Hi all sifu, this is my first oc on 4570K and Asus Z87M-Plus and I've read many guides.

One of the guide on first post [OCers] 3 Step Guide to Overclock Your i7 / i5 Haswell Platform caught my attention on how to check whether the chip I have is on the upper end or the lower end of the Haswell bell curve. Quote from the author:-
My Haswell cant boot past 4.3GHz on 1.25V manual. Heck it cant even boot past 4.2GHz when I set the voltage setting to adaptive or offset. My questions are:-

1) Does high performance RAM increase the oc capability of the CPU? I am using normal RAM only.
2) Does good cooler increase the oc capability of the CPU? I am using stock cooler.

Stick to 4.0GHz for now with stock cooler, 90C on full load. Well, for normal gaming my CPU just 60-70C so I might not want to invest on new cooler if my CPU cant go beyond 4.3GHz.

Thanks in advance for your advice.

I have no comment on how good is your chip bro since I have never played with a 4570K before.
So far having some 4770K average chip is 4.5GHz @ 1.25v LinX stable. A golden CPU is doing as low as 1.2v at the same frequency.
Try playing with Load-line calibration in Digi+VRM option. It will control the way your CPU's idle/load vCore.

1) High performance RAM doesn't help CPU overclocking. Just that the higher RAM speed, the more stress the integrated memory controller (IMC) will get hence the more voltages you will have to pump to the processor to stabilize it.

2) The lower the temperature, the lower the vCore needed hence overclock ability is improved.

Get a better cooler bro for better overclocking. Stock cooler won't go that far 

I have no comment on how good is your chip bro since I have never played with a 4570K before.
So far having some 4770K average chip is 4.5GHz @ 1.25v LinX stable. A golden CPU is doing as low as 1.2v at the same frequency.
Try playing with Load-line calibration in Digi+VRM option. It will control the way your CPU's idle/load vCore.

1) High performance RAM doesn't help CPU overclocking. Just that the higher RAM speed, the more stress the integrated memory controller (IMC) will get hence the more voltages you will have to pump to the processor to stabilize it.

2) The lower the temperature, the lower the vCore needed hence overclock ability is improved.

Get a better cooler bro for better overclocking. Stock cooler won't go that far 

Which cooler?  Last time my cpu stopped working completely for good.So now it is open air (no cover). Pity because the cover is fancy type.

Pls ignore my CPU core/uncore/GPU clocks when I'm overclocking the RAM.
Nope, I'm on still 0401
I saw 0403 and 0039 were released yesterday 
I got 0038s for media only to be tested later today.

no such 0039 BIOS and it is not downloadable via the link on hwbot
0038 is the latest for now

DDR-4404 on M6I
http://valid.canardpc.com/show_oc.php?id=2884680

Yesterday, five Penang overclockers - kelvinchen, ktek, AceCombat, owikh84 and [Lai] had organized a 12-hour gathering at Swisspac Resources S/B.



So we took some mobos and RAMs for a spin under water. One of the OC results are:

Team Xtreem 2666C11 (Hynix-MFR) @ 3466MHz 12-16-15-35-1T @ 1.955v on ASUS Maximus VI Impact | CPU water / RAM air



Overall, the gathering was so exciting and enjoyable as we could share with each other our knowledge in overclocking. Hope to see you guys again in near future.   

Samsung is sweet  pushed it higher thanks to great scaling with voltage

2870MHz 9-12-12-21-1T



Best score from PSC kit at 2600:

2600 8-12-8-28-1T


Trying 2666 now

Bro owi,
did you get your kit 2933 from newegg.my? 
Me...not yet.

Btw,
nice results...up........

My 2933C12 is not arrive yet ETA next week.

Congratz bro your toys have reached Newegg office safe and sound

Thanks.......yea,they will send me tmr.

I did some research and Noctua cooler seems to have a very good review. here's the site Noctua official site

I am using HTPC casing (Silverstone GD-06) and it has limited height and space for my cooler. Noctua has variety of choices for me. Quiet fan and efficient cooling (based on review).

At least my 2933 memory came today.......
Some results.....not tweaked yet...DDR3-3000......(no time,atm)....