i770K Prime 95 Temps HIGH

whitesox1995

Reputable
Apr 23, 2014
34
0
4,530
i ran prime 95 and my temps hit 98 (all cores were in the 90's) but i do have it O.C. to 4.4 and the voltage is at 1.6, so should i be worried? i have a noctua NH-D14
 
Solution
Prime 95 is very demanding and especially with an OC and an air cooler, despite it being pretty much the best air cooler, you will hit those high temperatures, so I wouldn't be worried. What are your idle temperatures at?

Whammy

Honorable
Dec 31, 2013
489
0
10,960
Prime 95 is very demanding and especially with an OC and an air cooler, despite it being pretty much the best air cooler, you will hit those high temperatures, so I wouldn't be worried. What are your idle temperatures at?
 
Solution
Do you mean 4770k or 3770k ?

Is it the AVX equipped Prime 95 or the older non AVX versions

Here's the typical max voltage recommendations for Haswell from MoBo manufacturers

< 1.15 = Stock Cooler

1.15-1.20V = Hyper 212 or equivalent

1.20V-1.23V = Big 3 Air Cooler (Phanteks PH-TC14-PE, Therm,alright Silver Arrow, Nocua DH-14) or 240/280 AIO (i.e. Corsair H110)

> 1.24V dual or triple radiator water cooling solutions are advised.

Max recommended voltage = 1.35

I'll push it to 1.375 .... but watch out about mixing Adaptive / Offset Modes with AVX instructions .... from Asus

As an example, a CPU is perfectly stable at 1.25V using a manual voltage (static), if Adaptive or Offset Mode is used instead, it is impossible to lock the core voltage when running software that contains AVX instruction sets – stress tests such as AIDA and Prime contain AVX instruction sets. When the AVX instructions are detected by the PCU, the core voltage will be ramped an additional ~0.1V over your target voltage – so 1.25V will become ~1.35V under AVX load. If you intend to run heavy load AVX software, we recommend using Manual Vcore, NOT Adaptive or Offset Mode.

Most of us do not run AVX related software, so this is a non-issue. Either way, dialing in an overclock using Manual Vcore to determine how much voltage the processor needs under full load is best - Adaptive or Offset mode can be used to match the stable voltage later on. Simply type the target load voltage into the entry box "Additional Turbo Mode CPU core voltage" to set adaptive voltage.