Convince me not to sidegrade to an i7-4790k

[Dave3000]

Keeping the vcore on offset mode does increase the vcore if I overclock even mildly. For example at stock settings at full load it's around 1.14v shown by CPU-Z and if I overclock to 3.9 GHz it's around 1.168v on full load if I keep vcore on offset mode.

 

[Burpo]

That's not enough.. If you're going to use offset, give it +0.07 volts offset at least..

"Update:
Raised CPU voltage to 1.29v (cpu-z 1.26-1.27v on load) to pass Prime95."

http://www.overclock.net/t/1426258/overclocking-i7-4930k-help/20

 

[Dave3000]

1.29v for just 3.9 GHz? I have no issues with Prime 95 and Intel Burn Test at 4.2 GHz and vcore set manually to 1.17v (1.15v full load) or even at 3.9 GHz with vcore on offset. I'm already hitting 79c running Prime 95 at 4.2 GHz and manual vcore at 1.2v with auto load line calibration (1.2v full load).

 

[ehume]

I agree with Burpo. You are just nudging up the Vcore. Try it at 1.3v, then go lower if you want. But if Intel sets the max, given the maturity of this chip, they know exactly what it will take. If they say the max is 1.52v, you can take it to the bank.

In any case, since you are going to get a Skylake, you shouldn't worry about the longevity of this CPU.

 

[guskline]

Can you RMA the MB?

 

[Dave3000]

Oh, you raised your cpu voltage to 1.29v. I thought you were asking me to try 1.29v.

 

[Burpo]

Yes, we are! 1.29 at least to see how the cpu responds.. It will throttle around 100C, but doubt it will get that hot @ 4.3

 

[Dave3000]

Can you RMA the MB?

No I can't. Warranty is over and there is physical damage on the CPU socket. I did the damage by trying to remove what looked like thermal compound inside the socket or a small piece of crumb, not sure what it was, but it looks like I ended up scrapping off some of the plastic as that area looks darker than the rest of the socket after cleaning it up.

 

[Burpo]

I've seen some pretty messed up sockets.. I doubt that's going to effect your overclock.. I just don't see it happening.
Your CPU needs more volts.. That's all..

 

[Arachnotronic]

Dave3000

IMHO, just sell your 4390K and go with a reasonable X99 + 5820K + DDR4. You'll get good cash for the 4930K, a brand new motherboard, and you'll have fun with the new setup.

 

[Dave3000]

A 5820k is about as fast as a 4930k but I will lose PCI-E lanes. Not really an upgrade for me. If I"m going for a new CPU now I would rather go for the 4790k because 4 GHz vs 3.3 GHz. I rather have more clock speed than more than 4 cores with much lower clock speed.

 

[Burpo]

An i7-4930K runs fine at 4.4Ghz if you take the time to understand & adjust your settings.. It's free and easy to do..

 

[crashtech]

I'd buy that setup from the OP and then we would get to see how it does with 1.3V+.

 

[Burpo]

My thoughts too.. only I'm not sqeamish, and it'd be 1.5 volts

 

[ehume]

My thoughts too.. only I'm not sqeamish, and it'd be 1.5 volts

After all, we've all gotten a bit fried . . .

 

[rchunter]

No way would I go from a 6 core to a 4 core like that. That's a terrible waste of time and money. Just do some reading up on overclocking it and get a good AIO cooler. You should have no worries.

 

[Dave3000]

I'm having an stability issue with FSX and my CPU not overclocked currently. Sometimes when a flight loads up in FSX when it's around 91%-99% done loading the load screen will freeze and I have to end FSX through the Task Manager. It started happening a about a year ago. I have both the Steam end retail edition of FSX and they both act this way on my system, even without 3rd party addons.

 

[Burpo]

You seem to like to call everything a stability issue.. You've had this problem a year, yet you won't try what we recommend & report back? Could it be a loose nut behind the keyboard? j/k ().. In CPU section of bios, turn off hardware prefetch & lets see if it's a cache problem..

 

[Dave3000]

There is no "hardware prefetch" feature in the BIOS. No option to disable L2 or L3 cache in the BIOS either.

 

[Burpo]

 

[guskline]

Your least expensive, "wise" option is to buy a solid X79 mb that OCs well. Buy a new good one and be done with it.

I just sold my 3930k and Asus X79 mb to another forum poster who is super happy with it. I wanted the 5960x and Asus Rampage Extreme combo (my birthday present to myself). That being said, I found the 3930k Asus Sabertooth combo to be EXCELLENT OCers.

Lordy, you already have a 4390k. You fail to mention the mb but if it is a less expensive one, I understand. Just understand that the better X79 mbs combined with Excellent AIO coolers or Custom Water coolers really help the 6 core/12 thread cpus to fly.

If you didn't have the 4390k I might tell you to get the 4790k.

 

[soccerballtux]

Well I can't even OC my CPU to 3.9 GHz (max stock single core turbo on all core loads) without an issue. At 3.9 GHz sometime my PC will turn back on a few seconds later after I turn it off despite it running stable in Intel Burn Test and Prime 95 for hours. This is with the vcore on Auto which is around 1.19v for my CPU. I can even run these stress tests for hours without issue at 4.2 GHz 1.17v yet starting at 3.9 GHz 1.19v if have this "turning back on" issue when turning off my system.

you encountered this and instead of googling you decided you have an unstable system?

that's not instability, it's windows event timer waking the PC up to perform tasks!!!!! ugh

Why don't you use the psu switch? It saves power and won't turn itself back on.

not the problem

If the mobo turns back on after an ATX soft power-off event, then chances are, the mobo is damaged.

dummies

 

[rbk123]

Obviously Dave is not very good at OC'ing. He needs to up/down/side/ellliptical-grade to a non-K CPU at the stock speed he wants and be done with it.

 

[soccerballtux]

also, I've had issues with offset and auto voltage before, you should put it on manual and set Load Line Calibration to (probably) medium, whatever it takes to maintain the voltage in CPU-z that you set in the BIOS.

 

[soccerballtux]

Obviously Dave is not very good at OC'ing. He needs to up/down/side/ellliptical-grade to a non-K CPU at the stock speed he wants and be done with it.

but I'm still having the problem where my PC wakes up after suspend. maybe I should switch to AMD, maybe it's an Intel problem.