2500K temps

[Linkin]

Hi all. Running my brand new 2500K on the stock cooler with AS5. What are safe temps? Right now it's hitting up to 70c on the cores and "package" in HWMonitor up to 74c.

Not overclocking until I get a mobo that won't explode if I do overclock.

Cheers.

PS any tips regarding 2500K overclocking in general would be a huge help, what to set, what not to go over, etc... thanks.

[elephantman]

I'd advise to go aftermarket cooling as well.
Even a cheapie Hyper 212 will be adequate for a 2500k as they run pretty cool.

My 2500k is running at 4.5 (1.28v) on a Hyper 212 and prime/linx loads are around 60 degrees

[Linkin]

Have a H60 sitting here but not enough fan headers to use it plus two AP15's, and no 3 pin to molex adapters sadly. Got the mounting bracket and all.

[Linkin]

Well I turned off turbo core and that brought the temps down to acceptable levels for the stock cooler. Is there a specific temp I should set up for overtemp protection? Also, the CPU fan only spins at around 2000RPM, is that normal? I have it set to full speed, but it spins faster during the initial turn on as the BIOS is initialising.

[Madengineer]

Originally Posted by Linkin

Well I turned off turbo core and that brought the temps down to acceptable levels for the stock cooler. Is there a specific temp I should set up for overtemp protection? Also, the CPU fan only spins at around 200RPM, is that normal? I have it set to full speed, but it spins faster during the initial turn on as the BIOS is initialising.

You could try restricting the volts? No doubt its on Auto, and most feed more volts than is actually required. It may help reduce some heat.

[slyls1]

I run mine under a true120 with a single fan. 4.5ghz with 1.32v under load idlesl @ 30c and during a 30+ pass of ibt it hits 58c max.

[Linkin]

Originally Posted by Madengineer

You could try restricting the volts? No doubt its on Auto, and most feed more volts than is actually required. It may help reduce some heat.

The voltage is actually pretty good on auto, it hasn't gone over 1.21v and idles at around 1.016v

Originally Posted by slyls1

I run mine under a true120 with a single fan. 4.5ghz with 1.32v under load idlesl @ 30c and during a 30+ pass of ibt it hits 58c max.

I have this H60 here... I can't run push/pull with it due to lack of fan headers. I may just run it with one fan.

[cbwolf]

For day to do usage i run my 2700k at 4Ghz and have it undervolted to 1.1v. Under Prime it maxes out at 48 degrees and about 42 degrees during gaming. This is using my H80 on minimum speed.

[NNNG]

I think up to between 80 and 85 is fine for that processor. Pay attention to the temperature of the cores. I don't know what package temperature is but I know there is no actual sensor in the CPU for that, so it's not actual CPU temp, probably just calculated from some other sensor in the motherboard.

I've only overclocked with Ivy Bridge, but I do know a bit about Sandy Bridge overclocking which is very similar:

• Don't go above around 1.35 volts under load measured with CPU-Z. This is just a general guideline, if you disagree with this then you probably don't really need to be reading this anyway.
  
• Use offset voltage aka DVID to change CPU voltage. Fixed voltage might give you a higher overclock but this allows power saving options to remain enabled.
  
• Leave most power saving options enabled, except disable C3/C6 state support. Leaving it enabled can give strange voltage behaviour where voltage seems to rise with load. i.e. with it enabled running prime95 on one core will have a lower voltage than running it on four cores, which makes stability testing difficult if not impossible.
  
• Add load line calibration (LLC) for a higher voltage especially under load. Or in other words it prevents droop.
  
• If getting crashes especially at idle then increase offset voltage and decrease LLC. This will raise idle voltage but keep load voltage about the same.
  
• Enable PLL overvoltage if you cannot reach windows at or above about 47x. This is not the same as PLL voltage. Leaving it on auto will probably do this for you, but beware enabling this breaks sleep functionality.
  
• You can try lowering PLL voltage for lower temps but the difference this makes is small and IMHO not worth the effort.
  
