PowerColor R9 285 TurboDuo OC Review
Published by Marc Büchel on 29.10.14Page:
The card
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Like the name of the card indicates, the PowerColor Radeon R9 285 TurboDuo OC is equiped with PowerColors latest iteration of their TurboDuo cooler. In this case you get three pure copper heatpipes, where two have a diameter of 8 millimeter and the one in the center measures 6 millimeter. The heatpipes are not in direct contact with the core, there is a copper base-plate inbetween. Soldered to the heatpipes you find the fin stack which is being provided with fresh air via two 90mm fans.
The PowerColor Radeon R9 285 TurboDuo OC graphics card, or to be precise our sample
of it, allowed a maximum stable overclock of 1'000 MHz for the GPU and 1'550 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 1.20 Volts and the
memory ran at stock voltages.
For its Radeon R9 285 TurboDuo, PowerColor makes use of an AMD reference design PCB. The PCB is identical, the only changes we noticed is that the power design components are different and there is the full number of phases, 5+1+1+1 (GPU-Memory-PLL-PCIe) phases for the TurboDuo OC. Other than that PowerColor also put a small aluminium heatsink on the MOSFETs of the main VRM to actively cool them.
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The memory chips used are made by Elpida and carry the model number W2032BBBG-6A-F. They are specified to run at 1'500 MHz (6'000 MHz effective).
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