Intel Ivy Bridge Results and Ranking Thread ....

[apsxr6t]

I've managed to get my 3770K stable at 4.4ghz. Using a offset voltage with a
-0.05v reduction.

LLC is set to medium and I'm using the Asus optimised power setting for phase control. The board is a Asus P8Z77-V deluxe

So far its been Aida64 stable for 10 hours and my max temps are 74 degrees, currently its in the high 60's to low 70's

Its also using about 1.160v on the stability test. Just want to let it go for a few more hours then I'll post a pic

[Caffeine Dealer]

The highest i can boot mine into Windows is 4.840Ghz.
It refuses to boot at any higher speed regardless of voltage but will go higher inside Windows using Asus AISuite.

The voltage is way too high for a 24/7 OC though. It would only be good for benching.

[KRiSX]

just started playing with my 3570k... without much effort it appears to be running 4.5ghz @ 1.325v sitting around 70-75C under a H50 (sometimes hits 80-81)

pretty much just used the CPU Level Up feature of the ASUS Maximus V Gene... 4.6 was highest option it gave but it crashed during prime95 run... dropped to 4.4 and it seemed fine for over an hour so i've just bumped it up to 4.5 and it seems to be cruising along ok

will leave it going for the best part of the day and see where we end up

UPDATE: have dropped vcore to 1.3... kinda just trying things on the fly...

[mehkat]

4.6 @ 1.25V, ran prime for about 9 hours. this is it at 5 hours
Did 4.2 @ stock, 4.4 @ 1.2 but only stressed for about an hour or so on those.
What's the voltage offset ppl are talking about? Had a look and can't see this setting in my bios, all I am doing is upping the multi and adding volts in tiny increments, no other tweaking at all

[LandshutLion]

Any body using the same cooler got some results??

These temps seem a bit high to me, could have over-done-it with the thermal paste.

3570k idling around 28C with 1.05V.

Hits 88 under full load at 1.3V (about 2-3 hours of Prime95@4.6ghz)

Hits 78 under full load at 1.2V (same)

Ambient (room not case) is around 15-18C. At idle the CPU is about 5C above the in-case temp.

3570k
Asus P8z77LK
16gb Patriot 1866
Samsung 128gb SSD
RadeonHD 3870
CoolerMaster Hyper-212
SeaSonic 750/Antec Sonata III

[LandshutLion]

Sorry to bombard you guys....

I haven't OC'd since i did my E8400 4 years ago, i feel a bit newbish.

I've tried using the offset voltage function for overclocking (FAIL). Compounded by the fact that when i set bios to OC in 'offset' mode, the standard voltage changes every time i reboot, sometimes it comes in with 1.17, sometimes with 0.968 or anything in between.... i'm using an Asus P8Z77LK. When i set it to 'offset' mode, is the voltage that is displayed the voltage when the processor is throttled (ie 1.6ghz), @max or @turbo????

Could anybody give a short explanation (or point me in the direction of one) on a) how to use the offset voltage for OCing, b) what is this DIGI+ VRM suff and c) why we shouldn't change the FSB (BCLK/PEG) frequency??

Thanks Guys!!

3570k
Asus P8z77LK
16gb Patriot 1866
Samsung 128gb SSD
RadeonHD 3870
CoolerMaster Hyper-212
SeaSonic 750/Antec Sonata III

[NNNG]

Originally Posted by LandshutLion

Sorry to bombard you guys....

I haven't OC'd since i did my E8400 4 years ago, i feel a bit newbish.

I've tried using the offset voltage function for overclocking (FAIL). Compounded by the fact that when i set bios to OC in 'offset' mode, the standard voltage changes every time i reboot, sometimes it comes in with 1.17, sometimes with 0.968 or anything in between.... i'm using an Asus P8Z77LK. When i set it to 'offset' mode, is the voltage that is displayed the voltage when the processor is throttled (ie 1.6ghz), @max or @turbo????

Could anybody give a short explanation (or point me in the direction of one) on a) how to use the offset voltage for OCing, b) what is this DIGI+ VRM suff and c) why we shouldn't change the FSB (BCLK/PEG) frequency??

Thanks Guys!!

