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i7-6800k OC

andy0842
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hi guys

i just bought my brand spaaanking new pc with i7-6800k and a gtx 1080 founders edition on x99 itx board.

I have the noctuaa cooler with 2x 92mm fans on and Corsair 550W PSU.

 

So here's the problem. I'm new to the overclocking CPU. I know how to OC GPU but not CPU.

first in ASRock's A-Tuning software, i watched it going up to 4.2GHz

So after watching that i go in to bios and set the cpu ratio to 42 with BCLK @ 100.0 and CPU I/O voltage at 1.200V.

It successfully boots but when i stress test with Prime95 or AIDA64, the clock speed goes down to 3.4GHz...

 

Any idea why this is happening?

CPU i7-6800K @ 4.4 GHz MOBO ASROCK X99E-ITX/AC GPU GTX 1080 FE RAM Corsair 32GB LPX Cooler Noctua NH-U9DXi4 Storage Samsung 512GB 950 Pro + 1.5TB HDD PSU Corsair CX650M Display Acer X34 Peripherals K70 LUX RGB MX RED, G502 Spectrum, Sennheiser Momentum Over-Ear, & Razer Seiren Microphone

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36 minutes ago, andy0842 said:

hi guys

i just bought my brand spaaanking new pc with i7-6800k and a gtx 1080 founders edition on x99 itx board.

I have the noctuaa cooler with 2x 92mm fans on and Corsair 550W PSU.

 

So here's the problem. I'm new to the overclocking CPU. I know how to OC GPU but not CPU.

first in ASRock's A-Tuning software, i watched it going up to 4.2GHz

So after watching that i go in to bios and set the cpu ratio to 42 with BCLK @ 100.0 and CPU I/O voltage at 1.200V.

It successfully boots but when i stress test with Prime95 or AIDA64, the clock speed goes down to 3.4GHz...

 

Any idea why this is happening?

What are the cpu temps? 

Rig Specs:

AMD Threadripper 5990WX@4.8Ghz

Asus Zenith III Extreme

Asrock OC Formula 7970XTX Quadfire

G.Skill Ripheartout X OC 7000Mhz C28 DDR5 4X16GB  

Super Flower Power Leadex 2000W Psu's X2

Harrynowl's 775/771 OC and mod guide: http://linustechtips.com/main/topic/232325-lga775-core2duo-core2quad-overclocking-guide/ http://linustechtips.com/main/topic/365998-mod-lga771-to-lga775-cpu-modification-tutorial/

ProKoN haswell/DC OC guide: http://linustechtips.com/main/topic/41234-intel-haswell-4670k-4770k-overclocking-guide/

 

"desperate for just a bit more money to watercool, the titan x would be thankful" Carter -2016

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8 hours ago, Jumper118 said:

What are the cpu temps? 

like 45C? it's not going up any higher than 48C

I know it's not the temperature that is the problem.

on CPU-Z it shows 4.2GHz on all cores, but as soon as i click start on aida64 or prime95

the clock speed goes down to 3.4ghz for some reasons

CPU i7-6800K @ 4.4 GHz MOBO ASROCK X99E-ITX/AC GPU GTX 1080 FE RAM Corsair 32GB LPX Cooler Noctua NH-U9DXi4 Storage Samsung 512GB 950 Pro + 1.5TB HDD PSU Corsair CX650M Display Acer X34 Peripherals K70 LUX RGB MX RED, G502 Spectrum, Sennheiser Momentum Over-Ear, & Razer Seiren Microphone

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3 hours ago, andy0842 said:

like 45C? it's not going up any higher than 48C

I know it's not the temperature that is the problem.

on CPU-Z it shows 4.2GHz on all cores, but as soon as i click start on aida64 or prime95

the clock speed goes down to 3.4ghz for some reasons

That is very strange are you running the latest bios.  I wonder if it's a bug

Rig Specs:

AMD Threadripper 5990WX@4.8Ghz

Asus Zenith III Extreme

Asrock OC Formula 7970XTX Quadfire

G.Skill Ripheartout X OC 7000Mhz C28 DDR5 4X16GB  

Super Flower Power Leadex 2000W Psu's X2

Harrynowl's 775/771 OC and mod guide: http://linustechtips.com/main/topic/232325-lga775-core2duo-core2quad-overclocking-guide/ http://linustechtips.com/main/topic/365998-mod-lga771-to-lga775-cpu-modification-tutorial/

ProKoN haswell/DC OC guide: http://linustechtips.com/main/topic/41234-intel-haswell-4670k-4770k-overclocking-guide/

 

"desperate for just a bit more money to watercool, the titan x would be thankful" Carter -2016

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i downloaded the latest bios version from asrock's official website just yesterday and updated it

CPU i7-6800K @ 4.4 GHz MOBO ASROCK X99E-ITX/AC GPU GTX 1080 FE RAM Corsair 32GB LPX Cooler Noctua NH-U9DXi4 Storage Samsung 512GB 950 Pro + 1.5TB HDD PSU Corsair CX650M Display Acer X34 Peripherals K70 LUX RGB MX RED, G502 Spectrum, Sennheiser Momentum Over-Ear, & Razer Seiren Microphone

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