Core i7 4770K OC Voltage?

[theonerm2]

What is the max voltage I should use with my Corsair H105 cooler? I'm thinking 1.35v should be max but I've been pumping 1.5v through the chip trying to get 4.5GHz. It's not stable at all at 4.5GHz or 4.4GHz. Doesn't matter what settings I use either I just can not get it stable. There was a time I got 4.497GHz stable but I can't seem to get it now. I don't remember those magic settings.

 

[TechyInAZ]

Wow, you got a bad chip then.

Max voltage should be 1.35v. Don't surpass that.

 

[redgarl]

My 4770k doesn't OC... AT ALL! I can barely get 4GHZ, even there, why OC at 4GHz when the boost frequency is... 4GHz...?

These chips are bad, period... many don't OC well at all unlike what people want you to believe.

 

[TechyInAZ]

My 4770k doesn't OC... AT ALL! I can barely get 4GHZ, even there, why OC at 4GHz when the boost frequency is... 4GHz...?

These chips are bad, period... many don't OC well at all unlike what people want you to believe.

It is true that haswell didn't OC as well as Devils Canyon, but it isn't nearly as extreme as Skylake vs Kaby.

There are plenty of 4770ks that can hit 4.4/4.5ghz.

Actually, it is beneficial for you to overclock to 4ghz redgarl. Turbo boost ONLY boosts to 4ghz when ONE CORE is under load, then goes to 3.6/3.7ghz when under full load.

 

[theonerm2]

After I made this post I set my voltage to 1.35 and set my multiplier to 45. Fired up OCCT and instant BSOD as soon as the test began. But then I tried AIDA64 and it's been running for 45 minutes now. Why would it instantly fail on OCCT but runs a long time on AIDA64? Well I wouldn't really call that a long time but it runs a lot longer than OCCT does.

 

[iamacow]

The op doesn't have a bad chip. only 10% of the 4770Ks get above 4.5ghz and most need insane voltage like 1.5v.

The highest I ever was able to get was 4.7ghz with 1.45v. It wasn't stable, though 4.6ghz was. Not worth running the chip at that voltage for 100-200mhz. I ended up with 4.2ghz @ 1.2v.

 

[TechyInAZ]

Wow really? Haswell was that bad eh? I can hit 4.7ghz at 1.35v on my 4690K.

OCCT has a slightly different workload vs AIDA64. OCCT seems to be a lot more accurate, if any ONE of thoses tests crash, means the OC is bad.

 

[iamacow]

Yeah Haswells chips are bad overclockers. kinda of luck of the draw type deal.

 

[theonerm2]

Wow really? Haswell was that bad eh? I can hit 4.7ghz at 1.35v on my 4690K.

OCCT has a slightly different workload vs AIDA64. OCCT seems to be a lot more accurate, if any ONE of thoses tests crash, means the OC is bad.

Devil's Canyon was much better at overclocking due to extra capacitors that help deliver smoother power to the die and much improved thermal interface material.

My OC is still running. I've been playing games and everything. Still no crash.

 

[Georg Rauh]

Haswell are not "bad overclockers", the issue here is the temps of these when they are not delidded. They run insanely hot and make many overclock attempts a joke. (Unlike you like to see 90s C. or higher when you stress test).

Here is the funny part:

I have a "meh" 4770K which I did NOT delid (an entire story why I didn't, lol...but let's keep this for another time) and I run this PC with this chip at 4.4 at 1.250 Vcore set in Bios FOR YEARS. In general daily use and also in games (FC5 etc, far cry series had always been picky when it comes to overclocking), the PC is *STABLE*.

I just, after many years where I didn't bother with more overclocking yet did a few runs OCCT, and I get WHEA errors or crashes or freezes within minutes, at temps approaching 85. Which would indicate the system is really not stable at all.

But I am long not bothering with Prime95, OCCT etc. anymore since their "real life value" for testing CPUs, with new i5/i7 CPUs is questionable. They really don't do anything else but heating up your CPU and put them an extremely unrealistic scenario. (Let's not even mention later version of Prime with AVX instructions which add even more volts and heat up your chips like crazy)

As said, I am running this PC *for years*, so should I worry because OCCT freezes after 2 minutes? Hardly.

If you want to do better real life testing, use Asus "Real Bench", or Intel Extreme Utility Bench, with Asus Real Bench possibly the best test out there.

 

[theonerm2]

I've tried real bench. It crashes after a while. I did end up crashing randomly just while the PC was idle and I don't remember the error. The CPU just is not stable at any voltage with the clock speed above 4.0GHz. I'd like 4.4GHz or higher but in order to do that I need a different CPU. I've tried to overclock so many times. I used to have a 4.3GHz overclock on it and it used to crash all the time. Now it's rock solid stable. Doesn't get too hot. Runs my games perfectly. The overclocker in me wants more but I'm satisfied with where I'm at for now. Of course I'd like a more powerful CPU. I'm a PC hardware enthusiast. But I'm ok with where I'm at because it does what I need it to do. If you have any tips for me I'd try them though. I'd like to see more than 4.0GHz out of this thing. It's more of a want than a need though but if I can get more speed out of it I'll take it for sure.

 

[iamacow]

Haswell are "Bad overclockers" because 99.9% of people overclocking aren't going to delid for an exta 200mhz. Those chips have a hard limit of 5Ghz without some LN2 and 1.5v

 

[Georg Rauh]

My magic boundary is 4.4. I can run reasonably well to 4.4 1.230-1.250V, but anything above would mean a HUGE, and I mean 0.100 voltage increase. Since my chip already gets in the high 80s like this, I am not even thinking about adding another 0.100 or 0.200 even just for 100-200mhz. And everything above 1.350 etc. for 24/7...I would not recommend. And yes this is also (one) reason I did not delid, it's a meh chip and even with delidding I would need to feed I'd say at least 1.4 or so just to gain 200mhz.

