question about GPU Link Speed 2.5 GT/s - 5.0 GT/s

[glofter1]

Hi everyone
I have question about GPU Link speed,
So I have 3 different hackintosh machine and at all machine GPU recognize like 2.5 GT/s this is speed of PCI-e 1.1
but on of machine have mobo GA-Z97x-sli ( PCI-e 3.0 ) and other have Asrock P67 ( PCI-e 2.0 )
so here is example I attached some photos on Z97x-sli I use GTX 970 OC - 4GB.
So is it possible to fix this ?
I use nvidia web driver.
Also I have original mac pro 5.1 and wen I put GTX 970 on it Link speed is 5.0 GT/s
I have original mac edition GTX 680 - 2GB and wen I put on Mobo Z97x-sli again recognize like 2.5 GT/s
So, can I fix this problem ?

 

[Fl0r!an]

System profiler might not be accurate (did you even get the PCI section without injecting anything manually?). Have a look here: http://forum.netkas.org/index.php/topic,8400.0.html

 

[glofter1]

01:00.0 VGA compatible controller: nVidia Corporation Unknown device 13c2 (rev a1) (prog-if 00 [VGA controller])

Subsystem: eVga.com. Corp. Unknown device 2972

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 16

Region 0: Memory at f6000000 (32-bit, non-prefetchable)

Region 1: Memory at <ignored> (64-bit, prefetchable)

Region 3: Memory at <ignored> (64-bit, prefetchable)

Region 5: I/O ports at e000

Capabilities: [60] Power Management version 3

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

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

Capabilities: [68] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+

Address: 00000000fee00000 Data: 4071

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: 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 #0, Speed unknown, Width x16, ASPM L0s L1, Latency L0 <512ns, L1 <4us

ClockPM+ Suprise- LLActRep- BwNot-

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

ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-

LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-

Capabilities: [100] #10de

Capabilities: [13c] #110



after lspci -vv .. system give me this result.
So I never try to inject anything PCI manual.

 

[Fl0r!an]

Okay, so maximum link speed is "unknown"... What about CUDA-Z?

 

[glofter1]

like that

 

[glofter1]

I start to read this ,https://www.tonymacx86.com/threads/ssdt-gpu-graphics-card-injection.183354/ but actualy I not have any DSDT.
I have 2 SSDT
I also attach my original F4 folder

 

[slim.jim]

The SSDT-HDMI-Nvidia-PEG0.aml is injecting your card which is why it shows up in the PCI tab in System Profiler.

 

[glofter1]

yes i already see that. So now I should create SSDT patch to recognize GPU like IGPU or ?
I use iMac 15.1

 

[Fl0r!an]

CUDA-Z reports full PCIE 3.0 speed.

 

[glofter1]

So what suggest to do ?