Intel ships Haswell, the low-powered chip that could save Windows tablets
After promising to bring power-efficient Haswell processors to tablets, Intel has now started shipping new low-power, fourth-generation Core i3 processors, including one that draws as little as 4.5 watts of power in specific usage scenarios.
Context & Ripple Effects
The shipping announcement is the payoff to Intel's July 2013 teaser of a limited-run Haswell aimed at thin, potentially fanless tablets, and the latest step in a two-year power campaign that ran from the Ivy Bridge consumption cuts announced in December 2012 through the Atom-based Clover Trail promise of ARM-like battery life for Windows 8 tablets.
What is new here is that the efficiency has reached the mainstream Core line — a full Core i3 drawing as little as 4.5 watts — rather than living only in Atom or special SKUs. The story travelled unusually widely, picked up by The Verge, PC World, ZDNet, GigaOM and four other outlets on the day, and it landed alongside CEO Brian Krzanich's IDF demos of a 14nm SoC laptop and his prediction that sub-$100 tablets are coming.
First-order effects
- Windows tablet makers can now spec full x86 Core performance into thin, passively cooled designs without accepting Atom-class performance or ARM-style app compatibility trade-offs.
- Atom (Clover Trail) loses its role as Intel's only credible tablet answer; OEMs deciding between Atom and Core for Windows 8 slates now have a near-parity option at the top end.
Second-order effects
- ARM licensees selling into Windows tablets — Qualcomm, Nvidia and Texas Instruments among them — face a shrinking differentiation window on battery life, which was the pitch behind Clover Trail's 'ARM-like' framing.
- If Krzanich's sub-$100 tablet forecast holds, Intel must push these power envelopes down the price curve too, compressing margins across its mobile line-up to defend share against ARM incumbents.
Third-order effects
- Intel's trajectory from Ivy Bridge cuts through Clover Trail to 4.5W Haswell points toward x86 and ARM converging on the same thermal envelope, making instruction-set compatibility rather than watts-per-performance the deciding factor for Windows device buyers.
- A sustained low-power Core roadmap would also let Intel chase the broader small-device market it has been testing with moves like the MinnowBoard single-board PC, eroding the assumption that x86 stops at laptops.
The trend: Mobile silicon is converging on a common low-watt envelope where Intel's x86 cores compete directly with ARM on battery life, shifting the Windows tablet contest from architecture to price and ecosystem.