Worked this out years ago with a single 7990 (dual card) and then 2 x 7990 (quad) and it was pointless unless I wanted to be close to the top of the benching charts.
Too many hardware issues, too many cooling issues for very little gain in very few titles.
For the last 2 years I pick the fastest single card I can afford (and still save money).
Too many hardware issues, too many cooling issues for very little gain in very few titles.
For the last 2 years I pick the fastest single card I can afford (and still save money).