Overclock 4790k Stable and Unstable

[ablangc]

So I was able to overclock my CPU at a stable 4.7 GHz @ 1.270 Core Voltage.  I tested my overclock utilizing Prime 95 ver 26.6, Intel Extreme Tuning Utility, & Aida 64 for 2 hours with an average temp in the low 80's using an H80i. 

 

Now I decided to really push the system using Prime 95 (Small FFT's) and Heaven Benchmark 4.0 at the same time.  Within 10 minutes, it would crash with the Watchdog error.  Is this indicative to an unstable overclock/core voltage setting and I really need to work more on trying to get a stable overclock?  The thing is, playing games at 4.7 GHz @ 1.270 Core Voltage, the system never crashes (4+ hours)  Should I just leave it as is or continue to find a more stable overclock setting because prime 95 and Heaven were running at the same time?  Thanks for your advice and help in advance.

 

My specs are in the signature line.

[i_build_nanosuits]

Do not use prime95 to stress test your haswell CPU...this is an old piece of software that is not suited for haswell stress testing...it overheat the CPU too much to provide trusty results...stick to intel XTU run it for a few hours and then use your computer normaly and after a couple days you'll know if it's stable of not.

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Please don't use prime95! It can damage your processor, I think it also raises the voltage.

[chriscoolzap]

Do not use prime95 to stress test your haswell CPU...this is an old piece of software that is not suited for haswell stress testing...it overheat the CPU too much to provide trusty results...stick to intel XTU run it for a few hours and then use your computer normaly and after a couple days you'll know if it's stable of not.

Even Aida64 works, just don't use Prime95. It's not good for the processor you are using. 

[i_build_nanosuits]

Please don't use prime95! It can damage your processor, I think it also raises the voltage.

yes if the user is on adaptative voltages, aida and prime 95 will overvolt the chip and can even kill the processor...but even on manual voltages prime95 reach too high temps...i recommend using intel XTU (on adaptative is fine with this one) and aida (MANUAL VOLTAGES!!) and also maybe run some benchmarking tools after that (cinebench, 3d mark...) and then play games and stuff...that's IMHO the best way to confirm stability.

[chriscoolzap]

yes if the user is on adaptative voltages, aida and prime 95 will overvolt the chip and can even kill the processor...but even on manual voltages prime95 reach too high temps...i recommend using intel XTU (on adaptative is fine with this one) and aida (MANUAL VOLTAGES!!) and also maybe run some benchmarking tools after that (cinebench, 3d mark...) and then play games and stuff...that's IMHO the best way to confirm stability.

Run the stability test for at least 24 hours to ensure that the system is stable. Also, make sure to keep an eye on temperatures are okay during the stress test, too. 

[ablangc]

Ok, I have run Intel XTU for 24 hours at a stable 1.270 last month and it is all good to go.  I even have done the same thing with Prime 95 Ver 26.6, (not the newer one because I was told it overheats the CPU)  and is stable.  Same with Aida 64.  I went a step further as stated in the OP to run Heaven Benchmark along with Intel XTU and it crashes within 10 minutes.  Did the same thing with Aida 64 and Heaven Benchmark and it crashes within 10 minutes. 

 

Running Aida 64, Prime 95 Ver 26.6, Intel XTU individually for 24 hours each has proven stable at 1.270 Core Voltage @ 4.7 GHz.  It's when I run any one of these tests along with Heaven Benchmark, it fails.  I hope I cleared up the OP.  Any thoughts?

[i_build_nanosuits]

bump vcore slightly and try again to stress the system as much as you can (provided you still have some thermal headroom) 

[ablangc]

Yeah, that's what I decided to do.  I am starting at 1.295 and going to work my way down.  So far so good.  Going to take away - 0.005 every time it passes. 

[i_build_nanosuits]

Yeah, that's what I decided to do.  I am starting at 1.295 and going to work my way down.  So far so good.  Going to take away - 0.005 every time it passes. 

may i ask why you need such a crazy overclock out of the gate buddy?

with such strong processors i usualy recommend to wait till the cpu is phasing out (at least in regards to gaming that applies) before going balls out on the overclock...you aim for 144fps or you render 4k porn videos?!

[D2ultima]

may i ask why you need such a crazy overclock out of the gate buddy?

with such strong processors i usualy recommend to wait till the cpu is phasing out (at least in regards to gaming that applies) before going balls out on the overclock...you aim for 144fps or you render 4k porn videos?!

Who needs a reason for POWER? MWAHAHAHAHAHAHAHAHAHHAHAHAH

(I actually use my power though I dunno about 90% of the other people who overclock)

[ablangc]

I love tweaking my system more than I do playing games. I always like to see how far I can push the limits safely with what I have. So far, I have it stable at 1.285 Core voltage at 4.7 GHz but currently still running Aida 64 and heaven benchmark.

[ablangc]

I have had this cpu since October and have been trying to overclock it as best I can when I have time. I try not to exceed 1.3 core voltage but have pushed it as far as 1.35

[i_build_nanosuits]

I have had this cpu since October and have been trying to overclock it as best I can when I have time. I try not to exceed 1.3 core voltage but have pushed it as far as 1.35

yeah if you plan on using this chip for some years you should stick to 1.3v or less for extended use.

[ThomasD]

Out of curiosity I'd try runing it at stock/turbo with both AIDA64 and Heaven and see if it crashes...

 

Beyond that stability is relative.  There is rock solid under all conditions, and then there is good enough for the things that I normally do.

 

It is also easier to live on the edge if there are no real consequences (i.e. what do you stand to 'lose' if the system does crash at the wrong moment?)

[ablangc]

So far, the computer is still running Aida64 and Heaven benchmark on a cycle simultaneously with 1.285 Core Voltage @ 4.7 GHz.  When I hit the 24 hour mark, I will try 1.280. 

[ablangc]

Out of curiosity I'd try runing it at stock/turbo with both AIDA64 and Heaven and see if it crashes...

 

Beyond that stability is relative.  There is rock solid under all conditions, and then there is good enough for the things that I normally do.

 

It is also easier to live on the edge if there are no real consequences (i.e. what do you stand to 'lose' if the system does crash at the wrong moment?)

 

 

I would try that but love pushing my system to the edge. No loss if it does crash as this is just a gaming rig.