Both models are based on the E-350 APU with Radeon HD 6310 graphics and Hudson D3 Fusion Controller Hub.
The 14-inch 4253 packs 4GB of memory, 320GB of storage, WiFi, gigabit Ethernet and a multitouch touchpad. Best of all, it's priced at just €399, so it's pretty good value for money. The 15.6-inch 5253 features 8GB of memory, which sounds like overkill, and 500GB of storage. It will sell for €499.
There's no word on battery life or weight, but both models seem rather promising, especially in terms of value. Although we already knew what to expect from AMD's new platform in terms of specs, the pricing comes as a pleasant surprise. We can probably expect to see even cheaper incarnations from other vendors shortly.