Which seems to indicate their standard TUF caps are being used (https://www.asus.com/Microsite/mb/Tuf/why-tuf.htm).TUF CAPACITORS
+20% temperature tolerance and 5X-longer lifespan.
And at 4K, these two cards see 92% and 98% average frame rate increases respectively, with their minimums showing 71% and 86% improvements. So, that's not a particularly good "case in point", at least for CrossFire. The SLI scaling in that game is certainly less impressive, but makes at least some notable difference, which is more than can be said for many other games. In general, I agree that multi-card setups are typically not the best option, unless perhaps someone is not satisfied with the performance of the fastest cards, and is fine with spending a lot of money on something that will only work in a limited number of games, but you could have probably found a better example of a game that doesn't support multi-card setups well. : PIf you have a second matched GPU available, both CrossFire and SLI work, with CrossFire in particular putting up some impressive scaling results.