MY bad 4770K's VID is 1.05v.
Can keep using this VID up to 4.1GHz, which is supposed to perform equal to a 3770K @ 4.3-4.4GHz.

bro , u need to use the latest CPU-z to see the real Vcore *CPU-z 1.64.3

I use the custom blend....but it runs few hours withour crash..but IBT...no luck....lol...

Hahaa...ya , feel the new tech......if its FB i would hav click "like" ...lol
Awaiting some expert giv advise on Asrock features ....really confuse of the new oc setting.

not sure ure board can do this but set cpu voltage and cpu cache ring voltage manual.
the rest leave it at offset mode.

this way u get the full c-states.
its pretty awesome watching ure proc at idle at 0.00v. lol
killed any??
no chance to test the gaygay yesterday as the proc i put it kindda sux on voltage/imc everything imaginable. vcore at 1.2v 4.2ghz barely passed.

Good thing is that your 4670K, have quite same temperature per core, in idle and load.

Better then normal.......mostly one (or 2) core are offset 10+... C.

Your A-Tuning report CPU Voltage 1.726V ? 

Some noob question. I oc-ed my i5 to 4.5ghz at 1.2v. When I stress test using msi's tool its stable but prime95 not stable. Is my voltage not enough?

Theres 4 ways to clock
Fully manual
Adaptive
Offset
SVID

adaptive issue is the vcore can be more than what u set.
So far seems manual on vcore n ring bus with offset on vcssa/cpu io d/a is the best. Fully c-state.

I tried again with the same settings for prime95. If more than 15min bsod appears. Ram settings at auto.

Let me guess.

Your main win7 is Service Pack 1 (SP1)
fresh win7 is vanilla (none-SP1)

SP1 has AVX instruction which vanilla doesn't.

Caveat – big, massive, honking, pay attention to this – caveat! When using adaptive voltage, the top of the curve isn’t necessarily the whole story. ASUS drove this point home when we met and I’m doing so now; we all need to do this as a public service to our users and readers. Even though you set 1.25 V as your maximum voltage, under certain very heavy loading conditions (i.e. stress testing), the voltage can and will exceed the maximum you have set. Let me say that again – if you stress test using adaptive voltage, even with the maximum set to 1.25 V, the CPU will – guaranteed – request and receive more voltage than you have told the motherboard to deliver it. It’s just the way this works.

In the ASUS demonstrations, setting a maximum 1.25 V in this scenario and then running something like AIDA64, Prime95, etc – any stress testing application designed to stress more than normal loads – the CPU requests and gets ~1.36 V. There is nothing you can do about this and it will happen whether you want it to or not. The only way to prevent stress testing programs from pulling extra voltage is to use a manually set voltage, which takes away your CPU’s ability to reduce voltage when idle.

All is not lost though! You probably noticed every time I told you what would happen it went hand in hand with stress testing. That’s because those are the only scenarios that will lead to this behavior. In all other circumstances so far as ASUS can tell, the CPU will cap at the set 1.25 V and never exceed it. Even if you’re Folding@Home it should maintain the 1.25 V cap (though those folding at home are under 100% load all the time and I’d suggest using a manual voltage for those machines just in case). Likewise, video encoding, audio encoding, compression, rendering – any CPU-intensive process, your CPU will maintain the 1.25 V cap.

So, now that you know the very important caveat, set 1.25 V as your maximum voltage with adaptive voltage, enable C1E and EIST (which throttle your multiplier and voltage when not under load) and go on with your merry life knowing your CPU is as relaxed as it can get when idle.

Theres 4 ways to clock
Fully manual
Adaptive
Offset
SVID

adaptive issue is the vcore can be more than what u set.
So far seems manual on vcore n ring bus with offset on vcssa/cpu io d/a is the best. Fully c-state.

alright looks like we have a version of LinX working for Haswell on win7 SP1 (not Win8)

Credit to acebmxer @ XS

OMG, bad news guys.
LinX 0.6.4 (10.3.7) is actually stressing more than I thought.
Now 4.6GHz @ 1.44v will hit TJmax of 100C instantly.
Now i have to reduce overclock to 4.4GHz @ 1.375v in order to avoid from overheating. 
So, from now onwards I will not use Prime95 27.9 for stability check anymore because it is not ready for Haswell thus not as stressful as LinX.

yupe thats under water.
Prime95 needs some updates for Haswell. Normally I would trust LinX or IBT only since it tell us the GFlops which shows the efficiency and accuracy of our overclocks. Eg.

4.5GHz @ 1.25v - 125 GFlops, 85C
4.5GHz @ 1.3v - 135 GFlops, 90C

The higher the  GFlops, the more performance the overclock yield. So, 1.3v is picked as our preferred vCore.

That was on win7 SP1 with AVX instruction AND LinX with AVX libraries build 10.3.7.

On win7 non SP1 OR LinX non AVX, you would get:

4.5GHz @ 1.15v - 60 GFlops, 60C

lower GFlops and reduced performance of AVX supported apps and might sometimes get BSOD on routine works.

Thats why I said the hotter or the more vCore needed, the more stressful the app. Also, the more vdroop (lower load vCore) the more stressful.

Anyway, to choose whatever stress app is really up to you.

I even saw an OCN forummer advised fellows not to use AVX based stability tool because it doesnt represent daily routine work lol.

Another forumer from XS told me that if you could finish the Fritz Chess benchmark then your overclock should run fine on any game without stability issue.

Read one of my reply y owikh does the stress test. He needs a confirm vcore for that 4.6ghz because of all the custom mem clocking.

Ran Linx last night for 30mins. i5 at 4.4ghz, 1.15v. Gflops was at 119 and max temp was 92C. At 1.17v, Gflops was at 121 and temp at 95C.

Really not sure about asrock. But u can see on my screen shot.
My CPU is on Manual ( not sure why it says ring bus is manual but its actually on auto)
The rest VCSSA/CPU Digital/Analogue i/o is offset.

this is the best.
adaptive is totally not recommended for haswell because of the heat

adaptive is like setting a offset based on ure vid for the multiplier and then giving more for turbo. something like that.

checking for ure mobo bios screenshot.