Acredito que sua resposta pode ser encontrada na linha de comando.
$ man -k amd
amdgpu (4) - AMD RADEON GPU video driver
pamdeinterlace (1) - remove ever other row from a PAM/PNM image
pamdice (1) - slice a Netpbm image into many horizontally and/or vertically
radeon (4) - ATI/AMD RADEON video driver
man radeon
fornece uma lista de hardware suportado, bem como um link para seu wiki :
HARDWARE SUPORTADO
O driver radeon suporta placas de vídeo PCI, AGP e PCIe com base nos seguintes chips ATI / AMD
(nota: a lista não é exaustiva):
R100 Radeon 7200
RV100 Radeon 7000 (VE), M6, RN50 / ES1000
RS100 Radeon IGP320 (M)
RV200 Radeon 7500, M7, FireGL 7800
RS200 Radeon IGP330 (M) / IGP340 (M)
RS250 Radeon Mobility 7000 IGP
R200 Radeon 8500, 9100, FireGL 8800/8700
RV250 Radeon 9000PRO / 9000, M9
RV280 Radeon 9200PRO / 9200 / 9200SE / 9250, M9 +
RS300 Radeon 9100 IGP
RS350 Radeon 9200 IGP
Radeon XPRESS 200 (M) / 1100 IGP RS400 / RS480
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
RV505 / RV515 / RV516 / RV550
Radeon X1300 / X1400 / X1500 / X1550 / X2300
R520 Radeon X1800
RV530 / RV560 Radeon X1600 / X1650 / X1700
RV570 / R580 Radeon X1900 / X1950
RS600 / RS690 / RS740
Radeon X1200 / X1250 / X2100
R600 Radeon HD 2900
RV610 / RV630 Radeon HD 2400/2600/2700/4200/4225/4250
RV620 / RV635 Radeon HD 3410/3430/3450/3470/3650/3670
RV670 Radeon HD 3690/3850/3870
RS780 / RS880 Radeon HD 3100/3200/3300/4100/4200/4250/4290
Radeon HD 4330/4350/4550/4650/4670/5145/5165 / 530v / 545v / 560v / 565v
RV740 / RV770 / RV790
Radeon HD 4770/4730/4830/4850/4860/4870/4890
CEDAR Radeon HD 5430/5450/6330/6350/6370
REDWOOD Radeon HD 5550/5570/5650/5670/5730/5750/5770/6530/6550/6570
JUNIPER Radeon HD 5750/5770/5830/5850/5870/6750/6770/6830/6850/6870
CYPRESS Radeon HD 5830/5850/5870
HEMLOCK Radeon HD 5970
PALM Radeon HD 6310/6250
SUMO / SUMO2 Radeon HD 6370/6380/6410/6480/6520/6530/6550/6620
BARTS Radeon HD 6790/6850/6870/6950/6970/6990
TURQUIA Radeon HD 6570/6630/6650/6670/6730/6750/6770
CAICOS Radeon HD 6430/6450/6470/6490
CAYMAN Radeon HD 6950/6970/6990
ARUBA Radeon HD 7000 series
Série TAHITI Radeon HD 7900
Série PITCAIRN Radeon HD 7800
VERDE Radeon HD 7700 series
Série OLAND Radeon HD 8000
Série HAINAN Radeon HD 8000
Série BONAIRE Radeon HD 7790
KAVERI KAVERI APUs
KABINI KABINI APUs
HAWAII Radeon R9 series
MULLINS MULLINS APUs
Referência: http://xmodulo.com/how-to-check-graphics-card-on-linux.html
Este é um bom tutorial para visualizar informações sobre sua GPU. Eu gosto especialmente lspci | grep -E "VGA|3D"
e sudo lspci -v -s ##:##.#
(usando os números que você encontrou no comando anterior).