Overclocking i5 3570k
Overclocking i5 3570k
I'm trying to adjust my CPU's overclock settings and believe I may have accidentally activated OC tuner. After re-loading the standard defaults, the processor still runs at about 3.6 GHz regardless of load. Could someone assist in determining whether the default settings are being lowered properly? Understanding what needs to be checked will help me enable downclocking as required for a stable overclock. I aim for around 4.2/4.3 GHz and want flexibility to adjust clock speeds. Also, I have a P8Z77-V LK motherboard. Please let me know.
The i5-3570k can operate at 4.3GHz by adjusting just the multiplier, with all other settings kept at their factory defaults.
Enable OC in manual mode, fix all four cores to the 43 multiplier. At this frequency, disable c-states below C-3, keep c-1e/C3 active (standard sleep, not deep), turn on speedstep, cap turbo at 43, and reduce vcore to 1.19v or adjust the CPU offset accordingly.
LLC voltage should be set between 50-66% for medium to high performance, and disable CPU power phases.
Top two current limits (long and short) should be raised to 255, while the bottom two remain at their default values.
I have the same CPU and the base speed is 3.4Ghz and the Boost clock is at 3.8Ghz. Some of the motherboard mfrs had their boards run the CPUs at near boost speed. I wouldn't worry about it since the 3.6Ghz is below the full boost speed. As to the top OC you can get it depends on your CPU. All are different, you may get the speed you want or higher or less. There is no way to know for sure until to find out from testing the highest speed you can run your rig and keep it stable. Good luck!
littleleo :
I have the same CPU and the base speed is 3.4Ghz and the Boost clock is at 3.8Ghz. Some of the motherboard mfrs had their boards run the CPUs at near boost speed. I wouldn't worry about it since the 3.6Ghz is below the full boost speed. As to the top OC you can get it depends on your CPU. All are different, you may get the speed you want or higher or less. There is no way to know for sure until to find out from testing the highest speed you can run your rig and keep it stable. Good luck!
Yeah, problem is before I messed with the settings my CPU was around 1.6 at idle. I think resetting the default values might have missed something. In addition, if I OC to lets say 4.2Ghz, I'd like it to actually be able to fall back during idle rather than stay at that rate...
I believe it's called Intel Speedstep. It reduces the MHz when it's idle. I'm aware mine drops to around 800MHz when not in use. You need to enable it in the BIOS if available.
Otherwise, many motherboards disable speedstep during overclocking and also limit Turbo Boost speed, keeping it at the overclocked level constantly.
I believe it's called Intel Speedstep. It reduces the MHz when idle. I'm aware mine falls to around 800MHz when not in use. You need to enable it in the BIOS if available.
Other motherboards often disable speedstep during overclocking and also limit Turbo Boost speed, keeping it constant at the overclocked level.
Yes, I've set Intel SpeetStep Technology to enabled.
It's not due to 3.8ghz because turbo on all cores was set to 3.6 unless enhanced turbo was activated. What is the CPU usage when idle? Is speedstep enabled? Are you using cpuz to monitor performance? Hmm interesting. I probably had enhanced turbo enabled before I saw 3.8ghz under load and around 1.6 at idle. By the way, I haven't touched the BIOS in years and can't locate that setting. What I did was open the BIOS and adjust the load optimized defaults. Now my CPU is consistently stuck at 3.6ghz both idle and under load. I'm checking with Task Manager and CPUZ.
Attempted to reset CMOS. Sometimes optimized defaults are overriding auto-oscillation or affecting unrelated settings. Fixed it, thanks! Also, setting CPU to 4.2GHz seems to work but occasional stuttering occurs. Is 4.2 too high? Should I consider increasing voltage?