Agora que encomendei a HD4870 :\
AMD's Response to G200b Slated for March
NVIDIA snatched the performance crown from ATI with the introduction of the GeForce GTX 295 accelerator, and its launch itinerary for CES 2009 includes the GeForce 285, NVIDIA's second fastest graphics accelerator. NVIDIA's campaign to regain the performance crown was spearheaded by the G200b graphics processor, that, while not offering anything new, helped cut manufacturing costs and reduced the thermal envelope of the GPU, making conditions favourable for a dual-GPU accelerator, the GeForce GTX 295.
AMD on the other hand, has announced price-cuts to respond to the GeForce GTX 295, by lowering the prices of its Radeon HD 4870 X2 accelerator. The G200b is likely to get a competitor from AMD by March, when the company is looking to release the industry's first GPU built on the 40nm manufacturing process, the RV740. But wait, there seems to be something larger on the cards, according to the various sources Hardware-Infos got in touch with. AMD is planning the RV790 graphics processor. It will be a current-generation GPU built on the next generation 40nm manufacturing technology. There is a lot of speculation surrounding the RV790's specifications, with some of the more plausible ones hinting it has two additional SIMD clusters (960 SPs) and a total 48 texture memory units (TMUs). Both the RV740 and RV790 are slated for March, there's also a little indication of AMD using the occasion of CeBIT for its announcements and product launches.
Hardware-Infos
RV790... Uma RV770 a 40 nm ou virá com "extras"? (mais shaders)
De qualquer forma a resposta a GTX295 promete ser de mais alto nível. Mesmo que seja um RV770 encolhido, tem potencial para mais clocks e queda de consumo considerável. Pode muito bem sair uma single GPU a encarar a GTX285 e com consumo ao nivel da 4850 e uma dual-GPU a papar a 295 ao pequeno almoço, se bem que não é difícil, tem visto que com os novos catalyst 9.1 a 4870x2 fica praticamente ao mesmo nível.
There is a lot of speculation surrounding the RV790's specifications, with some of the more plausible ones hinting it has two additional SIMD clusters (960 SPs) and a total 48 texture memory units (TMUs).
Agora que encomendei a HD4870 :\
Pois eu também encomendei uma mas se vamos estar sempre à espera da última moda nunca se compra nada! Já agora conseguiste por quanto a 4870 ?
Alguém consegue prever +/- onde poderão ir parar as 4870 em termos de preço após estas novas placas estarem disponiveis?
http://www.techpowerup.com/82071/RV790_and_RV740_Samples_Surface_Specifications_Gain_Clarity.htmlSome of the first batches, rather iterations, of RV790 and RV740 engineering samples have begun surfacing. Sources reveal bits and pieces of the new GPUs' specifications to Hardware-Infos. Being some of the first samples, these are merely iterations en route the development of the final product, though trend has it that preliminary information about AMD GPUs have a tendency of turning out true. We will exempt the RV770's final stream processor count from these.
The RV740, a mainstream GPU from AMD, is on course of becoming the first GPU in production, to be built on the 40nm manufacturing node. It carries 640 stream processors and a core clock speed of 700 MHz. It features a 128-bit wide GDDR5 memory bus, churning out bandwidth that rivals equally clocked GDDR3 with double the bus width. The memory bus will be clocked at speeds between 800 and 900 MHz (3.2 GT/s and 3.6 GT/s). Products will carry 512 to 1024 MB of memory. The GPU houses 32 texture memory units (TMUs) and 8 raster operations pipelines (ROPs).
As for the RV790, surprise: it shares the same clock speeds as the RV770XT: 750 MHz (core) and 900 MHz (memory). The samples were equipped with 1 GB of GDDR5 memory with chips made by Qimonda. The memory bus width remains unchanged at 256-bit. With so much similarity with the RV770, the shader domain is all that remains to serve as the differentiation factor, apart from the newer manufacturing process that hypothetically facilitates larger overclocking headroom. There is no word on the remaining specifications.
Se se mantem os clocks, terá que vir com mais shaders se quiser subir a performance, os tais 960...
Gosto da parte das memórias serem made in Qimonda Um pedacinho de Portugal.
Se se mantem os clocks, terá que vir com mais shaders se quiser subir a performance, os tais 960...
Gosto da parte das memórias serem made in Qimonda Um pedacinho de Portugal.
Aumentar a transistor count em quase 60% é igual a "redução de custos" e "aumento ligeiro da performance" ??
Cá para mim, ou é uma X1900 XTX (memória GDDR5 mais rápida, GPU com os mesmos clocks -essencialmente, é uma RV770 na mesma-) ou, e aqui acho mais provável, é uma GPU completamente nova de 40nm com entre 1000 e 1600 stream processors -os 960 sp's, o nome de código RV7xx e o suposto nome "HD49x0" sao apenas tentativas mal disfarçadas para espalhar FUD por parte da AMD-.
Nada de muito interessante por si só.
Mais uma gama? Pela logica, a HD4750 será mais fraca que por exemplo uma HD4830.
Caso contrario, vai provocar confusao na linha ja existente...