For our temperature testing, we measure the peak GPU core temperature under load. A reading under load comes from running the 3DMark Time Spy stress test for 30 minutes.
Temperature testing is a very interesting area to look at, especially when comparing the two BIOS options for the Aorus card. The first thing to point out is that both the Gaming OC and the Aorus perform very well here – the Aorus does have marginally lower edge and memory temperatures using its OC BIOS, but both sets of results are impressive and there's not a lot between the two. Do bear in mind, though, the Aorus is also running faster while maintaining these temperatures.
The Aorus' Silent BIOS, however, sees junction temperature hit 100C, with memory temperature up to 90C as a result of the lower fan speed. Both results are in spec, but they are also quite high, so I'd have liked to see the Silent BIOS run the clock speed a bit slower – maybe around 1800MHz – to help keep these temperatures down a bit.