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Asus Striker + 4gb xms 6400 ddr2 memory instability


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I had posted this problem somewhere else but I was instructed to create my own thread since mostly people don't share the same configuration so here it goes.


I recently purchased a mobo, case, vid card and 4 sticks of 1gb corsair 6400 Ram assemble a new computer. After I was done I had installed only 2 gbs of ram at first really for no reason. It was running perfectly however when I installed the other 2 the system completely freaked out!

I'm running both ubuntu and windows xp on my system and it will simply crash hard.

Tests I performed were just using 2 sticks, then installing a third one then installing the fourth. After installing 3 the system was still performing solidly. When I installed the fourth one problems arose again. I wanted to also rule out the possibility of the fourth slot being damaged so I moved the 2nd stick to the fourth slot and it still works properly. when I load the BIOS it'll show the memory as 4096 so it "sees" it just gets really unstable

Right now I'm running using only 3gb of RAM 'till I find out what the problem might be because it seems running the whole set will give me problems. I bought them at the same time from the same store so they should be from the same batch.


My computer gear is

Asus Striker Extreme Motherboard

nVidia GeForce 8800 GTS card 320mb

E6420 intel core 2 duo processor.

Thermaltake 480w Power Supply

I haven't really gotten to play with the bios settings yet since I wanted to test normal performance before trying any OC.

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Check your DRAM modules and make certain that they are all either version 1.xx or 2.xx. If they are then,


Enter your BIOS and set:


Memory Timing


FSB - Memory Clock Mode: Unlinked

CPU FSB: 266

CPU Multi: 8

DDR FSB: 800

tCL: 5

tRCD: 5

tRP: 5

tRAS: 15


Advanced Memory Settings

tRRD: Auto

tRC: Auto

tWR: Auto

tWTR: Auto

tREF: Auto

Async Latency: Auto



CPU Spread Spectrum: Enabled

PCIE Spread Spectrum: Enabled

MCP PCIE Spread Spectrum: Enabled

SATA Spread Spectrum: Enabled

LDT Spread Spectrum: Enabled


CPU Internal Thermal Control: Enabled

Limit CPUID MaxVal: Enabled

Enhanced C1 (C1E): Enabled

Execute Disable Bit: Enabled

Virtualization Technology: Enabled

Enhanced Intel Speedstep Tech: Enabled

LDT Frequency: 5x


PCIEX16_1 Frequency (Mhz): 101

PCIEX16_2 Frequency (Mhz): 101

PCIEX16_3 Frequency (Mhz): 101

SPP<->MCP Ref Clock, Mhz: 201




Vcore = Auto

Vdimm (DRAM Voltage) = 2.0v

1.2v HT: Auto

NB Vcore: Auto

SB Vcore: Auto



Download Memtest from http://www.memtest.org. Unzip and burn the ISO image to an optical disk. Shut the system down. Insert one stick of DRAM into the first slot and boot to the CD. Allow for two full passes. Do the same with all four sticks of DRAM. When assured that all four sticks are stable, take one stick and put it is the second slot and test. Then move it to the third slot and test. Repeat for the fourth slot. If this all passes, then install two sticks in Dimm 1 and Dimm 3 and test. Remove and repeat with the second set.



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