Our acoustic measurements are less precise on this mid-range test system, the noise floor of the totally quiet testing room is 34 dBA as measured with a Benetech GM1351 Digital Sound Level Meter.
We take our measurements with the decibel meter on the top and middle section of the case, overhanging the side panel (PSU side, not Motherboard tray side) by exactly 1 inch to avoid any airflow pressure coming from the exhausting H100i V2.
The underlying noise level of the system, emitted by all the non-GPU hardware combined, is 35 dBa thus anything above this level can be attributed to the graphics cards. The PSU is passive for the entire power output range we tested all graphics cards in and all CPU and System fans have a fixed fan speed completely isolating them from any changes in temperature across the system.
Noise levels were measured after 5 minutes of load under three scenario: Furmark, Unigine Heaven and desktop idle in sequential order with 2 minutes downtime in between each test.
Palit’s Super JetStream GTX 1080 Ti is not the quietest card on test but does very well to reduce noise levels over the Founder’s Edition card. It’s a couple of decibels louder than the Gigabyte GTX 1080 Ti which is noticeable but it’s still a very quiet card overall.
We measured around 1250-1350 RPM for the fans under heavy loading and unlike many other graphics cards the temperatures or fan speeds didn’t increase even when this graphics card was being used for prolonged periods of time. At idle the fans would switch off.