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Intel claims that its next generation of mobile CPU products will be able to beat ARM in power efficiency. The company claims to be unconcerned that Microsoft will be allowing ARM chips on Windows netbooks, notebooks, and tablets.  (Source: Intel)
Who, us worried? Naww...

Microsoft’s announcement that the next version of Windows would support ARM chipmakers' CPUs was a bombshell and shocking news to x86 chipmaker Intel.  Many took the news as a sign that Microsoft felt Intel, the world leader in PC CPU shipments, was offering too little, too late in power improvements compared to the power-savvy ARM architecture.

In newly released comments, an Intel spokesperson denies that Microsoft took such a stand and insists that not only is Intel at no risk, but that it will actually be able to beat ARM at power efficiency.

Intel's spokesperson delivered these comments to the SF Gate. States the spokesperson, "With over 30 years of compatibility, we will easily scale down to a lower power Windows to match our Atom processor family, or any x86-based Intel chip."

The company's executive leadership made similar claims during its recent earnings call.

The spokesperson also pointed to a recent interview Intel executive vice president Dadi Perlmutter did with Ars Technica. The Intel executive claimed that it would take Microsoft so long to get the next version of Windows ready that by then his company would have released designs that could compete with ARM in power.

The spokesperson adds, "Windows will always run best on Intel.  Porting Windows to a new architecture, where chips are generally incompatible with each other and require sizable investment in millions of other software code, applications and middleware will be complex and costly."

Costly, perhaps, but many think it is necessary despite Intel's claims.  Intel has yet to release an x86-based tablet system-on-a-chip (CPU+GPU) that's anywhere close to the power efficiency of the ARM-based chips present in virtually every tablet on sale today.  And while Intel Atom-based tablets will be coming this year, it's not expected to get its smartphone CPUs to market this year.

While Intel's prospects in the tablet market look slim, the biggest danger to it is actually in the budget laptop/netbook sector.  ARM-based designs could offer much longer battery life than designs using Intel chips, such as Sandy Bridge or Atom.  The ARM architecture is inherently slightly more efficient as it eliminates register expensive renaming and has a slimmer instruction set.  While not all reduced instruction set computer CPUs -- RISC CPUs -- have been as successful (e.g. the PowerPC architecture), ARM represents the closest to perfect RISC architecture the market has seen to date.

Despite those architectural advantages, Intel could be right about future efficiency if it continues to aggressively pursue die shrinks.  As processor shrink, they become more energy efficient, but leakage current accounts for more and more of the power budget.  So if Intel can out-shrink ARM chipmakers or use better leakage controlling technologies in its chips, that could make more of a difference to net power consumption than the core architecture, in the long run.

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By Flunk on 1/21/2011 9:44:22 AM , Rating: 2
This article is misses the mark in several places. ARM doesn't "eliminates register expensive renaming", it mitigates it by having more registers. Also, PowerPC has not been a radical failure. Many CE devices including all current-gen home consoles use PowerPC processors (Wii,360,PS3).

RE: What?
By ShaolinSoccer on 1/21/2011 11:37:42 AM , Rating: 2
What does the PSP use? Speaking of which, I would LOVE to have a cell phone that is exactly like the new PSP except have a touch screen so you can type on a keyboard on that screen. It would also need Android 2.2 or higher :D

C'mon Sony! Get with the program!

RE: What?
By silverblue on 1/21/2011 12:02:39 PM , Rating: 2
"This article is misses the mark in several places. ARM doesn't "eliminates register expensive renaming", it mitigates it by having more registers."

Isn't that the same thing? You don't have general purpose registers that require renaming because you've already got registers set aside for that purpose. More hardware, but simpler code?

RE: What?
By encia on 1/23/2011 11:24:08 PM , Rating: 2
ARM Cortex A9 includes "register renaming scheme" i.e.

RE: What?
By omnicronx on 1/21/2011 1:42:41 PM , Rating: 3
This article is misses the mark in several places. ARM doesn't "eliminates register expensive renaming", it mitigates it by having more registers.
Please.. potato, potAto..

I've seen it written like that in textbooks, so sorry but he is correct. ARM has a reduced instruction set but essentially eliminates expensive register renaming by including extra integer registers.

PPC also is essentially dead in the consumer PC space. Considering where they were at one time, its a complete failure in comparison. Furthermore the Cell is hardly a derivative of the previous PPC chips. The PPC architectural lives on, but PPC chips as we knew them are surely dead..

RE: What?
By encia on 1/23/2011 11:19:55 PM , Rating: 2
ARM Cortex A9 includes "register renaming scheme"


Both ARM and X64 has 16 GPRs.

RE: What?
By encia on 1/23/2011 11:17:12 PM , Rating: 2
ARM Cortex A9 includes "register renaming scheme"


Both ARM and X64 has 16 GPRs.

"I modded down, down, down, and the flames went higher." -- Sven Olsen

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