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RMA Request - Corsair TwinX XMS3700


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Okay, I alreday have these Corsair TwinX XMS3700 (2*256Mb) modules for about 1 year, but I had never used them on the speed they were designed for (233 Mhz). But as I've become more interested in overclocking, I saw that i could never get beyond ~220Mhz without stability errors, no matter how high I set the latency.

A few days ago, I ran memtest86+ and, indeed, it reports a bunch of errors every time it does test5 :[pouts: So it seems as I have bad luck with this pair...

If I put the divider to 5:4 (this is the only divider that seems to boot with this memory) I can set the FSB to 262Mhz stable. So the chipset is not the problem, it must be the ram... What can I do now?


My system config:

AthlonXP 2500+

Abit NF7-S

Enermax 370W

Maxtor 30Gb HDD

MSI Geforce FX5200

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I really doubt that a 2500+ can run at that Freq. Please try and set it to 220 MHz and see if it will pass or actually I would try these settings to test the modules.

CPU Freq: 200 MHz

Memory Frequency: 100%

Dim Voltage to 2.7 Volts

Resulting Frequency: 200 MHz

SDRAM CAS Latency: 3T

SDRAM RAS to CAS Delay (tRCD): 3T

SDRAM Row Precharge (tRP): 3T

SDRAM Active to Precharge Delay (tRAS): 8T

Then test them one up, if they both pass at these settings, you might just be at the top end of your CPU.

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I tested them the way you said, but there were no errors.

Errors only seem occur above ~220Mhz


Why would it be impossible that a 2500+ can run at 2600Mhz? I've seen bigger OC's than mine. Remember that my multiplier is unlocked, so I can test any FSB I like.

http://www.afreeimagehost.com/upload/6493/2536.JPG :This screenshot was taken at 2536 Mhz and with a bus speed of 483 Mhz. The divider was 1:1. Pifast is a CPU-only benchmark, that's why it passed. Running 3Dmark or games resulted in a reboot, even at 233Mhz


And as a proof that it's not the chipset that is can't handle more than 220Mhz: http://www.afreeimagehost.com/upload/6493/2442_FSB257.JPG


Some memtest86 images:



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