Hardware
From cchtml.com
Officially Supported (Catalyst & Open Source)
The following hardware is supported by current releases of the Catalyst/fglrx driver. Open source drivers will work as well. Note that RadeonHD 6xx0 chips will need kernel 2.6.38 for open-source mode-setting, xf86-video-ati/radeon 6.14.0 for 2D acceleration (EXA/Xv), and Mesa 7.11 for 3D acceleration.
* R600 Radeon HD 2900 * RV610/RV630 Radeon HD 2400/2600, M71, M72, M74, M76 * RV620 Radeon HD 3450/3470, M82 * RV635 Radeon HD 3650/3670, M86 * RV670 Radeon HD 3850/3870, M88 * RS780 Radeon HD 3100/3200/3300 * RS880 Radeon HD 4100/4200/4290 * RV710 Radeon HD 4350/4550, M92 * RV730 Radeon HD 4650/4670, M96 * RV770 Radeon HD 4850/4870, M97, M98 * CEDAR Radeon HD 5450 * REDWOOD Radeon HD 5550/5570/5670 * JUNIPER Radeon HD 5730/5750/5770 * CYPRESS Radeon HD 5830/5850/5870 * HEMLOCK Radeon HD 5970 * PALM Radeon HD 6250/6310 * CAICOS Radeon HD 6350/6450 * TURKS Radeon HD 6570/6670 * JUNIPER Radeon HD 6750/6770 * BARTS LE Radeon HD 6790 * BARTS Radeon HD 6850/6870 * CAYMAN Radeon HD 6950/6970 (requires Catalyst 11.4b; open-source requires kernel 2.6.39) * ANTILLES Radeon HD 6990
Yeah that's what I'm takilng about baby--nice work!
Radeon (Catalyst Legacy & Open Source)
ATI/AMD dropped Catalyst support for these cards in Catalyst 9-4. These cards are supported with the legacy ATI 9-3 Catalyst release, but you MUST use a kernel 2.6.28 (or earlier) and Xserver 1.5 (or earlier). For example, you can use Catalyst 9-3 if you're running Ubuntu 8.04 or Debian Lenny/5.0. Open source support is good and 3D is still improving.
* RS400/RS480 Radeon XPRESS 200(M)/1100 IGP * R300 Radeon 9700PRO/9700/9500PRO/9500/9600TX, FireGL X1/Z1 * R350 Radeon 9800PRO/9800SE/9800, FireGL X2 * R360 Radeon 9800XT * RV350 Radeon 9600PRO/9600SE/9600/9550, M10/M11, FireGL T2 * RV360 Radeon 9600XT * RV370 Radeon X300, M22 * RV380 Radeon X600, M24 * RV410 Radeon X700, M26 PCIE * R420 Radeon X800 AGP * R423/R430 Radeon X800, M28 PCIE * R480/R481 Radeon X850 PCIE/AGP * RS482 Radeon (Xpress) 200 * RV505 Radeon X1300, M52, M62 * RV515 Radeon X1400, M54, M64 * RV516 Radeon X1500 * RV550 Radeon X2300 * R520 Radeon X1800, M58 * RV530/RV560 Radeon X1600/X1650/X1700, M56, M66 * RV570/R580 Radeon X1900/X1950, M68 * RS600/RS690 Radeon (Xpress) X1200/X1250/X1270 * RS740 Radeon X2100 * FireGL T2 (4154) * FireGL V3100 (5B64) * FireGL V3200 (3E54) * FireGL V3300 (5E49) * FireGL V5000 (5E48) * FireGL V5100 (5551) * FireGL V7100 (5550) * FireGL X1 (4E47) * FireGL X2-256/X2-256t (4E4B) * FireGL X3-256 (4A4D) * FireGL Z1 (4147)