heat and errors - Page 3

Daffy · 2002-09-27, 02:01

Quote:

Originally Posted by xtreme2k

By the way, I think a program called memtest86 is even a better program to stress test memory than the prime95 torture test. For me it catches errors that Prime torture didnt catch.

http://hcidesign.com/memtest/

When I tried to boost the memory speed (256M DDR 2100) on my KG7-R, Athlon 1400, memtest86 was very happy for all memory modes of the mobo (turbo, etc...). Basically, it changes the latency, the driver strength, etc... However, as soon as I tried to boot windows, it crashed each time until I put the memory back to normal mode. Windows could boot more or less depending on the speed setup of the memory.

So, I am skeptical about relying on memtest86 only. Unless I missed something. I assume memtest86 can bypass the cache, etc..., doesn't it ?
I hope the tests were performed on the external memory, not in the cache...

johnymccarthy · 2002-09-27, 03:24

Lord_Humungus
outlnder
Lycorn
Deamiter
DSheets
daWabbit

Thank you one and all.

When I returned home from work this morning Prime95 was still wizzing along at 0.105 sec per iteration, and my other programs responded as they should, shutdown now taking seconds rather than minutes.

I don't understand why everything but Prime95 slowed to a crawl on starting up with my new DDRAM or how long it lasted, but I am glad to be back to normal after about two weeks of frustration,

To get back on topic my CPU temp is 58C with Prime95 running, and 53C when idle, Motherboard temp 30C constant.

John

xtreme2k · 2002-09-27, 04:57

I suspect you totally missed everything.

Unless you have a very large L2 cache, eg, 128MB+ I am pretty sure memtest runs on external ram. ALso you get to select how much memory you test also. By the way dont ever settle for 100% memory coverage, you need at LEAST 4000%-8000% for short terms, and most likely longer if you want complete stability. Just run the window client and not the DOS one. Your problem solved. If you cant even get into windows I dont see why you are trying to test.

Daffy · 2002-09-27, 14:45

My mistake. I was referring to an other tool that doesn't need DOS to test the memory. It wasn't memtest.

The thing is that it seemed to work fine but windows couldn't boot afterwards. So, it didn't help me much.

Thanks for your help.

QuintLeo · 2002-10-04, 01:05

Athlon XP1800+ oc to 1610 (140FSB) - Alpha 8045 / Delta 68CFM

Case has another Delta 68, the stock PS fan, and a 35-ish CFM Sunon blowing air through it - chipset temp is usually 1 or 2 degrees C above ambient, CPU 13 or 14 above chipset.

Which means on warm days the CPU sees 55-ish - I do NOT have A/C in my computer room, thus the serious cooling.

I haven't gotten around to setting up LMmonitor on any of the Linux boxen - yet - but I don't overclock the s2460 and most of the rest are PPGA Celerons, K5s, or K6s - and the cooling on all of THOSE machines is definite overkill - hand-me-down Athlon-class cooling on the Celerons and K6s, and hand-me-down K6-class cooling on the K5s. I've not had any errors on the CPUs/MBs I could attribute to heat - couple dead hard drives, but those were old and might have just been age deaths.

*ALL* of my machines have been RC5/OGR/CSC/DES crunchers 'till a few months back, when I swapped a couple of them over to UD. Got fed up with UD not answering questions and generally not being responsive to their volunteers, so now I'm moving machines over here.

Well, most of them - I still have one WFWg 3.11/DOS machine for some of my *old* won't run on 95/98 games - it's probably gonna stick with d.net 'till it finally dies.

9-)

lycorn · 2002-10-08, 22:00

QuintLeo

Be very welcome to our GIMPS community!
Hope you will enjoy "making math history" as much as I have been enjoying over the last few months (joined GIMPS in January).

Mivacca2 · 2002-10-14, 23:15

Quote:

Originally Posted by johnymccarthy

Athlon 1900 runs at 49C/120F with an AMD supplied cooler and fan,
but as yet have not managed to run Prime95 for more than about 2 Minutes!!

