How Do I Know When to Upgrade My PC or Just Build a New One?

Dear Lifehacker,
My computer is getting a little old. I built it myself, but I'm not sure whether it's worthwhile to upgrade individual things like my processor or video card or whether I should just start from scratch and build a new rig. How can I tell when it's time to upgrade and when I should start over? »5/05/14 2:36pm5/05/14 2:36pm

This Guy Beat Ocarina of Time In Less Than Twenty Minutes. Record!

Ah, speed-runners who do the impossible. A few days ago, the world record for beating Ocarina of Time was nineteen minutes and twenty seconds according to Zelda Speed Runs. Then, noted speed-runner Cosmo Wright came along and beat the game in a record nineteen minutes and fifteen seconds—and you can watch him do it… »8/23/13 1:00pm8/23/13 1:00pm

Solving a 5x5 Rubik's Cube in Under Seven Minutes Isn't Impressive, Unless You're Blindfolded

Demonstrating the memorization and motor skills of some sort of humanoid robot, Hungary's Marcell Endrey spends three and a half minutes getting to know a scrambled 5x5 Rubik's Cube, slips on a blindfold, and solves it in just over four minutes.

Not only did Endrey break the world speed record for solving a… »4/30/12 12:00pm4/30/12 12:00pm