Intel Broadwell Thread

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jpiniero

Lifer
Oct 1, 2010
14,841
5,456
136
What about normal voltage non-Y / non-U laptop Broadwell series?

Are they coming? If so when? Or they like desktops are omitted and there is Haswell->Skylake transition planned?

Sure looks like the 35 W M line is dead. The 28 W U line pretty much replaces it.
 

Dufus

Senior member
Sep 20, 2010
675
119
101
Sure looks like the 35 W M line is dead. The 28 W U line pretty much replaces it.

Whoa, a recap on the last generation first.

http://forum.notebookreview.com/har...swell-ult-throttleing-design.html#post9652190
HTWingnut said:
Yeah it kind of sucks. My Sony Vaio Pro 11 can actually perform decently but the iGPU throttles like crazy, so while it could game, there can be massive FPS spikes, and the CPU isn't even that hot, less than 70C. It seems to me that they way underrated the TDP. The Intel "U" CPU's should probably be more like 25W than 15W to perform as needed.


http://forum.notebookreview.com/thi...mance-boost-due-unlocked-tdp.html#post9880500
Fabians said:
Unhappy with the severe tdp throttling of my X1 (4550U) under continuous stress
This user has managed to bring his 15W power limit towards 20W with temps below 76C resulting in following bench scores.

Cloud Gate 4360 -> 5004
Fire Strike 658 -> 768
Ice Storm 35290 -> 48111


Well, considering how the 15W SKU BDW-U throttles with the laptop manufacturers 15W limit perhaps the 28W SKU CPU's will too, really needing 37W to run unhindered. Time will tell.

BDW-U i7-5500U 3DMark Vantage of P5423
Again, power throttled to 15W. Wonder how much of a difference a 20-25W power limit would make, seems to be plenty of thermal headroom.
 

Sweepr

Diamond Member
May 12, 2006
5,148
1,142
131
Some interesting info:

AnandTech said:


28W with GT3, Iris 6100 Graphics (48 Execution Units)
15W with GT3, HD 6000 Graphics (48 Execution Units)
15W with GT2, HD 5500 Graphics (23 Execution Units for low i3, 24 for others)
15W with GT1, HD (Broadwell) Graphics (12 Execution Units)



‘DirectX 12 Ready’ is somewhat of an interesting case, and it depends on Microsoft’s final specifications. At this point in time Intel state that they conform to as much of DirectX 12 feature set that they can get their hands on with their relationship with Microsoft, and barring any major addition or change, should be compatible. UHD-4K is also now supported through the HDMI 1.4b interface, albeit limited to 24 Hz.

For Broadwell, Intel has reduced the number of EUs in a sub-slice from 10 down to 8. This is a big change, as it eases up the Thread Dispatch, Data Port and L1/L2 samplers in each EU as they have to deal with less data overall. By this logic, with two equivalent designs, one with 8 EUs per sub-slice should be able to get through more data due to less data bandwidth pressure and less competition for each sub-slice’s shared local memory.


In our conference call with Intel, it was clear that these CPUs are shipping to their partners today. Throughout CES there will be a number of manufacturers announcing their products, and as per the norm Intel allows the partners to introduce their own products, rather than showing examples of where Broadwell-U fits in. However, because Broadwell-U is designed to be pin-compatible with Haswell-U, we might see some manufacturers purely re-releasing some of their designs with the newer CPU and a firmware update. Nevertheless, Intel is expecting OEM systems with Broadwell-U to start shipping in North America within the month. Designs with Iris graphics, or those featuring Intel based WiGig connectivity, will be more towards the end of Q1. Overall Intel is tracking ‘hundreds of designs’ involving Broadwell, indicating that it will be a significant push to bring 14nm to the market.





More here: http://www.anandtech.com/show/8814/intel-releases-broadwell-u-new-skus-up-to-48-eus-and-iris-6100
 

Eug

Lifer
Mar 11, 2000
23,752
1,285
126
I'm a little confused about the GPU specs.

What does this mean practically for those of us who don't game?

1) Do I really get HEVC H.265 decode acceleration of say 4K material even on lower end SKUs? I don't really need 4K since it's superfluous for me, but nonetheless 4K material is starting to trickle out and I'd like to be able to play it. It's similar to the situation before where I was using 720p screens, but wanted good 1080p AVC H.264 support so I didn't have to pick and choose my video sources.

2) What about external Retina monitor support? Can I run a 22" 3840x2160 screen with no lag?

3) Do these SKUs make sense if I want to buy a Retina MacBook Pro, but with a smaller form factor than the current MacBook Pros? Think 13" MacBook Air size, but with MacBook Pro power and Retina, with long battery life. I realize there is also the rumoured 12" MacBook Retina, but I'm getting the impression it will replace the Airs, and if so, maybe in some way will be crippled.
 

witeken

Diamond Member
Dec 25, 2013
3,899
193
106
A bit strange that they're talking about DX12 ready, while Maxwell simply supports DX12 and Haswell already supports DX12 too. Also interesting that they disable 1 EU <= i3.
 

ShintaiDK

Lifer
Apr 22, 2012
20,378
145
106
A bit strange that they're talking about DX12 ready, while Maxwell simply supports DX12 and Haswell already supports DX12 too. Also interesting that they disable 1 EU <= i3.

It is a bit of a mess, since there is 2 types of DX12 support. But the list is as follows.