I am working on the problem and will try a more recent Bios for my new Elite K7S5A MB shortly.

John

:idea: What chipset are you using? Some chipsets freak out if you put too much strain on them for too long I know that recently there was a VIA chipset (might be the P4x400) that couldn't run the prime95 torture tests that Anandtech.com puts the MOBO's they review through... just a thought

Tasuke · 2002-10-15, 17:49

That motherboard uses the sis735 chipset, and i have 20 of them running various processors and all on prime95. it is really stable, with bioses dated after or on dec 10 2001. The bios of 9/18(?) gives errors on anything faster than an 1800+.

johnymccarthy · 2002-11-07, 01:55

Recently I began to get errors with other programs when running Prime95, the same faults that I previously cured by changing from SDRAM to DDRAM!
I updated the BIOS to the latest version as recommended giving a slight improvement.

Mine is a sorry tale, when I got around to checking the cpu temp it was 65C with prime running droping to the low 50's without.

I opened the box and found a build up of dust on the stock HS, off to the store for a big copper HS and high speed fan and case fan, the dust is travelling too fast to stick!

CPU temp now between 45C and 50C depending on ambient.

My problem now is the noise, my family are threatening to buy me a shed for me and my box, I won't have any cooling problems outside!

Sound familiar?

John

Daffy · 2002-11-07, 05:25

I had a similar problem earlier this year. Temperature starting going up abnormally. Cause: dust build-up. Now, I also have my case opened to keep it cooler and it builds up more dust everywhere so I have to inspect the motherboard once in a while and clean it with a spray and a vacuum cleaner. Talk about a work!

As for the noise and family issues... welcome to the club. Try to put your PC in a location where they don't see it too much, otherwise, you are going to have problems!

:D

outlnder · 2002-11-07, 05:26

Imagine what my apartment sounds like with 17 computers running 24/7 in the dining room.

The only real choice you have is to get a quieter CPU fan. Most likely you got a copper heatsink with something like a 50mm Delta 48CFM fan. The Delta is putting out close to 48 db of high pitched whine.

I replaced my loud CPU HSFs with a Volcano 9 setup. Big heatsink with copper insert and an 80mm fan. It is adjustable so you can get a quieter room.

Not trying to promote anything, but there are quite a number of Forums that deal with this problem. Check into http://arstechnica.infopop.net/OpenT...amp;f=77909585 for some terrific info.

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2002-09-27, 03:24	#24
johnymccarthy Sep 2002 2×7 Posts	Lord_Humungus outlnder Lycorn Deamiter DSheets daWabbit Thank you one and all. When I returned home from work this morning Prime95 was still wizzing along at 0.105 sec per iteration, and my other programs responded as they should, shutdown now taking seconds rather than minutes. I don't understand why everything but Prime95 slowed to a crawl on starting up with my new DDRAM or how long it lasted, but I am glad to be back to normal after about two weeks of frustration, To get back on topic my CPU temp is 58C with Prime95 running, and 53C when idle, Motherboard temp 30C constant. John

2002-09-27, 04:57	#25
xtreme2k Aug 2002 AE₁₆ Posts	I suspect you totally missed everything. Unless you have a very large L2 cache, eg, 128MB+ I am pretty sure memtest runs on external ram. ALso you get to select how much memory you test also. By the way dont ever settle for 100% memory coverage, you need at LEAST 4000%-8000% for short terms, and most likely longer if you want complete stability. Just run the window client and not the DOS one. Your problem solved. If you cant even get into windows I dont see why you are trying to test.

2002-09-27, 14:45	#26
Daffy Aug 2002 31 Posts	My mistake. I was referring to an other tool that doesn't need DOS to test the memory. It wasn't memtest. The thing is that it seemed to work fine but windows couldn't boot afterwards. So, it didn't help me much. Thanks for your help.

