PowerColor Radeon PCS+ R9 390X 8GB Review
Published by Marc Büchel on 19.06.15Page:
The card
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.
The memory chips on the PCS+ Radeon R9 390X 8GB come from SK Hynix and carry the model number H5GC4H24AJR. They are specified to run at 1'500 MHz (6'000 MHz effective).
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