ARM unveils power-optimized 2GHz Cortex-A15 quad-core chip

By Leeky ยท 12 replies
Apr 18, 2012
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  1. ARM Holdings, the UK-based company whose chip designs power the majority of the smartphone and tablet products on the market, has announced on their official blog a new quad-core chip...

    Read the whole story
  2. I want it in my server, laptop, and tablet now, where battery time and cost of continious use
    are important. My PC can be my power hungry performance option.
  3. EEatGDL

    EEatGDL TS Evangelist Posts: 568   +241

    I don't think you pretty understand about architectures, you can't simply put an ARM processor in a laptop because it has similar specs to an x86 processor. ARM differs in design, set of instructions, and other things that simply makes it totally uncompatible with Windows OS for example different to Windows 8 RT. Is like if you wanted a PC with microcontollers just because you can use them with normal batteries due their extremely low energy consumption, even if they are for example 16-bit microcontrollers.

    But maybe you can try laptops with ultra-low voltage processors (~8 W) anyway.
  4. EEatGDL, voltages are typically given in volts, not watts.
  5. Zeromus

    Zeromus TS Booster Posts: 227   +7

    That was the most horrible explanation about the quirks of CPU architectures.
  6. Zeromus

    Zeromus TS Booster Posts: 227   +7

    This is the most horrible explanation I mean, not the article. Doesn't the upcoming exynos implement A15?
  7. VitalyT

    VitalyT Russ-Puss Posts: 3,664   +1,949

    Power-optimized, and not a word on the consumption - what kind of article is that?
  8. SNGX1275

    SNGX1275 TS Forces Special Posts: 10,742   +421

    But ARM performance is getting to be pretty good. Can't be a whole lot different than the Via C6 processors that a few of us ran XP on. Win 8 is pretty lightweight and has an ARM version, but unfortunately for us normal people Microsoft doesn't appear to be releasing a standalone ARM version.
  9. EEatGDL

    EEatGDL TS Evangelist Posts: 568   +241

    Hehe, I mentioned the watts for the consumption point mentioned by the first guest; not an example of the voltage they work with, I think it was a bad place to write it though [just next to voltage], I agree.

    And for the others I wasn't really explaining anything, I didn't talk about Carpinelli, Harvard architecture, CISC, etc. neither about assembly lenguage differences between architectures, etc. etc. etc. RISC (ARM) is a totally different design philosophy from CISC (x86), that's why in the transition from the Power PC to Intel, Apple was presenting a binary translator from one architecture to another [you can find it in a keynote uploaded in Youtube were they -Jobs- show the binary translator using Wolfram Mathematica]. I know the C51 assembly language and I'm sure it has a lot of different instructions, maybe some similar with the x86 architecture, but a lot less and different without knowing a single x86 instruction for certain, I can ask my uncle that works on intel about some differences between maybe C51-MMX or C51-SSE2 to illustrate you more.

    I'm half way my career, but I can stand pretty much for what I said. I never said ARM performance is bad, I simply said instructions targeting x86 won't work on an ARM processor. All of that derived from the first commentary about power consumption-architecture-performance; nothing more, nothing less.
  10. EEatGDL

    EEatGDL TS Evangelist Posts: 568   +241

    And even from Power PC to Intel, both were CISC, now imagine between RISC to CISC, or the other way.
  11. SNGX1275

    SNGX1275 TS Forces Special Posts: 10,742   +421

    PowerPC was RISC. Now the 68k processors, which Apple used before PowerPC were CISC. So they went CISC -> RISC -> CISC all while keeping the OS/Program compatibility. System 7 might have worked on PowerPC, I forget, but I know OS 8 did, and if you had OS 8 and an app for 68k it ran. Then with OS X 10.4 and 10.5 it ran on Intel and PowerPC chips, again with program compatibility between them (with specific exceptions like new devs writing only for Intel).
  12. EEatGDL

    EEatGDL TS Evangelist Posts: 568   +241

    Thanks SNGX for the acclaration, I thought PowerPC was just a comercial name for the Motorola 68K, because I knew Motorola was behind PowerPC, but not that the PowerPC was actually a totally different approach. I just happily ended the semester and finally have spare time.
  13. Use a Linux desktop like Ubuntu or Fedora. These full desktop OSes will run perfectly on this chip.
    I run Ubuntu on a Tegra 2 laptop, which is only limited by its memory (512MB). With 4GB of memory, this chip is very suitable for laptops.

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