Should I put 1.5 vcore on my i7 4790k?

[Ellis_D]

So basically, I'm trying to get my 4790k to 5ghz just to say I can and it seems I'm going to have to push the voltage close to 1.5v with hyperthreading disabled (hopefully not much more). It's also a rather cool night so I figured I'd be able to keep the temps manageable, If I can stress it at 5ghz for 10 minutes, I'd be happy enough hitting that mark and by no means, am I trying to get a stable 24/7 overclock at 5ghz.

But my concern is would that much voltage hurt my chip? I currently have tried 4.9ghz (hyperthreading also disabled) at 1.4vcore with temps maxing at 85 so I reckon I could squeak by at 5ghz briefly.

 

[TheDualshock]

I don't see why you would overclock the CPU to that extent 😛
The 4790K is plenty powerful and I think it would be a better idea to get a less aggressive overclock (4.4-4.5Ghz) and have Hyperthreading enabled. I'm not too familiar with overclocking on Intel's side though.

 

[Ellis_D]

Like I said, I mostly want to do it just to say I did it and I'm only intending on doing it long enough to verify that it won't crash under load and then I'll be reverting back to my "daily-driver" of 4.7ghz.

 

[geofelt]

NO.

 

[Drew010]

Please don't. Unless you're running a phase change cooler or LN2, I guarantee your cooling setup won't be able to handle it, much less the copper/silicon inside your chip.

EDIT: some helpful reading on the subject http://www.tomshardware.com/forum/274139-29-electromigration

 

[Ellis_D]

realistically though, assuming I can keep the temperatures under control, how destructive could it be with that specific CPU. After all, the AMD 9590 comes at 1.5v stock.

 

[corndog1836]

I had my 4790k at 1.48v today for at 4.8ghz over clock. I did find out how long I could keep there. I would say 20 min stable. temps were below 75c

 

[Gabriel Ospina]

I had my 4790k at 1.48v today for at 4.8ghz over clock. I did find out how long I could keep there. I would say 20 min stable. temps were below 75c

what stresser did you use. i am running a 24/7 1.3v at 4.8ghz i7 4790k

 

[geofelt]

How high you can go is mostly determined by your luck in the bin lottery.
Some do 5.0, some don't do 4.5.
It is pointless to push your chip past it's limits.
It proves nothing.

But... it is YOUR cpu; do with it what you will.

 

[Ellis_D]

Oh wow, I completely forgot about this thread. For the record, I tested it out and I was able to boot into windows with 5ghz on 1.51vcore with hyperthreading disabled. The system crashed after two passes of Prime95 (so a few minutes under full load) and the temps never exceeded 80 (I left my computer out on my porch during a cold night so my coolant was nice and frosty).

I haven't had any issues with it in the three months since I tried that so I guess it all worked out.

 

[synphul]

I think you got lucky, it could very well have done permanent damage. Not to mention since p95 crashed I wouldn't call it even a stable temporary overclock. You're also lucky when you fired it up at 5ghz at that voltage that your 'frosty' coolant didn't condense and turn you components to paperweights. I wouldn't attempt to go that far without proper preparations and ln2 and even then not unless I had a spare cpu to toss in just in case.

 

[Ellis_D]

Chill out. I never said I was attempting a proper stable overclock and I was hyperbolizing when I said "frosty". It was more like the coolant was in the low-50s (Fahrenheit). I love how people on this site freak out when you try to have a little fun.

 

[synphul]

I wasn't freaking, but you have to understand when people say 'frosty' sometimes they mean it. I've seen multiple pics of people running their rig on the front porch in the snow, literally. Was just trying to offer sound advice, I never freak when it's someone else's rig. I only freak over mine cause if something goes south, then I have to pay to replace it lol.

 

[corndog1836]

I had my 4790k at 1.48v today for at 4.8ghz over clock. I did find out how long I could keep there. I would say 20 min stable. temps were below 75c

what stresser did you use. i am running a 24/7 1.3v at 4.8ghz i7 4790k

I used prime 95

 

[corndog1836]

I Am happy with 1.35v for 4.7ghz for gaming and extreme multitasking. the gaming don't use it. the multasking does. I can get 4.8ghz but it provides no seeable performance gain whatsoever. Mostly I use 4.4ghz 1.26v for 24/7 use. But all of my overclocks are rock solid stable even the 4.8 one. tested with prime 95 for hours upon hours. temps are awesome never above 60 ceclius with blended prime 95 stress test and Noctua DH-15 {BIG AIR BABY}. I WOULD NOT TRY 1.5v. unless I have a spare chip handy....

 

[corndog1836]

I had my 4790k at 1.48v today for at 4.8ghz over clock. I did find out how long I could keep there. I would say 20 min stable. temps were below 75c

what stresser did you use. i am running a 24/7 1.3v at 4.8ghz i7 4790k

I did manage to get the voltage down a bit also to 1.37V. but I don't really need 4.8ghz for anything. I am more in need of extreme overclocks in my video cards than my cpu...

 

[corndog1836]

So basically, I'm trying to get my 4790k to 5ghz just to say I can and it seems I'm going to have to push the voltage close to 1.5v with hyperthreading disabled (hopefully not much more). It's also a rather cool night so I figured I'd be able to keep the temps manageable, If I can stress it at 5ghz for 10 minutes, I'd be happy enough hitting that mark and by no means, am I trying to get a stable 24/7 overclock at 5ghz.

But my concern is would that much voltage hurt my chip? I currently have tried 4.9ghz (hyperthreading also disabled) at 1.4vcore with temps maxing at 85 so I reckon I could squeak by at 5ghz briefly.

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