The first 28nm GPUs have been listed by HP and Asus, to feature in their upcoming notebooks. The listed GPUs are Radeon HD 7670 and Radeon HD 7690 – both based on the Thames XT chip. HP has also listed drivers for Radeon HD 7470 on their website, on the eve of the London media event for AMD's London series of Radeon HD 7000M GPUs. 

The Thames XT chip features 128-bit GDDR5 memory. PCGamesHardware suggests it utilizes the VLIW-4 architecture, while other rumours point to a GCN based London series. HP Envy 17-3030ew features Radeon HD 7690M with 1GB GDDR5, working with a Core i7 Sandy Bridge based quad-core CPU. The Asus X53TK-SX058V is a more budget oriented notebook, featuring Radeon HD 7670M in addition to a Llano APU. 

AMD is expected to officially announce the London – branded Radeon HD 7000M – series today at a media event in London. All evidence point to the London series to be the first 28nm GPUs to launch, and also sets the scene for their desktop counterparts – Southern Islands – in early 2012. 

Source: PCGamesHardware