Demos tecnologicas de la gpu de Ati para xbox 360

the_master escribió:Esta demo corre en una ATI X1800. Esta es la que lleva la xbox, peor o mejor?

the_master escribió:Esta demo corre en una ATI X1800. Esta es la que lleva la xbox, peor o mejor?

Bollox escribió:Es claramente inferior a la gpu de la 360, porque sencillamente ni tiene la novedosa arquictectura de esta ni tan si quiera llega a tener los 24 pipes que se le suponen a la de la 360 (por no hablar de la memoria embebida) asi que imaginate lo que puede hacer la nueva grafica que ati monta en la 360.

Hagiwara escribió:Que yo sepa tiene 48 pipes

A mi lo que me gustaria anotar es que aparte necesita de un bus cuando es sabido que estando en placa base como la X360 es mucho mejor

PASODETOD escribió:Yo ahora mismo los estoy bajando y van bien rapidos , suerte de tener cable de euskaltel 3000/600

Luego digo a ver que tal estan

ChrisRedfield escribió:

Ahhhh, entonces, si esta en placa base, que pasa, ¿que no necesita bus o que?

Bollox escribió:Es claramente inferior a la gpu de la 360, porque sencillamente ni tiene la novedosa arquictectura de esta ni tan si quiera llega a tener los 24 pipes que se le suponen a la de la 360 (por no hablar de la memoria embebida) asi que imaginate lo que puede hacer la nueva grafica que ati monta en la 360.

wikipedia escribió:Graphics processing unit

Custom ATI R500-based "Xenos"

* 337 million transistors total
* 500 MHz parent GPU (90 nm process, 232 million transistors)
* 500 MHz 10 MB daughter embedded DRAM Framebuffer (90 nm process, 105 million transistors)
o NEC designed eDRAM has internal logic for Color, Alpha blending, Z/Stencil buffering, and Anti-aliasing
* 48-way parallel floating-point dynamically-scheduled shader pipelines (ALU's for Vertex or Pixel Shader processing)
* Unified shader architecture (This means that the pipelines are shared between pixel pipelines and vertex shaders; for example, 42 pixel pipelines : 6 vertex shaders).
* 16 Filtered & 16 unfiltered texture samples per clock
* Polygon performance: 500 million triangles per second
* Pixel fillrate: 16 gigasamples per second fillrate using 4X MSAA
* Shader performance: 48 billion (48,000 million) shader operations per second (96 billion shader operations per second theoretical maximum)
* Dot product operations: 9.6 billion per second theoretical maximum (Microsoft figure), 33.6 billion per second when combined with CPU power (theoretical maximum)

beyond3d escribió:ATI C1 / Xenos

A name that has long since been mentioned in relation to the graphics behind Xenon (the development name for XBOX 360) is R500. Although this name has appeared from various sources, the actual development name ATI uses for Xenon's graphics is "C1", whilst the more "PR friendly" codename that has surfaced is "Xenos". ATI are probably fairly keen not to use the R500 name as this draws parallels with their upcoming series of PC graphics processors starting with R520, however R520 and Xenos are very distinct parts. R520's aim is obviously designed to meet the needs of the PC space and have Shader Model 3.0 capabilities as this is currently the highest DirectX API specification available on the PC, and as such these new parts still have their lineage derived from the R300 core, with discrete Vertex and Pixel Shaders; Xenos, on the other hand, is a custom design specifically built to address the needs and unique characteristics of the game console. ATI had a clean slate with which to design on and no specified API to target. These factors have led to the Unified Shader design, something which ATI have prototyped and tested prior to its eventual implementation (with the rumoured R400 development?), with capabilities that don't fall within any corresponding API specification. Whilst ostensibly Xenos has been hailed as a Shader Model 3.0 part, its capabilities don't fall directly inline with it and exceed it in some areas giving this more than a whiff of WGF2.0 (Windows Graphics Foundation 2.0 - the new name for DirectX Next / DirectX 10) about it.

The Xenos graphics processor is not a single element, but actually consists of two distinct elements: the graphics core (shader core) and the eDRAM module. The shader core is a 90nm chip manufactured by TSMC and is currently slated to run at 500MHz*, whilst the eDRAM module is another 90nm chip, manufactured by NEC and runs at 500MHz* as well. These two chips both exist side by side, together on a single package, ensuring a fast interlink between the two. The main graphics chip, the parent core, could be considered as a "shader core" as this is one of its primary tasks. The eDRAM module is a separate, daughter chip which contains the elements for reading and writing color, z and stencil and performing all of the alpha blending and z and stencil ops, including the FSAA logic. We'll explore the capabilities and operations of both these chips in greater detail throughout the article.