Proximo VPU da ATI R520 na primavera

Zar0n

Power Member
Proximo VPU da ATI R520 na primavera

ATI’s Next-Generation VPU on Track for Spring, Claims Research Firm

Credit Suisse First Boston Does Not Think R520 and 90nm are a Big Risk

Research firm Credit Suisse First Boston claimed in a recently released report that ATI Technologies, the world’s major supplier of visual processing units, is on track with introduction of its next-generation graphics processor in Spring, 2005, and said that the risks with major transition of process technology to 90nm are not tremendous.


R520 Taped Out, Yields are Key Risk

“ATI has completed test wafers on 90nm at TSMC and has hit its milestones to date for its next generation R520 product due out in Spring 2005,” CSFB wrote.

In early November a high-ranking source close to ATI Technologies confirmed that the chip known as the R520 had been taped out, which means that the completed design of the processor had been sent to an ATI’s foundry partner.

“Key risk ahead is achieving strong yields on 90nm, a point too early to call but potentially less risky since low-k and copper issues were resolved at 130nm. ATI noted that the next two years will see major architectural jumps (likely Pixel Shader 3.0 in 05 and DX10 for Longhorn in 06), raising the bar but requiring execution as well,” CFSB’s analysts Randy Abrams and Michael Masdea believe.

ATI’s current generation high-end visual processing units, such as RADEON X850 XT Platinum Edition, are made using 130nm low-k process technology. While it remains to be seen, whether this chip that contains more than 160 million of transistors is able to achieve strong yields with 540MHz – 550MHz clock-range, it may be assumed that 90nm design even with larger amount of transistors will offer clock-speeds in-line or higher than current high-end chips.

Bridging Today and Tomorrow

Not much is known about the architecture and capabilities of the code-named R520 product that was initially referred as the R500. What is clear now is that the new graphics chip will sport Shader Model 3.0 – pixel shaders 3.0 and vertex shaders 3.0 – bringing additional programming capabilities to ATI’s future graphics processors as well as some other innovations.

ATI’s R5xx architecture will not resemble that of the previous generation products and NVIDIA’s GeForce 6 architecture known as NV4x, particularly ATI will implement efficient flow-control, a crucial feature for pixel shaders 3.0, that will not bring speed penalty it does on existing SM3.0 hardware, according to sources. The future of the graphics hardware lies in higher number of ALUs ops per texture ops, unified pixel and vertex shaders as well as some other requirements of Microsoft Windows Longhorn operating system, such as virtualisation and context switches. While ATI agrees on the long-term goals for its roadmap, it does not name feature-set of actual products and says all the architectural changes will be implemented gradually, not at once.

Some sources claim that the R500 is a code-name of ATI’s graphics processor that will be submitted for Microsoft’s next Xbox console. The shader core of the R500 was reported to have 48 Arithmetic Logic Units (ALUs) that can execute 64 simultaneous threads on groups of 64 vertices or pixels. ALUs are automatically and dynamically assigned to either pixel or vertex processing depending on load. The ALUs can each perform one vector and one scalar operation per clock cycle, for a total of 96 shader operations per clock cycle. Texture loads can be done in parallel to ALU operations. At peak performance, the GPU can issue 48 billion shader operations per second, it was said.

The R520 is also expected to feature advanced memory interface, presumably supporting GDDR4 memory.

Competition Unclear

While NVIDIA remains extremely tight-lipped over its future products, it is known that the company is readying its code-named NV47 visual processing unit, a massively revamped GeForce 6 architecture with 24 pixel pipelines. The NV47 is expected to be released sometime in Spring, 2005, but it is unknown whether NVIDIA is ahead, or behind ATI’s R520 product.

The status of NVIDIA’s future architecture code-named NV50 is also uncertain: some reported recently that the chip had been cancelled, but officials decline to confirm or deny the information.

Muito power..... :x2:
 
XII

Este vai deixar as X8** parecerem 9600 SE :x2:

GDDR4...
0,09 nm
48 bilhoes de shader/s
48 aritimetc units
64 (!) pixel/saher pipes (?)

dass isso deve dar 40000 3dmark 2003 e 25000 05 :x2:
:wow:

Mas tipo só vai render se tivermos A64 com DDR2 @ 800, 2 megas L2, 3500 mhz em defaut, SS3 e um HTT de pelo menos 1600 mhz :009:
e/ou dothans @ 3500 mhz...
e/ou P-4 EE com 6 megas L3 e 1200 mhz fsb...

l0l
 
Última edição:
A ver vamos :) Ainda agora xegaram as X800 que ja foi um bom salto das 9800, outro salto tao grande ja daki a uns meses? não me xeira.
 
espera aí, isso quer mesmo dizer q vai ter 64 pipelines? não pode... :eek:
Bolas, isso era um monstro descomunal... Se isso se confirmar, já sei qual a placa q vai substituir a minha 9700 :009:
 
CrazyBomber disse:
espera aí, isso quer mesmo dizer q vai ter 64 pipelines?

Não, eles falam em ALU (Arithmetic and logical unit) não em pipelines e o numero que eles dão de ALU é de 48 e não 64.

Segundo o artigo a R500 vai unificar pixel e vertex shaders. Na actual X800 está separado.


