My first PC

[Thatnewguy2154]

so it my first pc build and I need to know how many watts I should use
Specs:
Gigabyte GA-H81M-D3V
Seagate 1TB
MSI GeForce GTX 760
ARCTIC Arctic F12 PWM CO
Crucial 8GB
Intel Pentium 4 630 3.0GHz

I Also plan on OC the CPU for better performance hopefully to about 3.5HHz

 

[Zerk2012]

The processor don't even work with the motherboard.
http://www.gigabyte.com/support-downloads/cpu-support-popup.aspx?pid=4667

 

[ScrewySqrl]

as mentioned, the cpu won't work with the other parts. and the other parts are all a couple generations old now.

do you already have all this? (if so, we can work with it - a haswell CPU will work with the motherboard)

if not, what's your total budget and we can probably help you set up something more modern

 

[ScrewySqrl]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i3-6100 3.7GHz Dual-Core Processor ($110.99 @ SuperBiiz)
Motherboard: MSI MSI H110M Pro-VD Micro ATX LGA1151 Motherboard ($47.98 @ Newegg)
Memory: GeIL EVO POTENZA 8GB (2 x 4GB) DDR4-2133 Memory ($29.98 @ Newegg)
Storage: Toshiba 1TB 3.5" 7200RPM Internal Hard Drive ($42.89 @ OutletPC)
Video Card: Zotac GeForce GTX 750 Ti 2GB Video Card ($96.88 @ OutletPC)
Case: Zalman ZM-T1 PLUS MicroATX Mini Tower Case ($27.99 @ SuperBiiz)
Power Supply: XFX XT 400W 80+ Bronze Certified ATX Power Supply ($42.98 @ Newegg)
Total: $399.69
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-05-29 00:14 EDT-0400

this fits n your $400 budget