通过 lspci 指令查看：

sudo lspci -vv

在返回的结果信息中找到与自己显卡相同的型号，如下：

02:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 960M] (rev a2)

Subsystem: Dell GM107M [GeForce GTX 960M]

Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-

Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR-

Latency: 0

Interrupt: pin A routed to IRQ 131

Region 0: Memory at de000000 (32-bit, non-prefetchable) [size=16M]

Region 1: Memory at c0000000 (64-bit, prefetchable) [size=256M]

Region 3: Memory at d0000000 (64-bit, prefetchable) [size=32M]

Region 5: I/O ports at e000 [size=128]

[virtual] Expansion ROM at df000000 [disabled] [size=512K]

Capabilities: [60] Power Management version 3

Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)

Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-

Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+

Address: 00000000fee00338 Data: 0000

Capabilities: [78] Express (v2) Endpoint, MSI 00

DevCap:MaxPayload 256 bytes, PhantFunc 0, Latency L0s unlimited, L1 <64us

ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 75.000W

DevCtl:Report errors: Correctable- Non-Fatal- Fatal- Unsupported-

RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+

MaxPayload 256 bytes, MaxReadReq 512 bytes

DevSta:CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-

LnkCap:Port #1, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <512ns, L1 unlimited

ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+

LnkCtl:ASPM Disabled; RCB 64 bytes Disabled- CommClk+

ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-

LnkSta:Speed 2.5GT/s, Width x8, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-

主要信息是其中的 LnkCap 为显卡理论的传输速率上限，LnkSta为显卡当前实际的传输速率，切记 LnkSta的值是会发生变化的，这是因为英伟达的显卡会根据实际使用情况进行自动切换。