Created
January 31, 2026 13:02
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ASUS X670-P Bifurcation x16 to x8/x8 with two RTX 4090 cards
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| 03:00.0 VGA compatible controller: NVIDIA Corporation AD102 [GeForce RTX 4090] (rev a1) (prog-if 00 [VGA controller]) | |
| Subsystem: Micro-Star International Co., Ltd. [MSI] AD102 [GeForce RTX 4090] | |
| Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ | |
| Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- | |
| Latency: 0 | |
| Interrupt: pin A routed to IRQ 148 | |
| IOMMU group: 17 | |
| Region 0: Memory at f3000000 (32-bit, non-prefetchable) [size=16M] | |
| Region 1: Memory at e000000000 (64-bit, prefetchable) [size=32G] | |
| Region 3: Memory at e800000000 (64-bit, prefetchable) [size=32M] | |
| Region 5: I/O ports at e000 [size=128] | |
| Expansion ROM at f4000000 [virtual] [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: 00000000fee00000 Data: 0000 | |
| Capabilities: [78] Express (v2) Legacy Endpoint, MSI 00 | |
| DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s unlimited, L1 <64us | |
| ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ | |
| DevCtl: CorrErr+ NonFatalErr+ FatalErr+ UnsupReq+ | |
| RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ FLReset- | |
| MaxPayload 256 bytes, MaxReadReq 512 bytes | |
| DevSta: CorrErr+ NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend- | |
| LnkCap: Port #0, Speed 16GT/s, Width x16, ASPM L1, Exit Latency L1 <4us | |
| ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+ | |
| LnkCtl: ASPM L1 Enabled; RCB 64 bytes, Disabled- CommClk+ | |
| ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt- | |
| LnkSta: Speed 2.5GT/s (downgraded), Width x8 (downgraded) | |
| TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- | |
| DevCap2: Completion Timeout: Range AB, TimeoutDis+ NROPrPrP- LTR+ | |
| 10BitTagComp+ 10BitTagReq+ OBFF Via message, ExtFmt- EETLPPrefix- | |
| EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit- | |
| FRS- | |
| AtomicOpsCap: 32bit- 64bit- 128bitCAS- | |
| DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LTR+ 10BitTagReq+ OBFF Disabled, | |
| AtomicOpsCtl: ReqEn- | |
| LnkCap2: Supported Link Speeds: 2.5-16GT/s, Crosslink- Retimer+ 2Retimers+ DRS- | |
| LnkCtl2: Target Link Speed: 16GT/s, EnterCompliance- SpeedDis- | |
| Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS- | |
| Compliance Preset/De-emphasis: -6dB de-emphasis, 0dB preshoot | |
| LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete+ EqualizationPhase1+ | |
| EqualizationPhase2+ EqualizationPhase3+ LinkEqualizationRequest- | |
| Retimer- 2Retimers- CrosslinkRes: unsupported | |
| Capabilities: [b4] Vendor Specific Information: Len=14 <?> | |
| Capabilities: [100 v1] Virtual Channel | |
| Caps: LPEVC=0 RefClk=100ns PATEntryBits=1 | |
| Arb: Fixed- WRR32- WRR64- WRR128- | |
| Ctrl: ArbSelect=Fixed | |
| Status: InProgress- | |
| VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans- | |
| Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256- | |
| Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01 | |
| Status: NegoPending- InProgress- | |
| Capabilities: [250 v1] Latency Tolerance Reporting | |
| Max snoop latency: 34326183936ns | |
| Max no snoop latency: 34326183936ns | |
| Capabilities: [258 v1] L1 PM Substates | |
| L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2- ASPM_L1.1+ L1_PM_Substates+ | |
| PortCommonModeRestoreTime=255us PortTPowerOnTime=10us | |
| L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1- | |
| T_CommonMode=0us | |
| L1SubCtl2: T_PwrOn=10us | |
| Capabilities: [128 v1] Power Budgeting <?> | |
| Capabilities: [420 v2] Advanced Error Reporting | |
| UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- | |
| UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- | |
| UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- | |
| CESta: RxErr- BadTLP+ BadDLLP- Rollover- Timeout- AdvNonFatalErr- | |
| CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+ | |
| AERCap: First Error Pointer: 00, ECRCGenCap- ECRCGenEn- ECRCChkCap- ECRCChkEn- | |
| MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap- | |
| HeaderLog: 00000000 00000000 00000000 00000000 | |
| Capabilities: [600 v1] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?> | |
| Capabilities: [900 v1] Secondary PCI Express | |
| LnkCtl3: LnkEquIntrruptEn- PerformEqu- | |
| LaneErrStat: 0 | |
| Capabilities: [bb0 v1] Physical Resizable BAR | |
| BAR 0: current size: 16MB, supported: 16MB | |
| BAR 1: current size: 32GB, supported: 64MB 128MB 256MB 512MB 1GB 2GB 4GB 8GB 16GB 32GB | |
| BAR 3: current size: 32MB, supported: 32MB | |
| Capabilities: [c1c v1] Physical Layer 16.0 GT/s <?> | |
| Capabilities: [d00 v1] Lane Margining at the Receiver <?> | |
| Capabilities: [e00 v1] Data Link Feature <?> | |
| Kernel driver in use: nvidia | |
| Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia |
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