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Computer crash when processing large amounts of data

I'm pretty sure there's a reason they're getting out of the RAM selling business.
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They have surely moved from my recommended list to my Do not buy list in the last 3 years. I would not touch their power supplies or anything other than SSDs.
 
Stereodude said:
I'm pretty sure there's a reason they're getting out of the RAM selling business. ;)
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Haha, pretty cool to see people from other forums attending more forums that at first glance :p

Anyway, i have some news people.

Howell @ Storageforum.net suggested to place the same types of RAM on the same channels, so instead of 10700 @ A1,B1,C1 and 8500 @ A2,B2,C2, i've now placed 10700 @ A1, A2 and 8500 @ B1, B2. That now leaves me with 2 DIMMS (1x 10700 and 1x 8500) unused, and channel C1,C2 empty.

And guess what... the rig is stable. I'm doing everything i can to make this crash, and yet, it's running solid. My next step is to fill C1 with 10700 and see if it stays running. If it does, i'll add the 8500 to C2, and see what happens. This means that at that point, C1 and C2 have a mixed RAM on the channel, like my original setup that gave me problems.

I'm not sure anymore what it proves, but to me it is a sign that for some reason, this memory just won't run on Triple Channel when being mixed together.

My vendor has agreed to send me some additional 10700 memory and take back the 8500. If my rig then stays stable @ Auto settings, im pretty much convinced that the types were different. If it crashes again, i'll look back in the direction of 12GB of RAM needing more voltage.

About that last point, something that was allready said by alot of people, i did up the voltage when having 12GB inserted. It didn't make it stable.

I tried 1.64-1.66 DRAM Voltage, and 1.3-1.35 QPI voltage. I tried different timings, up to 9-9-9-20, and tried DBCLK 1066-1333. Nothing helped to make the rig stable, with 12GB inserted. Funny point is, when only 1 set of 6GB inserted (doesn't matter which one), the rig was stable, on all those settings mentioned.

I always thought that on purpose mixing of 2 types of memory, atleast @ my experience with dual channel, was never a problem: the rig would simply run on the lowest memory speed. Still it is strange that the rig will only crash when copying large amounts of data, while having run smoothly for over a year, playing games, VMWare, running various programs, doing stuff on internet, running 24x7, etc.

Buck, from Storageforum.net, suggested to make my drives run on SATA1 instead of SATA2, but to be honest, i don't think that is the problem.... then again, i'm willing to test every aspect to finally find the problem once and for all. Think i'll wait for my new DIMMS first.

And if everythings stay stable then, i'm thinking of making it my sole mission to get OCZ admit they where wrong, lol ;)
 
drescherjm said:
They have surely moved from my recommended list to my Do not buy list in the last 3 years. I would not touch their power supplies or anything other than SSDs.
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I basically stopped buying their stuff after they tried to screw me on every rebate offer I filled out for their products (which was 3 of them over a few years). They would always reject it with some BS excuse that fell apart when I called with my copies of my submission in hand. I completely ignore any rebate they might be offering when looking at prices which means their stuff just isn't as good of a deal as other brands.
 
Well, here we are, almost at the end of my adventure in OCZ memory land.

I inserted the memory as stated before.

My computer was running rock solid with 10700 in A1,A2, and 8500 in B1,B2. CPU-Z confirmed the memory was running @ Dual Channel, and it ran on the lowest speed (533 MHz).

After that, i added 10700 to C1... CPU-Z confirmed the memory was running @ Triple Channel. Guess what happened? It crashed, almost instant. After that, i removed the DIMM from C1, and added it to C2. It crashed. I removed the DIMM from C2, added the 8500 DIMM to C1, it crashed. I removed it and placed it in C2, it crashed.

After confirming it crashes in Triple Channel *Mixed*, i went on ahead and tested it on Dual Channel *Mixed*. The rig remained stable.
I even took it a step further, and inserted the memory in A1,A2 and C1,C2, just to rule out that the DIMM slots aren't defect. The rig remained as solid as ever.


So all in all, what does this mean?
This proves that for some reason, the memory won't run stable when mixed, and @ Triple Channel. The DIMM slots are not the culprit, nor is the Triple Channel mode by itself. It's only crashing when mixing the 2 types of memory @ Triple Channel. @ Dual Channel, the 2 types are running solid.

It freaks me out. Why would this memory run;
- stable when not mixed @ Double Channel;
- stable when not mixed @ Triple Channel;
- stable when mixed @ Dual Channel;
-Unstable when mixed @ Triple Channel?

Afaiac, this proves that the memory is not stable when mixed in Triple Channel.

OR: The rig just cant handle more then 4 DIMMS @ the standard voltages. Now, i tried to up voltages etc. as eleborately described in my previous posts, so don't think that is the problem.
We will know for sure once i have my 6 DIMMS of 10700 memory.
Posted via Mobile Device
 
your thread is about memory problems, not data storage, so...my comments are about data storage, not your memory problems.
 
trackersoft said:
your thread is about memory problems, not data storage, so...my comments are about data storage, not your memory problems.
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So what was the point of your posts in this thread? lol :p

I think the OP figured it out and is good to go for now, so we should probably let this be. ;)
 
Hi everyone,

Yesterday i got a call from my reseller, telling me he had the new memory DIMMS. I took em home, plugged em in and confirmed it was PC3-10700 memory. I returned the PC-3 8500 memory to the reseller. I now have 6 DIMMS of PC3-10700 memory in my computer.

The system is running rock solid. I copied many TB's, while downloading, playing games, doing VMWare, after that i ran Memtest and Prime95 overnight, and all is stable.

Now, to me this proves that the problem was the PC3-8500 memory being mixed with the PC3-10700 memory. Ofcourse OCZ still claims that this memory is the same, but the fact is that it, the memory showing up as PC3-8500, is NOT COMPATIBLE with the memory showing up as PC3-10700. All these tests and real-life findings prove it.

So, no manual settings, no voltage tweaks, no faulty memory (as the PC3-8500 was tested for hours, 0 errors, AND ran fine on its own).

In the end the problem was exactly like i suspected:
It are 2 different types of memory, running on different SPD's and NOT being able to run stable together, while performing high loads on the RAM.

Hopefully this will help other people who are having trouble with 2 types of OCZ memory that 'should be the same'.

This thread can now be closed, as the problem is resolved by replacing the 'older revision of the same type of memory'.

Thank you all for reading my gibberish and coming up with good ideas :)
We'll meet again at the next upgrade / failure of my rig ;)

Kind regards,
Kami.

memory.jpg
 
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