How to optimal overclock my i5 4670k with Noctua NH-D14?

BrainY · Nov 17, 2014

CASE: Rosewill Challenger (3 Rosewill Case Fans @ 75CFM)
CPU: Intel Core i5 4670K Haswell @ 3.40GHz with Noctua NH-D14
MOBO: ASRock Z87 Extreme4
GPU: EVGA GTX 760 SC (2GB)
RAM: 4 x G.Skill 2GB DRR3 1333mhz (PC3 10600)
HDD: Samsung Spinpoint F3 500GB 7200RPM 16Mb 3GB/s
PSU: OCZ ModXStream Pro 600W
MONITOR: VS238H-P Black 23" 2ms @ 1080p 60hz

I've messed around with the default settings with my motherboard and read a couple posts on tomshardware, but still haven't figured out what the best thing is to do.... What would be the best beginner's guide? I've used the default settings of my motherboard and used 4.0ghz and my PC seemed to run fine. You are always welcome to post what you think I should do and then what tests I have to run

Help is appreciated!

Tradesman1 · Nov 18, 2014

Might simply try setting CPU voltage to 1.2 and then see how high you can take the multiplier, can fine tune after that

iamlegend · Nov 18, 2014

I think you can go as far as 4.7~4.8 with Noctua NH14.

Start with stock voltage and then bump your CPU multiplier to 40, then test for system stability. If it crashes bump your voltage to 1.205 and then test again for stability, if it is not stable bump again your voltage to .005 increments (to be safe) until you get stability.

Tradesman1 · Nov 18, 2014

What you can get to depends on the individual CPU, some might hit 4.8 others won't get past 4.4, all depends on the luck of the draw in the one you get

nikoli707 · Nov 19, 2014

iamlegend :

after a delid you might get that high.

BrainY · Nov 19, 2014

iamlegend :

Soooo I only touch the multiplier and nothing else? What voltage do I touch when it crashes?

BrainY · Nov 19, 2014

In another post on this forum.. they said it was bad to do this. So I guess I'll follow the guides for 4.4Ghz

iamlegend · Nov 19, 2014

Bad to do what?

BrainY · Nov 19, 2014

Overclocking without touching the voltages would mean that you overclock Automatically which is a no go.

Auto Overclocks = Will 100% of the time overvolt your CPU Vcore this will result in too much Heat and is bad for your CPU.

The best way is manually set the voltages for your Vcore, input voltage, cache voltage and the multipliers. Check the guide on this thread first page, post #1.

As for NHD14 I am sure it can cool off 1.25 volts. My Cryorig R1 Ultimate easily cooled my old 4670K running at 4.6 GHz manual OC @1.262 volts. With very good temperatures 28 degree idle not going over 61 at full tilt.

But ye, never auto OC, always go for Manual OC its the best thing yet. Even the turbo boost the Intel chip does uses bad voltages, they put more volts than is needed.

nikoli707 · Nov 19, 2014

overclocking in the bios without initially touching voltages is the safest way to do it. the svid will automatically up the voltage for you. this is always the starting point, and you stress test for stability there. after you can confirm stability, in many cases you can then lower the vcore(0.05v, 0.10v, etc) and retest for stability. depending on how high the overclock is, the svid adjustment, and your silicon lottery, it is very likely you can at least be stable at 0.05v lower than svid. at a certain point, say 46x multiplier/ratio or higher, the serial vid will no longer supply enough voltage and you will need to manual adjust the vcore higher to attain stability.

the svid(serial vid) is what your chip is programed with at the factory and is a voltage curve along side frequency speed. it is normal and you should be watching vcore and noticing it go up also noting each vcore stepping in your head as well.

as long as your withing temperature range, the svid is not going to overvolt your chip. 0.10v or 0.15v is not deal breaker that is going to be "dangerous", again as long as your temps are looking good.

BrainY · Nov 19, 2014

This sound so simple but so hard for me!

So basically I should up my multiplier without touching anything else.
Test stability with prime95 for example
If not stable.. I up the voltage with 0.05V til it's stable?

BrainY · Nov 20, 2014

nikoli707 :

I took pics of my BIOS... So I would only have to change it to ALL CORE and 40? I don't touch anything else? If I want to stabilize it with changing voltages... Where do I change that? I don't see an option

http://i.imgur.com/aFKG1yx.jpg
http://i.imgur.com/drIV2gt.jpg

iamlegend · Nov 20, 2014

Yes let`s say now you have 38 multiplier, bump it into 39 and then check for stability.

If it is stable then bump again, let`s say 40 until you get an instability.
After this add voltage of .05 increment.

BrainY · Nov 21, 2014

I set the multiplier to 40 as shown in the pics above.

10 Runs of IntelBurnTest on HIGH stress
Max Temps 68-74 Celcius

10 Runs of IntelBurnTest on MAXIMUM stress (after high)
Max Temps 70-77 Celcius

I can go higher?

Tradesman1 · Nov 21, 2014

Yes, the max voltage recommended by most is 1.25 but can vary greatly - keep a close eye on your temps

BrainY · Nov 21, 2014

I dont even know where I can change this voltage.. My bios pics don't indicate anything about that xD

Tradesman1 · Nov 21, 2014

CPU voltage, might be called vCore

BrainY · Nov 21, 2014

Tradesman1 :

http://i.imgur.com/aFKG1yx.jpg
http://i.imgur.com/drIV2gt.jpg

Don't see it

Running BF4 @ max of 50degrees @ 4.0Ghz

How to optimal overclock my i5 4670k with Noctua NH-D14?

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