My i5 6600k doesn’t get very hot when I Overclock ... Under full load of a benchmark (aida 64) my cpu never goes above 45C ...
"Full load" is a popular but
non-specific user term, so if you want to compare apples to apples, then it's important to be
very specific.
• The definition of "full load" is a steady-state 100% TDP workload.
AIDA64 has 4 CPU related stress test selections which have
15 possible combinations that yield
15 different Core temperatures. That's a lot of variables. Any meaningful comparisons always account for, minimize or eliminate as many variables as possible so results will be consistent and repeatable.
You probably ran just the individual CPU test, which is less than a 70% workload, and would explain why your i5-6600K "doesn't get very hot".
If you want to understand this topic and get yourself up to speed, there's a "Sticky" near the top of the CPUs Forum you can read:
Intel Temperature Guide. If you just look, you can't miss it.
“Stress” tests vary widely and can be characterized into two categories;
stability tests which are
fluctuating workloads, and
thermal tests which are
steady workloads. Prime95 v29.8 Small FFT's
(all AVX test selections disabled) is ideally suited for testing thermal performance, because it conforms to Intel's Datasheets as a
steady-state 100% TDP workload with
steady Core temperatures. No other utility can so closely replicate Intel's thermal test workload.
Utilities that don't
overload or
underload your processor will give you a valid thermal baseline. Here’s a comparison of utilities grouped as
thermal and
stability tests according to % of TDP, averaged across six processor Generations at stock settings rounded to the nearest 5%:
Although these tests range from
70% to 130% TDP workload, Windows Task Manager interprets every test as
100% CPU Utilization, which is processor resource activity,
not actual workload.
Core temperatures respond directly to Power consumption (Watts), which is driven by workload. Prime95 v29.8 Small FFT’s
(all AVX test selections disabled) provides a
steady-state 100% workload, even when TDP is exceeded by overclocking. If Core temperatures don't exceed
80°C, your CPU should run the most demanding
real-world workloads without overheating.
... In idle, it is 20-30C ...
All computer temperatures, whether load or idle, are relative to ambient (room) temperature.
(
Q): What is your ambient temperature?
Also, one user's "idle" is another user's "light load", so again, if you want to compare apples to apples, then it's important to be very specific.
• The definition of "idle" is minimum activity at 1% CPU Utilization in Windows Task Manager.
This means your computer is in an
undisturbed state with no streaming or programs or screensaver running, off line, and no Dropbox or Folding or SETI or "tray-trash" running in the background.
(
Q): Is your rig really at "idle"?
What exact cooler are you using? hopefully not a stock cooler ...
Beginning with 6th Generation, "K" processors do
not include Intel's specified 130 Watt TDP stock cooler; it's instead sold separately:
Intel Stock Coolers
CT
Facebook
Twitter
Instagram