Conclusion: I Actually Used the Cannon Lake Laptop as a Daily System

When we ordered the Lenovo laptop, not only was I destined to test it to see how well Intel’s 10nm platform performs, but I also wanted to see what the device was like to actually use. Once I’d removed the terrible drives it came with and put in a 1TB Crucial MX200 SSD, I started to put it to good use.

The problem with this story is that because this is a really bad configuration of laptop, it gives the hardware very little chance to show its best side. We covered this in our overview of Carrizo several years ago, after OEM partners kept putting chips with reasonable performance into the worst penny pinching designs. The same thing goes with this laptop – it is an education focused 15.6-inch laptop whose screen is only 1366x768, and the TN panel’s best angle to view is as it is tilted away from you. It is bulky and heavy but only has a 34 Wh battery, whereas the ideal laptop is thin and light and lasts all day on a single charge. From the outset, using this device was destined to be a struggle.

I first used the device when I attended Intel’s Data Summit in mid-August. On the plane I didn’t have any space issues because I had reserved a bulkhead economy seat, however after only 4 hours or so of light word processing on a low screen brightness, I was already out of battery. Thankfully I could work on other things on my second laptop (always take two laptops to events, maybe not day-to-day at a show, but always fly with two). At the event, I planned to live blog the day of presentations. This means being connected online, uploading text, and being of a sufficient brightness to see the screen. After 90 minutes, I had 24% battery left. This device has terrible battery life, a terrible screen, is bulky, and weighs a lot.

I will say this though, it does have several positives. Perhaps this is because the RX540 is in the system, but the Windows UI was very responsive. Now of course this is a subjective measure, however I have used laptops with Core i7 and MX150 hardware that were slower to respond than this. It did get bogged down when I went into my full workflow with many programs, many tabs, and many messaging software tools, but I find that any system with only 8GB of memory will hit my workflow limits very quickly. On the natural responsiveness front, I can’t fault it.

Ultimately I haven’t continued to use the laptop much more – the screen angle required to get a good image, the battery life, and the weight are all critical issues that individually would cause me to ditch the unit. At this price, there are plenty of Celeron or Atom notebooks that would fit the bill and feel nicer to use. I couldn’t use this Ideapad unit with any confidence that I would make it through an event, either a live blog or a note taking session, without it dying. As a journalist, we can never guarantee there will be a power outlet (or an available power outlet) at the events we go to, so I always had to carry a second laptop in my bag regardless. The issue is that the second laptop I use often lasts all day at an event on its own.

Taking Stock of Intel’s 10nm Cannon Lake Design

When we lived in a world with Intel’s Tick Tock, Cannon Lake would be a natural tick – a known microarchitecture with minor tweaks but on a new process node. The microarchitecture is a tried and tested design, as we now have had four generations of it from Skylake to Coffee Lake Refresh, however the chip just isn’t suitable for prime time.

Looking at how Intel has presented its improvements on 10nm, with features like using Cobalt, Dummy Gates, Contact Over Active Gates, and new power design rules, if we assume that every advancement works perfectly then 10nm should have been a hit out of the gate. The problem is, semiconductor design is like having 300 different dials to play with, and tuning one of those dials causes three to ten others to get worse. This is the problem Intel has had with 10nm, and it is clear that some potential features work and others do not – but the company is not saying which ones for competitive and obvious reasons.

At Intel’s Architecture Day in December, the Chief Engineering Officer Dr. Murthy Renduchintala was asked if the 10nm design had changed. His response was contradictory and cryptic: ‘It is changing, but it hasn’t changed’. At that event the company was firmly in the driving seat of committing to 10nm by the end of 2019, in a quad core Ice Lake mobile processor, in a new 3D packaging design called Lakefield, in an Ice Lake server CPU for 2020, and in a 5G/AI focused processor called Snow Ridge. Whatever 10nm variant of the process they’re planning to use, we will have to wait and see.

I’ll go back to this slide that Intel presented back at the Technology and Manufacturing Day:

In this slide it shows on the right that 10nm (and its variants) have lower power through lower dynamic capacitance. However, on the left, Intel shows both 10nm (Cannon Lake) and 10nm+ (Ice Lake) as having lower transistor performance than 14nm++, the current generation of Coffee Lake processors.

This means we might not see a truly high-performance processor on 10nm until the third generation of the process is put into place. Right now, based on our numbers on Cannon Lake, it’s clear that the first generation of 10nm was not ready for prime time.

Cannon Lake: The Blip That Almost Didn’t Happen

We managed to snap up a Cannon Lake chip by calling in a few favors to buy it from a Chinese reseller who I’m pretty sure should not have been selling them to the public. They were educational laptops that may not have sold well, and the reseller just needed to get rid of them. Given Intel’s reluctance to talk about anything 10nm at CES 2018, and we find that the chips ‘shipped for revenue’ end up in a backwater design like this, then it would look like that Intel was trying to hide them. That was our thought for a good while, until Intel announced the Cannon Lake NUC. Even then, from launch announcement to being at general retail took four months, and by that time most people had lost interest.

