AMD released the ATI Radeon HD 5700 series of graphics cards this week, which means that AMD has successfully launched four brand new DirectX 11 graphics cards in less than a month! It all began on September 23rd when AMD released their 'Evergreen' series of Radeon 5800 graphics card with the Radeon HD 5870 for their high-end offering at $379.99. Exactly one week later they released the Radeon HD 5850, which featured two fewer SIMD engines and lower clock speeds, but came at a lower price point of just $279.99.  While those cards received the praise of both the media and the community for their amazing performance they are priced higher than what mainstream gamers are willing to pay.