with people buying mining cards that have moded bios might be good to have a reference to verify. even though mine "wasn't used for mining".
 
yes I know qbout the 8 bus speed. my mother board slot at one space between cards looking for new motherboard. also no sli cable yet looking to see if gigabytes sli hb bridge will work with my cards or not. since evga doesn't sell them anymore. I bought a 4 slot by accident and im stuck with that in the box collecting dust. took to long building my machine.
 

NVIDIA System Information report created on: 03/29/2019 21:02:06
System name: DESKTOP-40RSJQI
[Display]
Operating System: Windows 10 Pro, 64-bit
DirectX version: 12.0
GPU processor:  GeForce GTX 1070
Driver version:  419.67
Driver Type:  Standard
Direct3D API version: 12
Direct3D feature level: 12_1
CUDA Cores:  1920
Core clock:  1607 MHz
Memory data rate: 8.01 Gbps
Memory interface: 256-bit
Memory bandwidth: 256.26 GB/s
Total available graphics memory: 16302 MB
Dedicated video memory: 8192 MB GDDR5
System video memory: 0 MB
Shared system memory: 8110 MB
Video BIOS version: 86.04.50.01.70
IRQ:   Not used
Bus:   PCI Express x16 Gen3
Device Id:  10DE ,,,,,,,,,,,
Part Number:  G411 0020
GPU processor:  GeForce GTX 1070
Driver version:  419.67
Driver Type:  Standard
Direct3D API version: 12
Direct3D feature level: 12_1
CUDA Cores:  1920
Core clock:  1607 MHz
Memory data rate: 8.01 Gbps
Memory interface: 256-bit
Memory bandwidth: 256.26 GB/s
Total available graphics memory: 16302 MB
Dedicated video memory: 8192 MB GDDR5
System video memory: 0 MB
Shared system memory: 8110 MB
Video BIOS version: 86.04.50.00.70
IRQ:   Not used
Bus:   PCI Express x8 Gen3
Device Id:  10DE ,,,,,,,,,,,,,
Part Number:  G411 0020
[Components]
nvui.dll  8.17.14.1967  NVIDIA User Experience Driver Component
nvxdplcy.dll  8.17.14.1967  NVIDIA User Experience Driver Component
nvxdbat.dll  8.17.14.1967  NVIDIA User Experience Driver Component
nvxdapix.dll  8.17.14.1967  NVIDIA User Experience Driver Component
NVCPL.DLL  8.17.14.1967  NVIDIA User Experience Driver Component
nvCplUIR.dll  8.1.940.0  NVIDIA Control Panel
nvCplUI.exe  8.1.940.0  NVIDIA Control Panel
nvWSSR.dll  25.21.14.1967  NVIDIA Workstation Server
nvWSS.dll  25.21.14.1967  NVIDIA Workstation Server
nvViTvSR.dll  25.21.14.1967  NVIDIA Video Server
nvViTvS.dll  25.21.14.1967  NVIDIA Video Server
nvLicensingS.dll  6.14.14.1967  NVIDIA Licensing Server
NVSTVIEW.EXE  7.17.14.1967  NVIDIA 3D Vision Photo Viewer
NVSTTEST.EXE  7.17.14.1967  NVIDIA 3D Vision Test Application
NVSTRES.DLL  7.17.14.1967  NVIDIA 3D Vision Module
nvDispSR.dll  25.21.14.1967  NVIDIA Display Server
NVMCTRAY.DLL  25.21.14.1967  NVIDIA Media Center Library
nvDispS.dll  25.21.14.1967  NVIDIA Display Server
nvDevToolS.dll  25.21.14.1967  NVIDIA 3D Settings Server
PhysX  09.19.0218  NVIDIA PhysX
NVCUDA.DLL  25.21.14.1967  NVIDIA CUDA 10.1.131 driver
nvGameSR.dll  25.21.14.1967  NVIDIA 3D Settings Server
nvGameS.dll  25.21.14.1967  NVIDIA 3D Settings Server
 
any suggestion please let me know.