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)