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The human hearing system has different sensitivities at different frequencies. You could only achieve objective measurement in a sound test chamber. Why is this subjective you ask? Well, there is always noise in the background, from the streets, from the HD, PSU fan etc etc, so this is by a mile or two not a precise measurement. We bought a certified dBA meter and will start measuring how many dBA originate from the PC. I'm doing a little try out today with noise monitoring, so basically the test we do is extremely subjective. #ATI RADEON HD 5450 CROSSFIREX PC#Often you'll see massive active fan solutions that can indeed get rid of the heat, yet all the fans these days make the PC a noisy son of a gun. When graphics cards produce a lot of heat, usually that heat needs to be transported away from the hot core as fast as possible. Noise Levels coming from the graphics card And when we completely stress out the GPU 100% for a while, temperatures rise towards roughly 50 degrees C (122F), that's fine. When the card is clocked down and idling at 157 MHz we see a temperature of roughly 35 degrees C. Here's what we get returned: Card settingĪs you can see we get very respectable temperatures returned. Now we report at two stages the GPU(s) in IDLE and under stress. We measure at a room temperature of 21~22 degrees Celsius. We now fire off a hefty shader application at the GPU and start monitoring temperature behavior as it would be when you are gaming intensely and continuously, we literally stress the GPU 100% here as you can see in the graph. Let's have a look at the temperatures this huge cooler offers. PSU overload can cause it to break down.spontaneous reset or imminent shutdown of the PC.What would happen if your PSU can't cope with the load? There are many good PSUs out there, please do have a look at our many PSU reviews as we have loads of recommended PSUs for you to check out in there. That power supply needs to have (in total accumulated) at least 35 Amps available on the +12 volts rails.įor each card that you add, add another 25 Watts as a safety margin. You need a 350+ Watt power supply unit if you use it in a high-end system. A second card requires you to add another 25 Watts.That power supply needs to have (in total accumulated) at least 30 Amps available on the +12 volts rails. The card requires you to have a 300 Watt power supply unit at minimum if you use it in a mainstream system.So here's my power supply recommendation: We'll show you that in a graph in a minute. The IDLE and LOAD wattage is very okay, the card is clocking down massively, resulting in an all time low power consumption (for our test PC). The monitoring device is reporting a maximum system wattage peak at roughly 177 Watts. #ATI RADEON HD 5450 CROSSFIREX FULL#
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