ASRock Introduces SKY OC, Overclocking for Non-K Skylake

Jeff Williams
Dec 15, 2015

Non-K Skylake CPU’s can be overclocked, though only through BCLK adjusments. It’s a fine way to get a little extra performance out of your non-K Skylake CPU. ASRock just released their own utility that’ll allow for easy adjustments of the BCLK, the SKY OC.

Related Intel Xeon Scalable Processor Family Detailed, Takes on AMD Naples Server Chips – Xeon Platinum With 28 Cores, 56 Threads and 8S+ Configuration


SKY OC is ASRock’s solution to BCLK overclocking. Capable of 60% increase in clock-speeds for non-K Skylake.

In their own tests, ASRock has seen a 60% increase in clock-speeds on an i5-6400 installed in their Z170 Pro4, just by increasing the BCLK. That’s not insignificant by any means, and since the underlying architecture is the same, non-K i5’s only missing an unlocked multiplier. There have apparently been some stock shotages, according to ASRock, on K based Skylakes, so this could be a suitable alternative if you find yourself unable to find one.

If you decide to overclock this way, the iGPU will be disabled and the turbo and any other C-states will be disabled. So you’ll be locked at that frequency and you won’t be able to put your PC into a deeper C-state. Small tradeoff’s for some decent performance gains.

SKY OC is only available on Z170 based motherboards. Below is a table of what motherboards are compatible and what BIOS you’ll need to be running.

Related AMD Ryzen Processors Live Overclocking and XFR Demos Revealed – 100 MHz XFR Boost Across All Cores on Ryzen 7 1800X Flagship Chip



Z170 OC Formula L1.92
Z170 Extreme7+ L2.16
Z170 Extreme6+ L1.82
Z170 Extreme6 L1.82
Z170 Extreme4+ L2.01
Z170 Extreme4 L2.01
Z170 Extreme3 L1.61
Z170M Extreme4 L1.34
Z170 Pro4 L2.83
Z170 Pro4/D3 L1.74
Z170 Pro4S L2.73
Z170M Pro4 L2.23
Z170M Pro4S L2.23
Z170M-ITX/ac L1.83
Z170A-X1/3.1 L1.31
Z170 Professional Gaming i7 L1.14
Z170 Gaming K6+ L1.92
Z170 Gaming K6 L1.92
Z170 Gaming K4 L2.23
Z170 Gaming K4/D3 L1.51
Z170 Gaming-ITX/ac L1.53