First overclock - 4770K

Gimpymoo

Gimpymoo

Gimpymoo

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Any feedback welcome.

4770K on a Gigabyte Z87X UD4H.

Most likely will be using a Noctua NH-D15.

Increase multiplier, increase voltage till stable? (Not literally, but in a nutshell?)

I read that adaptive voltage should be turned off, regardless how good the board is, is it best to keep it off?

I am running 16GB (4x4GB).
XMS3 — 8GB (2x4GB) DDR3 1600MHz C9 Memory Kit (CMX8GX3M2A1600C9)

9-9-9-24

What are best/worse case scenarios for an overclock? Any way of checking batch number of processor to have a clue?

Many thanks.
 
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That voltage does seem a bit high for just 4.3... then again I'm on the 4790k. I'd suggest that you try and squeeze a bit more clock speed from it at the current voltage. There are some other things you can mess with, but it's been an awful long time since I actually OCed my CPU so I can't remember what settings they were. Those temperatures aren't bad, but 50 degrees at idle does seem a bit high and I'm on the same cooler. It's been good sunny weather today and I'm in the mid 30s on my CPU cores at this moment. Granted I've a ton of case fans... the load temps by comparison seem very good though. I remember my cores go range from 70 to 80 at load.
 
I have a Fractal R4 with only 1 intake fan.

That thing is very "sealed" in all honesty and I could do with another intake.
 
Did you use the nocturna?

Does seem like a low clock speed for the given voltage. Have you tried reducing voltage to see if it's stable?
 
Brazo said:
Did you use the nocturna?

Does seem like a low clock speed for the given voltage. Have you tried reducing voltage to see if it's stable?
Click to expand...

Yes, the updated NH-D15S though.

Would adding a second fan to the Noctua make much of a difference? I have one sat next to me not being used but not bothered about installing if does not offer that much extra cooling.

One thing I am noticing is that the multiplier and voltage are "locked".

before overclocking, Windows would underclock the CPU and reduce voltage as needed. Can I still do that with an overclock? It seems I need an "adaptive" overclock?
 
OK..

I let the motherboard take care with an "automatic" overclock and I am currently on 4.5Ghz at 1.3v and max temps of 80 degrees.

I am going to add a second fan to the NH-D15S, will see what happens to temps.

How do I allow the overclock to be variable depending on resources needed so not running at 1.3v and 4.5Ghz when idle on desktop?
 
yes add the second fan.

Your multiplier and voltage should not be locked?

There is a really good Haswell overclocking guide on the net - there's two in fact, ones the 3 easy steps and the other designed for Z87 boards. Either way adaptive voltage is not necessary for Haswell - although opinions do of course differ.
 
What I mean is, at stock, in Windows, the speed and voltage adjust dynamically so when idle, system uses less power thus outputs less heat.

When overclocked, everything stays "locked" to 4.5Ghz and 1.3v if that makes sense?
 
Sounds pretty good. You'll want to keep the voltage under 1.3v as the temp starts to skyrocket at that point. Keep going with the clock speed until a massive voltage bump is needed for stability, then back down one multiplier and tune for stability.
 
Gimpymoo said:
1.25v @ 4.5Ghz stable.

35 degrees idle.

Any good?
Click to expand...

What's load temps at that speed like?
Back when I was on air & running similar volts/speed mine were between 65-70c when gaming.

An AIO dropped that to around 60c, & now on a custom loop I'm around 45c with 1.28v 4.6ghz

Managed 4.8ghz but needs 1.38v to be stable.
 
Seems I need 1.3v for stable 4.5Ghz overclock.

Is this too much?

System is on 24x7.

Idle and max temps seem to stay the same at stock or overclock.

With the overclock, the multiplier is "locked" when idling in Windows. When at stock, Windows manages the multiplier so using less power/lower temps.
 
I use 1.25v @ 4.4Ghz and have done for years.

Your idle temps will be at low voltage so won't differ. I run in the 60's in games and that's where you'll get problems with a) your cooling and b) eeking out every last Mhz.
 
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