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

From: Jim (james_at_the-computer-shop.co.uk)
Date: 08/15/05

  • Next message: Jim: "Re: AMD64-based laptops from HP/Compaq are crippled" 
    Date: Mon, 15 Aug 2005 15:02:30 GMT

    Doug Lynn wrote:
    > Hi, aren't Turions all socket 754...???
    >
    > Thats what I read...
    >
    > "Robert Klute" <news@klute.us> wrote in message
    > news:igckc1d7gif94bumgdv80dchjj5fuqn6hu@4ax.com...
    >
    >>On Tue, 05 Jul 2005 06:55:04 GMT, Robert Klute <news@klute.us> wrote:
    >>
    >>
    >>>On Mon, 04 Jul 2005 23:19:07 -0700, alex goldman <hello@spamm.er> wrote:
    >>>
    >>>
    >>>>Robert Klute wrote:
    >>>>
    >>>>
    >>>>>On Mon, 04 Jul 2005 20:46:58 -0700, alex goldman <hello@spamm.er>
    >>>>>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
    >>>>>
    >>>>>The laptops use the Turion chip.
    >>>>
    >>>>Wrong. _Some_ of the laptops use the Turion chip (quite few as of this
    >>>>writing, actually).
    >>>
    >>>The zv6000, the laptop under discussion here and in the forum you
    >>>referenced, uses the Turion chip.
    >>>
    >>>
    >>>>Regardless ...
    >>>>
    >>>>
    >>>>>According to AMD, the Turion's
    >>>>>integrated memory controller can use PC1600, PC2100, PC2700 or PC3200
    >>>>>unbuffered DDR SO-DIMMs and has a maximum throughput of 3.2 GB/s.
    >>>>
    >>>>Do you understand how dual-channel access works? You have 3.2 GB/s per
    >>>>memory module, i.e. up to 6.4 GB/s. Dual-channel access is more, not
    >>>>less,
    >>>>important when slow memory is used.
    >>>
    >>>NO, the Turion's memory controller is 64-bit and limited to a max of
    >>>3.2GB/s. Dual channel won't help. Read the specs. Here is the
    >>>executive's graphic for you:
    >>>http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_12651_12663,00.html
    >>
    >>And just to be absolutely clear, only the chips with 128-bit memory
    >>controllers can use dual channel memory and ALL the mobile AMD-64 chips
    >>are listed as being socket 754 and having 64bit memory controllers.
    >>
    >>
    >>http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_10220_10221^11030,00.html
    >>
    >>
    >>As for the forum thread you referenced, the posters are just a bunch of
    >>whiny idiots. Since only an idiot would think that a laptop would use
    >>an 89W 939 chip in it. Talk about a hot system, it would have to come
    >>with a nomex pad to keep you from getting 2nd degree burns.
    >
    >
    >

    Go-l dot com has/had a /dual/ AMD64 939 laptop in their extreme
    performance range. 4GB RAM, 120GB HDx2, a huge battery pack, and a solid
    aluminium chassis hinged onto a 20" WXGA panel. Dreamy stuff, if you
    want a laptop you could fry half a cow on. I'll take two. 

    -- 
Cheers,					http://www.dotware.co.uk
Jim			  http://www.dotware-entertainment.co.uk
Maybe the Internet has the answers I need. It certainly answered my 
questions about wang enhancement.
  • Next message: Jim: "Re: AMD64-based laptops from HP/Compaq are crippled"