ASUS R9 280X DirectCU II TOP 3 GB Review 30

ASUS R9 280X DirectCU II TOP 3 GB Review

Performance Summary »

Fan Noise

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

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

Fan Noise Measurement Setup

The tested graphics card was installed in a system that was completely cooled system passively. That is, passive PSU, passive CPU cooler, and passive cooling on the motherboard and 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 was conducted at a distance of 100 cm and 160 cm off the floor. Ambient background noise in 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, as a 3 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 were tested with a stressful game, not with Furmark.

Fan noise in idle is way too high, I have no idea why ASUS picked such noisy settings. Given the low idle temperatures and good cooler, the card could easily be dead silent. Noise levels are reasonable under load, but could be a bit quieter too. The card runs 70°C here, so ASUS could have an amazingly silent card on their hands if they raised the temperature threshold to 75°C, which would be even more impressive given how noisy other HD 7970 / R9 280X cards typically are.

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Nov 23rd, 2024 06:09 EST change timezone

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