La carte
PowerColor decided to equip their Radeon R9 390X with the latest iteration of their triple fan cooler. A closer look at it shows there is a total of four heatpipes, whereas one measures 10 millimeter in diameter, two measure 8 millimeter and apart from that there is one 6 millimeter heatpipe. All heatpipes have been soldered to the dense and large fin stack, providing good cooling. PowerColor meanwhile also offers fans, which do not spin, when the temperature is below a certain threshold. This makes this particular card inaudible, when the system is in idle, or in other words when there is no load on the GPU. Under load conditions the fan profile has been setup to keep the card at 65°C max. If it were us to make the fan profile we would have reduced the fan speeds in favoer of a lower noise level.the fans do not start to
spin. Under high-load the noise level is almost inaudible, subjectively
speaking.
The PowerColor PCS+ Radeon R9 390X 8GB graphics card, or to be precise our sample of
it, allowed a maximum stable overclock of 1'120 MHz
for the GPU and 6800 MHz on the memory side. We used Furemark V1.11.0 Geeks3D
benchmark with 15 minutes duration and 3DMark Fire Strike Extreme.
A closer look at the PCB shows that PowerColor equipped this graphics card with
a 6+1+1
phase power design. The GPU gets its current from six phases and one
phase is taking care of the memory apart from another phase in charge of PLL.
Checking the voltage regulation chip we find an IR3567P from International Rectifier for the GPU. Apart from that the PowerColor is making use of very high-quality IOR 3551M chips regarding the phases.
La carte est équipée de puces mémoires H5GC4H24AJR de
chez SK Hynix. Ces puces sont faites pour fonctionner à 1500 MHz (6000 MHz
effectif) d'après les spécifications du fabricant.