Hello.
I want to use a slim server PSU to power a PC with an mATX motherboard in a small case. Server PSU pretty much only has reasonable 12V rail (26A) and I need to create 5V and 3.3V outputs using DC-DC converters. However I do not know what power draw to expect from 5V and 3.3V. In the past those voltage rails were specked very high. Many websites claim that today most power is taken from 12V but I cant find any actual data.
Has anybody actually measured the power draw from 5V and 3.3V rails in modern systems?
I think PCI-E 16x card can take 3A from 3.3V pins. Do modern graphics cards even fully use that 3.3V?
I want to use a slim server PSU to power a PC with an mATX motherboard in a small case. Server PSU pretty much only has reasonable 12V rail (26A) and I need to create 5V and 3.3V outputs using DC-DC converters. However I do not know what power draw to expect from 5V and 3.3V. In the past those voltage rails were specked very high. Many websites claim that today most power is taken from 12V but I cant find any actual data.
Has anybody actually measured the power draw from 5V and 3.3V rails in modern systems?
I think PCI-E 16x card can take 3A from 3.3V pins. Do modern graphics cards even fully use that 3.3V?