First time build, gaming oriented, $750-$900 price range

[canadiandream]

My 6 year old PC is lurching toward it's impending death. I've never built before, and don't have a lot of experience choosing parts.

Approximate Purchase Date: Not urgent.

Budget Range: $750-900.

System Usage from Most to Least Important: Gaming, movies/streaming, internet.

Parts Not Required: Sound card, optical drive, hard drive, monitor.

Preferred Website(s) for Parts: newegg.com.

Country: United States.

Parts Preferences: Intel i5 3560k, Nvidia Geforce 650 Ti, ATX mid-tower case.

Overclocking: No.

SLI or Crossfire: No.

Monitor Resolution: 1920x1080.

These are some parts I've been looking at:

http://pcpartpicker.com/p/1bjKw

I know it is missing a lot of things (RAM in particular), but this is what I have so far. Any input would be greatly appreciated.

 

[Hayden Jones]

If you aren't looking at overclocking or SLI, you might find the 650 Ti disappointing, at least get a 650 Ti Boost (closer to a GTX 660 preformance). Your PSU is also overkill without overclocking, you can easily look up a PSU calculator, and you will find that you probably only need a 550W-650W PSU. I'm also assuming that you don't need a mouse or keyboard, and that you want 8 GB RAM. Here is what I have come up with:

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
Motherboard: ASRock Z77 Extreme6 ATX LGA1155 Motherboard ($154.98 @ Outlet PC)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($59.40 @ Newegg)
Video Card: Asus GeForce GTX 660 2GB Video Card ($193.98 @ Newegg)
Case: Corsair C70 Arctic White (White/Black) ATX Mid Tower Case ($89.99 @ Newegg)
Power Supply: Antec High Current Gamer 620W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($79.99 @ Amazon)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($89.98 @ Outlet PC)
Total: $852.90
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-06-29 19:48 EDT-0400)

Edit: I am not an expert, look up all your parts and comparisons.

 

[canadiandream]

Thanks for the reply.

I used the PSU Calculator you linked to, and it looks like a 620-650 one would work. This may sound like a dumb question, but should possible future additions be kept in mind when choosing a power supply? Or should I just be focusing on what's sufficient and efficient for now?