Do i have a good chip?

Bigspud200

Bigspud200

Bigspud200

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I'm new at overclocking but know if something looks strange,
I have a i5 4670K at 4.2Ghz with a voltage of 1.059V and my temps are at 65-69c.

My cooler is some cheap arctic cooler freezer pro 7 which i'v heard isn't the best air cooler.

Is it normal that when i run both aida64 and prime95 that at 100% load i get max temps of 69c or do i have a decent chip and when i come to getting my antec kuhler h2o 650 i should try for 4.6Ghz at maybe 1.249V?

Thanks in advance...
 
Hello and welcome to the forums ;)

Don't use prime or Aida!!

I run cinebench for a quick test and to establish a base oc then add 2-3 more clicks of vcore which will get me stable in asus realbench 2.0 and if that's stable everything is for me what I need my PC for.
Just don't exceed about 82c real world usage will be around 74c(gaming-bf4)

Write down your stable voltage from 4ghz upwards and see how it scales, if by time you get to 4.5ghz you may be temp limited due to Intels poor TIM but you may still be able to go 1 multi higher if you know how it scales with voltage, just don't run synthetics though.
 
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Thanks for the warm welcome :)

Just done Cinebench and hit a max of 57c.
So would you say for me to stick with this clock or try for 4.6Ghz next week i just want to get my moneys worth without degrading the cpu's life.
I also have a funny feeling i do have one of those rare chips.
 
You will find out when you get your new cooler :) Can go upto 1.3V on a decent air or AIO cooler, mines about 1.255 as I'm more happy with it at that voltage
 
as many people will tell you on this forum, synthetic stress tests can damage haswell chips.

look for second hand coolers as well, you can get some really good deals.
activate your trust and I'll drop you a PM.

welcome to the forum!
 
Oh i need 1000 post's first XD
How would you go about a good stress? As in what would you use?
I'm not going to upgrade as my CPU is classed as a "Gaming Cpu" and have no need for i7's.
The reason i would like to get a high overclock because i like the idea of having a "Not your everyday gaming pc" And that i can tweek my settings as such.
So should i stick with air cooling or go for water cooling as all i will be doing is gaming and running extreme graphics mods on game which allow me to which i know when it comes to shader's the cpu takes the beating.
 
"synthetic stress tests can damage haswell chips" should read that haswell chips are crap overclockers and die like peanuts when tested with prime 95 and the like. I have seen handbrake kill a haswell cpu as well and the volts were not that high, just the overclock was. Easy settings to kill a haswell cpu Vin 2.0, cache 1.35volts and vcore 1.35volts. Then run intel burn test or prime 95 etc. Hell that was my friend, I was running a lot lower when one of my haswell cpu's died.

"I run cinebench for a quick test and to establish a base oc then add 2-3 more clicks of vcore which will get me stable in asus realbench 2.0 and if that's stable everything is for me what I need my PC for."

Its just luck that you don't get data corruption, bsod or crashes. I got so much data corruption from doing it this way that I had to reinstall windows and trying to get it stable killed the cpu. HASWELL sucks for overclocking. In the end I just bought a IB-E and got 4.6Ghz right away and its stable in prime 95 and handbrake, and whats more important the cpu still works. Also no data corruption. What most people are taliking about as stable is benchmark stable which is not the same as being stable.

 
What a great piece of information zx128k!
I know never to go anywhere near 1.3V and i think you have just scared me... :) I think i might stay at my current clock until i understand more about overclocking and steering away from aida and prime to be honest not using anything to run long stress tests.

Thank for all the advice it's really appreciated.
And 1 up to zx thank you.
 
Out of interest, would you classify Intel's XTU as a synthetic tool, capable of damaging a Haswell CPU?. Does Cinebench test all aspects of a CPU, gaming, encoding etc?. I'm just not understanding how running a stress test, whilst keeping temps well below any 'dangerous' levels of heat, can damage a CPU.

"Easy settings to kill a haswell cpu Vin 2.0, cache 1.35volts and vcore 1.35volts"

That seems to be the widley accepted level of 'safe' voltages, according to some sites I'm reading, other than 1.35 for cache, that seems a little high.

Maybe I need more reading :p
 
It's benchmarks using AVX coding that increases the voltage and it's only a extra 0.1v so it won't just go and kill a cpu. It happens on offset and adaptive voltages but not if you use a fixed voltage. IBT does not use AVX coding and is what i used to test mine for stability. There is a lot of scaremongering in this thread and a lot of people on here are running at 1.35v daily. I have had mine up to 1.45v for 4.8ghz for benching and it's not dead.
 
