Intel Skylake / Kaby Lake

[Dave3000]

If the official specs of the 6700k is going to have a 4.2 GHz turbo boost as factory default for 4-core loads like the presample mentioned in this article that will be great. I don't care about overclockability so I don't care how well they are going to overclock as I used my PC for work as well and need reliability and stability, and I want the fast stock speeds so 4.2 GHz on all cores stock would be great for me, as long as it does not throttle during full loads and does not overheat. I have an i7-4930k but I want faster ST performance. I just might switch to a 6700k when it releases or shortly after.

http://www.cpu-monkey.com/en/cpu-intel_core_i7_6700k-518

 

[Fjodor2001]

I think Skylake-Y, like Broadwell-Y, is Core-M. They are one and the same.

I'm assuming the products I linked are Sky-lake Y because they share the same model as this one: http://browser.primatelabs.com/geekbench3/2637682

The only difference is the stepping (2 vs 3). The scores are also very comparable.

Ok, now I see. Sounds reasonable.

If it's really 2.3 GHz base clock at 4.5 W TDP that'll be impressive. But that's 2x the current Broadwell Y Core M max base clock of 1.2 GHz. So can it really be true?

 

[coercitiv]

If it's really 2.3 GHz base clock at 4.5 W TDP that'll be impressive. But that's 2x the current Broadwell Y Core M max base clock of 1.2 GHz. So can it really be true?

Short answer is nope. Maybe 6-9W.

Double the base speed equals more than double the power, so one would need more than 60% reduction in power usage for this scenario to come to fruition.

 

[Dufus]

It is strange indeed, but having the values from the Maximum column kinda defeats the purpose.

Depends whether processor controlled throttling was activated. Given the poor bench results makes one wonder. Processor controlled throttling basically duty cycles halt cycles for the processor. For instance with a 50% duty clocks will run for a few microseconds then stop for a few microseconds.

Here's what can happen when running 100% duty during prime95 on all threads at 3GHz and then switching to 50% duty throttling as an example.

HWiNFO reads only active core frequency as many softwares do and shows the processor running at 3GHz without any drop. What I personally find disagreeable with HWiNFO is that IMHO thread usage should be shown as percentage of when the core(S) is/are active, IOW when in C0. If it did that it would shown 50% instead of 100%. Perhaps the author decided to show scheduling percentage of the OS dispatcher instead. Anyway you can clearly see the package energy drop after 50% throttling is applied from 47 Joules to 37 Joules.

Perhaps a better example would be Linpack. Here I have let Linx run 6 problems at 3GHz with one thread per core. Starting with 100% duty then activating 50% duty after the 3rd run. Since we have a score for this test results can be seen a lot clearer with GFLOPS dropping from 168 to 80.

The package power graph shows the 3 peaks at 100% duty at 62J then three more at 41J after activating 50% duty.

I am not saying this is what happened but something that needs to be considered when looking at results. A lot of manufacturers also only install one SODIMM in laptops and single channel can have an effect on performance too.

 

[mikk]

Short answer is nope. Maybe 6-9W.

Double the base speed equals more than double the power, so one would need more than 60% reduction in power usage for this scenario to come to fruition.

Base clock doesn't differ not matter how TDP is configured. Difference is in Turbo.

 

[coercitiv]

Base clock doesn't differ not matter how TDP is configured. Difference is in Turbo.

With configurable TDP it is exactly the other way around: base clocks change, turbo stays the same.

On another note I was just answering to Fjodor's question/comparison: doubling base clocks at the same TDP requires more than 50% power reduction.

 

[Fjodor2001]

Short answer is nope. Maybe 6-9W.

Double the base speed equals more than double the power, so one would need more than 60% reduction in power usage for this scenario to come to fruition.

Are there any devices currently that use the 6-9 W TDP range?

I thought we only had 4.5 W and ~15 W. If a laptop goes much beyond 4.5 W it cannot be made fanless anyway, so it could just as well be stepped up to ~15 W.

 

[coercitiv]

If a laptop goes much beyond 4.5 W it cannot be made fanless anyway, so it could just as well be stepped up to ~15 W.

Sure about that?
Macbook 12 power consumption (Core M-5Y31)

Idle - 2-6 Watts (max brigthness, wi-fi on)
Peak - 29W (probably limited to 30s burst)
Sustained power usage - 19W

The press mentioned Core M can be configured to work at 3-6W TDP, but I'm willing to bet higher values in the range of 9-11W are also available.

 

[Fjodor2001]

Sure about that?
Macbook 12 power consumption (Core M-5Y31)

Idle - 2-6 Watts (max brigthness, wi-fi on)
Peak - 29W (probably limited to 30s burst)
Sustained power usage - 19W

The press mentioned Core M can be configured to work at 3-6W TDP, but I'm willing to bet higher values in the range of 9-11W are also available.

Ok, but they you might as well consider 88 W 4790K CPUs to be 6-9 W, because at idle they'll reach that low.

 

[Azuma Hazuki]

Did anyone else notice an i5 model with a Q designation in that list for the mobile parts? That sounds to me like that have a 4c/4t mobile i5 in the works...exciting prospect.

 

[jpiniero]

Did anyone else notice an i5 model with a Q designation in that list for the mobile parts? That sounds to me like that have a 4c/4t mobile i5 in the works...exciting prospect.

HQ means Iris Pro; so it'd wouldn't be cheap even with only the i5 branding. There's also an i3 H model... which given that the H line is only (?) a quad core die makes me wonder if it's triple core.

 

[Dufus]

Ok, but they you might as well consider 88 W 4790K CPUs to be 6-9 W, because at idle they'll reach that low.

TDP is a specification for Intels worse case scenario to provide a minimal cooling solution, not the maximum (or minimum) power the CPU can draw.

