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X99 OC 100% Thermal Throttling at 25 degrees

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wardog View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 31 Dec 2015 at 4:37pm
As you said, there's not a whole bunch of us that have ceramic pots and buy LN2 on a weekly basis for moonshots.

Mmmm, subscript Wink
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Post Options Post Options   Thanks (0) Thanks(0)   Quote parsec Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jan 2016 at 1:14am
Subscript... no just font size 1.

I was a chemistry major at one time, and OCD about some things.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jan 2016 at 3:50am
That's what I get for simply copying it from yours.

Back when I too dabbled as a chemistry major. So much so it took a lot of time away from attending and studying while in high school. Embarrassed

I've adjusted well though. Tongue
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jan 2016 at 3:53am
Now knock it off before Xaltar perm-bans us both!

You know how he is concerning idle chatter Geek


Edited by wardog - 01 Jan 2016 at 3:53am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Enigma Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jan 2016 at 5:54am
I can understand the logic of the slow mode switch but not as a tiny little dip switch. I'd expect it to be a larger toggle button right along with the + and - to easily press. Especially in case of an emergency. It is interesting that it just triggers thermal throttling. 

Thanks for the quick responses. It is great how fast the OC community is willing to try and help. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote parsec Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jan 2016 at 12:50pm
I assume a large switch for Slow Mode was considered unnecessary, since most owners of these boards won't ever use it. Plus a large switch adds cost for a rarely used feature.

The trick of enabling processor thermal throttling to create a locked slow speed processor mode is simply using a capability Intel built into their processors for another purpose. That is, protecting the processor from heat damage.

There are multiple types of processor thermal throttling, or levels with different behaviors for different situations. The one used for Slow Mode is a high level emergency type of thermal throttling that is close to or possibly one step before the mandatory shutdown of the processor to prevent thermal damage.

As long as the special register or bit within that register is set to On/True, the core speeds are set to their lowest value, VCore is reduced accordingly, and other processor parameters are set to low power states. Nothing else is checked to determine if throttling is no longer needed, such as core temperatures. Your core temps were well below their maximum values, but that made no difference in deactivating the throttling.

A nice fail safe mechanism that fortunately we rarely if ever experience in our use of these processors.
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