i5 6600k overclocking with prime95 and Intel Extreme Tuning Utility also includes a limp core
i5 6600k overclocking with prime95 and Intel Extreme Tuning Utility also includes a limp core
So I've had the 6600k for a few days and been messing around with it to find its potential.
normally on my 6400 it would tell me from the get-go on boot up if the overclock is no good.
right now i havent had any problems booting up.
ive gone to 4.8ghz but no tests or anything.. just was playing around to see if it actually would boot. i didnt want to run tests on it yet because i knew the temperatures were already high at 4.6-4.7 and didnt want a crispy 6600k just yet.
im finding prime95 failing on last core within a few mins at 4.5ghz
and at 4.6-4.7 it pretty much fails in seconds.
ive played around with the voltage and gotten up to 1.35vcore, with that i was peaking at 92c-95c
that point i just shut it down.
what im basically looking for is to confirm that the chip is able to run past 4.5 but i have a core thats limped. Ive done some searching and it seems like a common event to have so what is the solution if there is?
drop the multiplier on that core to 45 (x100) or until it stops crapping out?
or run as is and see if the other cores fail?
or... run different types of tests?
ive been using intel extreme tuning for bench and tests also and it seems more forgiving than prime95. but i have crashed before and bumped up my vcore and it became stable so i know its able to determine the threshold.
mild pc bench:
http://www.userbenchmark.com/UserRun/2270716
hwinfo on bench:http://imgur.com/a/GcCWz
L0stChild, Avoid using Prime95 versions older than 26.6 on Core i2, i3, i5 or i7 processors with AVX support. Newer releases like 28.9 execute AVX instructions directly in the CPU's FPU, leading to excessive temperatures—up to 20°C higher. The AIDA64 test confirms these findings. Download Prime95 version 26.6 from the provided link. Limit FFT operations to ten minutes. Monitor core temperatures via Core Temp at http://www.alcpu.com/CoreTemp. Expect lower readings with v26.6, potentially resolving single-core overheating issues. Also, check the Intel Temperature Guide at for more details.
CompuTronix: L0stChild, Avoid using Prime95 versions older than 26.6 on Core i2, i3, i5 or i7 processors with AVX support. Newer Prime95 releases like 28.9 execute AVX instructions directly in the CPU's Floating Point Unit (FPU), leading to excessively high temperatures—up to 20°C higher. AIDA64 testing confirms these findings. Please download Prime95 version 26.6 from the provided link. Run only brief FFT operations for ten minutes. Monitor your temperatures using Core Temp at http://www.alcpu.com/CoreTemp. With v26.6, your CPU temps should drop up to 20°C, potentially eliminating single-core issues. Also, check the Intel Temperature Guide at for more details. CT Thanks! I appreciate it!