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Bad Module


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I think I may severel bad modules. It wouldnt hurt to try to send them all back I suppose. Here is my problem: I keep getting random skips and stutters in 3d games and I have replaced my vid card and mobo/cpu. the only things I havent replaced are the psu and harddrive (along with the ram).


What would cause these skips and stutters and how can I determine if it is the RAM and how can I determine which module(s) are defective?


Thanks :)


I have 4 gigs of vs512mb400 and I would like to send a gig back at a time if that is ok (so I can still use my comp while 2 modules are off). :D


Btw, any possible idea what would cause this horrible random stuttering?


I will also need an ram is possible :).

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Bios Settings:


CPU- Hyper Transport Frequency = 1000mhz

HT Data width upstream = 16 bit

ht data width down stream = 16 bit


Memory Config:

mem lock mode - auto

hardware memory hole - disabled

bank interleaving - auto

burst length - 4 bits

mct timing mod - auto

twcl - auto

twr - auto

async lat - auto

read preamble setting - auto

2t command - auto


ECC Config



ECC CHIP KILL - disabled

dram scrub redirect - dis

dram bg scrub - disabled

l2 cache - bg scrub- disabled

data cache bg scrub - disabled


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I have also gotten some "memory cannot be read errors" but I wonder if it is also the ram causing this graphical stutter/jutter/skipping.


I have never had this problem before and as I said, I have replaced pretty much every other piece of hardware so it MUST somehow be the ram.


Thanks :)

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Try with these timings:


CAS Latency (tCL): 3

RAS to CAS Delay (tRCD): 4

Row Precharge (tRP): 4

Active to Precharge Delay (tRAS): 8

2T Command Rate: Enabled


Memory Voltage: 2.75 Volts

All other settings to defaults.


You also may want to test one stick at a time.

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