i5-4590k running too hot on bios preset overclock.

Samantha1968 · 5 May 2015 at 14:43

i been trying the default overclocking available on this processor i5-4690K and motherboard the gigabyte Z97x-SLI.

i set it to 60% and got 4.5ghz and was stable but i found under a prime95 torture test that the temperature kept increasing.

it got very hot at 97 degrees Celsius .

now from running old system i find that very hot. what is the best temperature range for these new processors. it runs from 25 to 35 at stock with just normal stock speed 3.5 to 3.9 turbo range.

i have never tried overclocking the i5 before as this is my first time using a new processor. last time i overclocked was on the old lga775.

is there a good guide to overclocking this particular model and the gigabyte motherboard. as said it was stable but go very hot. the cooler used is the following.

Raijintek EreBoss High performance CPU Cooler UI=6588599

this test overclocking was done using preset bios settings.

Samantha1968 · 5 May 2015 at 14:48

Raijintek EreBoss High performance CPU Cooler UI=6588599

MrMD · 5 May 2015 at 14:55

Bios preset overclocking is not advised as its usually extremely liberal with upping the vcore to stupid levels,thus producing massive amounts of heat.

You want to manualy apply your overclock settings in the bios.

A 4690k should be able to get 4.5 at a vcore of around 1.3 or less..The odds are the bios preset is applying a vocre of around 1.35/1.4 which is a dangerous voltage to use on air cooling.

Edit: For these CPU's you dont really want to exceeding 80c in day-to day usage.Its fine going slightly over that for shorter periods when stress testing tho.

At 95C your CPU will throttle back the clock speeds as protection measure

Samantha1968 · 5 May 2015 at 15:26

MrMD said:
Bios preset overclocking is not advised as its usually extremely liberal with upping the vcore to stupid levels,thus producing massive amounts of heat.

You want to manualy apply your overclock settings in the bios.

A 4690k should be able to get 4.5 at a vcore of around 1.3 or less..The odds are the bios preset is applying a vocre of around 1.35/1.4 which is a dangerous voltage to use on air cooling.

Edit: For these CPU's you dont really want to exceeding 80c in day-to day usage.Its fine going slightly over that for shorter periods when stress testing tho.

At 95C your CPU will throttle back the clock speeds as protection measure

thank you. i will continue reading of manual tuning and run some small incremental tests to see what i can get. first i will search for a good overclocking guide to this processor thank you and will post further when i have tried manual tuning.

MrMD · 5 May 2015 at 15:30

Give this a read

http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics

Explains everything you need to know

Samantha1968 · 5 May 2015 at 16:13

MrMD said:
Give this a read

http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics

Explains everything you need to know

thank you will give it a good read as even trying just to raise multiplier to 41 4.1ghz overheats. i may have a issue with cooler as it should be able to reach 4.5 without overheating.

MrMD · 5 May 2015 at 16:21

A few things

1.Check what revision your bios is(Should say some where on the main menu)Z97 boards at launch had dodgy bios's that applied too much Vcore,as its a recent build your board should have a newer fixed bios,worth double checking this tho.

2.Dont use Prime95,it uses AVX instruction set that force extra voltage into the cpu above the bios set vcore.Use real bench instead http://rog.asus.com/file/?download=RealBench_v2.4.zip

3.Make sure you select manual input when changing the vcore in the bios,dont leave it on auto/adaptive.

Samantha1968 · 7 May 2015 at 16:36

i set uncore to 35 not auto and set turbo to 45 and now i get a nice 4.5ghz at 29 to 32 degrees. it runs at 4.5 constantly. set each core to 45 multiplier and enabled turbo boost mode. rest i left alone. As i only have a EreBoss Air cooler and dont want to overheat it.

under prime torture test it goes up to 68 degrees. stays there for some time but then creeps up 1 degree at a time. 88 degrees after 30 minutes torture test. with case fans on minimal 3 x 200mm. if case fans increased it starts to drop in temperature. its as if the cpu fan is not enough to cool block ?

temp drops down to 73 degrees for awhile then fluctuates by 2 or 3 degrees up and down.

1.2333 volts. to 1.238 volts

so not sure why cpu cooler is not handling this as it should be capable. temp also spikes at some points back to 88 degrees and even a spike to 97 degrees just for a moment.

i am lost to what could be the cause of overheating

bios is version F7 latest. took multipliers of auto.

so i really dont know what could be wrong as this is a new rig , prebuilt by ocuk.