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Not surprisingly, the Radeon HD 4850 runs hot – all you needed to do was touch the card (a few split seconds was all we could bear) to confirm that. Still, it didn’t exceed the high temperatures posted by the Radeon HD 3870. Its record silence at idle also comes at a price, with a temperature 20°C higher than most cards in idle mode. This is another consequence of its limited heat dissipation. Temperatures never got abnormally high, however – but you will have to keep any heat-sensitive components away from a card like this, and including it in a home theater PC won’t be easy to manage.
By the way, here again the GeForce 9800 GTX + showed a slight benefit from the finer engraving of its GPU, since with an equivalent cooling system, the values we logged were 3 to 4°C below the 9800 GTX’.