I think it all comes down to your cooling setup and thermal compound.
I paid £27 for come IC Diamond a few weeks back and replaced MX-4 and noticed a 6C drop Delidding crosses my mind but i don't think i have the cojones for that.

Pasty would you say IBT is a safe stress test for haswell?
 
I use MX-4 on my cpu and gpu. Brilliant stuff. I took part in the IC Diamond/Perhillion test a year or two ago and found the IC24 practically no better (maybe 0.2 degree better) than MX-4 and the Perhillion to be worse than MX-4 on my setup. It's also harder to work with and certainly not worth the money.

I have never had any problems with IBT. As it doesn't use AVX coding the temps will be lower than a stress test such as Linx too.
 
"if you only use your pc to game, test it with games! if it's stable for your needs, then you're sorted!" Because unstable overclocks lead to random crashes, BSOD, data corruption and can damage other components. By just stating that it works in my game so who cares, it makes you go higher than you should with an overclock. Most of the time the few 100Mhz you get by doing this is a very small increase in performance in games.

Handbrake is good because it loads your cpu with a heavy load and test all parts of your system if you use the opencl option but it does not tell you if there are errors that don't lead to BSOD or crashes.

Everyone uses memtest when overclocking ram for this reason, to prevent data corruption and ensure normal opperation. Why would it stop being the same for cpu's?

Memtest is after all just a synthetic load like prime 95, I have seen ram that errors in memtest but does not crash games. In the end it ends in data corruption or worse but who cares if the game runs "right"?

The arguement after haswell is who cares so long as we can clock higher, so what if people get crashes random restarts, BSOD or if they lose data. So long as it works in a few games it will be grand. Running a PC 24/7 is not the same as getting the top spot on 3d marks website, benchmark stable is not the same as being stable. Adding a little more vcore does not mean you will be stable. You have to test to make sure and if it fails the test then its not a stable system.

Just a note to all the people out there, prime 95 is not a synthetic load its a real world appication that happens to have a test that detects errors built into it. Thats why its used not because we may use it day in or day out.

I have seen haswell die with my own eyes with 1.35 volts vcore and IBT/prime95, overclocking is a risk, not everyones lucky.
 
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zx128k said:
"if you only use your pc to game, test it with games! if it's stable for your needs, then you're sorted!" Because unstable overclocks lead to random crashes, BSOD, data corruption and can damage other components. By just stating that it works in my game so who cares, it makes you go higher than you should with an overclock. Most of the time the few 100Mhz you get by doing this is a very small increase in performance in games.

Handbrake is good because it loads your cpu with a heavy load and test all parts of your system if you use the opencl option but it does not tell you if there are errors that don't lead to BSOD or crashes.

Everyone uses memtest when overclocking ram for this reason, to prevent data corruption and ensure normal opperation. Why would it stop being the same for cpu's?

Memtest is after all just a synthetic load like prime 95, I have seen ram that errors in memtest but does not crash games. In the end it ends in data corruption or worse but who cares if the game runs "right"?

The arguement after haswell is who cares so long as we can clock higher, so what if people get crashes random restarts, BSOD or if they lose data. So long as it works in a few games it will be grand. Running a PC 24/7 is not the same as getting the top spot on 3d marks website, benchmark stable is not the same as being stable. Adding a little more vcore does not mean you will be stable. You have to test to make sure and if it fails the test then its not a stable system.

Just a note to all the people out there, prime 95 is not a synthetic load its a real world appication that happens to have a test that detects errors built into it. Thats why its used not because we may use it day in or day out.

I have seen haswell die with my own eyes with 1.35 volts vcore and IBT/prime95, overclocking is a risk, not everyones lucky.
Click to expand...
hi zx128k
I forgot to mention that I usually run benchmarks like valley or heaven or 3dmark11 before I do any gaming. you are completely right about the BSOD situation. I found that if I pass 3dmark11 or valley on the highest settings then I'm "game stable". I am not an expert by any means, I'd just thought I'd share my experience and this is what works for me
 
If it passes heaven, then crysis 2 and 3, payday 2 or metro last light it could still crash. Heaven is good for finding issues with PCI-e or graphics card (it does not hit the cpu hard) but crysis 2 or 3 is better.

You can get away with murder and still pass 3d mark 11. System could be completely unstable and you will get zero issues. Then crash like mad in the games I have listed above. If it is stable then it should not crash no matter what you feed it.
 
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