small difference asus & msi 1080ti founder edition

When looking at the specs of the "geforce 1080ti founder edition" , I noticed some slight differences between brands but, I don't know what the impact is on performance


MSI GeForce GTX 1080TI Founders Edition 11GB
- freq : 1582mhz
- clockspeed : 1582 mhz
- PCI-e : 3.0x16

Asus GeForce GTX1080TI-11G Founders Edition
- freq : 1582 mhz
- clockspeed : 1480mhz
- PCI-e : 2.0x16


If there is difference and "if yes", which one should I choose?

(can I put both brands together when these specs are different?)

Thank you for any reply

tibit