Question I'm not sure what wattage PSU I need?

[Umbreon254]

I'm about to order the parts for my first pc. I went on newegg's power supply calculator and plugged my components into the drop-down lists and it told me my recommended PSU wattage is 386 watts. I used pcpartpicker too and that said 329 watts.

I also need to bear in mind I'll be using a wired mouse, wired keyboard, 3 additional case fans plus the one that comes with the case, a USB wireless adapter, at least temporarily, and a USB flash drive. But, someone please clarify, these all use tiny amounts of power, like less than 1 watt each.

And a 20 watt speaker potentially.

And then there's overclocking, which I assume the website's power supply calculator's didn't take into account but then again I don't know.

So with all that in mind I'm considering a 450 or 500 watt PSU.

Thoughts?

 

[Lutfij]

We'd be better able to help if we knew what the specs to your build was. List your specs like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:

You can leave the PSU area blank for this new build.

 

[Umbreon254]

OK.

Case:Corsair Carbide Series SPEC-04
CPU:AMD Ryzen 5 2600X
Motherboard:ASUS ROG STRIX B450-F
RAM:Corsair Vengeance 3200MHz 2 x 8GB
GPU:EVGA GeForce GTX 1660 6GB XC
Storage:WD Green 240GB SSD M.2 and 500 GB Seagate Barracuda HDD
PSU:

Windows 10 Home

Will overclock

Additional -
3 pack of upHere 120mm fans
Thumb drive wifi adapter for now
I always use a flash drive
20 watt speaker

Peripherals-
Monitor:VG0 Gaming Monitor | Nitro VG240YU | Black
Mouse: Just a pretty standard wired mouse
Keyboard:VicTsing Wired Keyboard Slim