Uh, the power supply is sharing the output of the 3.3V and 5V rails. If either of them make the max rated limit (according to the label) here is what you really end up with.
3.3V = 26A holds the 5V to 26A.
5V = 45A holds the 3.3V to 0A.
In reality, according to the label, there is no way for the 5V line to reach 45A. The highest it can get and not exceed the combined maximum output is 44A, and that is with 0A on 3.3V, which is not going to happen).
I have doubts the power supply is going to hold up under the load of a 9800 video card.