KnowAN0ah :
... im running an i7-4790k at stock everything including auto everything in the bios. ... and im getting an 88 degrees celsius at 100% load on IBT max stress with a noctua nh-d15. Is this a normal temp?
What is your ambient temperature?
Core voltage (Vcore) settings in “Auto” apply significantly more voltage than is necessary to maintain stability. Voltage translates into Power (Watts), which is dissipated as heat.
Here's the normal operating range for Core temperature:
80C
Hot (100% Load)
75C
Warm
70C
Warm (Heavy Load)
60C
Norm
50C
Norm (Medium Load)
40C
Norm
30C
Cool (Idle)
Also, there's a difference between
stability testing and
thermal testing.
IBT is runs Linpack, which is brutal. It's good for
stability testing, but not so much for
thermal testing.
Prime95 v26.6 Small FFT's is the preferred test because it's a
steady-state 100% workload. This is the test that Real Temp uses to test sensors. Prime95 version 26.6 is well suited to all Core i and Core 2 variants.
Prime95's default test, Blend, is a cyclic workload for testing memory stability, and Large FFT's combines CPU and memory tests. As such, Blend and Large FFT's both have cyclic workloads which are unsuitable for CPU thermal testing.
Other stability tests such as Linpack and Intel Burn Test have cycles that peak at 110% workload, which are also unsuitable for CPU thermal testing. The test utility OCCT runs elements of Linpack and Prime95.

Shown above from left to right: Small FFT's, Blend, Linpack and Intel Burn Test.
Note the
steady-state thermal signatures of Small FFT's, which allows accurate measurements of Core temperatures.

Shown above from left to right: Small FFT's, Intel Extreme Tuning Utility CPU Test, and AIDA64 CPU Test.
The "Charts" in SpeedFan span 13 minutes, and show how each test creates different thermal signatures. Intel Extreme Tuning Utility is also a cyclic workload. Although AIDA64's CPU test is steady-state, the workload is well below Thermal Design Power (TDP), which is insufficient.
If you already have a later version of Prime95, do NOT run it. Here's why:
Core i 2nd, 3rd, 4th and 5th Generation CPU's have AVX (Advanced Vector Extension) instruction sets. Recent versions of Prime95, such as 28.5, run AVX code on the Floating Point Unit (FPU) math coprocessor, which produces
extremely high temperatures. The FPU test in the test utility AIDA64 shows similar results.
Prime95 v26.6 produces temperatures on 3rd, 4th and 5th Generation processors more consistent with 2nd Generation, which also have AVX instructions, but do not suffer from thermal extremes due to having a soldered Integrated Heat Spreader and a significantly larger Die.
Please download
Prime95 version 26.6 -
http://windows-downloads-center.blogspot.com/2011/04/prime95-266.html
Run only Small FFT’s for 10 minutes.
Use Real Temp to measure your Core temperatures, as it was developed specifically for Intel processors: Real Temp - http://www.techpowerup.com/downloads/2089/real-temp-3-70/
Your Core temperatures will test 10 to 20C lower with v26.6 than with v28.5.
Please read this Tom’s Sticky:
Intel Temperature Guide -
http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html
CT