HOW WE TESTED
We recently did in-depth testing of AMD’s Ryzen 5 and 7 chips, so mimicked our tests for these CPUs as closely as possible, right down to the driver version. The meant we used the same SSDs, Ballistix memory, though we did have to change the cooler to fit the larger socket. Our test GPU was the Aorus GeForce GTX 1080 OC, and we set all game tests to the lowest resolutions to ensure the GPU wasn’t the bottleneck.
Looking at the results, it’s obvious that the i9-7900X is a monster, taking out the top spot in nearly every test. We were especially surprised at its gaming results, where the slower frequency should have seen it perform slower than the i7-7700K. It’s obvious the architectural improvements have made a difference to performance.
As for the i7-7740X, this was less than impressive, basically equalling the i7-7700K in most tests. There’s not much point in upgrading to the i7-7740X right now, unless you plan to climb the Core-X ladder further down the road.
When testing the motherboards, we installed the overclocking software that came with each board, but as you’ll see the vast majority of these did not work, likely due to the issues with Turbo Boost Max 3.0. We’re sure speeds of 4.8GHz and above should be possible with manual overclocks.