Sapphire Vapor-X HD4870 2GB is the quietest HD4870 we’ve seen/heard so far. Vapor-X technology is truly a gem as it provides dead silence in 2D and not-so-dead but still silent 3D mode. This was one of the pros we’ve spotted on this card, but we can’t forget the HDMI out as well as 2GB of GDDR5 memory. Unfortunately, the additional memory didn’t do us much good in our today’s games and synthetic testing, but that doesn’t mean that there won’t be games that will benefit from 2GB of GDDR5 on this card. Overclocking the Sapphire’s card is an easy and safe task as the cooling keeps the temperatures in check at all times and in all scenarios. During operation, the temperatures hit 70°C, which is much better compared to reference card’s 89°C.

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