Running Two Different SKU 970 Cards

Case: I am currently running two different SKU 970 cards. The 04G-P4-2974-KR (EVGA GeForce GTX 970 04G-P4-2974-KR 4GB SC GAMING w/ACX 2.0, Silent Cooling Graphics Card) The 04G-P4-3975-KR (EVGA GeForce GTX 970 04G-P4-3975-KR 4GB SSC GAMING w/ACX 2.0+, Whisper Silent Cooling Video Graphics Card. One is listed as the SC and the …