Can't get this i7 2600k to budge when trying to oc

[natr0n]

Using a 2600k. Pretty good cpu as long as its cool and the board used is decent.

 

[qubit]

Also see if there's a BIOS update for your mobo.

 

[Vario]

Had issue with Coffee Lake and my NB frequency not overclocking past 4300 no matter the bios setting multiplier, so I tried using Intel's Extreme Tuning Utility, and sure enough it can be done. You should try using XTU and see if the speed can be changed, then you will know its a bios thing.

 

[Flow]

Also see if there's a BIOS update for your mobo.

No don't do that on a p8p67 board. I blew mine when I did this some years ago. Forced me to buy a p8z68 board, since it was too much hassle for me to get a new bios chip.
As for speedstep, I have that set at 4500Mhz, multiplier on all cores=45. I need 1.300 vcore to be stable. I use an offset vcore for this to get to that 1.300v. but you can also set a fixed vcore.
Then there is the tab next to it, advanced. Go to cpu configuration and set cpu ratio at auto, then everything below that enabled, except for limit cpuid maximum , intel virtualization technology and cpu c6 report.
That's all there is to it for a sandy 2600k and an asus p8p67 board (the z68 boards also btw).

Now, if it's still not working, or sticking after booting into windows:
use in bios optimized defaults, then use the auto oc button in the speedstep tab. It will set you around 4,4Ghz. It can be finicky though, depending on your ram sticks, auto oc tends to work better with just 2 ram sticks. I had it fail consistently with 4 ram sticks at the time.
Anyway, if it still doesn't auto oc, even with 1 ram stick inserted, chances are your board is detecting a major problem with your cpu, thus preventing the overclock. The bios will reset to default in that scenario, so if your oc settings are sticking after reboot, that shouldn't be the case.
You can also try in the advanced tab to set the cpu ratio also at 45. Same as under speedstep tab where it should also be 45.

Now ofcourse you can also start with a multi of 40 and 1.3vcore, just in case your cpu is a poor overclocker.
Goodluck.

 

[John Naylor]

Asus has gotten a bit funky with BIOS updates in recent years (circa Z87). had an instance where i was using Z87 w/ a December BIOS and December audio driver ... It was late January (27th) and they claimed it was a BIOS conflict and they wouldn't provide support until I dated B to January BIOS ... my response that how is a December driver in conflict with a BIOS that didn't come out until after it did. I updated BIOS and no change, but he did get me off the phone which is the number 1 goal of the TS supervisors.

My son's box is a P8P67 WS, It was several BIOS profiles saved fro, 4.2 to 4.8. I loaded the 4.6 as I recall you were targeting 4.5. Here's he BIOS Settings:

Overclock Tuner = Manual
BCLK/PCI Freq. = 100
Turbo Ratio = Per Core
1 Core ratio Limit = 46
2 Core ratio Limit = 46
3 Core ratio Limit = 46
4 Core ratio Limit = 46
Internal PLL Overvoltage = Auto
Memory Frequency = 1600
EPU Power Swing Mode = Enabled
EPU Settings = Auto
Load Line Calibration = High
VRM Frequency = Manual
VRN< Fixed Frequency Mode = 350
Phase Control = Extreme
Duty Control = Extreme
VCCIO Voltage = Auto
CPU PLL Voltage = Auto
PCH Voltage = Auto
All Four Data Reference Voltages = Auto
CPU Spread Spectrum = Auto
CPU Ratio = Auto
Intel Adaptive Thermal Monitor = Enabled
Hyperthreading = Disabled (He changed this, lowered CPU Temps by 7 degrees)
Active Processor Cores = All
Limit CPUID Maximum = Disabled
Execute Disabled Bit = Enabled
Enhanced Speed Step Technology = Enabled
Turbo Mode = Enabled
CPU C1E = Enabled
CPU C3 Report = Enabled
CPU C6 Report = Enabled
Intel Virtualization Technology = Disabled


NOTE: He turned off HT as he has no apps that would benefit from it and by doing so, it drops CPU temps by 7C. He is abit lazy on cleaning out the heat sink and case filters ... I mange about that each tm I get disgusted and clean them.

 

[Flow]

Games nowadays benefit from HT. Besides some extra heat it's best to have it on.
I also miss the required vcore in that list for 4.6Ghz?
Never use auto for vcore though, the board will supply too much of it if left to auto. Especially p8p67 boards.

Anyways, Internal PLL Overvoltage is for 4.8Ghz and above, so not needed for lower clocks. Ram setting manual is good yes. XMP profile is hit or miss, and left at auto can result in stability poblems.
I always set ram manual, timings included.

