i guess the length is kinda boring!

thanks for the quick reply tho

Is there a BIOS update that addresses a fix for memory regarding the memory speed and stability?

What badge said about memory speed.

Single/dual channel is a function of the motherboard not the memory.

RAM overvolt warning is a typical warning built into many BIOS's. If you are running your RAM at factory recommended values for your speed, ignore it.

CMOS checksum warning is an indication of a usually minor BIOS problem, not a main memory problem. You can usually clear it by entering the BIOS and simply resaving your existing settings. If not, clear the BIOS by however the motherboard manual recommends and reenter your BIOS settings.

At DDR2-1066 speeds, your "1T" setting may not be stable.

I would be unhappy with that memory if advertised rate of 5-5-5-15 1066MHz needed to be downgraded to 7-8-8-24 timings. Where would you be if you overclocked the system BUS. At least the DIMMs will transfer data to the CPU at 8.5GBs/sec., but with a slow response time of 7 CAS. I don't have any DDR2 running at 7 CAS, all mine are 4-5 CAS.

Test the RAM with memtest. Software (games) crashing and system restarts are signs of skunk RAM.

http://majorgeeks.com/Ultimate_Boot_CD_d4981.html

http://www.memtest86.com/