Intel's 10nm Cannon Lake and Core i3-8121U Deep Dive Review
by Ian Cutress on January 25, 2019 10:30 AM ESTStock CPU Performance: Encoding Tests
With the rise of streaming, vlogs, and video content as a whole, encoding and transcoding tests are becoming ever more important. Not only are more home users and gamers needing to convert video files into something more manageable, for streaming or archival purposes, but the servers that manage the output also manage around data and log files with compression and decompression. Our encoding tasks are focused around these important scenarios, with input from the community for the best implementation of real-world testing.
All of our benchmark results can also be found in our benchmark engine, Bench.
Handbrake 1.1.0: Streaming and Archival Video Transcoding
A popular open source tool, Handbrake is the anything-to-anything video conversion software that a number of people use as a reference point. The danger is always on version numbers and optimization, for example the latest versions of the software can take advantage of AVX-512 and OpenCL to accelerate certain types of transcoding and algorithms. The version we use here is a pure CPU play, with common transcoding variations.
We have split Handbrake up into several tests, using a Logitech C920 1080p60 native webcam recording (essentially a streamer recording), and convert them into two types of streaming formats and one for archival. The output settings used are:
- 720p60 at 6000 kbps constant bit rate, fast setting, high profile
- 1080p60 at 3500 kbps constant bit rate, faster setting, main profile
- 1080p60 HEVC at 3500 kbps variable bit rate, fast setting, main profile
7-zip v1805: Popular Open-Source Encoding Engine
Out of our compression/decompression tool tests, 7-zip is the most requested and comes with a built-in benchmark. For our test suite, we’ve pulled the latest version of the software and we run the benchmark from the command line, reporting the compression, decompression, and a combined score.
It is noted in this benchmark that the latest multi-die processors have very bi-modal performance between compression and decompression, performing well in one and badly in the other. There are also discussions around how the Windows Scheduler is implementing every thread. As we get more results, it will be interesting to see how this plays out.
Please note, if you plan to share out the Compression graph, please include the Decompression one. Otherwise you’re only presenting half a picture.
WinRAR 5.60b3: Archiving Tool
My compression tool of choice is often WinRAR, having been one of the first tools a number of my generation used over two decades ago. The interface has not changed much, although the integration with Windows right click commands is always a plus. It has no in-built test, so we run a compression over a set directory containing over thirty 60-second video files and 2000 small web-based files at a normal compression rate.
WinRAR is variable threaded but also susceptible to caching, so in our test we run it 10 times and take the average of the last five, leaving the test purely for raw CPU compute performance.
AES Encryption: File Security
A number of platforms, particularly mobile devices, are now offering encryption by default with file systems in order to protect the contents. Windows based devices have these options as well, often applied by BitLocker or third-party software. In our AES encryption test, we used the discontinued TrueCrypt for its built-in benchmark, which tests several encryption algorithms directly in memory.
The data we take for this test is the combined AES encrypt/decrypt performance, measured in gigabytes per second. The software does use AES commands for processors that offer hardware selection, however not AVX-512.
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qcmadness - Saturday, January 26, 2019 - link
I am more curious on the manufacturing node. Zen (14 / 12nm from GF) has 12 metal layers. Cannon Lake has 13 metal layers, with 3 quad-patterning and 2 dual patterning. How would these impact the yield and manufacturing time of production? I think the 3 quad-patterning process will hurt Intel in the long run.KOneJ - Sunday, January 27, 2019 - link
More short-run I would say actually. EUV is coming to simplify and homogenize matters. This is a patch job. Unfortunately, PL analysis and comparison is not an apples-to-apples issue as there are so many facets to implementation in various design stages. A broader perspective that encompasses the overall aspects and characteristics is more relevant IMHO. It's like comparing a high-pressure FI SOHC motor with a totally unrelated low-pressure FI electrically-spooling DOHC motor of similar displacement. While arguing minutiae about design choices is interesting to satisfy academic curiosity, it's ultimately the reliability, power-curve and efficiency that people care about. Processors are much the same. As a side note, I think it's the attention to all these facets and stages that has given Jim Keller such consistent success. Intel's shaping up for a promising long-term. The only question there is where RISC designs and AMD will be when the time comes. HSA is coming, but it will be difficult due to the inherent programming challenges. Am curious to see where things are in ten or fifteen years.eastcoast_pete - Sunday, January 27, 2019 - link
Good point and question! With the GPU functions apparently simply not compatible with Intel's 10 nm process, does anyone here know if any GPUs out there that use quad-patterning at all?anonomouse - Sunday, January 27, 2019 - link
@Ian or @Andrei Is dealII missing from the spec2006fp results table for some reason? Is this just a typo/oversight, or is there some reason it's being omitted?KOneJ - Sunday, January 27, 2019 - link
Great write up, but isn't this backwards on the third page?"a 2-input NAND logic cell is much smaller than a complex scan flip-flop logic cell"
"90.78 MTr/mm^2 for NAND2 gates and 115.74 MTr/mm^2 for Scan Flip Flops"
NAND cell is smaller than flip-flop cell, but there is more flip-flop than NAND in a square millimeter?
Or am I missing something?
Rudde - Sunday, January 27, 2019 - link
A NAND logic cell consists of 2 transistors, while a Scan flip flop logic cell can consist of different count of transistors depending on where it is used. If I remeber correctly, Intel uses 8, 10 and 12 transistor designs.That gives 45.39 million NAND cells per mm² (basically SRAM) and ~12 million flip-flop cells.
The NAND cell is smaller because it consists of fewer transistors.
KOneJ - Sunday, January 27, 2019 - link
It would be great if you guys could get a CNL sample in the hands of Agner Fog. He might be able to answer some of the micro-architecture questions through his tests.dragosmp - Sunday, January 27, 2019 - link
Awesome review, great in depth content and well explained. Considering the amount of work this entailed, it's clear why these reviews don't happen every day. Thanksdragosmp - Sunday, January 27, 2019 - link
I'll just add...many folks are saying AMD should kick arse. They should, but Intel has been in this situation before - they had messed up the 90nm process; probably not quite as bad as the chips to be unusable, but it opened the door to AMD and its Athlon 64. What did AMD do? Messed it up in turn with slow development and poor design choices. Hopefully they'll capitalize this time so that we get an actual dupoloy, rather than the monopoly on performance we had since Intel's 65nm chips.eva02langley - Sunday, January 27, 2019 - link
Euh... You mean this...?https://www.youtube.com/watch?v=osSMJRyxG0k
Anti-competitive tactics? They bought the OEM support to prevent competition.
And, all lately, this came up...
https://www.tomshardware.com/news/msi-ceo-intervie...
"Relationship with Intel: Chiang told us that, given Intel's strong support during the shortage, it would be awkward to tell Intel if he chose to come out with an AMD-powered product. "It's very hard for us to tell them 'hey, we don't want to use 100 percent Intel,' because they give us very good support," he said. He did not, however, make any claims that Intel had pressured him or the company."
Yeah right, Intel is winning because they have better tech... /sarcasm