P4B266-c and dying ram

[Tazzlarie]

I have been lurking for a while now and come here when I have a problem. I usually find the answer but this time I am at a complete loss as to what could be happening.

I have a p4b266c that is killing ram. I have had 3 sticks go bad in this system in a matter of a few weeks. I have never had problems with ram dying so I am not sure what could be the problem. The computer initially had 512 ddr and then I was getting blue screens of death with no post up beeps, then I replaced the old 8g with a 40 gig. Of course, I still had the same problems. Took out one stick at a time and tested the system, and got it up and running with one seemingly good stick. Added another stick from another machine and everything ran fine for a week. Then it started acting up again. Got one stick that made it work, it ran fine for another week, then tonight, it started all over again. This time I ran memtest and within a few minutes I had 2700 errors. I am at a loss for what I should be testing to see what could be making this ram go bad. Could it be the power supply, or the motherboard, or the P4? How would I go about testing them to see what is going wrong?
Specs:
1.8 p4 (not overclocked)
256 pc2100 ddr Muskin
radeon 7200
dlink ethernet
Sound Blaster audigy
maxtor 40g with 133 bus
power supply Morex 400W

Any help or steering in the right direction would be greatly appreciated.
Kim

 

[ChampionAtTufshop]

i would just replace the motherboard
seems like it is killing the ram :Q

the cpu most likely wouldnt be the culprit.....psu doesnt seem like it would either...

 

[SFang]

I have memory problem with this P4B266-C motherboard too.

I have two sticks of 512MB PC2100 DDR memory. If I put any one of them into the motherboard, memtest runs fine with no problems for several rounds. If I put two sticks in together, and make it 1GB memory, the memtest will give 18 errors within the first round. The only reason I can think of is the motherboard.

Anyone used 1GB memory on this motherboard successfully ?

 

[LazyBastard]

I've used 2 sticks of Mushkin 512MB Level2 (Cas 2-2-2) PC2100 in my P4B266-C. I'm only using one of them in it right now, but I never had any problem when using 2. I have a P4 1.6A at 2.4 (150FSB) on the board, with mem ratio of 1:1. The memory settings are at default, which equals 2-6-2-2 (grey'd out). These are the same settings I used with both sticks in the board.

 

[SFang]

I don't have any problem using two stick of 512MB memory too, booting into windows fine, Sandra fine, Prime95 fine. But, Memtest86 reports errors! Why? What components caused the errors? BTW, I am starting a new thread, see if anyone have similar problems.

 

[LazyBastard]

SFang, what are your memory timings set to when you before and after you stick in the other 512MB memory stick? When you add another stick of memory, you get more memory, but it's going to take longer for the system to access the memory (i.e. more clock cycles) because it has twice as many memory addresses. Sometimes you have to raise your memory timings (from, say, CAS 2 to CAS 2.5) for two sticks of memory.
If you don't have your memory timings set to "default", try that, and see what results you get with memtest86.
Also, you may be able to keep your current timings by raising the memory voltage via jumpers on the motherboard.
You also may have to do both - raise the timings and raise the voltage.

 

[Trader05]

I have this board with 1.6a@2.1 (133mhz bus) and 2 sticks of 2100 ddr. Crucial and Kingston Value, both 256mb sticks runing 2-2-2-5. No problems what so ever, tho i did have a crucial stick die on me before, kind of weird cause it did work then just died one day.