• Don't go above around 80-85 degrees C with the cores. Coretemp and Realtemp are most commonly used but others may be fine.
  
• 4 sticks of really fast memory can be unstable, so you might need to boost one of the voltages (can't remember which) to get stable. Other than that you don't need to touch any other voltages.
  
• Use latest Prime95 or LinX for testing. Latest Prime95 uses AVX so it's much better than older versions.
  
• Make sure the socket area around the CPU gets some airflow, especially if using water cooling which tends to leave this area high and dry.
  
• Increase power and current limits to something really high like 200 watts and amperes respectively which will prevent throttling under load. It won't actually use that much, it's just a limit.
  
• Overclock using the multiplier(s). Changing BCLK can be used to some small tuning but don't change it by more than a couple of percent unless you really need to.
  
• Look up a list of common BSOD codes for Sandy Bridge processors. If you repeatedly get a BSOD that's not on this list then it's possible it is unrelated.

Also if you are using stock cooling at stock clocks and don't have crap airflow, then leave settings like turbo and fan speeds on their default settings. There's no need to disable features you payed for when it was designed to run at those clocks, with those features enabled, with that cooling, unless you want to make it quieter or something.

Anyway I think that covers about everything.

[Linkin]

Originally Posted by NNNG

I think up to between 80 and 85 is fine for that processor. Pay attention to the temperature of the cores. I don't know what package temperature is but I know there is no actual sensor in the CPU for that, so it's not actual CPU temp, probably just calculated from some other sensor in the motherboard.

I've only overclocked with Ivy Bridge, but I do know a bit about Sandy Bridge overclocking which is very similar:

• Don't go above around 1.35 volts under load measured with CPU-Z. This is just a general guideline, if you disagree with this then you probably don't really need to be reading this anyway.
  
• Use offset voltage aka DVID to change CPU voltage. Fixed voltage might give you a higher overclock but this allows power saving options to remain enabled.
  
• Leave most power saving options enabled, except disable C3/C6 state support. Leaving it enabled can give strange voltage behaviour where voltage seems to rise with load. i.e. with it enabled running prime95 on one core will have a lower voltage than running it on four cores, which makes stability testing difficult if not impossible.
  
• Add load line calibration (LLC) for a higher voltage especially under load. Or in other words it prevents droop.
  
• If getting crashes especially at idle then increase offset voltage and decrease LLC. This will raise idle voltage but keep load voltage about the same.
  
• Enable PLL overvoltage if you cannot reach windows at or above about 47x. This is not the same as PLL voltage. Leaving it on auto will probably do this for you, but beware enabling this breaks sleep functionality.
  
• You can try lowering PLL voltage for lower temps but the difference this makes is small and IMHO not worth the effort.
  
• Don't go above around 80-85 degrees C with the cores. Coretemp and Realtemp are most commonly used but others may be fine.
  
• 4 sticks of really fast memory can be unstable, so you might need to boost one of the voltages (can't remember which) to get stable. Other than that you don't need to touch any other voltages.
  
• Use latest Prime95 or LinX for testing. Latest Prime95 uses AVX so it's much better than older versions.
  
• Make sure the socket area around the CPU gets some airflow, especially if using water cooling which tends to leave this area high and dry.
  
• Increase power and current limits to something really high like 200 watts and amperes respectively which will prevent throttling under load. It won't actually use that much, it's just a limit.
  
• Overclock using the multiplier(s). Changing BCLK can be used to some small tuning but don't change it by more than a couple of percent unless you really need to.
  
• Look up a list of common BSOD codes for Sandy Bridge processors. If you repeatedly get a BSOD that's not on this list then it's possible it is unrelated.

Also if you are using stock cooling at stock clocks and don't have crap airflow, then leave settings like turbo and fan speeds on their default settings. There's no need to disable features you payed for when it was designed to run at those clocks, with those features enabled, with that cooling, unless you want to make it quieter or something.

Anyway I think that covers about everything.

Excellent, just what I was hoping for. Thanks.