4790k overclock
- Thread starter Kurgen
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4.7 is easy on a 4790k 4.8-4.9 is possible on a good chip. i could hit 5ghz for benching but not 24/7 use. keeping the thing cool is the challenge a delid really helps on a 4790k
Yes just watch those temps, the 4790K loves to get toasty. The gigabyte motherboard runs the 4790K out of spec, which can cause some heat issues when you overclock. Download the intel Extreme Tuning Utility and take specific note of the Core Voltage settings in the BIOS.
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If you're familiar with the basics of overclocking from your old X58 machine, this will actually be easier for you. Don't touch the RAM. Don't touch the BCLK. Just adjust your CPU multiplier. Usually with Haswell it is not necessary to mess with any power saving features.
Basically, adjust CPU multiplier, adjust CPU voltage, adjust CPU input voltage between 1.7 and 1.9 (Start low and work up as you find you need more) and play with load line calibration as needed. Unless you are doing a very major overclock, there's not a whole lot more to it than that.
One thing that is new is the ability to overclock cache. Get your CPU stable at the frequency you desire (remember to keep voltage as low as possible and watch your temps) then slowly dial up the cache speed until you find your max stable cache speed, with the ideal scenario being having the CPU cores and cache at the same frequency. The cache frequency does not automatically increase as you increase CPU multi- HOWEVER, some motherboards such as some by ASRock with the Z97 chipset will attempt to keep CPU and cache frequencies matched, and if this causes instability you have to deal with it.
Cheers.
Basically, adjust CPU multiplier, adjust CPU voltage, adjust CPU input voltage between 1.7 and 1.9 (Start low and work up as you find you need more) and play with load line calibration as needed. Unless you are doing a very major overclock, there's not a whole lot more to it than that.
One thing that is new is the ability to overclock cache. Get your CPU stable at the frequency you desire (remember to keep voltage as low as possible and watch your temps) then slowly dial up the cache speed until you find your max stable cache speed, with the ideal scenario being having the CPU cores and cache at the same frequency. The cache frequency does not automatically increase as you increase CPU multi- HOWEVER, some motherboards such as some by ASRock with the Z97 chipset will attempt to keep CPU and cache frequencies matched, and if this causes instability you have to deal with it.
Cheers.
Just as a note here, the recommended Core Voltage for normal operation is ~1.2V. 1.19V is possible on the Gigabyte I believe. The Turbo Boost Short Power max is about 100W. The Boost Time is about 8 seconds. Current Limit I believe is about 256A. Turbo Boost Power Max is 88W. Those are the figures you start from.