4930K Overclock questions

Hey all,

Got a 4930K here that I've been toying around with. Anything 4.3GHz+ requires 1.230Vcore or more. Odd thing is over the last few days I've gotten it stable at 4.2GHz with only 1.2/1.205 Vcore. It's odd to me because even my 3930K didn't get results that good and I read these were harder to overclock. Main thing I'm wondering is if it's passing stress tests etc should I not be worried and I just got a really good chip? Will there be a performance diff between say running it at 4.2OC w/th 1.2V as opposed to 4.2OC w/th 1.25? Correct me if I'm wrong but the only thing that matters is if it's passing stress testing right? Anyways I know I'll have to run benchmarks etc but I thought I'd throw my ideas out there maybe someone with more experience overclocking Ivy-E can comment.

Thanks!

4.2GHz 1.2vcore Screenshot

 

Imo as long as you're below 1.30v its fine..


So how much do you need for ie 4.4-4.5ghz, still below 1.30v?

 

If memory serves I got it stable at 4.4 @ 1.3Vcore but the heat was more than my current cooling can cope with. I didn't know 1.3 was a good cap, saw people pushing their SB-E's up to 1.4 etc. Just found it odd that my Ivy-E here was doing so well at 1.2 since my 3930K at the same frequency took way more juice on the same motherboard too. Just found that kinda odd but not every chip is the same as they say.

 

Ill be putting 1.35v through my 4930 for 24/7 use. I may even go around 1.39 or 1.40v.

 

is 1.4 bad for 24/7? I run mine 4.5 @ 1.4 24/7, Max temp Prime95 is 78-79..Playing games max temp is 60.

 

1.4v under custom water is fine for 24/7 use. Don't know about air cooling, i don't do air cooling.

 

You want big OCs, water is the way to go.

 

Well not that 1.30v is bad, the problem is its thermal limit like you noticed yourself, anything more will need a bigger custom water cooling.

 

I have mine at 4.4 @1.280v my old 3930k was 4.6 @ 1.3v but remember you get about the same performance from the 4930k with 200mhz less clocks than the 3930k

 

Yeap, longetivity of hardware also.

 

I have a Golden batch 4930k courtesy of RPGamesplayer. Does 5ghz on 1.36v but need to have some decent cooling.
http://forums.guru3d.com/showthread.php?t=382200

 

wow awesome what are you using for cooling?

 

Using water..3xRX360 rads, 2xD5 pumps, Dual Pump Rerservoir for D5's. I may add another single RX 120 radiator on the rear fan of the case (900D). Its complete overkill of course, Ill be building it around end of May in my Holidays.

 

There's no such thing when it comes to cooling

 

you don't need to run your cpu at maxed out clocks 24/7
let the power management kick in and it will drop down when your not abusing it
and it will run cooler,less stress and best ,last longer.that's the beauty of speedstep

I run my system at 4.65(125 bclock) it will drop down as lows as .900 Ghz
when not under load and (1.0v) and soon as it senses a load jump right to max
(1.45-1.48) at 4.65GHz

 

Once you hit the cpu max oc threshold, things like speedstep and c1e need to be disabled otherwise your oc becomes unstable. That's why i do not use powersaving features.

 

Overkill, yeah haha.

 

if you have to turn off power saving features at those speeds then your processor is not stable
When it's truly stable at a certain speed
All features will available

 

This

From what I saw only older cpus had some hard time with c-states & EIST with high OC. Now they "fixed" it and it should be ok with both enabled, at least EIST and C3.

I re-enabled all my C states incl. C7s and its ok. Use to be a bit unpredictable, but like bigcid1 said if its not 100% stable then it can be just that.. And i think that was by me too, few voltages settings not optimal.

 

Just for a goof I took a look
In my bios and my system bclock
Was 125mhz .When the bclock is set at 125
The bios locked the cpu voltage at 1.46
Which is too high.if I put it back to 100mhz
And use the xmp settings
The cpu voltage will vary according to the clocks