Overclocking I7 2600K

[Darklight1990]

I'm overclocking for the fist time and having some difficulties, i have a stable 4.5Ghz OC @ 1.40v (45x100) and have done a 12hr burn in test with prime 95 and temps top out at about 60 degrees celcius. i'm looking to take it a bit higher and so i have a 4.7Ghz OC @ 1.43v (45x105) and temps cap out at about 80 degrees celcius i used intel burn test on high to check it was stable but haven't done a full burn in test yet.

I'm running this on an AsRock z77 Fatal1ty proffessional series MBO, with a Noctua NH-D14.

Just a couple of questions:

1. is this voltage high for the oc? (have i struck out in the silion lottery?)

2. are the teps acceptable for air cooling? (i've ben told 90 celcius is the worry point)

3.Any suggestions?

thx for any help.

 

[Firat]

1. Thw vcore is high, is that load vcore or the vcore you set in the bios? (we have to factor in vdroop)

2. Your temps look good, but considering your vcore is high, your temps should drop if you drop the vcore.

3. you should be able to hold that clock @ 1.37v (mine is at 1.35v) on load. make sure you fiddle with vdroop so your idle and load vcore remains the same.

 

[Darklight1990]

tbh, i not sure how vdroop factors in, and the vcore is the fixed one in bios. when i check the voltage in the cpu-z it shows it jumping up to 1.44v at the start of the test and then it settles down to 1.43v

 

[Firat]

tbh, i not sure how vdroop factors in, and the vcore is the fixed one in bios. when i check the voltage in the cpu-z it shows it jumping up to 1.44v at the start of the test and then it settles down to 1.43v

So, if you set it to 1.37-1.38v does it stay at that vcore during load? im presuming you tried that so i think you may have a bad chip, so if you cant get the vcore lower then drop you clock to match a max vcore of 1.38ish

 

[Darklight1990]

no it doesn't stay it always seems to jump a bit and i'm not sure why, there an extra voltage feature on this MBO that i can't turn off and i think it might be that thas interferring.

 

[seumasbeathan]

That vcore is to high

 

[seumasbeathan]

Have you disabled e1st or c1e or whatever it is in the bios, that has the tendancy to play with the voltages

 

[marsey99]

its llc making the vcore jump up under load.

1.4v is as high as i would run my 25k 24/7 and from that i can do x48 with ease and maybe with more tweaking x49. yoours should do around the same with ht off but might need more volts or slower speed with it on idk as ymmv.

why increase the blk when going past x45? much easier to just use x46 or x48 instead of overclocking the blk.

not saying dont test with higher blk but i would only do that if you know you cants use a higher cpu multi and its the only option left you know.

 

[mundivalur]

My old 2600k only did 4.7ghz @ 1.46-7v ! but my 2700k has been @ full power Folding four 6-7 months @ 1.42-4v 5.0ghz and the cooler months @ 5.2ghz 1.47-9v WC.

so i think 1.42-4v and 70° is max for the 2xxxK 24/7 all c1e and that stuff disabled

 

[Darklight1990]

is c1e in the uefi? or do you access it in windows? and i raised the BLK because at 47 and i.43v it wouldent boot into windows, but it would that way so i dunno bad chip maybe?

 

[Darklight1990]

rigth found C1E and thats now off, speed step was always off as is turbo mode. currently on a 4.5Ghz stable at 1.38V, would turning HT off make a difference in the over all top clock speed / Volts ?

 

[mundivalur]

if you are just using the cpu for gaming then it is fine to turn HT off, that means less heat and maybe higher overclock

 

[marsey99]

yes, ht needs more volts and creates more heat.

how much and if its worth being on is up to you.

 

[Darklight1990]

might do that, i do a little video conversion now and again, but this will still be miles better that the last pc i had even with ht turned off so its probobly not a bad trade off....