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Intel's Penryn Benchmarked

Posted by CmdrTaco on from the slightly-faster-than-my-286 dept.

Steve Kerrison writes "Intel's keen to show off its up-coming 45nm Penryn Core 2 CPU. HEXUS had some hands on time with the new processor to get an idea of how well it will perform once its released: 'Intel's new 45nm Penryn core adds more than just a clock and FSB hike, so much so that even a dual-core Penryn is able to beat out a quad-core QX6800 under certain circumstances.'"

5 of 124 comments (clear)

  1. Quick summary by Anonymous Coward · · Score: 5, Informative

    If your app benefits from SSE4 optimizations, the gains compared to the current Core 2 can be giganormous (DivX encoder: +85% at equal clock). Otherwise, expect a per clock advantage of about 10%.

  2. Re:which brings up a point... by TheSunborn · · Score: 2, Informative

    And you would ofcause first need to add auto SSE4 support to your compiler.

  3. Re:I really wanted to read that.... by TheThiefMaster · · Score: 4, Informative

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  4. Re:Poor AMD by tomstdenis · · Score: 2, Informative

    Um, ia32 could never address more than 4GB per process (and often it was 2GB). Even though with PAE you could put segments anywhere in a 36-bit address space. Most modern C compilers have no idea about "far pointers" [think back to the 16-bit days] so you're still stuck to at most 32-bits of address.

    As for pointers being twice the size, yeah that's a pain. You can code around that if you know you'll be indexing something smaller than 4GB in size (hint: x86_64 can still efficiently use 32-bit registers). But if you're poking around a 10GB mmap object you just need 64-bit pointers so there is no getting around that anyways.

    Since x86_64 can run 32-bit apps in long mode, you can just re-compile your app for 32-bit mode if it's absolutely not going to take advantage of the memory space or register size.

    Tom

    --
    Someday, I'll have a real sig.
  5. Re:Is this a laptop chip by Dwindlehop · · Score: 2, Informative

    Wikipedia is wrong.

    Disclaimer: I am an employee of Intel, but I do not speak for Intel. This post reflects my opinions and not those of Intel Corporation.

    --
    Jonathan Pearce jonathan@pearce.name
    3EAAFB2A http://www.jonathan.pearce.name/