I think that is a good deal for you.
Gaming performance depends on the performance of a single master thread.
Your i7-880 has 8 threads and a passmark rating of 5601. That is when all the threads can be fully utilized.
The single thread rating is 1362.
By comparison, the i5-3470 has 4 threads and a rating of 6638 and a single thread rating of 1914.
Some games require 4 threads to run, but I know of no game that requires more.
Few games can effectively use more than 4 threads.
I say it is a good deal for you.