The ATI HD 4770 fits in snugly between the HD 4850 and the HD 4830, in terms of performance at least. We tested a native ATI card, having previously tested an HIS Radeon HD 4770. Both retail for under £100 and result in excellent value.
At the very outset, what makes the ATI Radeon HD 4770 chipset special is that it is the world's first board manufactured on a 40nm process. This means that the card runs on lesser power and is cheaper to manufacture. If you take our word, we believe this is the way for graphics cards in the near future.
We received an ATI Radeon HD 4770 straight from ATI and it is smaller than both the HD 4830 and the HD 4850. ATI has taken cooling seriously and as a result we have a silent-running fan over the core and copper pipes built into the card. The card still requires an additional power input but heating and noise was hardly an issue. Like the ATI cards we reviewed before, the HD 4770 also has dual DVI ports and a single Video-Out port.
When we began our ATI Radeon HD4770 performance tests we hit a roadblock thanks to the beta drivers that ATI had provided us. As a result enabling anti-aliasing (AA) in our benchmark games in DirectX 10.1 resulted in the games crashing. So we ran the card through our tests with AA enabled under DirectX 9 and no AA under DirectX 10.1.
In 3D Mark '06 the ATI Radeon HD4770 produced a score of 12,718, less than 1,000 marks below the HD4850. In 3D Mark Vantage (High and Performance presets), the card managed 4,714 and 7,948 marks, less than 500 marks away from the HD 4850. This performance was carried forward even in the gaming benchmarks where the card either fell only slightly short from the HD4850 or even managed to beat it (especially in Far Cry 2).
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