but I see only now that stress test temp is wrong: temps were always rising over 65° for cpu, and 80° for VCORE-1, so I stopped the test at once to avoid damage.
^ This, I use IBT AVX as a stress test tool, same results in less time without added stress on your CPU, plus Prime95 does not play nice with AMD CPU's, for example my rig at STOCK throws up errors, failed cores etc etc within 5 minutes whereas IBT I can crank out 50+ runs on the highest setting I can go no sweat.
LinX is another great stresstester with both IBT an Linx using the same Linpack libraries it all comes down to personal taste.
OCCT is also good as well as it's more fully featured than both IBT and LinX (PSU stresstester anyone?)
my cooler is mounted 90% well, (not 100% because I'm noob: heatsink was sliding like soap on thermal paste while I was tightening the screws)
Environment temp: just fine, 25°C
Idle temp: 38°C
Gaming temp: 45°C
Max Load temp: 64*C
Stress test max: Prime95, 64°C
Stress testing with Prime95: stress level normal, in 30 minutes, temperature was raising to 64°C then downto 61°C, then again to 64°C, then again to 61°C and so on... The reason is a mistery to me.
Stress testing with AMD Overdrive: in 15 minutes, stess test temp fluctuated between 61°C and 62°C
I use ASUS Suite II software to read temperatures. Usually this software send red warnings when temp is above 65°C
I think it is pretty good for air cooling this CPU.
A good rule of thumb when stress testing is to only have 1 monitoring program open at the one time as multiple programs can conflict and give you inaccurate readings, and close all programs bar the testing and monitor (downloads, interwebz, audio/video etc etc.) so as not to use unnecessary CPU cycles resulting in skewed results.
Gotta pull your card on this one. Unless your stress testing with super-pi you are not only unstable at those speeds but aren't hitting those temps at load with that cooler.