For instance at defaults my mobile i7-4700MQ with a 47W TDP will draw somewhere near 47W running Linpack AVX2 at the HFM (base frequency) of 24x and significantly more at turbo bins of 32x. Overclocked it can draw more than 100W even without using AVX.

 

[Fjodor2001]

TDP is a specification for Intels worse case scenario to provide a minimal cooling solution, not the maximum (or minimum) power the CPU can draw.

For instance at defaults my mobile i7-4700MQ with a 47W TDP will draw somewhere near 47W running Linpack AVX2 at the HFM (base frequency) of 24x and significantly more at turbo bins of 32x. Overclocked it can draw more than 100W even without using AVX.

Sure, but the main issue is at what TDP Skylake Y Core M continuously can reach 2.3 GHz base clock? 4.5 W, 9 W, 15 W, 45 W, ...?

 

[IntelUser2000]

HQ means Iris Pro; so it'd wouldn't be cheap even with only the i5 branding. There's also an i3 H model... which given that the H line is only (?) a quad core die makes me wonder if it's triple core.

Being an H doesn't rule out being a dual core.

http://ark.intel.com/products/75027/Intel-Core-i5-4200H-Processor-3M-Cache-up-to-3_40-GHz

Anyway, they cut the prices of the Crystalwell parts slightly so that the difference compared to non-Crystalwell parts are now $56, rather than being $90 as in the launch. If the die sizes get smaller and more chips are produced we might see that reduced to $30-40, which is lot more acceptable. Of course, they need to address other problems like having worse perf/watt than discrete graphics parts.

 

[coercitiv]

Sure, but the main issue is at what TDP Skylake Y Core M continuously can reach 2.3 GHz base clock? 4.5 W, 9 W, 15 W, 45 W, ...?

And I already answered you: 4.5W for 2.3Ghz would require over 60% power reduction relative to Broadwell, which is not possible.

The Skylake-Y in that bench was either at turbo speeds or configured at higher TDP than 4.5W (likely the latter)

 

[Grant7]

I am looking for any OFFICIAL informations about Skylake Celeron, Pentium and Core i3 for desktop, and I can't find nothing about it. Each slide/image applies only to Core i5/i7. Each piece of information is about Core i5/i7. Is there ANYTHING official, about Skylake Celeron, Pentium and Core i3 for desktop?

 

[bullzz]

@Grant7 - skylake has not been officially announced yet for the most part. skylake celeron,pentium,i3 are pretty much a given at this point. im expecting them to available q3/q4

 

[AtenRa]

im expecting them to available q3/q4

Q1 2016 onwards.

 

[Sweepr]

Intel NUC Consumer Roadmap - Skylake

✓ Intel 6th Generation Core i3 / i5-6xxxU (15W TDP)
✓ Dual-channel DDR4 SODIMMs 1.2V, 1866 MHz (32GB max)
✓ Intel HD Graphics 6xxx
✓ 1 x mini HDMI 1.4a
✓ 1 x mini DisplayPort 1.2
✓ 2 x USB 3.0 ports on the back panel
✓ 2 x USB 3.0 ports on the front panel (1 x charging capable)
✓ 2 x Internal USB 2.0 via header
✓ Internal support for M.2 SSD card (22x42 or 22x80)
✓ Internal SATA3 support for 2.5" HDD/SSD (up to 9.5mm thickness)
✓ SDXC slot with UHS-I support on the side
✓ Intel 10/100/1000Mbps Network Connection
✓ Intel Wireless-AC xxxx M.2 soldered-down, wireless antennas
✓ IEEE 802.11ac, Bluetooth 4, Intel® Wireless Display
✓ Up to 7.1 surround audio via Mini HDMI and Mini DisplayPort
✓ Headphone/Microphone jack on the front panel
✓ Consumer Infrared sensor on the front panel
✓ 19V, 65W wall-mount AC-DC power adapter
✓ OS certs: Windows 10, 8 & 8.1
✓ OS compatibility: Ubuntu, Linux Mint, Fedora, OpenSUSE

Source: www.fanlesstech.com/2015/05/exclusive-skylake-nuc-specs.html

 

[Dice144]

I just got the broadwell i3 NUC. Building a mini system for my Uncle. Soon as I get out of work going to try some Starcraft 2 8-12 player maps.

 

[Dufus]

Sure, but the main issue is at what TDP Skylake Y Core M continuously can reach 2.3 GHz base clock? 4.5 W, 9 W, 15 W, 45 W, ...?

Not at what TDP, at what power. TDP is just a specification and as such more of a guideline.

 

[teejee]

Intel NUC Consumer Roadmap - Skylake

Source: www.fanlesstech.com/2015/05/exclusive-skylake-nuc-specs.html

No HDMI 2.0, so NUC will go from being an excellent choice for a HTPC build in 2014 to being an obsolete choice for a build in 2016.
Building a HTPC in 2016 without proper 4K support is not an option for me.

 

[MongGrel]

I'm still waiting to see what happens myself I guess.

Just riding the old Westmere EP till then, on a couple.

:thumbsup::thumbsup:

 

[ShintaiDK]

The no HDMI 2.0 must be an error. Unless TV manufactors will start shipping with DP ports.

I really need a NUC as HTPC replacement, but I am not buying one that cant power a TV in 4K60hz one way or the other.

Seems DP 1.2 to HDMI 2.0 converters are to come out any moment now tho. So maybe there is hope that way.
http://translate.google.co.kr/trans...hdmi_2_0_chez_bizlink-749111.html&prev=search

 

[Bolshoi Booze]

nice to see skylake U launching quarter 3

I hope MS picks skylake not broadwell as SP4 CPU