3570k
Asus P8z77LK
16gb Patriot 1866
Samsung 128gb SSD
RadeonHD 3870
CoolerMaster Hyper-212
SeaSonic 750/Antec Sonata III

a) Offset simply offsets the voltage by a given amount with respect to the default voltage. Voltage will still vary over time with respect to load due to a number of things such as power saving options that downclock/volt the processor at idle. So if at stock your voltage was 1.10v under load and you have an offset of +0.05v, then it should now be 1.15v under load. If your idle voltage was 1.05v it should now be 1.10v. Of course in reality it might be a bit off due to various things, especially when overclocked (voltage droops with current, to offset this use load line calibration or increase the offset). If using offset control then I recommend disabling C3/C6 state support.

Higher frequencies need more voltage. You can just increase the multiplier until it's unstable then increase voltage. Or you can find (using the internet) the approximate voltage it will need for your desired overclock, make it run at that, then increase multiplier to where you want it minus one, then tweak it to get it perfect. You decide. Also raise power and current limits in BIOS to some really high value (doesn't matter what, 250 watts / amps will do) if they're there.

b) The power consumption of the CPU varies wildly over time, but the voltage fed into it must remain relatively constant. This is done by a Voltage Regulator Module (VRM). A bunch of of capacitors, chokes, and MOSFETs (power transistors) do this. The MOSFETs are turned on (and off) by a PWM controller which can be analogue or digital. On your board it is digital which is apparently more efficient, precise, and allows more options in BIOS. On the minus side, it's only 3 or 4 phase for the CPU cores and is only partially heatsinked.

c) because a lot of things operate off of BCLK like the PCI-E bus, changing it by more than 5%-10% therefore results in instability.

d) Your temps seem fine. I have a similar cooler (Xigmatek SD1283 with dual Enermax PWM fans, 1500 rpm load) and get 76 load at 4.4 GHz, 1.2v, 20C ambient.

[WishBone17]

Just got my new ivy, and in the wise words of Snoop Dogg, "Drop it like its HOT!" because its damn HOT!!

Still fine tuning at this stage. Might be able to drop the volts.
Im using Fixed voltages and LLC set to level 1.. It gives me a much better control of the volts.

This is under a custom watercooled loop too so id hate to see what those blokes using a H80 or NHD14 get.

[kazen]

thought id post in this thread what ive been getting up to.
cant be bothered screenshotting for proof, but worked my setup (m5g, 3770K) to 4.5ghz at 1.35vCore, 1.8vPLL, 1.1 VCCSA and High LLC, and been working my vCore down from there using 10x linpack at all ram to test it.
so far im down to 1.28v and still seems strong.
what vCore are people seeing stable at 4.5ghz?

ive tested the same cpu stable in 3d benchmarks at 4.8, but of course they're just getting too hot to bare, tested at 4.9, but refused to run, i suspect that the core was just too hot.

[starkers92]

3570k at about 1.18-1.2 volts under load @ 4.4GHz, Max temps ~63 degree's. Using a low LLC, and an offset of -0.02

[LandshutLion]

Got my 3570 stable @ 4.6 with 1.25 volts under load. Temps max around 80 with a Hyper 212-plus. Off-set @ +0.09 over stock of 1.16, but it drops to around 0.8 when idling, ie its never actually at 1.16. (Asus P8Z77-LK mobo)

I might try some benchmarking this weekend, but given that it already hits 80 with my cooler, i'm a little reserved about pushing it any higher.

On a side note, installed CoreTemp on my work issued laptop for shits n' giggels (i5-2520M). It easily hits 100 so i wonder if those kind of temps are actually OK on intel's chips. Do i trust Lenovo?

[LandshutLion]

Oh yeah...

Big thanks to NNNG for the tips on using off-set.

Cheers

[starkers92]

You've inspired me to push mine a little harder! I have a coolermaster 612 but I dont appear to be getting as high temps as everyone else

[kazen]

4.5ghz stable at 1.25v on my 3770K

[eva2000]

Swapped over from 2700K to 3570K cpu with 2x4GB Samsung 1600 30nm 1.35v memory on same motherboard Asus Maximus IV GeneZ.. looking good cpu clock wise

Just testing cpu first before clocking memory





First day with 3570K