PSUs, GTXs, and Third World Countries

Before I begin, I just want to say I am new to the pc gaming world so please patient with me. I am thinking about ordering my first pre-built computer from Maingear. My job forces me to move every few years so I was thinking about their Protenza line because it would be easy to bring with me.

I want to get a decent video card; either a GTX 760, 770, or 780. Money is no issue, but I am concerned about the 450w power supply they offer. I e-mailed the company and they were very emphatic that 450w could handle a GTX 780, but after browsing this forum, I am a bit skeptical.

There is another issue: I will be using this computer in a third world country where the electrical infrastructure is not exactly stable or reliable and I am worried that might have an effect on the graphics card. I assume I will need to buy a surge protector, but aside from that, would there be an other issues?

Below are the rest of the specs - any help would be greatly appreciated!

Motherboard: Gigabyte® Z87N-WIFI Featuring 8011.11N Wireless
Power Supply: 450W Silverstone ST45SF 80 Plus Bronze Certified PSU
Processor: Intel® Core™ i7 4770K 3.5GHz/3.9GHz Turbo 8MB L3 Cache HD 4600
Hard drive: 250GB Samsung® 840 EVO SSD (w/TRIM)
Memory: 8GB Corsair® Vengeance™ DDR3-1866 1.5V (2x4GB)
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  1. the 450 is too low. I would have them install a sesonic or a cosiar gold level 750w power supply. if your going to places that down time is going to be an issue. (both of these brands have 5 year warranties on them.) the only other part you should get is a ups. make sure it rated more then you need. if it under sized it shut down when the power is lost. having it sized right will give you time to shut down. if the place you have loses power a lot...look into solar power for the home or a back up gen.
  2. Best answer
    Calculator to help you figure out how much power you need.

    I'd be skeptical too, in my novice view, for a 780 or 780 ti, I'd want at LEAST a 550W continuous power supply, and if it was going to be a 550W I'd even consider a Gold or platinum rated design also, though bronze should be fine.

    I tried your specs in that calculator and it seemed that 450W wouldn't be enough for you. Do Maingear not offer other options for PSU?
  3. Thanks for your help, guys!
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