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Failing Prime95 and Memtest

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May 21, 2005 3:08:13 PM

:frown: - what is going on - this is at stock settings!

AMD64 3200 - can to 2.4Ghz, but been running stock for a while
1 Gig Patriot LLK (2-3-2-5) DDR400 - can do DDR520, but again is running at stock


Temps are good, as I'm on water. Volts are good too.

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More about : failing prime95 memtest

May 21, 2005 3:27:01 PM

Probably the motherboard that doesn't like your Dimms. Try overriding SPD settings and relax timings. try updating the BIOS.

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May 21, 2005 3:34:08 PM

I'm not so sure, this is my PC, and I've had it for a while now, and it would run fine at 2.4Ghz / DDR420 (Cas 2.5) 24/7.

Btw, mb is an MSI Neo 2 Plat.

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May 21, 2005 4:13:42 PM

Have you got 2x512 ? If so, remove a stick and test again. Maybe one of your DIMMs died.

= The views stated herein are my personal views, and not necessarily the views of my wife. =
May 21, 2005 4:48:39 PM

Yep, I'm thinking the same, I tried running with just one stick and it seems stable - just in windows, as I havent run memtest yet.

How long is the warrenty on patriot sticks?

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May 21, 2005 5:42:48 PM

One step at the time is the best way to isolate the the limiting factor. The obvious choices are going to be either the Mobo, RAM, or CPU. One other possibilty that comes to mind is that the MOBO doesnt like that particular brand of RAM. Also you can easily get instability with an ify PSU. Is the RAM on the MOBO's QVL? To isolate the problem, begin by setting the RAM back to loose timings and a slow frequency. I am guessing that the multiplier can be reduced on your CPU. If so then reduce it lower than stock. Now find your Mobos max FSB. Since you have taken the CPU and RAM down to below stock settings this should allow you to OC the MOBO higher than you may have done previously. Bump the FSB until it becomes unstable and then either move to the next component or add a touch of voltage to the chipset. Write down your max FSB. Now run your stability test with your RAM at stock or below settings. If all is well then start OCIng the RAM and testing its stability in between increases.

Ive got a feeling that the Mobo doesnt like your RAM for some reason.

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May 21, 2005 7:33:12 PM

The RAM has been running fine for over 2 months without incident, the RAM seems perfectly compatable with the board.

Anyway, I ran mem test on each stick seperatly and they both passed, I let the program run 2 passes.

Ideas? - I hope the CPU isn't the problem, as I sanded the heatspreader for laughs and it got rid of the printed details of the CPU, thus voided warrenty!

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May 21, 2005 8:06:34 PM

If the RAM is compatible then your going to need to isolate each component and find their OC ranges. How much of an increase in FSB have you achieved with this system?

Intel P4 550(3.4)@<font color=green>5Ghz</font color=green>
Asus P5AD2-E-Premium
Crucial Ballistix DDR2 667@<font color=red>DDR2 800<font color=red> Owned!
TT 680W PSU
May 21, 2005 8:34:15 PM

Um, I don't want to overclock, my sh|t aint running fine @ stock. :lol: 

Right, so far - Im mem test stable when testing one stick at a time.

If testing both sticks I get errors.

I am Prime stable with both sticks for at least 35 tests (stopped it because I got bored), which is wierd, becuase test night it would fail straight away :eek: 

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May 21, 2005 8:46:11 PM

I didnt understand I dont suppose. I thought that the errors were occuring when you began the OCing. Which Mobo do you have?

Intel P4 550(3.4)@<font color=green>5Ghz</font color=green>
Asus P5AD2-E-Premium
Crucial Ballistix DDR2 667@<font color=red>DDR2 800<font color=red> Owned!
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May 21, 2005 9:11:21 PM

dude! <b>Read</b> my posts!

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May 22, 2005 1:52:36 PM

Is this the Socket754 Neo board? If it is, I recall that RAM timings should be set to 2T to run two DIMMs.

It's quite possible it would work for a long time set to 1T. It was probably marginal at that point, and something (like overclocking? :eek:  ) slowly pushed it over the edge.

I'm not surprised it would pass Prime95 and not MemTest. MemTest puts RAM through some pretty esoteric usage patterns that Prime95 might not even use. Plus, you'd be surprised how often RAM can lose a bit here and there and still not cause any obvious problems (at least not right away). I recall one pretty difficult memory test--one that memtest doesn't do--is to stuff the RAM with data and leave it holding that data for a few days or even weeks, then come back and check data integrity. A lot of otherwise stable RAM (especially non-ECC RAM) won't pass that test!

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May 22, 2005 4:05:10 PM

Is a skt 939 board with a winchester chip.

The mem test errors have decreased, when I first started to notice the problem I ran mem test and got 3xxxx errors, last time I check I only got 10-50 errors.

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May 22, 2005 4:49:58 PM

Quote:
Btw, mb is an MSI Neo 2 Plat.


And you sincerly expect a MSI lasting more than 2 months??? Still good it does more than 3 days!!

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May 22, 2005 7:08:52 PM

Ok when you run the sticks individually you dont get any memtest errors, but together you do get probs rite? You tried clocking the RAM to 333Mhz? You might have knackered your CPU's memory controller when you overclocked.
May 22, 2005 10:10:51 PM

:frown: - that's what I've been thinking

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May 23, 2005 3:15:17 AM

could try up'in the vcore of the cpu to what it was when u were oc'ing and see it it passes for longer? And does your system stay stable on the desktop at stock? Or does it stuff up (kick u out of apps and freeze?)
May 23, 2005 4:54:35 AM

I started noticing problems as windows would randomly restart...but, the odd thing is, Windows is not running fine, and has been for about 10 hours.

The errors in mem test seem to becoming less and less as I stated earlier (from thousands, down to around 10). I haven't changed any settings since I first posted. Only thing I've really done is take out clean and replace the DIMMs.

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