3DMark
We used 3DMark‘s ‘Fire Strike’ benchmark which is designed to be used on gaming PCs. We opted for the Normal setting, NOT the Extreme mode.
Gigabyte's Z97X-UD3H-BK shows positive performance in our batch of system-related benchmarks. The 3DMark Physics score is positive, and Sandra's Processor Arithmetic result puts the board in the top pair of contenders.
Memory bandwidth of the Gigabyte part isn't quite as strong as some of the contenders, most notably MSI and Asus. That said, the performance differences are likely to be negligible.