A connect wall is a 4 x 4 grid, Each has 16 words inside it. They are broken into 4 groups of four words, Each has a relationship. The four words defining the relations are themselves related, And the relations are defined by a single word as well. More information on Stiv's excellent post.
Here is the connect wall:
DIGITAL | ADVOCATE | INFLUENCE | POTENTIAL |
CHAMP | CAPACITY | BRAIN | TIMBER |
COPSE | MAINFRAME | WINNER | PC |
CAPABILITY | ALLY | VINDICATOR | GROVE |
Hint 1:
COMPUTER is not one of the groups.
Hint 2:
The answer is relatively crunchy, says the title
Hints 3-5:
ADVOCATE and WINNER are in the same group. CAPACITY is not in the group where VINDICATOR is. BRAIN is not in the group where ALLY is.
Last Hint:
If you want to lead to the answer, just go zig-zag. (not the method but this is a hint okay)