|Introduction, features & showcase|
|1080P Graphics Performance|
|4K Graphics Performance|
|Power Consumption & Overclocking|
We used a UMP meter to accurately measure and monitor the total power consumption of our test system. The average power consumption from each test is displayed in the chart. The PSU used is the Aerocool GT-1050SG which did its job well.
No surprises here, as expected, both cards consume around the same amount of energy as their predecessors. That said, Hawaii wasn't really known as energy-efficient graphics cards, so neither are these two SAPPHIRE cards on the Grenada rebrand. While the R9 390X offers performance close to what we've seen with the GTX980, it consumes 60Watt more, which is quite a bit.
We used a small increase in voltage to reach higher clockspeeds on both memory and core. This within a safe temperature range for both VRMs and the GPU itself. Using SAPPHIRE's own overclocking tool, it was easy to change those values in an effective way. For both cards, we reached a reasonable overclock from their default speed to 1204MHz on the core and 1656MHz on the memory. This is quite a bit higher than what we were able to reach on the MSI R9 290X Gaming.
|MSI R9 280X Gaming||MSI R9 290X OC Gaming||SAPPHIRE R9 390X Nitro||SAPPHIRE R9 390 Nitro|
|Max Core Clockspeed||1200MHz||1175MHz||1204MHz||1204MHz|
|Max Memory Clockspeed||1640MHz||1540MHz||1656MHz||1656MHz|
Even while Nvidia's Maxwell and Pascal cards overclock horribly good, we were not disappointed with what we reached on these cards today. Even in crossfire, we were able to maintain the same settings and run all games smoothly for hours. The boost in performance is certainly welcome when you're playing on 4K. SAPPHIRE's R9 390X wasn't able to reach the same kind of performance as an highly overclocked GTX980 with its own overclock, but certainly got a worthy increase in performance as well. Take a look at what we were able to achieve in the 3 different FireStrike tests:
Adding more voltages required a higher fanspeed due to the high temperatures, this predicts what's coming next!