It should be able to run good with that processor. As for your gpu, what ram is on it? GDDR5 or DDR3? With the DDR3 card you should be good with 2xIR resolution and with the GDDR5 card 3xIR with most games and 4xIR with some.
https://forums.dolphin-emu.org/Thread-wii-donkey-kong-country-returns--25926
https://forums.dolphin-emu.org/Thread-wii-donkey-kong-country-returns--25926
Gaming Rig
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