New Intel cpu

Pghpooh

Senior member
Jan 9, 2000
791
1
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HI
Now sure how to ask this so here goes.
I read a few weeks ago that Intel is coming out with new cpu's that use less power and need less cooling. And, maybe smaller. Thus those new units will be great for using them in tablets, etc.
I vaguely remember they were referred to as the "M" series.
Can you give me more info on them and update me as to what they are called and when they will be out, etc.
I do remember reading that when the new cpu's are used with ssd's that combo makes for more powerful tablets and chrome book units, etc.
Thanks
Pghpooh
 

witeken

Diamond Member
Dec 25, 2013
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CPU and GPU AnandTech coverage: http://forums.anandtech.com/showthread.php?t=2394938

14nm process node: http://www.anandtech.com/show/8367/intels-14nm-technology-in-detail & http://forums.anandtech.com/showthread.php?t=2394465

IDF coverage with lots of links: http://forums.anandtech.com/showthread.php?t=2398925

TL;DC
It's the Core M, marketing name, and Broadwell-Y, code name, SoC, with a 4.5W TDP, meant as successor of the not too popular Haswell-Y CPUs and some portion of the Haswell-U CPUs. The first systems will be out in October.

There are 3 SKUs all priced the same at ~$260 or so for 1000 units. They have a cTDP of 3W, 4W, and 6W. The 5Y10(a) goes to 2GH turbo (800MHz base), the 5Y70 goes up to 2.6GHz. All three have HT. They have 24 Gen8 EUs and prices of systems will be up to $600.

You can find the announced systems in this article: http://www.anandtech.com/show/8475/intels-core-m-strategy-cpu-specifications-for-9mm-fanless-tablets
There are also some benchmarks: http://www.anandtech.com/show/8515/quick-look-at-core-m-5y70-and-llama-mountain

A bit disappointing actually that Broadwell's been in production since Q1 (yes, Q1!) of this year probably only in 1 fab and we still don't know a release date for the first available products which BK once referred to as coming close to the back to school season although it's now almost October.
 

Abwx

Lifer
Apr 2, 2011
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Products will start being available in the next few days, some config up, some 4.5W TDP, watch for the news, and please watch when comparing 6W and 4.5 , 3W configs ...

Francois
https://www.youtube.com/watch?v=FIKpypEeo7U (config up 6watt)

Can we really talk of a 4.5W TDP in the usual sense of the term.?

If it s not the case all comparisons are pointeless given that each gen seems to have another definition for the thermals.
 

Yuriman

Diamond Member
Jun 25, 2004
5,530
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Can we really talk of a 4.5W TDP in the usual sense of the term.?

If it s not the case all comparisons are pointeless given that each gen seems to have another definition for the thermals.

Regardless, these are chips that are capable of running fanless in an 8mm tablet.
 

Abwx

Lifer
Apr 2, 2011
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Regardless, these are chips that are capable of running fanless in an 8mm tablet.

Any common chip can do it as well with these kinds of power managements, you will have 200% of the perfs during a few minutes before heading to the nominal perfs allowed by the thermal dissipation of the heated whole device, would be curious to know at wich frequency the 4.5W TDP apply assuming there s no thermal headroom left.
 

witeken

Diamond Member
Dec 25, 2013
3,899
193
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Products will start being available in the next few days, some config up, some 4.5W TDP, watch for the news, and please watch when comparing 6W and 4.5 , 3W configs ...

Francois
https://www.youtube.com/watch?v=FIKpypEeo7U (config up 6watt)
Will Intel make up for this 6 month delay of 14nm by releasing 10nm 6 months earlier?


Can we really talk of a 4.5W TDP in the usual sense of the term.?

If it s not the case all comparisons are pointeless given that each gen seems to have another definition for the thermals.
The way you have to interpret TDPs is that they're the maximum guaranteed sustained power consumption the system can (should be able to) handle without throttling. So a system with a 4.5W SoC should be able to dissipate 4.5W of sustained power for a period of time (the SKU is designed to be placed in a system that is able to dissipate that amount of watts).

Fanless systems become a bit more vague because they don't have fans, so in some sense the TDP actually doesn't matter. The OEM sets the turbo states as they like, and the system will be passively cooled. In a desktop OTOH, the TDP is a bit more arbitrary and representative for the power consumption.

So what you have to do is run the benchmark a number of times until there's no more headroom for turbo and that's your highest sustained performance. If the tablet is thinner, it will throttle a bit more etc.
 

evangel76

Junior Member
Dec 14, 2008
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Will Intel make up for this 6 month delay of 14nm by releasing 10nm 6 months earlier?



The way you have to interpret TDPs is that they're the maximum guaranteed sustained power consumption the system can (should be able to) handle without throttling. So a system with a 4.5W SoC should be able to dissipate 4.5W of sustained power for a period of time (the SKU is designed to be placed in a system that is able to dissipate that amount of watts).

Fanless systems become a bit more vague because they don't have fans, so in some sense the TDP actually doesn't matter. The OEM sets the turbo states as they like, and the system will be passively cooled. In a desktop OTOH, the TDP is a bit more arbitrary and representative for the power consumption.

So what you have to do is run the benchmark a number of times until there's no more headroom for turbo and that's your highest sustained performance. If the tablet is thinner, it will throttle a bit more etc.

As an example, if you were to try to calculate the TDP of the SoC for Phone using arm cores, you would get a pretty big number, since most of them are aggressively stepping back on frequency as soon as skin temp or junction temp hit some thresholds.
The World of the PC is use to a fan, so, it was fairly easy for the PC enthusiasts to make a heat sink that was above the give TDP number, this is why we had this number. (Facilitate the OEM job and enthusiast fun)
In the tablet world, it is very different, tablet designers are designing their chassis and try to figure out how much they can dissipate, then, based on this, they compare to the IEEE MOS tables (Mean Opinion Score) for Temperatures/User experience, and set up their "TDP" based on this.

Performance = (how much you can cool the device) x ( your architecture efficiency ) x (your transistor power performance profile).

TDP in Tablet and 2 in 1 is more like a guidance, Core M was design to shave the best performance possible vs. the amount of cooling you give it. Since the 14nm transistors are best of class, the power management system is making sure it delivers the best performance in this specific form factor. Got it?

Francois
https://www.youtube.com/watch?v=FIKpypEeo7U (config up 6watt)
 

Dufus

Senior member
Sep 20, 2010
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TDP is a specification for the manufacturer to provide a minimal cooling solution, doesn't matter if it's air, water or a lump of metal. For instance if the device is rated to operate at a maximum ambient temperature of 35C and maximum rise in localized temperature of 15C then worse case local ambient = 50C so with a CPU of 4.5W and Tjmax of 95C a minimum cooling requirement of 10C/W would be needed.