The Xbox 360 Chipset

As we mentioned before, the Xbox 360's North Bridge is integrated into the GPU, similar to most PC chipsets with integrated graphics.  The North Bridge is on the main die of the GPU and shares the same 128-bit GDDR3 memory controller that the graphics core uses to access the Xbox 360's 512MB of memory.  This bus runs at 1.4GHz offering just over 22GB/s of bandwidth to main memory. 


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On the other side of the North Bridge there's the CPU's FSB interface, which offers  10.8GB/s of bandwidth in each direction (21.6GB/s total).  You can see the serial FSB laid out in the image below:


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The North Bridge also features a 500MB/s interface to the Xbox 360's South Bridge, which was designed by SiS (pictured below).


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Once again, you don't see any non-Microsoft logos on any of these chips.  It's clear this time around who the IP belongs to.  The South Bridge is responsible for communication with the audio codec, storage devices, USB ports, controllers, and any other I/O devices. 

The Xbox 360 GPU The Wireless Controllers
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  • PrinceGaz - Friday, November 18, 2005 - link

    Just google "cpu dies" - although you get some hits about dead processors, there are many more abot processor manufacturing, more than you get by googling "cpu dice" (the vast majority of those are to do with random number generation).

    The correct trm for more than one CPU die is "dies".
  • KristopherKubicki - Sunday, November 20, 2005 - link

    CPU "die" is called that because the CPU is cut from silicon in a specific term called "dicing". "Dice" is in fact the correct word.

    Just because I had nothing better to do this weekend besides beat Kameo in 10 hours, I put together an etymology of all words related to "Die". I'll put that on a website sometime in the near future.

    Kristopher
  • yacoub - Monday, November 21, 2005 - link

    That makes little sense. You dice food but you don't call the resulting piece(s) "die" or "dice". However, a processor is made from a die (remember die-cast metal cars when you were a kid?), and if you have more than one of that type of die, you have dies. Even the Google search comparison between "dies" and "dice" confirms that to be true.
  • akugami - Thursday, November 17, 2005 - link

    Anandtech with a comic from www.gucomics.com about their xbox 360 article.
  • yacoub - Thursday, November 17, 2005 - link

    As with the last article here that did this, you want "dies" not "dice".
    quote:

    simply pull the heatsinks off to reveal the GPUs (two dice on the chip)
  • yacoub - Thursday, November 17, 2005 - link

    quote:

    332 million transistor GPU is split into two separate dice,


    "Dice" are only in gambling. You want "dies".
  • yacoub - Thursday, November 17, 2005 - link

    pl. dies A device used for cutting out, forming, or stamping material, especially:
    An engraved metal piece used for impressing a design onto a softer metal, as in coining money.
    One of several component pieces that are fitted into a diestock to cut threads on screws or bolts.
    A part on a machine that punches shaped holes in, cuts, or forms sheet metal, cardboard, or other stock.
    A metal block containing small conical holes through which plastic, metal, or other ductile material is extruded or drawn.

    pl. dies Architecture. The dado of a pedestal, especially when cube-shaped.


    pl. dice
    A small cube marked on each side with from one to six dots, usually used in pairs in gambling and in various other games.
    dice (used with a sing. verb) A game of chance using dice.


    tr.v. died, die·ing, dies
    To cut, form, or stamp with or as if with a die.
  • yacoub - Thursday, November 17, 2005 - link

    quote:

    On a smaller manufacturing process, the dice could be unified,


    DIES. DIES DIES DIES. Yarrr...
  • yacoub - Thursday, November 17, 2005 - link

    The worst part is people reading the article who've never heard it used like that before (because it's wrong) are going to think you've got it right and will start saying it.
  • xbdestroya - Thursday, November 17, 2005 - link

    Seriously, is grammar commentary the extent of your thoughts on the article?

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