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.
Sandra Processor Arithmetic
Sandra Memory Bandwidth
Performance between the Asus and Gigabyte budget-orientated motherboards is very close in Sandra benchmarks. Asus' X99-A takes a slight lead in terms of memory bandwidth and processor arithmetic scores, but the difference is practically negligible.
Gigabyte's X99-UD4 comes in 119 points behind the Asus competitor in the 3DMark physics test. Overall 3DMark score was also affected by the Gigabyte board's PCIe 2.0 link speed to our R9 280X graphics card.