i5 2500k Turbo OC faces issues with Vcore control and maintaining optimal temperatures.
i5 2500k Turbo OC faces issues with Vcore control and maintaining optimal temperatures.
Hello. I'm looking to carry out a Turbo overclock for my i5 2500k. The issue I'm facing is that I can't find any instructions for setting the Turbo frequency to 4.5GHz. Do anyone have a good guide or have done this before and could guide me through it?
Here are my relevant specifications:
CPU: i5 2500k
Cooler: Cooler Master Hyper 212 EVO
Motherboard: GIGABYTE GA-Z68A-D3H-B3
PSU: PC Power & Cooling ZT Series 750 Watt
RAM: G.SKILL Ripjaws Series 8GB (2 x 4GB) Timing 9-9-9-24-2N, Voltage 1.5V
I've attached screenshots of my BIOS at the default settings. I explored every menu and submenu:
main: [link to image]
M.I.T. current status: [link to image]
Advanced Frequency settings: [link to image]
Advanced CPU core features: [link to image]
Advanced Memory settings: [link to image]
Advanced Voltage settings: [link to image]
I've tried everything so far and will update as I experiment further.
Default setting: [link to image]
It's worth noting that the CPU Vcore stays between 1.2 and 1.212V.
Test 1 - I set Turbo to 4.5GHz per core, leaving all other settings at default:
[link to image]
I observed the CPU Vcore rising to 1.392V, which would have increased further if I extended p95 testing. CPU temperature was 81°C, with core temperatures ranging from 81-92°C.
After restarting the BIOS and checking again, my Vcore reached 1.404V.
I'm stuck on how to control the maximum Vcore setting. The guides suggest a limit of around 1.35V, but I'm unsure if that's the right target or if my cooling is insufficient. My individual core temperatures peaked at 92°C under load. Are my cooling solutions adequate or is the Vcore too high?
Edit 1: Instead of using auto Vcore to jump to 4.5GHz, I increased it from the default 3.4 to 3.5 and set Dynamic Vcore to 0.00. This was supposed to lock the Vcore at its maximum. However, the jump from 3.4 to 3.5 caused the Vcore to rise above 100% load conditions from the default 1.212V to 1.224V. When I increased it further to 3.6, it reached 1.260V. My question is: should it remain at 1.212V regardless of changes?
Any advice on suitable settings would be appreciated.
DVID (Dynamic Vcore) lets you adjust voltage in either direction from the stock level, it auto-adjusts so it can change freely. Start with +0.00v and confirm it boots normally. Perform some tests to verify stability; personally I dislike P95. I use CPUID in stress mode and Cinebench. Once stable, you can start overclocking—maybe increase DVID, though that depends on your overclock distance. If you're satisfied with the default settings, this should resolve your problem.
After spending six hours adjusting all the settings, nothing I do affects my Vcore control. It doesn't matter what I tell the system about my Dynamic Vcore; it still decides automatically without my input. I'm not sure if my board is faulty or if this model isn't designed for user customization. Anyone have suggestions?
You can adjust the VCore that isn't shown in your voltage settings picture, and also turn on Load Line Calibration. I would normally turn off Turbo boost at 2500k, preferring to set OC manually to 4.5GHz for stability. Once stable, you could then reactivate power-saving modes to lower clock speeds and VCore during idle times.
You can adjust the VCore that isn’t listed in your voltage settings picture, and also turn on Load Line Calibration. I would normally turn off Turbo boost at 2500k and set OC manually to 4.5GHz for stability, then enable power-saving modes later to lower clock speeds and VCore when idle. I’m unsure how to change the VCore directly since the screenshots only showed default values. Anyone who helped could suggest using the standard settings on the motherboard. I disabled Turbo and all power-saving features, gradually increasing my clock speed by 0.1 each time, but my VCore kept rising even after changing it in settings. I also tried Load Line Calibration levels 1 and 2, but VCore still increased despite setting Dynamic Vcore to +0.00. If something is wrong, could you explain more?
DVID (Dynamic Vcore) lets you adjust voltage relative to the stock level, with auto mode allowing it to change freely. Start at +0.00v and confirm it boots normally. Perform tests to verify stability; personally I dislike P95. Use CPUID in stress mode and Cinebench for checks. Once stable, consider increasing DVID if needed—depends on your overclocking goals. If you're satisfied with the default settings, this should resolve your concerns.