They are all important when one considers at-large bids in the CFP. Here are the ones against fellow P4s to keep an eye on:
August 30
TCU at Stanford
August 31
Penn State at West Virginia
September 6
BYU at SMU
September 7
Arkansas at Oklahoma State
Pittsburgh at Cincinnati
Iowa State at Iowa
Kansas at Illinois
Colorado at Nebraska
Mississippi State at Arizona State
Houston at Oklahoma
Baylor at Utah (not a misprint; not considered a conference game)
Texas Tech at Washington State (Wazzu not P4 but first season as a have not)
September 13
Arizona at Kansas State (not a misprint; not considered a conference game)
September 14
West Virginia at Pittsburgh
September 21
TCU at SMU
October 5
UCF at Florida
August 30
TCU at Stanford
August 31
Penn State at West Virginia
September 6
BYU at SMU
September 7
Arkansas at Oklahoma State
Pittsburgh at Cincinnati
Iowa State at Iowa
Kansas at Illinois
Colorado at Nebraska
Mississippi State at Arizona State
Houston at Oklahoma
Baylor at Utah (not a misprint; not considered a conference game)
Texas Tech at Washington State (Wazzu not P4 but first season as a have not)
September 13
Arizona at Kansas State (not a misprint; not considered a conference game)
September 14
West Virginia at Pittsburgh
September 21
TCU at SMU
October 5
UCF at Florida