TWIN2X4096-6400C4DHX (2 Sets) NO POST

[Legionx]

RI bought one set of TWIN2X4096-6400C4DHX and installed in slot A1 and B1 also tried A2 and B2 and everything works. Now i ordered a second set to get 8 GB of RAM total i installed the second set got NO POST so decided to take out the first set i bought everything worked fine. Seems as soon as 8 GB are installed system does not POST. Here is my information:

 

Motherboard P5Q Deluxe (newest Firmware)

Operating system Windows Vista 64bit

First Set: TWIN2X4096-6400C4DHX V1.1

Second Set:TWIN2X4096-6400C4DHX V3.2

 

I'm installing the first set in yellow slots and second set in black slots. The following are my BIOS settings that i can change:

 

CAS# Latency

DRAM RAS# to CAS# Delay

DRAM RAS# Precharge

DRAM RAS# Activate to Prechq

RAS# to RAS# delay

Row Refresh Cycle time

Write Recovery time

Read to Precharge time

DRAM Voltage

 

Everything is auto right now could someone tell me what my above settings should be to get both sets working together or should i just try setting the DRAM Voltage to 2.1v

[Yellowbeard]

You most likely need to increase the voltage for your memory controller. Try testing in the 1.25v - 1.45v range. Also, be sure your DRAM voltage is at 2.1v.

[Legionx]

Ok i tried first to set the RAM voltage to 2.10v the system boots up fine with two sticks but not with 4 sticks. Now for setting the Memory Controller to 1.25-1.45v i have nothing directly called Memory Controller volatage but i do have the following:

 

DRAM Voltage

NB Voltage

NB GTL Reference

SB Voltage

 

So would the memory controller be the NB Voltage just want to make sure before i do anyhting.

[Legionx]

Ok after figuring out NB is memory controller i tried the following:

 

Setting to 2.10V (Failed)

Setting to 2.10V and NB voltage to 1.26 (Failed)

Setting to 2.10V and NB voltage to 1.30 (Failed)

Setting to 2.10V and NB voltage to 1.40 (Failed)

Setting to 2.10V and NB voltage to 1.40 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.26 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-800 5-5-5-15 (Failed)

 

Motherboard automatically assigns the memory 5-5-5-15 even setting to manual and setting it to DDR2-800 it fails. Like I appreciate the help but this is getting extremely annoying considering my case is the corsair obsidian and taking it in and out over 20 times to get the same result every time.

[Legionx]

Looking at the memory settings would this work:

 

 

Motherboard make and model: Asus P5WD2 or M2N32-SLI Premium/Deluxe

Each pair is tested and packaged together using the following settings:

AI Over Clock Tuner: Manual

CPU External Frequency: Manually set to 200MHz

DDR2 SDRAM Clock: Manually set to 800MHz

PCI Express Freq: Auto

PCI Freq: 33.33

Performance Mode: Standard

DRAM Timing Selectable: Manual

SDRAM CAS Latency: 4T

SDRAM RAS to CAS Delay (tRCD): 4T

SDRAM Row Precharge (tRP): 4T

SDRAM Active to Precharge Delay (tRAS): 12T

SDRAM Write Recovery Time: 5

DDR2 SDRAM Voltage: 2.1

CPU Core Voltage: Auto

FSB Termination V: 1.50 V

MCH Chipset V: 1.65V

ICH Chipset V: 1.20V

All other settings are motherboard defaults.

Maximum DDR2 recommended VDIMM: 2.1 Volts

 

I'm using the P5Q deluxe mind you so i'm not sure if i would need all the above

[WAPC]

DDR2-800 5-5-5-15 (Failed)

 

Have you tried running the timing at 4-4-4-12 for the Corsair TWIN2X4096-6400C4DHX 4GB (2x XMS2 2GB) PC-6400 (800MHz) DDR2 RAM, 2x240-pin DIMMs, non ECC unbuffered?

[Legionx]

Yea i can try that. I'm just right now trying to gather data did some research on people who had the same problems with the same RAM. I know i may have to use another DDR2 speed rather then DDR2-800 just not 100% sure. I know its not the memory just that i need the right settings. Probably going to give it another try for a few hours tomorrow. You are right though they say 4-4-4-12 on the chips but motherboard is auto detecting them as 5-5-5-15 and there are some other numbers ill gather more information tomorrow.

[Legionx]

I'm going to try 4-4-4-12 and also going to try the following:

 

DRAM FREQUENCY DDR2 800

DRAM TIMING CONTROL 5-5-5-15 or 5-5-5-14

DRAM VOLTAGE 2.1v

NB VOLTAGE 1.35v

Ai Twister set to light or experiment with ai twister

 

Hope one of these works

[Legionx]

Ok reading up on it more and reading the post by RAM guy which said "With 4 modules I would suggest setting the memory frequency at DDR667 and set the memory Voltage to 2.1 Volts and set the NB/MCH/SPP Voltage to +.2 Volts"

 

Only thing I'm not understanding is "NB/MCH/SPP Voltage +.2 Volts that mean +.2 volts added to the default NB Voltage?

[Wired]

That is correct.

[Legionx]

I have spent over 15 hours trying to figure this out and using over 4 forums to get information and still does not work. Every possible setting i can get failed and these are only some of the settings i tried.

 

AI Lighter/Light/Moderate = AI Tweaker set to enhanced compatibility instead of AUTO or strong which would be more overclocking and less compatibility

 

Setting to 2.10V (Failed)

Setting to 2.10V and NB voltage to 1.26 (Failed)

Setting to 2.10V and NB voltage to 1.30 (Failed)

Setting to 2.10V and NB voltage to 1.40 (Failed)

Setting to 2.10V and NB voltage to 1.40 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.26 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to Auto DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.40 DDR2-800 5-5-5-15 AI Light (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-800 5-5-5-15 AI Lighter(Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-800 5-5-5-15 AI Moderate(Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.40 DDR2-667 5-5-5-15 AI Light (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 5-5-5-15 AI Lighter(Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 5-5-5-15 AI Moderate(Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 4-4-4-12 AI Light (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 4-4-4-12 AI Lighter(Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 4-4-4-12 AI Moderate(Failed)

Setting to 2.10V and NB voltage to 1.32 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.34 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.36 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.38 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.40 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.38 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.36 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.34 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.32 DDR2-667 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.34 DDR2-667 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.36 DDR2-667 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.38 DDR2-667 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.40 DDR2-667 4-4-4-12 (Failed)

 

 

The chips work no problem with 2-3 chips passed memtest86 there is no crashes or anyhting for both sets also tested each set by using them for a week each using on average 3.4-3.6GB of the 4GB. One set is a three weeks old and the second set is five weeks old. Talking to Asus they said that Q2X8G6400C4DHX would work without any problems since there perfectly matched instead of my version 3.2 and 1.5 Is there anyway i can RMA all 4 chips in exchange for Q2X8G6400C4DHX perfectly matched set since the chips are the same. Also can you confirm that what Asus tells me is true or would i be back to the same thing I'm doing now?

[Wired]

All RMA questions should go through here: Request an RMA

[RJLeong65]

I have spent over 15 hours trying to figure this out and using over 4 forums to get information and still does not work. Every possible setting i can get failed and these are only some of the settings i tried.

 

AI Lighter/Light/Moderate = AI Tweaker set to enhanced compatibility instead of AUTO or strong which would be more overclocking and less compatibility

 

Setting to 2.10V (Failed)

Setting to 2.10V and NB voltage to 1.26 (Failed)

Setting to 2.10V and NB voltage to 1.30 (Failed)

Setting to 2.10V and NB voltage to 1.40 (Failed)

Setting to 2.10V and NB voltage to 1.40 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.26 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to Auto DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.40 DDR2-800 5-5-5-15 AI Light (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-800 5-5-5-15 AI Lighter(Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-800 5-5-5-15 AI Moderate(Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.40 DDR2-667 5-5-5-15 AI Light (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 5-5-5-15 AI Lighter(Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 5-5-5-15 AI Moderate(Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 4-4-4-12 AI Light (Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 4-4-4-12 AI Lighter(Failed)

Setting to 2.10V and NB voltage to 1.30 DDR2-667 4-4-4-12 AI Moderate(Failed)

Setting to 2.10V and NB voltage to 1.32 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.34 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.36 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.38 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.40 DDR2-800 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.38 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.36 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.34 DDR2-800 5-5-5-15 (Failed)

Setting to 2.10V and NB voltage to 1.32 DDR2-667 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.34 DDR2-667 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.36 DDR2-667 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.38 DDR2-667 4-4-4-12 (Failed)

Setting to 2.10V and NB voltage to 1.40 DDR2-667 4-4-4-12 (Failed)

 

 

The chips work no problem with 2-3 chips passed memtest86 there is no crashes or anyhting for both sets also tested each set by using them for a week each using on average 3.4-3.6GB of the 4GB. One set is a three weeks old and the second set is five weeks old. Talking to Asus they said that Q2X8G6400C4DHX would work without any problems since there perfectly matched instead of my version 3.2 and 1.5 Is there anyway i can RMA all 4 chips in exchange for Q2X8G6400C4DHX perfectly matched set since the chips are the same. Also can you confirm that what Asus tells me is true or would i be back to the same thing I'm doing now?

 

I suspect that one of the memory modules in your newer pair is defective.