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
SoCs and Graphics
Intel isn’t talking about implementations of Silvermont today other than to say that it will show up in smartphones (Merrifield), tablets (Baytrail), automotive (unannounced), communications infrastructure products (Rangeley) and microservers (Avoton). Baytrail, the tablet implementation of Silvermont, will be available by the end of this year running both Windows 8 (8.1/Blue?) and Android. Silvermont based Merrifield phones will show up early in 2014.
What we know about Baytrail is that it will be a quad-core implementation of Silvermont paired with Intel’s own Gen 7 graphics. Although we don’t know clock speeds, we do know that Baytrail’s GPU core will feature 4 EUs - 1/4 the number used in Ivy Bridge’s Gen7 implementation (Intel HD 4000). Ultimately we can’t know how fast the GPU will be until we know clock speeds, but I wouldn’t be too surprised to see something at or around where the iPad 4’s GPU is today. Given Intel’s recent announcements around Iris and Iris Pro, it’s clear that the mobile team hasn’t yet had the graphics wakeup call that the Core team just got - but I suspect the Atom group will get there sooner rather than later. Intel’s eDRAM approach to scaling Haswell graphics (and CPU) performance has huge implications in mobile. I wouldn’t expect eDRAM enabled mobile SoCs based on Silvermont, but I wouldn’t be too surprised to see something at 14nm.
Penryn-Class Performance
When Atom first came out, I put its CPU performance in perspective by comparing it to older Pentium M based notebooks. It turned out that a 1.6GHz Atom performed similarly to a 1.2GHz Pentium M. So how does Silvermont stack up in PC notebook terms?
On single threaded performance, you should expect a 2.4GHz Silvermont to perform like a 1.2GHz Penryn. To put it in perspective of actual systems, we’re talking about around the level of performance of an 11-inch Core 2 Duo MacBook Air from 2010. Keep in mind, I’m talking about single threaded performance here. In heavily threaded applications, a quad-core Silvermont should be able to bat even further up the Penryn line. Intel is able to do all of this with only a 2-wide machine (lower IPC, but much higher frequency thanks to 22nm).
There’s no doubt in my mind that a Baytrail Android tablet will deliver amazing performance, the real unknown is whether or not a Baytrail Windows 8 detachable/convertible will be fast enough to deliver a good enough legacy Windows experience. I suspect it’ll take Airmont before we really get there by my standards, but it’ll be close this round for sure.
What’ll really be interesting to see is how Silvermont fares in smartphones. Max clock speeds should be lower than what’s possible in a tablet, but not by all that much thanks to good power management. When viewed in that light, I don’t know that there’s a more exciting mobile architecture announced at this point. The ability to deliver 2010 11-inch MacBook Air performance in a phone is insane.
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Kevin G - Monday, May 6, 2013 - link
Actually I've gotten the impression from Anandtech that Intel has been so tardy on providing chips for the mobile market that they may have lost the fight before even showing up. Intel may have good designs and the best foundries but that doesn't matter if ARM competitors arrive first with 'good enough' designs to gobble up all the market share. There is a likely a bit of frustration here constantly hearing about good tech that never reaches its potential.There was the recent line in the news article here about Intel's CEO choice about how Intel is foundry that makes x86 processors. That choice was likely selected due to Intel's future of becoming an open foundry to 3rd party designs. Intel has done this to a limited degree already. They recently signed a deal with Microsemi to manufacture FPGA's on Intel's 22 nm process. Presumably future Microsemi ARM based SoC + FGPA chips will also be manufactured by Intel as well.
Kidster3001 - Tuesday, May 7, 2013 - link
Intel has publicly stated that it's foundry business will never make products for a competitor. That means no ARM SoC's in Intel fabs.Kevin G - Tuesday, May 7, 2013 - link
Intel isn't active in the FPGA area, well there than manufacturing them for a handful of 3rd parties. The inclusion of an ARM core inside a SOC + FGPA design wouldn't be seen as a direct competitor. Indirectly it definitely would be a competitor but then again just the FPGA alone would be an indirect competitor.name99 - Monday, May 6, 2013 - link
Actually the REAL history is- Intel article appears. All the ARM fans whine about how unfair and awful it is, and how it refers to a chip that will only be released in six months.
- ARM article appears. All the Intel fans whine about how unfair and awful it is, and how it refers to a chip that will only be released in six months.
- Apple (CPU) article appears. Non-Apple ARM and Intel fans both whine about how unfair it is (because of tight OS integration or something, and Apple is closed so it doesn't count).
Repeat every six months...
Bob Todd - Tuesday, May 7, 2013 - link
Winner winner chicken dinner. I love how butt hurt people get about any article comparing CPU or GPU performance of two or more competitors (speculatively or not). I have devices with Krait, Swift, Tegra 3, Bobcat, Llano, Ivy Bridge, etc. They all made sense at the time for one reason or another or I wouldn't have them. I'm excited about Slivermont, just like I'm excited about Jaguar, and whatever Apple/Samsung/Qualcom/Nvidia cook up next on the ARM side. It's an awesome time to be into mobile gadgets. Now I'll sit back and laugh at the e-peen waiving misguided fanboyism...axien86 - Monday, May 6, 2013 - link
Acer is shipping new V5 ultraportables based on AMD's Jaguar high performance per watt technology in 30 days. AMD is 10 to 20 times smaller than Intel, but with design wins from Sony, Microsoft and now many other OEMs, they are delivering real performance for real value.
By contrast Intel really has nothing to show, but endless public relations to compensate for a history of company that has been upstaged by smaller companies like AMD in forging real innovations in computing.
A5 - Monday, May 6, 2013 - link
If by "high performance per watt" you mean "less performance in a higher TDP" than sure. Intel trounces AMD in notebooks for a reason.As for the Sony/MS stuff, I doubt Intel even bid for those contracts.
kyuu - Monday, May 6, 2013 - link
I hope you're kidding. Bobcat-based designs have been superior to Atom for forever, and if you take graphics performance into account, then Atom has been nothing short of laughable. I wouldn't be surprised if Silvermont beats Jaguar in CPU performance, but it'll be a small delta, and Jaguar is coming out a full half-year ahead of Silvermont.It's also nice that Intel might get GPU performance around the level of the iPad 4's SoC by the end of the year, but I believe AMD's mobile graphics already handily surpass that and the ARM world will have moved on to solutions that handily surpass that by then as well. So, yet again, Intel will be well behind the GPU curve. It won't be laughably bad anymore, though, at least.
And I really love that last line. "Intel didn't get some design wins? Well, psh, they totally didn't even want those anyway."
kyuu - Monday, May 6, 2013 - link
Oh, and also not sure why you brought notebooks up when we're talking about architectures for very low-power devices like tablets, netbooks, and maybe some ultrathins. No one would claim that Trinity/Richland is at the same level of CPU performance as Ivy Bridge/Haswell. Personally, though, I'd still prefer an AMD solution for a notebook for the superior graphics, lower price, and more-than-adequate CPU performance.xTRICKYxx - Tuesday, May 7, 2013 - link
This is where I want AMD to come into play. Their low power CPU's are so much better than Atom ever was, and always had superior graphics.