AMD Radeon RX Vega 56 8 GB Review 106

AMD Radeon RX Vega 56 8 GB Review

Performance Summary »

Fan Noise

In past years, gamers would accept everything for a little more performance. Nowadays, users are more aware of their graphics card's fan noise and power consumption.

In order to properly test how much noise a card's fan emits, we use a Bruel & Kjaer 2236 sound-level meter (~$4,000). It has the measurement range and accuracy we are looking for.

Fan Noise Measurement Setup

The tested graphics card is installed in a system that does not emit any noise on its own, using a passive PSU, passive CPU cooler, passive cooling on the motherboard, and a solid state drive. Noise results of other cards on this page are measurements of the respective reference design.

This setup allows us to eliminate secondary noise sources and test only the video card. To be more compliant with standards like DIN 45635 (we are not claiming to be fully DIN 45635 certified), the measurement is conducted at a distance of 100 cm and 160 cm off the floor. Ambient background noise inside the room was well below 20 dBA for all measurements. Please note that the dBA scale is not linear but logarithmic. 40 dBA is not twice as loud as 20 dBA since a 6 dBA increase results in double the sound pressure. The human hearing perception is a bit different, and it is generally accepted that a 10 dBA increase doubles the perceived sound level. 3D load noise levels are tested with a stressful game, not with Furmark.
Unfortunately, AMD did not include the idle-fan-stop feature with their card, which puzzles me since it has become a basic feature on nearly all boards on the market today, except for NVIDIA reference designs, which fail here as well.

Noise levels of the RX Vega 56 are significantly better than RX Vega 64, which is due to the improved power efficiency, which results in less heat, so the cooler won't have to work as hard. Still, with 42 dBA, it's not even close to being "quiet", which is something many GTX 1070/1080 custom designs achieve easily.

Also, I have to report some level of coil noise on the card, which is most prominent during high FPS scenes, i.e. menus or loading screens.

Fan Noise Idle
Fan Noise Gaming
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Apr 24th, 2024 20:29 EDT change timezone

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