![]() ![]() The fan will potentially run at full speed, so if you would like to reduce the speed of the fan you will need to adjust the fan speed setting in your BIOS or use fan control software such as SpeedFan in Windows. So you can plug the 4-pin fan connector onto the 3-pin motherboard fan header, leaving the fourth pin not connected to anything. Screw hole spacings and fan sizesĮlectrically, there is no problem doing this - the fourth pin on the fan cable is used purely for PWM control and is not needed in order for the fan to run. Note that the mounting hole measurements shown below are taken horizontally or vertically between the holes and not diagonally. If you know the distance between the fan mounting screw holes but don’t know what fan size to order, please see the following table. If you have any questions about which fan you should order, please don’t hesitate to get in touch. All our fans are 25mm thick unless otherwise stated. ![]() #QUIET 3 PIN FANS PC#This isn’t really dictated by customer preference, but more by recent designs of PC cases.Īs for the thickness (depth) of the fan, generally 25mm (1 inch) is by far the most common depth, although smaller fans can have shallower depths such as 15mm or even 10mm. The sizes of all the fans on our website are shown as measured along any one of the fan’s four sides, NOT the distance between the fan’s screw holes! Our most popular fan size is 120mm, followed by 80mm. We reduced the distance to be able to better distinguish acoustics of the very quiet graphics cards.The size of fan you need will generally be determined by the size of the fan fitting position in your PC case. Our previous noise-level measurements took place at a distance of 1 m. The microphone is recalibrated at least once a month. Noise level measurements are conducted using a 1/2" calibrated measurement microphone that records onto the host PC using a digital audio processing pipeline.Depending on the fan-control algorithm, this can often take quite some time. We let the card heat up and wait for fan speed to no longer change.Noise results of other cards on this page are measurements of the respective reference design.We're not using Furmark because it creates too high a load that forces fans to run faster than what is encountered during typical gameplay.To ensure 100% loading of the GPU, the render complexity is set dynamically so that each card operates at peak performance without being CPU limited.All cards are loaded with the same test: a custom-engineered game-like load in Unreal Engine 4 that always renders the same frame at 60 FPS to minimize variance.The system does not emit any noise on its own, all components are passively cooled. The tested graphics card is installed in an open bench system.Once temperatures are stable (no increase for two minutes), we stop the load and record how the card cools down over time. This shows you the thermal behavior of the card and how the fans ramp up as temperatures increase. Next, we start a constant 100% gaming load, recording several important parameters while the test is running. Thermal AnalysisFor this test, we first let the card sit idle to reach thermal equilibrium. The data in the table above shows results for similar cards, achieved in identical conditions during previous TechPowerUp reviews.Others, such as ambient temperature, case design, and airflow pathway affecting the GPU, can be mitigated to certain extents. Some, including clock speed, voltage settings, cooler design, and production variances, are beyond the control of the end user. Please note that GPU temperature is contingent on a variety of factors.This combination helps dictate cooling needs and provides context for how well the thermal solution performs. We report these GPU temperatures under a constant load for ease of comparison, as well as an idle state most end users will experience often.GPU temperatures listed here are based on GPU-Z measurements of the on-chip temperature sensor. ![]()
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