I'd say 5ghz is a rare exception, if you have a chip that does 4.8-5.0, be glad. In reality I'd turn down expectations. 4.4-4.7 is more reasonable IMO.

 

[theonerm2]

I bought a used 4790K and am going to sell my 4770K. Wish me luck. I just got tired of having a poor overclocker.

 

[TechyInAZ]

Well...Overclocking isn't guaranteed. Hope your 4790K is good!!

I had my 4690K at 4.5ghz, but I could push it to 4.7ghz at 1.35v.

 

[theonerm2]

Well...Overclocking isn't guaranteed. Hope your 4790K is good!!

I had my 4690K at 4.5ghz, but I could push it to 4.7ghz at 1.35v.

i know overclocking isn't guaranteed. But I'm still excited to see how far it goes. Even stock speed is faster than my CPU though. I'm hoping for 4.6GHz or greater. Ever since I switched CPU's from my 4690K at 4.6GHz to the 4770K at only 4.0GHz I've felt kind of robbed. I like to overclock and it's no fun having a 4770K that needs 1.29v for just 4.0GHz and nothing higher is stable no matter the voltage. I'll post my overclocking results when I get my CPU.

 

[TechyInAZ]

So you can't even get 4.1ghz at say 1.35v?? WOW

 

[theonerm2]

So you can't even get 4.1ghz at say 1.35v?? WOW

Nope I've tried it and I get random blue screens but it passes a 1 hour real bench stress test.

 

[Georg Rauh]

No being able to go over 4.0@1.35V...this is really hard to believe. I mean "poor overclocker" doesn't even describe this. (And I myself never had "really good" chips). I'd first consider a problem with the board (and bios settings) and PSU. AFAIK they should do 4.0 at stock, many even 4.2 or so on stock.

I'd say 4.0-4.2, simply CPU Input voltage at 1.800 (or whatever it's called on your board) and Vcore (manual) at 1.250 (to start). Do you have your LLC (load line calibration) set right? Again depending on board, this is important. Here on Asus, LLC 7-8 so there is only little droop under load. (Other boards "high", "very high" etc.). Highly unusual you'd need to set anything just for 4.0.

How do you test stability?

Edit: From ALL stability tests, OCCT is the most sensitive...but I really don't necessarily recommend it. I can also pass hours Realbench, X264 stability test and even Prime 95 (26.6, custom large FFT for an hour)...but BSOD in only 30 seconds OCCT large. (Unless I give even more voltage which I don't want to, my undelidded chip is already getting in the high 80s at 1.250)

 

[The Paladin]

Haswell are not bad over clockers if your running a good z87 or z97 motherboard not one of those cheap ones, I run a 4790K on Z87 and I get 4.7 easy enough at 1.29v and x47, I should try to get more, but I am lazy, before that I had a 4690k and I got 4.6 easy enough at 1.3v
.

you sure you have not forgotten an "auto" voltage setting somewhere ?

 

[Philballer17]

I bought a used 4790K and am going to sell my 4770K. Wish me luck. I just got tired of having a poor overclocker.

Well...Overclocking isn't guaranteed. Hope your 4790K is good!!

I had my 4690K at 4.5ghz, but I could push it to 4.7ghz at 1.35v.

You better have a Z-97 motherboard and not Z-87, or you'll be Out of Luck.

 

[theonerm2]

I have an Asus Z97-A. I got the 4790K today. Tried overclocking. 4.5GHz fails. Runs fine at stock speed though. Haven't tried 4.4GHz yet. My luck with cpu's and overclocking is so terrible. I think I'll quit overclocking for good now. I've been burned too many times. No more Z boards. No more AIO coolers. No more K chips. I'm done overclocking CPU's. I'm just going to retire my H105. Lord knows it's going to fail soon anyway. I've had it running 24/7 for 2 years now. I'm going to get a Hyper 212 evo. Overclocking costs so much extra. I paid $60 extra for my motherboard, $50 extra for the CPU back when I got it, I paid $80 extra for the cooler. That's almost $200. All for overclocking and I'm just keeping it at stock speed in the end. I wish I just got a cheap board and a Xeon E3 1231 V3 back in 2014. That way I'd never have been worried about overclocking to begin with.

 

[TechyInAZ]

LOL. You aren't alone. My 1700X (last I checked) only hit 3.8ghz.

 

[Philballer17]

I have an Asus Z97-A. I got the 4790K today. Tried overclocking. 4.5GHz fails. Runs fine at stock speed though. Haven't tried 4.4GHz yet. My luck with cpu's and overclocking is so terrible. I think I'll quit overclocking for good now. I've been burned too many times. No more Z boards. No more AIO coolers. No more K chips. I'm done overclocking CPU's. I'm just going to retire my H105. Lord knows it's going to fail soon anyway. I've had it running 24/7 for 2 years now. I'm going to get a Hyper 212 evo. Overclocking costs so much extra. I paid $60 extra for my motherboard, $50 extra for the CPU back when I got it, I paid $80 extra for the cooler. That's almost $200. All for overclocking and I'm just keeping it at stock speed in the end. I wish I just got a cheap board and a Xeon E3 1231 V3 back in 2014. That way I'd never have been worried about overclocking to begin with.

Just submit an RMA on it to intel, and they'll ship you a brand new 4790k. It's still under warranty until November 2018! Just tell them it is having temp issues, and dont mention overclocking. I was able to achieve 4.6GHZ on 1.35V with the brand new one straight from intels factory.

 

[TechyInAZ]

That's really unethical man.

4.5ghz is fine, any higher really won't yield that much more performance.