ATi 2007年初发布全系列DirectX 10图形芯片
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发信站: 水木二站 (Wed Jun 21 23:32:44 2006), 站内
ATi在2007年初会将全系列从顶级到入门级到集成芯片组架构都过渡到DX10
nVIDIA这边呢？G7x还准备唱多长时间主角？
http://news.mydrivers.com/pages/20060621211752_38020.htm
Xbitlabs报道称，消息来源显示，ATi将在2007年初发布从高端到低端的全系列DirectX
10芯片组。
此前已经有报道指出ATi
R600已经设计完成，这意味着ATi将有几个月时间来完成主流和入门级图形处理器的设计，之后再将低端核心移到整合图形芯片RS700中，理论上来说，
ATi不仅可以在CeBIT 2007上演示支持DirectX
10的独立芯片，同时还可顺利推出整合芯片。
在2005年ATi支持SM3.0的R520因为产能问题迟迟无法上市，但这次业内人士称R600将领先其竞争对手发布，而且发布和上市之间间隔应该要比先前短。
一些和ATi关系密切的认识媒体报道说R600将有64个统一shader单元，16个纹理单元，时钟在650MHz以上，支持高速GDDR4显存。
而最新ATi产品规划显示，采用65nm的RS700整合芯片组将在07年中发布，RS700也将支持DX10。
目前看来，几家主流芯片组厂商ATI,Intel和SiS都计划在2006-2007年间推出DirectX
10 IGP，只是Nvidia的计划不详。
英文原文
http://www.xbitlabs.com/news/video/display/20060621042925.html
ATI Readies Top-to-Bottom DirectX 10 Graphics Cores Lineup for Early
2007 - Sources.
ATI Develops High-End, Mainstream, Entry-Level, Integrated DirectX 10
Chips
ATI Technologies, a leading supplier of graphics processors and
multimedia technologies, may be ready with the top-to-bottom lineup of
DirectX 10-supporting graphics processor and a chipset with built-in
DirectX 10 graphics core as early as by CeBIT 2007, according to
sources
close to the company.
It was earlier reported that ATI's first DirectX 10 graphics
chip
known under R600 code-named had been taped out, which means that
development
teams at ATI Technologies have several months to complete the designs
of
mainstream and entry-level graphics processors and then to built-in
low-end
graphics core into ATI's chipset code-named RS700. Theoretically,
sources
indicated, ATI may be able to demonstrate not only the family of
DirectX 10
discrete chips at CeBIT 2007, but also the integrated part, although,
the
latter should be actually available towards middle of the year.
Back in 2005 ATI released its top-to-bottom family of DirectX 9
shader model 3.0 chips in October. But that happened due to the fact
that
the company failed to launch the Radeon X1800 (R520) on time in May
2005,
six month after the initial tape-out due to failures with the design,
which
resulted in lower-than-expected yield at high speeds. As a result of
that,
the chip was delayed for so long that two mainstream products managed
to
reach production stage. This time, however, the high-end part - R600
- is
to be launched ahead of the other products, however, the time gap
between
the releases should be less than historical, sources indicated.
According to sources familiar with the plans of ATI
Technologies as
well as some media reports, ATI R600 will have 64 unified shader
processors
- an unprecedented number so far, 16 texture units - inline with
today's
GPUs, clock-speed beyond 650MHz and support for high-speed GDDR4 memory
controller. Obviously, components designated for lower-end market
segments
will have less unified shader processors.
The release of the RS700, which is to be made using 65nm
process
technology, in mid-2007 will put ATI behind Intel Corp.'s Direct X
10-supporting Graphics Media Accelerator 3000 built-in core in terms of
functionality, as the latter is to be released in late Q3 2006,
according
to some reports. ATI is already behind of Nvidia Corp. in terms of
integrated graphics feature-set, as even the company's forthcoming
RS600
core-logic only supports DirectX 9 shader model 2.0b, while Nvidia's
already shipping GeForce 6100-series products already features shader
model 3.0. On the other hand, none of the integrated graphics
processors
(IGPs) developers plan to create shader model 3.0 IGPs, except of the
Santa Clara, California-based supplier. ATI, Intel and SiS are known to
have DirectX 10 IGPs in the roadmap for 2006 - 2007 timeframe, while
plans of Nvidia Corp. are unclear.
Traditional GPUs have dedicated pixel shader and vertex shader
processors. In cases, where a frame being rendered contains a lot of
geometry and just a few pixel shaders to determine colour, the
performance
is limited by vertex shaders, while pixel processors are standing idle.
GPUs with unified shader processors will have special scheduler inside
them, which will determine the load from pixel, vertex and geometry
shaders and then assign appropriate number of processors for every kind
of work. This will allow to utilize all the computing power of the GPU,
believes ATI. Nevertheless, rival Nvidia Corp. believes that
implementation
of a unified shader architecture should be gradual and cautious.
Officials from ATI Technologies declined to comment on the
news-story.
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