Multi core enhancement - questions

know of fence

Senior member
May 28, 2009
555
2
71
Clearly, to turbo past the turbo bins is a way to auto-OC and cheat at benchmarks and comparisons. I've never heard of it, but I hope and guess that Intel put an end to this in the generations following Ivy-Bridge.
 

Zodiark1593

Platinum Member
Oct 21, 2012
2,230
4
81
Clearly, to turbo past the turbo bins is a way to auto-OC and cheat at benchmarks and comparisons. I've never heard of it, but I hope and guess that Intel put an end to this in the generations following Ivy-Bridge.
MCE is used to force maximum Turbo bins on all cores, for example, my i5-4590 w/o MCE will only turbo to 3.7 GHz on one core in a single-thread load. With MCE enabled, all four cores can hit the full 3.7 GHz turbo, even if all the cores are hammered. Technically speaking, it can be considered an overclock as your pushing past (even if slightly) Intel's spec. This can be achieved as the behavior of Turbo Boost is actually determined by the motherboard and not the cpu itself, thus Mobo manufacturers can override what Intel has determined to be proper cpu behavior. With the possible exception of the i7-4790K, this is about as "free" performance as you can get particularly with a stock cooler.

Now, in the Sandy/Ivy bridge chips, Intel allowed "locked" skus to overclock up to 4x (400 MHz) past the chip's maximum Turbo. Haswell saw that limited overclock removed. Thus locked Haswell+ skus are locked down to their maximum Turbo.
 
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Lyfer

Diamond Member
May 28, 2003
5,842
2
81
MCE is used to force maximum Turbo bins on all cores, for example, my i5-4590 w/o MCE will only turbo to 3.7 GHz on one core in a single-thread load. With MCE enabled, all four cores can hit the full 3.7 GHz turbo, even if all the cores are hammered. Technically speaking, it can be considered an overclock as your pushing past (even if slightly) Intel's spec. This can be achieved as the behavior of Turbo Boost is actually determined by the motherboard and not the cpu itself, thus Mobo manufacturers can override what Intel has determined to be proper cpu behavior. With the possible exception of the i7-4790K, this is about as "free" performance as you can get particularly with a stock cooler.

Now, in the Sandy/Ivy bridge chips, Intel allowed "locked" skus to overclock up to 4x (400 MHz) past the chip's maximum Turbo. Haswell saw that limited overclock removed. Thus locked Haswell+ skus are locked down to their maximum Turbo.

How are your temps bud with the stock cooler and MCE? I'm trying to do this with the i5 6600 non K on the Asus Z170-E. Was hoping I can save $30 by not going with an aftermarket cooler if I don't require it.