Sign in with
Sign up | Sign in
Your question
Solved

OC 4770k question

Last response: in CPUs
Share
March 18, 2014 2:28:17 PM

Hello,

I am new to OC. read some online and watched in you tube.

1st attempt
just raised the CPU clock rate to 40.
then booted to the system. all good.
But Vcore was 1.345 according to CPU-Z, Is that bad?


2nd attempt
CPU base clock 125Mhz
CPU clock rate to 34
CPU vcore 1.250V.

this time I had a boot failure.

any chance I damaged the CPU?
what and how should i proceed till I can find my safe and stable OC ability on my 4770K

PSU 600W
MB GA-z87-hd3

any more info I can provide to get your advice?

PS in bios on default settings I see:
CPU core frequency 3900
CPU vcore : 1.152V
CPU VRIN: 1.752V


Thank you.

More about : 4770k question

March 18, 2014 2:44:32 PM

With unlocked processors such as yours focus more on the CPU multiplier. And start with a small overclock then start working your way up. I doubt you damaged it you just set the cpu base too high and it couldn't start. That cpu should be able to handle 1.445 vcore under 90 degrees celcius at load. Here is a great tutorial on overclocking your processor (the mobo they use is different but it shouldnt change the outcome of their lesson. https://www.youtube.com/watch?v=ub6WnHmiIOs
m
0
l
a b K Overclocking
a c 81 à CPUs
March 18, 2014 2:58:58 PM

firstly you got it all wrong. o/c is achieved through increasing the unlocked multiplier, not the base clock of the cpu.increasing that you also overclocking the memory. if to be change that would be only 1-3Mhz. leaving voltage on auto will always give more than it actually needs to be stable.

Fist of all you must have an aftermarket cooler and a reliable and capable psu.whatever you do, always constantly monitor your temps using core temp , real temp or cpu hw monitor. all cpu are different so all o/c ability is different too.also depends on the mobo. just increase the multiplayer (which all intel cpu's are meant to). dont mess with the bclk leave it to 100 x multiplier = ghz. first off all use manual voltage and leave it at default. increase the multiplier by 1 and try 4.ghz run prime 95 for at least half an hour.if it is stable then increase further the multiplier and run prime 95 again. this way you will determine the cpu limit with stock voltage. when you get an error or restart or something on prime 95 then increase voltage by 0.005v till you stabilize it.depending on cooler you can achieve 4.3-4.4ghz or even higher. try not to pass 1.3v cause things get really nasty with the temps.better try not to pass 75c if you are aiming for a 24/7 use. also when o/c cause you overvolt the mobo vrm's (voltage regulator modules) you must have good tower ventilation and air flow.
m
0
l
Related resources
March 18, 2014 5:11:26 PM

What prime95 test to run? And what temps are good?
m
0
l
March 19, 2014 6:35:54 AM

Hey,
I did 4 Ghz
V core was 1.208.

Run prime 95 blend test.
Got around 70c with spikes of 77c.

Is that ok?

When run small FITS test temps are high around 90c. So I stoped.

What do you think guys?

Is blend test enough?

Also went to 4.2 mhz.
V core I left on auto, checked and it was 1.350. When run prime 95 test blend v core went to 1.4xx.

What should I do? How can I test and control the vcore.

Thank you.
m
0
l
a b K Overclocking
a b à CPUs
March 19, 2014 6:42:59 AM

Getting 90 c on Small FITs with only Vcore of 1.345. That is hot. Check your cooler.
m
0
l
a b K Overclocking
a c 81 à CPUs
March 19, 2014 11:31:15 AM

karelson said:
Hey,
I did 4 Ghz
V core was 1.208.

Run prime 95 blend test.
Got around 70c with spikes of 77c.

Is that ok?

When run small FITS test temps are high around 90c. So I stoped.

What do you think guys?

Is blend test enough?
b

Also went to 4.2 mhz.
V core I left on auto, checked and it was 1.350. When run prime 95 test blend v core went to 1.4xx.

What should I do? How can I test and control the vcore.

Thank you.


do you have the cooling potential it needs for o/c.?? as i mentioned erlier an aftermarket cooler is needed.
leaving voltage on auto will always give more than it actually needs to be stable and will result on very high temps. switch to manual vcore, increase by 0.005v
m
0
l
March 19, 2014 11:49:42 AM

Hey,

just raised the CPU clock rate to 45.
restarted to bios and saw that Vcore was 1.345V.

then I restart to windows, BUT my usb mouse and keyboard wont work.
tried all ports nothing works.

any Idea what happened?
is it possible i damaged cpu or MB?
how can i fix it, in bios usb mouse and keyboard work, when in WIN it won't even after i set clock back to 35.

any ideas?
m
0
l
a b K Overclocking
a c 81 à CPUs
March 19, 2014 11:59:09 AM

load optimal defaults on bios.
m
0
l
March 19, 2014 12:10:16 PM

chris987 said:
load optimal defaults on bios.


did not worked.
any other ideas?

when I boot to my mac HD (I have dual boot OSX and WIN7) every thing work fine.

Thank you.
m
0
l
a b K Overclocking
a c 81 à CPUs
March 19, 2014 12:43:56 PM

karelson said:
chris987 said:
load optimal defaults on bios.


did not worked.
any other ideas?

when I boot to my mac HD (I have dual boot OSX and WIN7) every thing work fine.

Thank you.


recconect to another usb and see if others are operational or not.
m
0
l
a b K Overclocking
a c 81 à CPUs
March 19, 2014 12:59:57 PM

well you said tried all of them didnt notice. there is a damage potential here.try also clearing cmos.dont try anything again before taking into consideration at least what i initially posted.. i have the impression that you just hit buttons!! what are your full specs?
m
0
l
March 19, 2014 1:28:09 PM

chris987 said:
i have the impression that you just hit buttons!!


what do you mean?

SPECS:
4770k
MB GA-z87-HD3
GTX760
PSU MK 3 600W
8GB sniper 1.5V

I did try to load optimal defaults a few times.
this time it worked, I will see if all workes with my bios settings.
How can test that all is working fine?

one more thing I did aginst your advise is:
put multiplier to 43.
CPUZ showed vcore 1.348 and when i ran prime 95 blend test for 2 min my temps were 90-100c and vcore 1.410.

so i guess I need better cooling, right?

also what should i do to find my stable OC speed?
and how to set Vcore? should i put manual 1.350 and lower it down till it works or put 1.250 and go up till it work.

Thanks in advance.


m
0
l
a b K Overclocking
a b à CPUs
March 19, 2014 1:29:30 PM

karelson said:
chris987 said:
load optimal defaults on bios.


did not worked.
any other ideas?

when I boot to my mac HD (I have dual boot OSX and WIN7) every thing work fine.

Thank you.


One thing is your system is running too hot for your over clock but you should know, no 2 processors are alike and they sometimes are not good over clockers. This might be the case here. Sorry man. At least you got your system back.

Oh yea I said that already about your system being too hot. Sorry.

I would look into your cooler before you go any further.
m
0
l
March 19, 2014 1:47:29 PM

JimF_35 said:
karelson said:
chris987 said:
load optimal defaults on bios.


did not worked.
any other ideas?

when I boot to my mac HD (I have dual boot OSX and WIN7) every thing work fine.

Thank you.


One thing is your system is running too hot for your over clock but you should know, no 2 processors are alike and they sometimes are not good over clockers. This might be the case here. Sorry man. At least you got your system back.

Oh yea I said that already about your system being too hot. Sorry.

I would look into your cooler before you go any further.


getting my Noctua NH-D14 hope this helps me with temps.

seem like up to 40-41 my vcore is up to 1.2XX and temps are up to 75c on prime blend test.
small FFT test CPU is around 90-100c....
beyond that temps are high and vcore 1.3xx-1.4xx

what should i do to find the base stable OC at this point?

thanks.
m
0
l
a b K Overclocking
a c 81 à CPUs
March 19, 2014 1:49:31 PM

well full specs also include tower and since we are talking o/c , cpu cooler which is obviously the stock one which isnt sufficient and you still insist on overclocking. what can i say!!!!?please dont.!you need something like this to proceed http://pcpartpicker.com/part/cooler-master-cpu-cooler-r....


m
0
l
March 19, 2014 1:57:42 PM

chris987 said:
well full specs also include tower and since we are talking o/c , cpu cooler which is obviously the stock one which isnt sufficient and you still insist on overclocking. what can i say!!!!?please dont.!you need something like this to proceed http://pcpartpicker.com/part/cooler-master-cpu-cooler-r....




hey
sorry my cooler is no stock is Cooler Master Hyper N520.
case is Corsair Carbide Series White 500R

will report back with my new cooler.