2002-10-04, 01:05	#27
QuintLeo Oct 2002 Lost in the hills of Iowa 2⁶×7 Posts	Athlon XP1800+ oc to 1610 (140FSB) - Alpha 8045 / Delta 68CFM Case has another Delta 68, the stock PS fan, and a 35-ish CFM Sunon blowing air through it - chipset temp is usually 1 or 2 degrees C above ambient, CPU 13 or 14 above chipset. Which means on warm days the CPU sees 55-ish - I do NOT have A/C in my computer room, thus the serious cooling. I haven't gotten around to setting up LMmonitor on any of the Linux boxen - yet - but I don't overclock the s2460 and most of the rest are PPGA Celerons, K5s, or K6s - and the cooling on all of THOSE machines is definite overkill - hand-me-down Athlon-class cooling on the Celerons and K6s, and hand-me-down K6-class cooling on the K5s. I've not had any errors on the CPUs/MBs I could attribute to heat - couple dead hard drives, but those were old and might have just been age deaths. ALL of my machines have been RC5/OGR/CSC/DES crunchers 'till a few months back, when I swapped a couple of them over to UD. Got fed up with UD not answering questions and generally not being responsive to their volunteers, so now I'm moving machines over here. Well, most of them - I still have one WFWg 3.11/DOS machine for some of my old won't run on 95/98 games - it's probably gonna stick with d.net 'till it finally dies. 9-)

2002-10-08, 22:00	#28
lycorn "GIMFS" Sep 2002 Oeiras, Portugal 2×7×113 Posts	QuintLeo Be very welcome to our GIMPS community! Hope you will enjoy "making math history" as much as I have been enjoying over the last few months (joined GIMPS in January).

2002-10-15, 17:49	#30
Tasuke Aug 2002 2³×3² Posts	That motherboard uses the sis735 chipset, and i have 20 of them running various processors and all on prime95. it is really stable, with bioses dated after or on dec 10 2001. The bios of 9/18(?) gives errors on anything faster than an 1800+.

2002-11-07, 01:55	#31
johnymccarthy Sep 2002 16₈ Posts	Recently I began to get errors with other programs when running Prime95, the same faults that I previously cured by changing from SDRAM to DDRAM! I updated the BIOS to the latest version as recommended giving a slight improvement. Mine is a sorry tale, when I got around to checking the cpu temp it was 65C with prime running droping to the low 50's without. I opened the box and found a build up of dust on the stock HS, off to the store for a big copper HS and high speed fan and case fan, the dust is travelling too fast to stick! CPU temp now between 45C and 50C depending on ambient. My problem now is the noise, my family are threatening to buy me a shed for me and my box, I won't have any cooling problems outside! Sound familiar? John

2002-11-07, 05:25	#32
Daffy Aug 2002 31 Posts	I had a similar problem earlier this year. Temperature starting going up abnormally. Cause: dust build-up. Now, I also have my case opened to keep it cooler and it builds up more dust everywhere so I have to inspect the motherboard once in a while and clean it with a spray and a vacuum cleaner. Talk about a work! As for the noise and family issues... welcome to the club. Try to put your PC in a location where they don't see it too much, otherwise, you are going to have problems! :D

2002-11-07, 05:26	#33
outlnder Aug 2002 2×3×53 Posts	Imagine what my apartment sounds like with 17 computers running 24/7 in the dining room. The only real choice you have is to get a quieter CPU fan. Most likely you got a copper heatsink with something like a 50mm Delta 48CFM fan. The Delta is putting out close to 48 db of high pitched whine. I replaced my loud CPU HSFs with a Volcano 9 setup. Big heatsink with copper insert and an 80mm fan. It is adjustable so you can get a quieter room. Not trying to promote anything, but there are quite a number of Forums that deal with this problem. Check into http://arstechnica.infopop.net/OpenT...amp;f=77909585 for some terrific info.