Fan Speed
When testing in a power supply laboratory it is difficult to take fan noise readings as the noise from the Sunmoon test equipment and air conditioning corrupts everything. The next best thing in our circumstances was reading off the fan speed with a tachometer to get an idea for the noise. The ambient temperature during testing held constant at 22 degrees, with 1 degree of variation. Each power supply had a consistent time period of 5 minutes to stabilise between each load scenario.
In my experience the following general relationships apply between noise levels and fan speeds, though it can vary greatly between the type of fan used.
- Below 800 RPM – Inaudible/Silent
- 800 to 1000 RPM – Barely audible
- 1000 – 1200 RPM – Audible but still quiet
- 1200 – 1400 RPM – Moderately noisy
- 1400 – 1800 RPM – Noisy
- 1800 RPM or higher – Intolerable
It’s probably only got a single PCI-E 6+2 because it’s not a true 450W PSU!
Not sure what you mean by that, it is a true 450W, it is capable of supplying 450W continuously.
It’s a true 450 W PSU
They may have put those cables for cost savings or even thinking about most exaggerated builds (for example FX9xxx), where the CPU itself can draw 200 W or more, the 8 pin PCIe connector would mean a 225 W GPU (75W+150W). That leaves you 25 W for storage and mb…
It’s a true 450 W PSU
They may have put those cables for cost savings or even thinking about most exaggerated builds (for example FX9xxx), where the CPU itself can draw 200 W or more, the 8 pin PCIe connector would mean a 225 W GPU (75W+150W). That leaves you 25 W for storage and mb…