 

[zavrix]

Thanks for all the replys
Ok so I noticed in cpuid that It was only showing 2 cores 4 threads which is strange so thought wonder what it would show if I disabled hyper threading so did that and now it shows 4 cores 4 threads as it should with Hyper threading off and I can now overclock without issue but if I enable HT again I cant oc and it only shows 2 cores again and 4 threads which is bloody strange. So had a bit of a look around the net and and came across someone else the their cpu only showing 2 cores and after trying a lot of stuff the only thing that worked was a clean install of the os.

 

[John Naylor]

So I have been told... however no one has been able to demonstrate it as a "everday thing". .... kinda like "I tested it it and the game used 5.8 GB of VRAM. As no utility exists that measures VRAM usage, only "allocation", the only way you can do this is to use two cards with different RAM and testing them side by side. Looking at 4 test sites and 6xx, 7xx, 9xx and 10xx cards, I have yet to see it happen outside of resolutions in which the GPU was too weak to have VRAM matter. Sure you can **create** situations were it makes problem but you really have to go out of ya way to do it ... or find a terrible console port or sime such thing. I have not been able to do it with VRAM or Core usage.

I mentioned, perhaps in another thread, that I have tested this various games, staring with all 8 cores active. Then by unchecking affinity boxes 1 at a time, I kept reducing active cores 1 by 1 until fps changes. Only when I went from 4 to 3 did I see a change... a minor 1-2 fps change, IIRC Wither 3 was a bit more, maybe 2-4. The box in question includes numerous BIOS profiles, so we can and have done it both ways, with HT enabled and HT disabled. Wicther 3 and GTAV showed no difference. However, by turning HT off, temps drop by 7C ... the only way we were able to have 4.8 Ghz stay under 80C was with HT off ... granted that was with stress test so I could prolly redo now with RoG Real Bench and get it much lower. The 4.8 Ghz profile was for gaming only and results at 4.8 HT off were better than at 4.6 / 4.7 and HT on... not a lot tho. When we did a clean install a while back, (18 months ?) we looked at it again... saw no difference turning it On or OFF so he decided to leave it OFF and run cooler.

 

[Vario]

Thanks for all the replys
Ok so I noticed in cpuid that It was only showing 2 cores 4 threads which is strange so thought wonder what it would show if I disabled hyper threading so did that and now it shows 4 cores 4 threads as it should with Hyper threading off and I can now overclock without issue but if I enable HT again I cant oc and it only shows 2 cores again and 4 threads which is bloody strange. So had a bit of a look around the net and and came across someone else the their cpu only showing 2 cores and after trying a lot of stuff the only thing that worked was a clean install of the os.

That sucks. If you have a spare harddrive, try throwing a new copy of windows onto it, that way you don't risk losing your data for nothing. I'd take 4c/4t and overclock over 2c/4t and no overclock, if that is the worst case choice. At 7 years in, sooner or later you will hopefully have money and willingness to upgrade and that will solve that problem. I had unstable 1155 system myself and when I went to coffee lake, it resolved so many simultaneous bullcrap issues for me.

Another thing you can do is check to make sure you have the latest bios revision. Doing a bios flash is a matter of risk, consider your options if you go down this route. Its best to do them using a USB thumb drive and in the bios menu rather than through windows.

 

[zavrix]

Cheers, yep I have latest bios. This system still runs great for most things so don't need to upgrade just yet but thought I may as well try and oc it as I was given a 2600k where as I only had a i72600. I'm still running win7 64bit so guess the time will come when I will upgrade to the latest and greatest but until then I'm happy enough still using this and now I can get a bit more juice out of it I should see a frame rate jump in some games also.

Asus has gotten a bit funky with BIOS updates in recent years (circa Z87). had an instance where i was using Z87 w/ a December BIOS and December audio driver ... It was late January (27th) and they claimed it was a BIOS conflict and they wouldn't provide support until I dated B to January BIOS ... my response that how is a December driver in conflict with a BIOS that didn't come out until after it did. I updated BIOS and no change, but he did get me off the phone which is the number 1 goal of the TS supervisors.