GCN=DX11.1, DX12 API reduction.
Haswell DX11.1, DX12 API reduction.
Broadwell DX11.2, DX12 API reduction.
Fermi DX11.0, DX12 API reduction.
Kepler DX11.0, DX12 API reduction.
Maxwell DX11.3, Full DX12 API.
 

bullzz

Senior member
Jul 12, 2013
405
23
81
@witeken - i dont think they disabled a EU for i3s. like mentioned in AT article, it must be for selling defective chips
 

witeken

Diamond Member
Dec 25, 2013
3,899
193
106
http://www.anandtech.com/show/8831/intel-shipping-14nm-cherry-trail

has anyone seen any specifications released on cherrytrail? all i am seeing is this vague writeup.

Cherry Trail is a quadcore SoC consisting of 2.7GHz 14nm Airmont (slightly upgraded Silvermont) cores and 16 Gen8 EUs (2 sub-slices), presumably clocked higher than a fanless system can dissipate.

It would have been a great SoC in 2014, but now with Mobile Maxwell, not so exciting anymore.
 

liahos1

Senior member
Aug 28, 2013
573
45
91
Cherry Trail is a quadcore SoC consisting of 2.7GHz 14nm Airmont (slightly upgraded Silvermont) cores and 16 Gen8 EUs (2 sub-slices), presumably clocked higher than a fanless system can dissipate.

It would have been a great SoC in 2014, but now with Mobile Maxwell, not so exciting anymore.

so vs the 3770 we can expect 13% improvement in turbo clock + ~5% on ipc ~18% on total cpu peak performance.

4x gpu EUs (2/3 of core m). how could performance be there.

If i look at this



core m y70 is getting 21350 vs 3770 getting 11060
if i take 66% of the y70 eus (24 vs 16 in cherrytrail) i can get to ~14233 vs something like an ipad air 1 getting 19000

so where does that leave cherrytrail product positioning? Is this destined for mid end devices? I think thats where Intel has been positioning but wanted to make sure I am understanding it correctly.
 

witeken

Diamond Member
Dec 25, 2013
3,899
193
106
Cherry Trail will cover everything from low-end to high-end of the tablet market, until SoFIA 14nm takes over at the low-end (SoFIA 2) and the mid-end (SoFIA MID) and Broxton at the high-end.
 

Eug

Lifer
Mar 11, 2000
23,752
1,285
126
I'm a little confused about the GPU specs.

What does this mean practically for those of us who don't game?

1) Do I really get HEVC H.265 decode acceleration of say 4K material even on lower end SKUs? I don't really need 4K since it's superfluous for me, but nonetheless 4K material is starting to trickle out and I'd like to be able to play it. It's similar to the situation before where I was using 720p screens, but wanted good 1080p AVC H.264 support so I didn't have to pick and choose my video sources.

2) What about external Retina monitor support? Can I run a 22" 3840x2160 screen with no lag?

3) Do these SKUs make sense if I want to buy a Retina MacBook Pro, but with a smaller form factor than the current MacBook Pros? Think 13" MacBook Air size, but with MacBook Pro power and Retina, with long battery life. I realize there is also the rumoured 12" MacBook Retina, but I'm getting the impression it will replace the Airs, and if so, maybe in some way will be crippled.
Answering some of my own questions.

1. Some Googling seems to suggest that because of Broadwell's rudimentary H.265 support, 4K is out of the question, at least for lower end SKUs.

2. 2160p60 is supported even on the Broadwell U line, although only with 1 monitor.
 

liahos1

Senior member
Aug 28, 2013
573
45
91
Asus products looking good









the 300 chi looks very interesting at 699. It looks like a straight llama mountain product. 720g for the whole product? I wonder how much the tablet itself weighs.

edit, nm the tablet weighs 720g. still very light for a 12.5inch device
 
Last edited:

dahorns

Senior member
Sep 13, 2013
550
83
91
so vs the 3770 we can expect 13% improvement in turbo clock + ~5% on ipc ~18% on total cpu peak performance.

4x gpu EUs (2/3 of core m). how could performance be there.

If i look at this



core m y70 is getting 21350

I'd be wary of making too many conclusions based on that chart.

Notebookcheck's review of the 5y10 has it getting 39,000 in Ice Storm Standard, and nearly 46,000 for graphics.

http://www.notebookcheck.net/Dell-Venue-11-Pro-7140-Convertible-Tablet-Review.133634.0.html
 

el etro

Golden Member
Jul 21, 2013
1,581
14
81
Intel will get my dream come true faster.

My dream is a 45W TDP cpu that can drive all videocard of its time(as a example, a 45W Haswell i7 driving with zero bottleneck a R9295x2)...
 

III-V

Senior member
Oct 12, 2014
678
1
41
Answering some of my own questions.

1. Some Googling seems to suggest that because of Broadwell's rudimentary H.265 support, 4K is out of the question, at least for lower end SKUs.

2. 2160p60 is supported even on the Broadwell U line, although only with 1 monitor.
I definitely would appreciate the bandwidth savings H.265 would bring.
 

erunion

Senior member
Jan 20, 2013
765
0
0
Intel will get my dream come true faster.

My dream is a 45W TDP cpu that can drive all videocard of its time(as a example, a 45W Haswell i7 driving with zero bottleneck a R9295x2)...

They have had that for many years.


http://ark.intel.com/products/family/75023/4th-Generation-Intel-Core-i7-Processors#@Mobile
and
http://ark.intel.com/products/family/75022/4th-Generation-Intel-Core-i7-Extreme-Processor#@Mobile


But I have to ask, why is that more appealing than 77W/84W processor?
 

Nothingness

Platinum Member
Jul 3, 2013
2,757
1,405
136
There's a very good news that got unnoticed it seems: both Pentium and Celeron U have AVX support, at last! I hope it's full AVX2.

Of course Intel found a way to look dumb by not letting AES-NI in, which will prevent the use of these for NAS
 
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