I7 4790k runs at 4.9GHz with 1.275V, but I'm here to assist you.
I7 4790k runs at 4.9GHz with 1.275V, but I'm here to assist you.
Hello, I recently experimented with boosting my reliable i7 4790k and found a good setup. I consistently reach a steady 4.9GHz at just 1.275V. The main challenge is getting the adaptive voltage to function properly. I don’t want the processor running at these high speeds constantly, preferring normal operation until it hits turbo. I’ve tried adjusting adaptive and offset settings without success.
It seems the device isn't performing well, and it's unclear why. I'm having trouble getting it to function properly.
The high-frequency chip doesn't behave like the voltage drop when switching between p-states. Keep it with full power and high frequency. When idle (no cores in use), power usage stays minimal and performance improves. Adaptive voltage control isn't applicable for operation.
Consider enabling only the active core states to cut down power use and extend CPU life. Idle cores remain in a low-power C7 mode, disconnected from the clock and voltage rails. This keeps them inactive at 0 MHz and 0 volts, which is highly efficient. By leaving the rest of the CPU running at full speed, you avoid unnecessary strain. This approach significantly reduces idle consumption and helps maintain stability during overclocking.
It's not the 10850K model you're referring to—just sharing that info. One of the first things to disable is C-states (though I meant P-states earlier). In general, a 4790K operates as a voltage monitor at around 5GHz. It's impressive he's reaching 4.9GHz with just 1.275V. Most of these chips consistently hit 1.4+ at 4.9/5.0GHz.
Adjusting voltage and power usage is possible by turning on the C states. This approach functions effectively with any Core i CPU. Why? My processor is overclocked and has C states activated. The idea that overclocking requires disabling C states is incorrect. This misconception began with the first-generation Core i release. Users enabled C states on models like the i7-920, which increased the turbo multiplier from 21 to 22. The instability was attributed to C states, but the real issue was the higher CPU speed. CPU World documented the 22 multiplier when C states were active. At the time, few understood this connection. https://www.cpu-world.com/CPUs/Core_i7/Intel-Core i7-920 AT80601000741AA (BX80601920 - BXC80601920).html Since then, C states have faced criticism among overclockers. If an overclock remains stable, it stays so even with C states enabled. Compared to adaptive voltage control, this method uses less power and offers better stability because the CPU operates at a constant speed when active. I concur. This chip performs exceptionally well if it maintains full stability at the specified voltage. The low voltage enables continuous high-speed operation whenever needed. Activating C states lets cores automatically lower their speed and voltage when idle, conserving energy while keeping performance high when required.
You're wondering if using gated cores helps reduce idle voltage. Is the 3-watt drop noticeable? Probably not a big deal. It seems possible to run at C7 and still maintain stable idle voltage. As long as it works consistently, that's enough.
Considering this, it seems the C7 voltage is likely much lower than the core he's using for overclocking. I’d probably want to negotiate with him—offer cash, trade, or something similar honestly. It’s an amazing chip!