sudo lspci -vnn (GPUs part)

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Cayman PRO [Radeon HD 6950] [1002:6719] (prog-if 00 [VGA controller])
        Subsystem: Micro-Star International Co., Ltd. [MSI] Cayman PRO [Radeon HD 6950] [1462:2460]
        Flags: bus master, fast devsel, latency 0, IRQ 28
        Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Memory at f0100000 (64-bit, non-prefetchable) [size=128K]
        I/O ports at 2000 [size=256]
        Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Kernel driver in use: radeon

01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Cayman/Antilles HDMI Audio [Radeon HD 6930/6950/6970/6990] [1002:aa80]
        Subsystem: Micro-Star International Co., Ltd. [MSI] Cayman/Antilles HDMI Audio [Radeon HD 6930/6950/6970/6990] [1462:aa80]
        Flags: bus master, fast devsel, latency 0, IRQ 32
        Memory at f0120000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Kernel driver in use: snd_hda_intel

02:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Juniper XT [Radeon HD 5770] [1002:68b8] (prog-if 00 [VGA controller])
        Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Juniper XT [Radeon HD 5770] [1002:e147]
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Memory at f0000000 (64-bit, non-prefetchable) [size=128K]
        I/O ports at 1000 [size=256]
        Expansion ROM at f0040000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
        Kernel driver in use: vfio-pci

02:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Juniper HDMI Audio [Radeon HD 5700 Series] [1002:aa58]
        Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Juniper HDMI Audio [Radeon HD 5700 Series] [1002:aa58]
        Flags: fast devsel, IRQ 17
        Memory at f0020000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
        Kernel driver in use: vfio-pci