Re: AMD64-based laptops from HP/Compaq are crippled

From: General Schvantzkoph (schvantzkoph_at_yahoo.com)
Date: 07/05/05

  • Next message: alex goldman: "Re: AMD64-based laptops from HP/Compaq are crippled" 
    Date: Tue, 05 Jul 2005 10:35:37 -0400

    On Mon, 04 Jul 2005 20:46:58 -0700, alex goldman wrote:

    > I've been researching my next laptop purchase, and whether it will run
    > Linux, and completely accidentally stumbled upon an alarming issue that
    > people need to be more aware about.
    >
    > Apparently (and if my understanding is correct), HP/Compaq disables
    > dual-channel memory access in Socket 939 motherboards, making CPU <-> RAM
    > communication slower, and overall performance less than what people would
    > expect when buying a system with the outward characteristics of what they
    > think they are getting.
    >
    > http://zv6000forums.com/viewtopic.php?t=148

    Turion's are in 754 packages not 939, they have one memory controller not
    two. If you want performance then make sure you get a processor with a 1M
    Cache, the cache size is much more important then either clock speed or
    dual memory channels. I have a Compaq R3000z laptop with an Athlon 64
    3400+ (1M cache, socket 754) and a desktop with an Athlon 64 3800+ (1/2M
    cache, socket 939). The 3400+ is twice as fast as the 3800+ on some tasks.

  • Next message: alex goldman: "Re: AMD64-based laptops from HP/Compaq are crippled"

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