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uL7iMa

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  1. <strike>2014 15" Macbook Pro with i7-4980HQ 2.8-4.0Ghz 47W CPU hitting 66.55W - it's TDP unlocked!!

    Any OEM manufactures reading this thread take now. Apple impresses yet again, removing performance restrictions that other PC notebook vendors impose.

    We can see at 57s in the video below, a 2014 15" rMBP quad-core machine with GTX780Ti eGPU sees the CPU hitting 66.55W TDP and over 100 degrees temps at 3.5Ghz 4-cores. This means it is TDP unlocked and is only temperature throttled. </strike> Had this user applied a -80mV undervolt, as is available on Haswell CPUs using either Throttlestop or XTU, he'd be hitting the 3.8Ghz 4-core max. There may be potential to go further given the CPU has an additional 6 unlockable turbo bins (4.4Ghz max 4-core) by applying improved cooling and undervolting.

    Cooling could be improved by drilling some holes on the undercarriage and/or sitting the machine on a notebook cooler.

    <strike>I wish Elitebook/Zbook/Latitude/Precision/Thinkpads and ASUS gaming/business PC notebooks gave their systems the same flexibility. They bios-lock their systems to the nominal CPU TDP, which would be 47W here. That would net ~500Mhz less 4-core performance . This rMBP has gaming cred. Even more so with the upcoming Broadwell version with a more efficient 14nm CPU.</strike>

    Update: CPU hits a max of 48W TDP at 59s. The 66W value was a short burst only.

    With reference to this post, is it still viable to undervolt the CPU in the rMBP to achieve the 3.8ghz max? Has anyone attempted this?

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