Inside Microsoft's Xbox 360
by Anand Lal Shimpi, Kristopher Kubicki & Tuan Nguyen on November 16, 2005 5:09 AM EST- Posted in
- Systems
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.
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:
The North Bridge also features a 500MB/s interface to the Xbox 360's South Bridge, which was designed by SiS (pictured below).
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.
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fuzzynavel - Wednesday, November 16, 2005 - link
Thanks for the article....shame slash-dot has killed your bandwidth!!Seems like a good point about overheating...maybe worth waiting till 65nm chips start showing up...won't get one in the UK till way after christmas anyway!!(haven't pre-ordered)
Face27 - Wednesday, November 16, 2005 - link
Is it my connection or is anandtech being really slow, its not loading any of the pictures which is what I wanna look at. I'm guessing this is quite a popular article.zech - Wednesday, November 16, 2005 - link
The article was slashdotted:http://games.slashdot.org/games/05/11/16/1432205.s...">http://games.slashdot.org/games/05/11/1...5.shtml?...
Anandtech's servers aren't handling this /. very well. But this is one of the first Xbox360 interal reviews (in a PC-hardware sort of fashion), so I'm sure every Xbox360 forum out there is posting links to it.
ItsOnlyMonday - Wednesday, November 16, 2005 - link
Yes, these pictures are on multiple forums, somee even lack proper credits.. :-\gamigin - Wednesday, November 16, 2005 - link
[quote]game developers shouldn't run into capacity limitations on Xbox 360 discs anytime soon
[/quote]
Prominent game developers disagree
From "http://www.eurogamer.net/article.php?article_id=56...">http://www.eurogamer.net/article.php?article_id=56.... Note that this interview was before the next gen console debate in 2004.
[quote]
The danger is currently the storage medium (DVD), and one we thing we’re all praying for in the next round of hardware is that they don’t just go, ‘It’s DVD again’. We’ve done some clever stuff with compressing it, but we were virtually full on the disc with Vice City – this time we’re overfilling the disc to the max.”
[/quote]
quanta - Wednesday, November 16, 2005 - link
If the developers worry about that much on not enough space to store sound samples, they should have invested on text to speech technology a long time ago, instead of relying on prerecorded sample. Unlike the cheesy Macintalk TTS in the 1980s, modern TTS can accurately simulate human speeches, even the emotional tones. Hey, Ananova uses it, does it not? That way the developers don't even have to worry about rehiring dead/retired/on-strike workers doing voices for games based on century-old movies!gamigin - Wednesday, November 16, 2005 - link
Voice synthesis is great but it's really not at the point of replacing voice actors for dramatic games. Can you imagine watching a movie with the voices of your favorite actor dubbed in by a computer? Not quite the same.Also, it's more than just voice overs; a lot of space is used for graphics, models, textures, landscapes, animation data, sound effects, and music.
Most current games don't need more capacity than standard DVD at the moment but some definitely do and others could at least take advantage of it.
quanta - Wednesday, November 16, 2005 - link
Actually, the emotionalal aspect of TTS is already been done by http://www.computing.dundee.ac.uk/staff/irmurray/s...">various people. In fact, many commercial grade TTS software that supports http://www.w3.org/TR/speech-synthesis/">SSML already able generate emotionally sounding voices. It's not Microsoft's fault that game developers don't try to use/refine the existing TTS engines to make them usable for voice acting applications.Xenoterranos - Thursday, November 17, 2005 - link
Ywah, sure, but can you get a computer to do a dead-on Ray Liotta? I think not my friends, I think not!quanta - Tuesday, December 6, 2005 - link
Why don't you try it first before commenting? You can find some demos on http://www.nuance.com/realspeak/rvoice/english.asp">Nuance rVoice's site. Depending on the title, the TTS voices sound better than the real live voices in some games.