Question Will a mini pcie to full size pcie adapter affect GPU performance?

[Zebulaun]

So I have a GTX 1070 ti, a mini ATX board, and a mini PCIE to full PCIE adapter and I want to know what performance impact this adapter will have vs using a normal mobo. Any info will be greatly appreciated.

 

[k1114]

It's very rare for matx to have mpcie. What's the model number?