Once I've found stability that lasts 1 or 2 hours, I test for 4 to 6 hours. This suggests some small adjustments, and noticeable increases in time-without-error after such adjustments are telltale. In the process of over-clocking, it is useful to find the settings that will fail within 10 or 20 minutes. It will also stress your processor more than PRIME95. IntelBurnTest - or Linpack or LinX - will find instability in a much shorter period of time. So most people who use PRIME95 exclusively advise stability testing for 12 hours or longer. ![]() ![]() I have seen PRIME95 fail after 9 hours, thus requiring a very slight increase in VCORE voltage or RAM (voltage/latencies) to eliminate the instability that caused it. This logic applies for longer and longer time periods. If it passes one hour without error, the probability of its going 2 hours is higher. Chucking quantitative notions for a moment as opposed to relative ones - if your system passes PRIME95 10 minutes without error, the probability of its going to 20 minutes is higher. Generally - nobody has challenged my speculations much here - it would seem that errors under stress-testing programs are Poisson-distributed. This "Stasio" fella has seemingly done a great job in taking the old LinPack IntelBurnTest and putting it into a very clean and informative windows interface. I'm often mildly impressed with Russian programmers.
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