Today, AMD is launching a new mainstream graphics card based on another fresh GPU, codenamed Tonga. Typically, when the big GPU manufacturers launch a new high-end product, they pare that GPU down to create more affordable offerings with nearly identical feature sets. But Tonga is not simply a pared down version of Hawaii. AMD has actually updated and improved a couple of functional blocks in the GPU to boost performance and / or power efficiency. The first product built around the Tonga GPU is the Radeon R9 285. As its name suggests, this card falls into AMD’s current line-up in between the Radeon R9 270X and R9 280X, but there’s more to the story than just that...



Link: Hothardware