MSI Radeon R9 390X Gaming 8G Review
Published by Marc Büchel on 22.10.15Page:
The card
The MSI Radeon R9 390X Gaming 8G ships with an extra power version of MSI's famous Twin Frozr V cooler. There is a total of five heatpipes, where there is one measuring 10mm in diamter and four measuring 8mm. All heatpipes have been routed through a very well made, nickel-plated baseplate, which evenly distributes the heat to all heatpipes. Looking at the fin stack we see that it's spanning over 2.5 slots and two 100mm fans take care of adequate cooling. As long as the GPU temperature is below 65°C the fans remain inactive. This is the case during most of the time the card is in idle (2D). As a part of the MSI Gaming series, the this particular cooler comes with a red on black color scheme and the overall build quality of the cooler is simply great.
The MSI Radeon R9 390X Gaming 8G graphics card, or to be precise our sample of
it, allowed a maximum stable overclock of 1'150 MHz
for the GPU and 1'600 MHz on the memory side. We used Furemark V1.11.0 Geeks3D
benchmark with 15 minutes duration. With these clocks we had to feed the GPU
with 1.258 Volts and the memory ran at stock voltages.
A closer look at the PCB shows that MSI 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 IR3567B from International Rectifier, which is taking care of all 6+2 phases. The IR3567P is acutally a dual-loop digital multi-phase buck controller.
The memory chips on the Radeon R9 390X Gaming 8G 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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