At some point Intel had to make good on its promises to investors by shipping something 10nm to somewhere. Exactly how many chips were sold (and to whom) is not discussed by Intel, but I have heard some numbers flying around. Based on our performance numbers, it’s obvious why Intel didn’t want to promote it. On the other hand, at least being told about it beyond a simple sentence would have been nice.

After testing the chip, the only way I’d recommend one of these things is for the AVX512 performance. It blows everything else in that market out of the water, however AVX512 enabled programs are few and far between. Plus, given what Intel has said about the Sunny Cove core, that part will have it instead. If you really need AVX512 in a small form factor, Intel will sell you a NUC.

Cannon Lake, and the system we have with it inside, is ultimately now nothing more than a curio on the timeline of processor development. Which is where it belongs.

Stock CPU Performance: Legacy Tests
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  • vegajf51 - Friday, January 25, 2019 - link

    Icelake Desktop 3q 2020, intel will have another 14nm refresh before then. Reply
  • HStewart - Saturday, January 26, 2019 - link

    Intel is expected to release 10nm+ with Covey Lake by Christmas seasons. This canon lake chip is just a test chip. Reply
  • pugster - Friday, January 25, 2019 - link

    Thanks for the review. While the performance is not great, what about the power consumption compared with the 8130U? Reply
  • Yorgos - Friday, January 25, 2019 - link

    it's not great obviously when you are stuck at 2.2GHz, while the prev gen cpu with the same capabilities(except the avx) can go up to 3.4GHz.
    I bet the 8130 would've been faster even if configured at 10Watt TDP.
    Reply
  • Yorgos - Friday, January 25, 2019 - link

    ...and before jumping on me about that "stuck at 2.2GHz" let me report this:
    in certain loads the locked freq is slower than the unlocked one.
    What does this mean? it most probably means that the unlocked freq makes the cpu run hot, throttle and then try to balance between temperature and consumption.

    and a subnote on this. I think Intel should stop pushing the AVX instructions. It doesn't work as intended, it's not needed in most cases, especially when you have to design 256bit buses for 512bit data transfer on a low power cpu. Also it takes a lot of space on the die, it taxes the cache buses and it's useless when you disable your igpu(which is a good SIMD machine but not hUMA) and you have a dGPU up all the time just rendering your desktop.
    They should try focusing on HSA/hUMA on their cpus+igpus instead of integrating wide SIMD instructions inside their cores.
    Reply
  • 0ldman79 - Saturday, January 26, 2019 - link

    Thing is when AVX2 and AVX512 are used the performance increase can be rather massive.

    PCSX2, PS2 emulator, runs identically between my 3.9GHz Ivy Bridge Xeon (AVX) and my 2.8GHz i5 Skylake mobile (AVX2).

    AVX2 makes several games playable. You can choose your plugin and the AVX plugin cannot play Gran Turismo 4 @ 2.8GHz, the AVX2 plugin can.

    You may not find it useful, others do.
    Reply
  • HStewart - Saturday, January 26, 2019 - link

    It would be interesting to see the emulator re-factor to work with AVX 512 - it would like be twice the speed of AVX 2 Reply
  • levizx - Sunday, January 27, 2019 - link

    Nope, even with the simplest data set where AVX512 can perform twice the speed of AVX2 per cycle, the frequency has to drop significantly (~30% on Xeon Gold 5120 for example), so the upper limit is more like 40% gain. And that's PURE AVX512 code, you won't get that in real life. Assuming 50% AVX2 and 50% AVX512 code - that's a very generous assumption for non-datacentre usage, you'll have a 5% net gain. Reply
  • levizx - Sunday, January 27, 2019 - link

    5%~20% net gain, depending on how the scaling works. Reply
  • MrCommunistGen - Friday, January 25, 2019 - link

    Normally I try to read the whole article (and I *am* looking forward to reading the rest of it) but I already have 2 comments:

    1. Maybe this review has been in progress for quite a while, but you can definitely buy the NUC8i3CYSM NUC on Amazon, at least in the US. It is shipped and sold by Amazon not some random 3rd party too. It is expensive ($530), and can only be bought with up to 8GB of soldered down RAM, but you can buy it.

    2. While the Wi-Fi card is M.2, Lenovo (like HP and others) usually restricts what Wi-Fi cards can be used with a BIOS/UEFI whitelist. I guess this might not apply to a China-only model, but I wouldn't just assume that the card can be upgraded down the line unless you've already verified this is possible.
    Reply

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