Today marks an overhaul with AMD launching two new graphics cards designed to tackle the GTX 460. The Radeon HD 6870 and 6850 are being presented as the new mid-range offerings on AMD's line-up with a suggested retail of $239 and $199. Given the naming scheme, you'd expect the new cards to replace the existing Radeon HD 5870 and 5850, but that's not the case. The year-old Radeon HD 5870 and 5850 will be axed next month when AMD launches the Cayman-based Radeon HD 6970 and 6950 graphics cards. While the existing Radeon 5700 series is expected to take over the lower-end affordable graphics sector.