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Can You Overclock a LOCKED CPU?

Techquickie@techquickie1M viewsJul 31, 20205:01
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YT
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Learn more about Storyblocks Video at storyblocks.com Is there a way to adjust your CPU's clock speed even if it has a locked multiplier - other than manually tweaking the base clock? Leave a reply with your requests for future episodes, or tweet them here: twitter.com GET MERCH: lttstore.com SUPPORT US ON FLOATPLANE: floatplane.com LTX EXPO: ltxexpo.com AFFILIATES & REFERRALS --------------------------------------------------- Affiliates, Sponsors & Referrals: lmg.gg Get Private Internet Access VPN at lmg.gg Get a Displate Metal Print at lmg.gg Nerd or Die Stream Overlays & Templates: geni.us Support a Creator code LINUSMEDIAGROUP on Epic Games Store: lmg.gg Get a 30-day free trial of Amazon Prime at lmg.gg Our Test Benches on Amazon: lmg.gg Our Production Gear: lmg.gg FOLLOW US ELSEWHERE --------------------------------------------------- Twitter: twitter.com Facebook: @LinusTech Instagram: @linustech Twitch: twitch.tv FOLLOW OUR OTHER CHANNELS --------------------------------------------------- Linus Tech Tips: lmg.gg TechLinked: lmg.gg ShortCircuit: lmg.gg LMG Clips: lmg.gg Channel Super Fun: lmg.gg Carpool Critics: lmg.gg

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The video explains that no, you cannot unlock the multiplier on a locked CPU; the multiplier remains fixed and the only practical overclocking method is to adjust the base clock, which is tricky and unreliable on many chips. It covers how Intel and AMD handle locked CPUs, and why unlocking a chip at the factory is the standard path for true overclocking. The host clarifies that microcode controls CPU behavior, including clock speeds, and describes how past attempts like SkyOC and the later base frequency boost (BFB) exploited gaps in microcode checks to push base clocks higher. The discussion details the risks and caveats of these methods, particularly the heat and power implications, and why performance gains from base clock adjustments on locked CPUs may not match the gains seen on unlocked, K-series CPUs. The video then compares different approaches and emphasizes that BFB-like features are more for squeezing extra performance from a locked chip you already own rather than making a decision about what to buy. It concludes by noting Intel’s tightening of these loopholes and the practical expectations for users who want more performance from locked CPUs. The sponsor segment is brief and ties into B-roll resources rather than the core topic, and the video ends with a call for viewer suggestions and a reminder to subscribe. Overall, the message is cautious about overclocking locked CPUs while outlining specific, legitimate edge methods and their limitations, underscoring that true big gains come from unlocked CPUs or more capable hardware.

Topics · technology · computer_hardware · overclocking · processor · cpu · hardware_exploration

Questions answered

Can you overclock a locked CPU by adjusting the base clock, and what limitations exist?
Yes, you can sometimes raise performance on locked CPUs by adjusting the base clock, but it is limited and not as reliable as using an unlocked multiplier. The increase often comes with higher heat and power demands and may not yield the same gains as with unlocked CPUs.
What are SkyOC and base frequency boost (BFB), and do they unlock performance on locked CPUs?
SkyOC and base frequency boost are motherboard features that increase base clock or overall frequency on locked CPUs by exploiting microcode behavior. They can provide some speedups but are not guaranteed, can require stronger cooling, and may not be supported long term as manufacturers tighten restrictions.
What are the main caveats when attempting to boost performance on a locked CPU?
Key caveats include significantly higher heat output, the need for better cooling, and the possibility that gains will be modest compared with true unlocked overclocking. Also, such methods may vary in reliability and could affect system stability and warranty perceptions.