XFX is starting its Radeon HD 4890 lineup with three models graded by the core clock-speed they come with. The base-model will carry reference clock speeds of 850/975 MHz (core/memory), the XFX HD 4890 XT, with clock speeds of 875/975 MHz, and the XFX HD 4890 XXX, with clock speeds of 900/975 MHz.

Something about the XXX model is interesting: almost every other AMD partner has a Radeon HD 4890 variant with the same core clock-speed: A certain ASUS Radeon HD 4890, Sapphire HD 4890 Toxic, HIS HD 4890 Turbo, and MSI HD 4890 OC, and a recent AMD slide exposé showing two distinct grades of Radeon HD 4890, with the second one being a "Radeon HD 4890 OC". This grade, according to Expreview, is believed to have high clock speeds, to increase competitiveness against the upcoming NVIDIA GeForce GTX 275 accelerator.

Coming back to the XFX HD 4890 XXX, the card (not pictured yet) comes in a peculiar "X"-shaped box. It comes with a free copy of Tom Clancy's H.A.W.X., and is backed by the company's "5-star support". It is expected to be priced above US $250, which is supposed to be the base-price for Radeon HD 4890.