My son's box is a P8P67 WS, It was several BIOS profiles saved fro, 4.2 to 4.8. I loaded the 4.6 as I recall you were targeting 4.5. Here's he BIOS Settings:

Overclock Tuner = Manual
BCLK/PCI Freq. = 100
Turbo Ratio = Per Core
1 Core ratio Limit = 46
2 Core ratio Limit = 46
3 Core ratio Limit = 46
4 Core ratio Limit = 46
Internal PLL Overvoltage = Auto
Memory Frequency = 1600
EPU Power Swing Mode = Enabled
EPU Settings = Auto
Load Line Calibration = High
VRM Frequency = Manual
VRN< Fixed Frequency Mode = 350
Phase Control = Extreme
Duty Control = Extreme
VCCIO Voltage = Auto
CPU PLL Voltage = Auto
PCH Voltage = Auto
All Four Data Reference Voltages = Auto
CPU Spread Spectrum = Auto
CPU Ratio = Auto
Intel Adaptive Thermal Monitor = Enabled
Hyperthreading = Disabled (He changed this, lowered CPU Temps by 7 degrees)
Active Processor Cores = All
Limit CPUID Maximum = Disabled
Execute Disabled Bit = Enabled
Enhanced Speed Step Technology = Enabled
Turbo Mode = Enabled
CPU C1E = Enabled
CPU C3 Report = Enabled
CPU C6 Report = Enabled
Intel Virtualization Technology = Disabled


NOTE: He turned off HT as he has no apps that would benefit from it and by doing so, it drops CPU temps by 7C. He is abit lazy on cleaning out the heat sink and case filters ... I mange about that each tm I get disgusted and clean them.

Thanks for posting this I might see if I can get this up to 4.5 stable would do me, currently have it sitting on 4 just to try it out and make sure everything is ok then I will start to bump it up

 

[Ruru]

The best overclock I've been comfortable with on my 2600K and my P67 mobo is setting bclk to 103 and multiplier to 43. Gives a decent 4.43GHz OC. I'd start with that.

I've tried aiming for 4.5GHz, but setting manual voltages always results in system instability for me (not sure why, also new to overclocking).

The life of a Sandy Bridge K-CPU starts from 4.7GHz.

I've had two 2500K's and one 2600K, and all of those hit that 4.7GHz without problems.

 

[unclewebb]

the only thing that worked was a clean install of the os.

No need to reinstall. This problem can usually be fixed by opening up msconfig. Click on the Boot tab and make sure Number of processors is not checked. After that, reboot and Windows should be able to find all of your cores and threads.

 

[eidairaman1]

i think your facing this -read here-:

https://www.reddit.com/r/intel/comments/7gxrlz

the same technology is in your MOBO " Asus crashfree BIOS"

My mobo has it, no problem.

If it has not been done already, replace the cmos battery and replash the mobo at stock factory defaults with the same bios

 

[zavrix]

No need to reinstall. This problem can usually be fixed by opening up msconfig. Click on the Boot tab and make sure Number of processors is not checked. After that, reboot and Windows should be able to find all of your cores and threads.

Awesome it worked, thanks very much. Problem solved running stable with HT enabled and overclocked at 4.2 will bump it up a little at a time until I find a nice stable oc with good temps. Once again thanks everyone for their input

 

[Vario]

Awesome it worked, thanks very much. Problem solved running stable with HT enabled and overclocked at 4.2 will bump it up a little at a time until I find a nice stable oc with good temps. Once again thanks everyone for their input

Wow that is fantastic! Good one unclewebb.

 

[Assimilator]

No need to reinstall. This problem can usually be fixed by opening up msconfig. Click on the Boot tab and make sure Number of processors is not checked. After that, reboot and Windows should be able to find all of your cores and threads.

How does that option get selected, though? It doesn't seem like something an ordinary user would purposefully select?

 

[zavrix]

I don't know but I've just found out someone else that I game with had the same issue and his cores were locked but he never figured it out before upgrading.
Any way sitting nice and stable at 4.5 and sitting about 60c or under with full load so I'm really happy.

 

[unclewebb]

How does that option get selected, though?

The Number of processors setting might get changed when switching from a 2 core CPU to a 4 core CPU. There is also an old internet myth out there that manually setting this can make your computer boot up faster. People with quad core CPUs set this to 4 which seems reasonable but if the CPU supports hyper threading, this needs to be set to 8.

Better yet, clear the Number of processors box, reboot, and let Windows find all of the available cores and threads.

 

[John Naylor]

Here's the missing CPU voltage on sons; box at 4.6 OC settings (1.216v) .... at 4.8 GHZ profile, highest core temp was 79

 

[Mussels]

that setting shows up in guides all over the place on how to 'speed up' windows, its one of those things people change following tweaking guides and forget about

 

[zavrix]

I'm not sure how it happened as I've always had a quad core in the mobo

4.6 OC settings (1.216v)

Cheers, happy at 4.5 but might bump it higher at some stage.

that setting shows up in guides all over the place on how to 'speed up' windows, its one of those things people change following tweaking guides and forget about

I guess it's possible I changed it at some stage but really can't remember doing it.