Hardware review and advice

Hi i was planning on building my first gaming pc with a max budget of 800 us dollars and was looking for a 2nd opinion about the build i put together my build includes / core i5 7500 / msi rx480 8gb msi armour / h270 tomahawk artic from msi / 1tb wd blue / 2x4 gb corsair vengance lxp / 650 watt evga bronze psu / phanteks p400 thanks for the help
 
Solution
The above 2400 Mhz RAM suggested by The Paladin fits the build perfectly.

Even though Seasonic S12G-550 is good quality PSU, it's also fully wired and you'll get a good deal of headache with cable management. Here, i suggest that you go with Seasonic G series PSU that too is good quality PSU but it is semi-modular (to ease the cable management) and is also cheaper than S12G series.
pcpp: https://pcpartpicker.com/products/compare/gYMFf7,xVkD4D,DPCwrH/

You can go with G-450 if you like since the total wattage of your PC is 300W and 450W PSU is more than enough for it.

Full build with G-450 and matching white PC case.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-7500 3.4GHz Quad-Core...
Aeacus is right,
Though I assumed you chose the RX480 because you would not go NVidia later but I could be wrong.
As for the power supply you can do much better in the 550w range
here is your system assuming you chose the ddr4-2400 (max board will support anyways) as you ram with a better power supply.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-7500 3.4GHz Quad-Core Processor ($192.33 @ OutletPC)
Motherboard: MSI H270 TOMAHAWK ARCTIC ATX LGA1151 Motherboard ($124.99 @ B&H)
Memory: Corsair Vengeance LPX 8GB (2 x 4GB) DDR4-2400 Memory ($68.97 @ Jet)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.33 @ OutletPC)
Video Card: MSI Radeon RX 480 8GB GAMING X Video Card ($244.99 @ Jet)
Case: Phanteks ECLIPSE P400 ATX Mid Tower Case ($64.99 @ Amazon)
Power Supply: SeaSonic S12G 550W 80+ Gold Certified ATX Power Supply ($76.46 @ Amazon)
Total: $822.06
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-03-15 04:11 EDT-0400
 

Aeacus

Titan
Ambassador
The above 2400 Mhz RAM suggested by The Paladin fits the build perfectly.

Even though Seasonic S12G-550 is good quality PSU, it's also fully wired and you'll get a good deal of headache with cable management. Here, i suggest that you go with Seasonic G series PSU that too is good quality PSU but it is semi-modular (to ease the cable management) and is also cheaper than S12G series.
pcpp: https://pcpartpicker.com/products/compare/gYMFf7,xVkD4D,DPCwrH/

You can go with G-450 if you like since the total wattage of your PC is 300W and 450W PSU is more than enough for it.

Full build with G-450 and matching white PC case.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-7500 3.4GHz Quad-Core Processor ($192.33 @ OutletPC)
Motherboard: MSI H270 TOMAHAWK ARCTIC ATX LGA1151 Motherboard ($124.99 @ B&H)
Memory: Corsair Vengeance LPX 8GB (2 x 4GB) DDR4-2400 Memory ($63.99 @ Newegg)
Storage: SK hynix SL308 120GB 2.5" Solid State Drive ($58.75 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.33 @ OutletPC)
Video Card: MSI Radeon RX 480 4GB ARMOR OC Video Card ($179.99 @ Newegg)
Case: Phanteks ECLIPSE P400 ATX Mid Tower Case ($67.50 @ Newegg)
Power Supply: SeaSonic 450W 80+ Gold Certified Semi-Modular ATX Power Supply ($64.99 @ SuperBiiz)
Total: $801.87
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-03-15 04:27 EDT-0400

I also added SSD for OS and applications to reduce boot up and loading times. If you don't want a SSD, kick it out and save $58.75.
 
Solution

Aeacus

Titan
Ambassador