Overcklocking problem

[SinOfLiberty]

Hello,

Recently my bro got a pc . His [COLOR=blue !important][FONT=inherit !important][COLOR=blue !important][FONT=inherit !important]cpu[/FONT][/FONT][/COLOR][/COLOR] is 2600K, oced to 3.9ghz. He went to the [COLOR=blue !important][FONT=inherit !important][COLOR=blue !important][FONT=inherit !important]bios[/FONT][/FONT][/COLOR][/COLOR] and found in the Bios setting, that VCCIO is set to 1.20000v as max voltage, but the system supports only 1.7000v, as it says in the bios. Current speed is at 1.205v. Same with my VCCSA, it set to 1.20000, bios limit is still 1.7000v max. Current work at 1.200v. CPU PL voltage is set to the 1.84375 and works at 1.873v. Yesterday my bro called the company which overcklocked the pc, they said that those voltages are ok and that If we will decrease them, the system will freeze.His system is deluxe p67 without sata issue; 2600K; xm3 corsair RAM, 1000w [COLOR=blue !important][FONT=inherit !important][COLOR=blue !important][FONT=inherit !important]power [/FONT][COLOR=blue !important][FONT=inherit !important]supply[/FONT][/COLOR][/FONT][/COLOR][/COLOR] corsair alsp and 2 [COLOR=blue !important][FONT=inherit !important][COLOR=blue ! important][FONT=inherit ! important]drives[/FONT][/FONT][/COLOR][/COLOR]. ssd plus hdd. So guys any ideas?

Thank you for your help

SinOfLiberty

 

[Puppies04]

I'm not 100% sure what you are trying to say but if his cpu voltage is set to 1.205v that is fine. You mention the bios limit is 1.7000v max, that is fine that is just the maximum you can raise it to (although you will most likely fry your chip if you do).

Are you trying to overclock past 3.9ghz or just making sure the computer is running safely?

 

[SinOfLiberty]

I want to say that I will pass 3.9ghz. Want to overcklock it to 4.1ghz. Want the cpu to be safe for using 24/7. I am worrying about voltages. I mean that if the max is 1.7000v and in the bios vccsa and vccio are set to have a max of 1.20000v. According to the math, 1.7000 is less than 1.20000. So, if it is set 1.20000 as max, does it mean that it is more then cpu can support?

Also, if I will lower voltages down to its` stock, is the computer will work fine?

I am a newbie, so i might have some mistakes.

Thanks

 

[Level_1]

At only 3.9ghz(only 100mhz over default turbo) everything should be at stock voltage.
Try save your current OC setting under tool in bios then change VCCI/VCCSA to default and test if its stable.

 

[veri745]

I am worrying about voltages. I mean that if the max is 1.7000v and in the bios vccsa and vccio are set to have a max of 1.20000v. According to the math, 1.7000 is less than 1.20000. So, if it is set 1.20000 as max, does it mean that it is more then cpu can support?

It what way is 1.7 < 1.2?

 

[SinOfLiberty]

Yea, it was fail on my part. 1.2 is less then 1.7. Sorry , lol. Ok, I will run prime 95 and see what happens

 

[SinOfLiberty]

Ok guys. I faced a bigger problem. I ran prime 95 for my new setting in the bios and what i got was that my computer shuted down after an hour of stress test. Well I thought, lets put the original setting that the company set. Same happened. PC shutted down after 2 hours. So guys, did i do something wrong or it is a pc itself does not function properly. BTW, cpu voltage is set to the manual; Auto

Thank you for your help

 

[Puppies04]

Are you checking your CPU temperature while you are running these tests? We can help you to raise the speed of your chip (the 2600k will hit 4.5ghz without going mad on the voltages).

We need to know exactly what components you are using though can you link the computer from a shops webpage or just list what Motherboard, case fans and PSU you are using. Then get coretemp and run it to see what your max temperatures are when running prime 95 (if they go above 75 degrees stop the test and report back here)

 

[SinOfLiberty]

I am trying to find out the problem why my pc shuts down while running prime 95. My cpu speed is at 3.9 ghz. So, i need to figure out the problem before i will start 4.5 ghz. Temperatures on my cpu are 59-60c. The hottest core gets to 62c, 66c as max. I use HW monitor; real temps and cpu-z. The company built this pc, not me. Parts which i am using are: CORSAIR 1000 psu; xms3 corsair ram 1600mhz, 2 sticks, each is 4GB; 2600K cpu; gtx 570 evga( non-supercklocked nor overcklocked); 3 coolermaster 200mm fans and 2 180mm fans. Coolermaster haf x case. P67 Deluxe mobo without B3 issue. Noctua U12P SE cpu cooler.

 

[Puppies04]

Is that 66c while running prime 95? If so you dont have a temp problem and you dont have a power problem with that system with a 1000w PSU (way overkill) so the next thing you need to rule out is bad RAM. Try memtest. If that isnt the problem try adding a little more CPU voltage i think you said you were running 1.200 try raising it to 1.250 and see if it still crashes. Dont go any higher than that for now just report back here.

 

[Puppies04]

In case you were worried about raising the voltage, the general max voltages recommended are around 1.3500-1.3800v http://forums.overclockers.co.uk/showthread.php?p=18779073 for 24/7 usage but be aware any overclocking can impact the life of the chip. Saying that intel post the max the chip will take as 1.5200v (see same link). Nobody can guarantee that your chip wont break but i havent heard of a single chip frying at the sort of voltages we are talking about as long as you make sure your temps dont raise over 70-75 you should be fine.

Also on another note, do you have an Asus motherboard? (just a hunch as you mentioned it had a deluxe board and asus do one called deluxe) Just asking as I believe there is a built in overclocking program you can use while in windows. Please post you MOBO make and model.

EDIT. If you want to sort this and get some good advice read this thread http://www.clunk.org.uk/forums/overclocking/39184-p67-sandy-bridge-overclocking-guide-beginners.html

That explains exactly what to do on your system to get a "safe" reliable overclock. Don't skip parts go from the top to the bottom one step at a time.

 

[SinOfLiberty]

Ok, I solved the problem by adjusting the pll voltage. I set to 1.8. Also vccio and vccsa voltages were set to 1.2. I changed it to 0.925 for vccsa and 1.05 for vccio. After that I ran prime 95 for 17 hours 40 minutes. No errors, no worries from prime 95. Pc works fine now. BTW, was it a good time period or for the complete stability i should run 24 hours?

 

[SinOfLiberty]

Thank you for your help Puppies04. I really appreciate it. I am mostly gaming, and want to cpu to work for a long time. Also I looked at your website about safe overcklock. Right now, I am having my cpu up to 4.0 ghz. I got 55-60c while prime 95. My hottest core got to 68c as a max temperature (usually it works at 66c.) Seems high to me.
My mobo is asus p67 Deluxe.

Thanks again,
RS