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What FFTs hit memory the hardest? - Page 2

post #11 of 17
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Quote:
Originally Posted by falconer65 View Post
For memory testing I use memtest. I test the memory to the highest I can so I reduce the chance of memory being the issue.
I use Memtest as well but passing Memtest doesn't mean that the settings will be stable in the OS.
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post #12 of 17
The answer you are looking for is large FTT's when running p95.
If you get errors on cores, freezing, during the larger FTT tests, then it is usually memory, or memory controller related.

Errors, BSOD, lockups on the smaller FTT tests are usually CPU related.
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post #13 of 17
Quote:
Originally Posted by dave12 View Post
I was wondering about the people, floods are assumed problematic. I heard from a few people that getting killed was fairly easy, but that was mostly from Marines and trouble seems to follow those guys. The David Carradine tranny sex autoerotic mob death thing did happen though.


Still looking for an answer.

edit- when stress testing with Prime 95 it changes "FFT length" every 15 mins, small medium and large 8k to 4092k I think, and some stress CPU, IMC or Memory harder than others returning errors or bluescreens to show instability. I was wondering which I should hammer away on for a few hours specifically before just allowing it to run the blend test for a day.

well yes people/ tourist get killed here but they are mostly bad@sses to begin with. i wouldnt say its easy to get killed here, it can happen in any country big on tourism, yours my homeland etc...

anyway, i would say as to prime 95, i cant really give you an answer on what you do.. im just worried if i say run it for a few hours and cuases damge to your rig, i would feel guilty
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post #14 of 17
Thread Starter 
Quote:
Originally Posted by Precision_PC View Post
The answer you are looking for is large FTT's when running p95.
If you get errors on cores, freezing, during the larger FTT tests, then it is usually memory, or memory controller related.

Errors, BSOD, lockups on the smaller FTT tests are usually CPU related.
Thanks. I don't suppose you would suggest a range like 1792 to 4096 or anything?
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post #15 of 17
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Quote:
Originally Posted by stubass View Post
well yes people/ tourist get killed here but they are mostly bad@sses to begin with. i wouldnt say its easy to get killed here, it can happen in any country big on tourism, yours my homeland etc...

anyway, i would say as to prime 95, i cant really give you an answer on what you do.. im just worried if i say run it for a few hours and cuases damge to your rig, i would feel guilty
Blowing up hardware is part of the OC'ing experience. That said Prime isn't going to hurt anything unless you don't have proper cooling/power. Glad to here Thailand isn't one big Detroit, too.
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post #16 of 17
Quote:
Originally Posted by dave12 View Post
Thanks. I don't suppose you would suggest a range like 1792 to 4096 or anything?
You want to run the blend test to cycle through all available memory.
The in place large ftt test only test one section of your RAM.
You could also set up your own custom blend, more info here.

Quote:
The "Small FFTs" test uses relatively small FFTs which can fit into the CPU cache. As a result, the small FFT test is the one which accesses your main memory the least but it still makes some memory accesses.
Quote:
The "In-place large FFTs" test uses relatively large FFTs which cannot fit into the CPU cache so this test accesses main memory a lot. It only accesses a relatively small amount of main memory because it runs the FFTs in-place so it accesses the same RAM over and over.
Quote:
The "Blend" test uses FFTs with sizes which range from very small to very large. The FFTs are not run in-place so the tests cycle through RAM. The blend test automatically picks a "Memory to use" value which uses up all the RAM in the computer. This is the version of the test which is most likely to fail if you have bad RAM.
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post #17 of 17
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Quote:
Originally Posted by Precision_PC View Post
You want to run the blend test to cycle through all available memory.
The in place large ftt test only test one section of your RAM.
You could also set up your own custom blend, more info here.
I have been running 2048 (or whatever) through 4096 blend but with the custom range, not doing in place either. I just wanted to hit the memory part as hard as I could before I just let it run a normal blend. I know the CPU is stable at this speed, the IMC and memory with those timings is where I know the problem is going to be.
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