High voltage 2500K

[Chad29]

So I recently OC'd my 2500K to 4Ghz. Temps are OK (under 80C) with a 10min AIDA64 stability test. However my voltage spikes up to 1.396v when under load. This is a mild OC and I know it can run at a much lower voltage. The CPU voltage is set to "AUTO" in the bios and it uses offset voltage.

My specs:
2500k @ 4Ghz
Asus P8Z68-M PRO
8GB DDR3 1600Mhz RAM
450W Thermaltake PSU

 

[Star_22]

Hmm What are you asking from us, Post not clear - do you want tips as to lower the voltage or something else ? Anyway if i were you i would not try to OC using that thremaltake PSU as the chances of something failing is much higher compared to a quality PSU. Also what CPU cooler are you using? 80 C seems high to me. IIRC i used to get 4.0Ghz on my 2500K at about 1.2-1.25V ( not sure exactly but i think it was 1.21V) using a Zalman Flex cooler with temps around 65-70 in stress tests and max 60C in games. set all clocks/volts to stock and instead of AUTO voltage use a fixed voltage of 1.2 and slowly increase the multiplier 1 at a time until you find that its no longer stable while testing at a certain multiplier and then increase the fixed voltage by 0.05 or something while checking on your temps. Also i normally used OCCPT to test stability over AIDA not sure if that will give different results. Good luck but seriously go get a better 550W-650W PSU rated 80+ or something before you fry your system.

 

[Chad29]

I mainly just want to know how to lower the voltage on this motherboard. I set everything back to its default settings and my voltage still goes past 1.3v at load. There's no option for a fixed voltage, just an offset (+/-).

 

[QuantumX]

Set the offset to 0 and take it from there.

If it does 1.300v with 0 offset then to get 1.25v you know you need -0.050v offset. Offset can be seen as the difference from the default voltage, but you need to determine the default first to know where you're starting from

 

[QuantumX]

Remember to set the Load-line Calibration properly as well to eliminate vDroop. Changing vCore with vDroop all over the place will drive you mad. If you do Offset voltage adjustment you need the base (default) voltage as stable as possible so that your Offset values produce a consistent vCore value

 

[Chad29]

My mobo only has auto, enabled and disabled as options for LLC so do I set it to enabled (currently on auto)?

 

[Rickster]

Ive pushed my 2500k to 4.8Ghz, are you interested in the settings?

Temps are within a safe range 80-95.

Perfect for winter.

 

[Chad29]

Yeah definitely. Although I won't OC like that until I get a better PSU and cooler.

 

[Chad29]

Yeah definitely. Although I won't OC like that until I get a better PSU and cooler.

 

[souljazk]

Synthetic tests are great and all but they put a unrealistic load (and therefore temps) on your CPU. Rather focus on temps after 2-3hour of gaming with a CPU heavy title. Most GPU heavy titles will prob have your CPU running 10-20 degrees cooler.

 

[QuantumX]

Or do some video transcoding. Convert a high quality BluRay movie to lower quality using Handbrake. Still a real-world test but will also heat the CPU a lot so that you can get a worst case scenario for the temps

 

[Chad29]

My temps aren't the main concern ATM. I'm just trying to figure out how to lower the max voltage on stock settings. It still goes up to 1.35v at load.