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TWIN2X4096-8500C5DF limit to 800mhz?


Duesouth

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twin2x4096-8500c5df-g limit to 800mhz

I bought this kit brand new from the store and I am also experience the same porblem.

I bought a kit of factory match sticks.

still locked to 800 MHz.

how to you unlocked it to 1066 MHz???

this is the only ram in the system.

I am disappointed.

I have manual raised it to 2.10 volts like mention to do 5-5-5-15-2T at 2.1V for 1066 MHz.

does not work.

my computer is not overclocked. not overclocked.

read my computer info.

please help me unlock the potential of these ram ddr2 1066 twin2x4096-8500c5df-g.

which tool aid or software would you recommend me to view my ram in windows xp. maybe it is my hardware detector that is at fault under windows xp

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under memory tab

done that.

type ddr2 channels # Dual

Size 4096 MBytes DC mode Symmetric

 

Timmings

DRAM Frequency 400.5 to 400.9Mhz

Fsb:dram 5:6

cas#latency (CL) 5.0 clocks

Ras# to Cas# delay (tRCD) 5 clocks

Ras# Precharge (tRP) 5 clocks

Cycle Time (tRAS) 15 clocks

bank cycle time (tRC) nothing displays

Command Rate (CR) 2T

Dram idle timer nothing displays

total CAS@ (tRDRAM) nothing displays

Row To Column (tRCD) nothing displays

 

so my ram is not running at 1066 or 800 but at 400mhz if I understand correctly. wow

 

under SPD tab

 

slot #1

ddr 2

module size 2048 correction none

max bandwidth pc2-6400(400Mhz) registered nothing displays

manufacturer corsair buffered nothing displays

part number cm2x2048-8500c5d spd ext. epp

serial number nothing displays week/ year blank

slot 2

empty

slot 3

ddr 2

module size 2048 correction none

max bandwidth pc2-6400(400Mhz) registered nothing displays

manufacturer corsair buffered nothing displays

part number cm2x2048-8500c5d spd ext. epp

serial number nothing displays week/ year blank

slot 4

empty

 

I have also update the bios to revision #1605

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so my ram is not running at 1066 or 800 but at 400mhz if I understand correctly.
Incorrect. 400 is the ACTUAL speed, 800 is the EFFECTIVE speed. You would see 533 there if they were running at the correct speed.

 

All you should have to do is to go into your BIOS and change the memory / DRAM speed to 1066, as you have stated you have already changed the voltage and timings to the correct settings.

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Download Memtest Version 2.11from--->

and extract the ISO image. Burn the ISO image to an CD-ROM disk.

Download CPU-z from
.

Insert a single stick in the first slot (Closest to the CPU) and enter your BIOS, set to these values:

AI Overclock Tweaker

Ai Overclock Tuner = Manual
CPU Ratio Setting: 8
FSB Frequency = 333
PCIE Frequency = 100
FSB Stap to Northbridge = 333 Mhz
DRAM Frequency = 1066Mhz

DRAM Timing Control = Manual

CAS Latency = 5
DRAM RAS# to CAS# Delay = 5
DRAM RAS# Precharge = 5
DRAM RAS# Activate to Precharge = 15
RAS# to RAS# Delay = Auto
Row Refresh Cycle Time (tRFC) = 60 
Write Recovery Time = Auto
Read to Precharge Time = Auto
Command Rate = 2N(T)
All other to Auto

DRAM Static Read Control = Auto
DRAM Read Training = Disabled
Mem. OC Charger = Auto
AI Transaction Booster = Disabled
Relax Level = 2
CPU Voltage = Auto
CPU PLL Voltage = Auto
FSB Termination Voltage = Auto
DRAM Voltage = 2.1v
NB Voltage = 1.25v
SB Voltage = Auto
PCI-E SATA Voltage = Auto

Loadline Calibration = Auto
CPU Spread Spectrum = Disabled
PCIE Spread Spectrum = Disabled
Clock Over-Charging Voltage = Auto
CPU GTL Volage Reference = Auto
NB GTL Voltage Reference = Auto

Legacy USB = Disabled for Memtest, Enabled afterwards.

Shut the system down. Boot to the Memtest CD with that single stick and allow for two full paasses. Shut the system down. Remove the first stick and insert it in slot threee. Repeat memtest. Shut the system down. Remove the first stick and insert the second stick in slot one. Repeat Memtest. You have now tested both sticks in single channel mode.

 

Now test for the Dual Channel Mode function of the memory controller. Insert a stick in slot one and three and memtest. If Stable enter Windows and post screenshots of CPU-z's CPU, Memory and SPD tabs.

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