AMD Will Soon Release a Driver Update To fix Radeon RX 480 PCIe Power Draw Issue
AMD Radeon RX 480 offers a compelling price per dollar performance, but it seems like the Polaris based graphics card draws much more power over the PCIe slot than might be considered reasonable. According to some reports, the Radeon RX 480 PCIe power draw is too high to violate the PCI Express standard.
Folks over at PC Perspective have done an in-depth analysis on the subject, concluding that the RX 480 does draw more power through the motherboard PCIe connection. The site notes that the PCI Express specification limits connected boards to drawing no more than 5.5 amps over the slot’s 12V rail, but the reference card pulls 7A of current on average, which reaches to 8.3A while overclocking.
As for the effects of this issue, PC Perspective said it could damage the pins and connectors on lower-cost motherboards over time by sustained operation, but does note that it hasn’t experienced any weirdness from running a single RX 480 in its test rigs.
AMD has released an official statement on the RX 480 PCIe power draw controversy, saying:
As you know, we continuously tune our GPUs in order to maximize their performance within their given power envelopes and the speed of the memory interface, which in this case is an unprecedented 8Gbps for GDDR5. Recently, we identified select scenarios where the tuning of some RX 480 boards was not optimal. Fortunately, we can adjust the GPU’s tuning via software in order to resolve this issue. We are already testing a driver that implements a fix, and we will provide an update to the community on our progress on Tuesday (July 5, 2016).
What are your thoughts on the Radeon RX 480 PCIe power draw? If you’ve purchased an RX 480, let us know your experience thus far.