Pixel Shaders

A X800 XT tem 4 Quads.
quads8mc.jpg


Cada Quad tem 4 pipelines.
singlequad1ph.jpg


Cada pipeline tem 2 ALU
The pixel shader core in R420 remains largely the same as R300, with a texture address unit, and two ALU's each of which are co-issue capable, and dual issue capable together - this can result in up to 5 floating point operations executed per cycle in the best case scenario. The second ALU is fully featured, however the first is a smaller ALU which ATI haven't fully detailed its capabilities

shadercore0jt.jpg


2 X 4 X 4 = 32 ALU (16 full, 16 "limited")


Vertex Shader

Existe 6 Vertex pipelines.
While R300 featured 4 Vertex Shader units, R420 extends this to 6 units which, coupled with the increased clock rates and a few extra changes, can double the vertex performance of X800 in comparison to 9800 XT. The throughput per clock is increased to a maximum of 1.5 triangles per clock.
vertex0cf.jpg


Com 2 ALU por pipeline
1 Full, 1 Mini ALU per pipe

2 X 6 = 12 ALU (6 full, 6 "mini")

Numero total de ALU na X800XT é de 44 e tem 16 pipelines.
Para se ver a Pro, basta desactivar um Quad.
Conclusão, uma ALU não é um pipeline e não há relação directa.
E esta noticia ainda é só um rumor e os rumores na antiga geração deram em nada.

Pics e quotes "roubados" do B3d -> http://www.beyond3d.com/reviews/ati/r420_x800/
Metidas as imagens no imageshack.

É bem possivel que tenha alguma coisa mal. Se for esse o caso, corrijam.
 
Mais info...

ATI's R520 has eight Shader units

Shade us "Fudo" to SM 3.0+

THE NEXT generation ATI graphic chip codenamed "Fudo" will increase the number of Shader units from previous generation. When it comes to Shaders, R520 will have quite some fuel to pump those little programs.
We learned that R520 will have eight Shader units. The current R420/R423 generation that come under the X800 brand has six Shader units. These extra two units will certainly speed up shading operations and that's what developers need for endless shading loops.

We also have to add that R520 comes with support for Shader Model 3.0+.

We still stick to our original story that R520 "Fudo" will come in spring of 2005, let's say around Cebit 2005.

It's very unclear what Nvidia reaction will be. With NV48 and NV50 cancelled and with a very slim chance that it is working on rumoured NV47 re-spun chip we're still in the dark what Nvidia has against R520.

It's interesting to note that at its editor days NviDiA haven’t said a thing about its future high end graphic plans. It likes to keep things secret as long as it can.
 
Por um lado estou curioso em saber a resposta da Nvidia, mas esta R520 é MUITO interessante! :)


/me pensa ja em próximo upgrade... talvez esquecer SLI e ir para R520! :D
 
Zar0n disse:
O problema é k o preço dos VPU esta quase a alcançar o preço dos CPU.

1000€ para cada 1 dos topo de gama.
Se isso se confirmar, entao eh porque "eles" tao a tentar criar uma gama de graficas que esta para o mundo das graficas como os FX/P4 EE estao para o mundo dos cpu's.

Nao sei se tera assim tanta aceitacao ( sempre eh uma forma de nao haver mais procura que oferta na gama alta... :rolleyes: ).
 
Se realmente se confirmarem os rumores da noticia vai sair bomba esta r520 mas como smp disse deixem-nas poisar e inda faltam 1s mesecos valentes...

A nvidia tb não ficará d pé atrás de certeza...

btw n é em 2005 k sai o stalker???

Se já farcry doom's HL2 e outros são o k são com estas vga's nem csg imaginar o k virá daki a 1s tempos...daki a quanto tempo se poderá colocar a questão...para quando o fotorealismo em videojogos????
 
STALKER... bahhh nunca mais vem pa foraa :( ....
Realidade virtual... nós próprios sermos os "players" lolol... é as coisas que passam na TV e dps ficamos a matutar, para qd? :P
 
A Cebit 2005 é de 10 a 16 Março. Se eles lançarem lá a R520, a X850 vai ter uma vida util de 3 meses como topo de gama.

Quanto aos specs, os pormenores que eles dão na primeira noticia é sobre a R500, em que falam em unificar os shaders.
Na segunda dizem que tem 8 shader units e comparam com as 6 da R4xx. Mas as 6 na R4xx são vertex shader units.

Se calhar a R500 e a R520 não são da mesma familia........
 
Nemesis11 disse:
A Cebit 2005 é de 10 a 16 Março. Se eles lançarem lá a R520, a X850 vai ter uma vida util de 3 meses como topo de gama.

Quanto aos specs, os pormenores que eles dão na primeira noticia é sobre a R500, em que falam em unificar os shaders.
Na segunda dizem que tem 8 shader units e comparam com as 6 da R4xx. Mas as 6 na R4xx são vertex shader units.

Se calhar a R500 e a R520 não são da mesma familia........

Paper Launches é o que tá a dar, não viste as ultimas noticias que a X700XT vai ser substituida por uma variante X800 agora diz-me quantas X700XT encontras à venda? E quando é que supostamente a mesma já devia ter sido lançada?...pois

Isto mais parecem lançamentos para accionistas que para o publico pk esse so uma bela catrafada de meses dps é que em principio mete a vista em cima dos productos...
 
Sim, tens toda a razão.
Mas como a X850 tb é um paper launch, os 3 meses estão +/- correctos, isto se eles lançarem na Cebit.
A concurrencia é positivo, mas também tem este aspecto negativo dos "paper launch".

Quanto aos "8 shaders units", se for real, quase de certeza que são 8 vertex shader units (aka pipes)
Não faz sentido ter 8 pixel/vertex pipes.

Isto é a R4xx (16 pixel pipes/6 vertex pipes):
overviews.jpg


Ou a R500 não unifica os shaders ou a R520 não é da familia da R500 ou estas informações estão erradas (ou são "meias verdades").
 
LionGreen disse:
Porra assim não ha maneira de fazer um upgrade á gráfica da minha gráfica :005:

desculpa mas o em que é que a saida de novos produtos te impede de comprares o que quer que seja...

Se estás à espera do "produto maravilha" então nunca hás-de comprar nada....
 
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