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Haswell Overclocking Guide [With Statistics] - Page 1104

post #11031 of 19539
Quote:
Originally Posted by thrgk View Post

whats the quick way of testing CPU OC, x264? how do I run it, and how long is a good "test" time.

That or Prime95 using the custom 1344K FFT length. 10 passes of x264 should give you a good idea, or an hour of Prime. Chances are if it is bad it'll fail in the first 10 minutes or so of Prime. The Intel Extreme Tuning Utility benchmark (not the stress test) is probably the fastest if you just want a quick 2 minute check - it'll get you in the ballpark at least.
post #11032 of 19539
^ This. I ran stable on lots of tests and the 1344K P95 revealed instability right away. I run x264 second and that hasn't revealed any instabilities for my 4770k yet after the P95.
post #11033 of 19539
so what are the exact settings for prime i should try? and is the prime95 2.7 version ok
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post #11034 of 19539
Quote:
Originally Posted by thrgk View Post

so what are the exact settings for prime i should try? and is the prime95 2.7 version ok

Any 27.9 or later. In advanced options check roundoff and sum(inputs)
Choose custom and set min and max FFT size to 1344

Updated x264 downloads are a a few pages back.

Read the guide at the beginning of this thread,
Edited by GeneO - 3/13/14 at 8:10pm
post #11035 of 19539
Quote:
Originally Posted by GeneO View Post

Any 27.9 or later. In advanced options check roundoff and sum(inputs)
Choose custom and set min and max FFT size to 1344

Updated x264 downloads are a a few pages back.

Read the guide at the beginning of this thread,

You don't need to check those two options in Prime, they are automatically applied when running the torture test. I verified that with the author a year or so ago.
post #11036 of 19539
Quote:
Originally Posted by Forceman View Post

You don't need to check those two options in Prime, they are automatically applied when running the torture test. I verified that with the author a year or so ago.

Interesting, then why are they there (I only use this for torture testing)?

And here is your confirmation LOL

http://www.mersenneforum.org/showthread.php?t=17718&highlight=SUM%28INPUTS%29
Edited by GeneO - 3/13/14 at 9:05pm
post #11037 of 19539
only 1344kb for max and min? seems low for 16gb of ram.
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post #11038 of 19539
It appears to be an FFT size that quickly reveals instabilities for whatever reason.

P95 small FFT (8k) are stressful, especially temperature-wise, as they run out of the processor cache. They don;t seem to unveil instabilities like the 1344k do. And the 1344K test doesn't result in as high of temperatures as the small FFT, so it makes for a good, quick, low impact stability test.
Edited by GeneO - 3/13/14 at 9:16pm
post #11039 of 19539
Quote:
Originally Posted by GeneO View Post

Interesting, then why are they there (I only use this for torture testing)?

Extra tests you can use if you are actually searching for primes, I guess. I wonder how many people actually use Prime95 for finding primes, as opposed to just stress testing.
post #11040 of 19539
Quote:
Originally Posted by GeneO View Post

Interesting, then why are they there (I only use this for torture testing)?

And here is your confirmation LOL

http://www.mersenneforum.org/showthread.php?t=17718&highlight=SUM%28INPUTS%29
Because duh, Prime95 was not meant as or mainly a torture test program. Prime95 is a distributed computing client.
Quote:
Originally Posted by Forceman View Post

Extra tests you can use if you are actually searching for primes, I guess. I wonder how many people actually use Prime95 for finding primes, as opposed to just stress testing.

Google and a little clicking will reveal that.

EDIT: Fun fact, GIMPS(with Prime95 as computing client) was the first ever distributed compute project, even before BOINC/@home projects.
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