Video Cards entry: the comparative 2008
The retraction was an opportunity for AMD to return to the limelight in terms of graphics cards and after we have bestowed a Radeon HD 4870 X2 ultra high-end during the month of August, the firm of Sunnyvale released this time it references new entry. Exit the Radeon HD 3000 series and up to Radeon HD 4670 and Radeon HD 4550, including the chip expected in the shadow of recent GeForce 9400 and GeForce 9500 GT NVIDIA launched for the oldest there are now nearly two months .
The release of Radeon HD 4550 and Radeon HD 4670 serves as a pretext for a comparison of the current offer in terms of graphics chips entries range. What is the Radeon HD 4670 and its little brother, the Radeon HD 4550, with its predecessors, but also compared to the GeForce 9600 GSO launched in disaster NVIDIA? Issues that should find their answer in the following!
Radeon HD 4670 and architectural difference between AMD and NVIDIA
The Radeon HD 4670, aka RV730, is an opportunity for AMD to decline his latest graphics architecture dated étrennée with the Radeon HD 4850 and HD 4870. More efficient compared to the previous generation, through various changes, this architecture class graphics are DirectX 10.1 when NVIDIA merely for the time to take charge of DirectX 10. On paper, the Radeon HD 4670 has some 320 stream processors (against 120 for the previous generation, the series 3600), an assertion that we have somewhat explain or demystify the two players in 3D as AMD and NVIDIA frankly not the same definition processor flow.
When the company opted to the chameleon with its GeForce 8, for the use of scalar units, AMD has opted to integrate computing Vectorial units of type 5D (each unit can work on five components of a vector). On paper, the choice of AMD has the disadvantage of being less efficient in terms of computing power, while it requires optimizations in development, but it is in fine significantly better in terms of cost , AMD has the ability to bundle more computing units per chip, thanks to recent changes on the Radeon HD 4850 and 4870. On these chips AMD has indeed sacrificed some specifics of its architecture, as the Ring Bus memory controller, very costly in terms of transistors.
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