thank you all so much for the help
m
0
l

Best solution

a b K Overclocking
a c 81 à CPUs
March 19, 2014 2:09:43 PM

I did 4 Ghz
V core was 1.208.
Run prime 95 blend test.
Got around 70c with spikes of 77c
. this isnt good for such cooler is it fitted properly? http://www.tomshardware.co.uk/forum/333968-28-thermal-p... . set vcore value from auto to manual. leave it at stock and only increase multiplayer. try 4ghz at stock voltage and run stress test, if it fails increase by 0,005V. i already mentioned these.
Share
March 20, 2014 12:48:49 PM

chris987 said:
I did 4 Ghz
V core was 1.208.
Run prime 95 blend test.
Got around 70c with spikes of 77c
. this isnt good for such cooler is it fitted properly? http://www.tomshardware.co.uk/forum/333968-28-thermal-p... . set vcore value from auto to manual. leave it at stock and only increase multiplayer. try 4ghz at stock voltage and run stress test, if it fails increase by 0,005V. i already mentioned these.


Hey,

Got my new cooler Noctua NH-D14. installed and temps look better.

Now if I understand you correct.

Put 4ghz at stock voltage.
now stock vcore in the bios is 1.152 and in other place 1.144.

So I need to manually putt 1.152 and from there increse by 0.005V till i am stable.
then put 4.1ghz and increase by 0.005V till I am stable.

also, If i am stable at 1.152 can I decrease to see if i am stable?

while maintain my temps.

now which prime 95 test to run blend or small FFT?

UPDATE:

I am on 4ghz with manual Vcore of 1.152V (cpuz show 1.151)
running prime 95 blend test for that past 15min

Temps are between 55c-63c.

UPDATE 2:

running for 30 min, looks like the test puts heavier pressure on CPU compared to the test in the first 15 min.

now temps are 65c--75c-80c (one core war 85C)


m
0
l
a b K Overclocking
a c 81 à CPUs
March 20, 2014 1:09:46 PM

ok you got it right man.! dont get overexcited though and as you increase speeds and vcore also increase stress test time. to be sure for the stability. use blend test cause also tests memory. also besides the stress test also run your games and try to stay on each o/c state for a day or two, to ensure its good performance.!and keep the temps below 75c
m
0
l
March 20, 2014 1:14:54 PM

chris987 said:
ok you got it right man.! dont get overexcited though and as you increase speeds and vcore also increase stress test time. to be sure for the stability. use blend test cause also tests memory. also besides the stress test also run your games and try to stay on each o/c state for a day or two, to ensure its good performance.!and keep the temps below 75c


here are some updates, tell me what do you think?


UPDATE:

I am on 4ghz with manual Vcore of 1.152V (cpuz show 1.151)
running prime 95 blend test for that past 15min

Temps are between 55c-63c.

UPDATE 2:

running for 30 min, looks like the test puts heavier pressure on CPU compared to the test in the first 15 min.

now temps are 65c--75c-80c (one core war 85C)

first test 448K ( 9000 lucas-lehmer iterations)Passed. this is the first 15 min with temps up to 63c
second test 8K (800000 lucas-lehmer iterations)Passed. this is the next 15 min with temps up to 80c
thired test 512K (7800 lucas-lehmer iterations) running. this is the now with temps up to 60c.
Thanks.
m
0
l
March 20, 2014 1:37:55 PM

chris987 said:
ok you got it right man.! dont get overexcited though and as you increase speeds and vcore also increase stress test time. to be sure for the stability. use blend test cause also tests memory. also besides the stress test also run your games and try to stay on each o/c state for a day or two, to ensure its good performance.!and keep the temps below 75c


Well after 46 min no ERR.

now running again with same vcore 1.152 and 4.1ghz.....temps look the same (first 2 min of test).

what do you think?
m
0
l
a b K Overclocking
a c 81 à CPUs
March 20, 2014 4:47:58 PM

ok you have a stable o/c . i ve seen better temps for such volts! keep in mind though that real word games-aplications wont run 100% of the cpu so you will get lower temps.anyway improving your tower airfolw may also result in lowering temps by 1-2c. find a comfortable o/c spot and monitor through stress test and gaming the temps for couple of days to achieve a more accurate reading! also you can try installing an extra fan on 212 evo for push pull configuration!
m
0
l
!