Intel’s Silvermont Architecture Revealed: Getting Serious About Mobile
by Anand Lal Shimpi on May 6, 2013 1:00 PM EST- Posted in
- CPUs
- Intel
- Silvermont
- SoCs
Final Words
Silvermont really is Intel’s Conroe for the mobile market, but not in the sense that many have been expecting. Given that success in mobile is so closely tied to device wins, Silvermont alone isn’t enough. Unlike Conroe, a very competitive Silvermont won’t change the world overnight. What Silvermont does however is offer a great foundation for Intel going forward. Conroe lead to Penryn, Nehalem, Westmere, Sandy Bridge, Ivy Bridge and soon, Haswell. It was the platform that Intel could build on regularly by executing on tick-tock. Conroe paved the way for the insane advantage Intel has held onto for the past few years. Silvermont is like Conroe in that it provides that same foundation.
The mobile market is far more competitive than the PC industry was back when Conroe hit. There isn’t just one AMD but many competitors in the SoC space that are already very lean and fast moving. There’s also the fact that Intel doesn’t have tremendous marketshare in ultra mobile. Silvermont may feel a lot like Conroe, but the market it’s competing in is very different. That’s not to say that Intel can’t be successful here; it’s just not going to be easy.
Architecturally Silvermont is very conservative, and that’s not a bad thing. A side effect of not wanting to make Haswell irrelevant by a far lower cost part is the benefit of maintaining power efficiency. Intel joins the ranks of Apple and Qualcomm in intelligently scaling performance while respecting power consumption. Intel’s 22nm process should give Silvermont a lot of runway to use. If it can quickly follow up with 14nm, Silvermont’s power advantage could end up being akin to Conroe’s performance advantage in the mid-2000s.
Even so, Silvermont is long overdue. It’s the first mobile architecture where Intel really prioritized smartphones and tablets, and on paper, it looks very good. Now it’s up to Intel to turn a great architecture into great design wins. From what I’m hearing, we may actually see that happen.
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Spunjji - Wednesday, May 8, 2013 - link
+1chubbypanda - Monday, May 6, 2013 - link
The article is about yet to be relased platform. Obviously you could get better information if you work for Intel or its OEM partners. If you don't, Anand's writing is as good as they get.Thrill92 - Tuesday, May 7, 2013 - link
But what's your point?raptorious - Monday, May 6, 2013 - link
It seems like every subsequent Anandtech article about Intel that I read sounds more and more like an Intel Marketing slide deck. I think I'd believe that the absolute performance of Silvermont is better than Cortex A15, but I'm very skeptical that the perf/watt will actually be better at the TDP that we care about for a tablet. I have a very hard time believing that a 2-wide OoO architecture will get better IPC than a 3-wide one. In order to achieve better performance, you'd have to very aggressively scale frequency, and as we all know, perf/watt usually decreases as you scale frequency up (C*V^2*F). It MIGHT be better perf/watt in a phone, simply because with a 2-wide architecture, you can scale dynamic power much lower, but of course, then you can't make the ridiculous claims of 1.6x performance.JarredWalton - Monday, May 6, 2013 - link
FWIW, Intel is willing to provide these detailed slide decks long in advance of the launch of their hardware. The other SoC vendors are far less willing to share information. If Apple, Qualcomm, or some other vendor put together a nice slide deck, I can guarantee we'd be writing about it.B - Monday, May 6, 2013 - link
@JarredWalton, I completely agree with your assessment. I have listened to every Anandtech Podcast and repeatedly hear Anand and Brian Klug lament the lack of transparency with the other SOC vendors. Those two go through great lengths to get any meaningful information on the roadmaps of Apple, Qualcomm, et al. The bottom line is that currently Intel is accustomed to sharing more information than its peers in the mobile industry and I suspect your readership wants to know what's coming long before the product is released, and this will always include a speculative component.beginner99 - Monday, May 6, 2013 - link
The intel slides basically say intel will have 8x better performance/watt. Now if you don't believe them, just half the numbers and you are at 4x, which is still huge...I believe it.Medfield uses a basically 5 year old design on an older process!!! than current ARM offerings and is competitive in performance/watt (it's actually better already). The only thing is how efficient the GPU will be and even more important how expensive the whole SOC will be. So even if the performance and power data is correct, not guarantee it will succeed.
I do see why some don't like the article but I think Anand is just enthusiastic and lets be honest, AMD has no delivered anything to be enthusiastic about in years and has a history of misinformation on slides What intel disclosed on slides was usually more or less true in the past so they have more credit than AMD.
raptorious - Monday, May 6, 2013 - link
Showing 8x perf/watt or even 4x perf/watt from generation to generation might be possible by milking numbers, but across the board that is laughably impossible. You're talking about defying the laws of physics. This architecture isn't radically different from A15 or other designs, and the process improvements of 22 nm over 32 nm don't just magically give you 4x perf/watt. If you want to live in Intel's fairy tale land, go ahead.JDG1980 - Monday, May 6, 2013 - link
Intel has far better fabs than anyone else. That alone gives them a huge advantage. The reason they've been doing so poorly up until now is that (as the article mentions) they've basically been stagnating with an Atom design dating back to 2004. Now that they've updated to a modern design, they should be able to beat their competitors decisively on the hardware side. Whether that will lead to design wins or not, who can say... they're pretty late to this particular game. But they can give it a good shot.t.s. - Tuesday, May 7, 2013 - link
Yeah, right. Same with AMD. After they 'upgrade' their architecture from star to bulldozer, they automagically have a huge advantage. Remember, changing architecture doesn't necessary a good thing. Moreover for the 1st time you do the change.