Best estimate for wattage used? (without using external hardware)

[Silba]

Hey guys! This is my current system and I'm looking for idle power consumption !

First off here's my system:

AMD FX 8350
Cooler Master Hyper 212 evo (stock fan - single fan)
Kingston HyperX Beast 8gb 1600mhz cl9 (2x4gb)
Radeon R9 270x 2GB
Gigabyte 970A-UD3P
128gb Samsung 840 EVO (Boot device)
1TB WD Caviar Black (Storage, Gaming)
500GB WD Caviar Blue (Backup - Rarely used)
Corsair Carbide 300R
2 Standard case fans pre installed
OCZ 650w PSU

http://valid.canardpc.com/zy71ju (shows cl11 - forgot to set it to 9 in BIOS)

As you can see my CPU is throttled to 1.4ghz right now since I used this when not gaming or even for light gaming like league of legends etc..

I would like to know how I would go about calculating the wattage used while my computer is running with my cpu @ 1.4ghz 0.9v and the graphics card idle with cpu usage ranging from 0%-10%. Only the SSD would be in use so both HDDs would be idle.

I just need a very rough estimate and don't really have a clue how to get these numbers... External hardware is out of the question since I'm mostly curious so cant justify buying a Watt Meter for a one time use.

 

[TomSkini]

All of the options you have provided are too low. I would say 500w is the sweat spot for that build.

 

[Silba]

All of the options you have provided are too low. I would say 500w is the sweat spot for that build.

I'm looking for mostly idle consumption - No heavy loads and max load being 10% cpu with gpu still idle.

 

[tiny voices]

Idle, you are looking at 75w or less.

Get a 500-600w PSU for this build.

 

[Silba]

Idle, you are looking at 75w or less.

Get a 500-600w PSU for this build.

Thank you for your answer Any chance you could help me understand how you reached that number?

And this is my current system, ive had it for a while im just now wondering its idle consumption

 

[tiny voices]

Just knowledge of how much certain parts use at idle. I have probably seen over 250 power benchmarks in my time. :lol: