That's the older junkier one. Nearly everyone is going to tell you it's garbage. But I've never seen one die during testing like real garbage PSUs. In a hope of quieting these people down, here is a review from Toms.
I'm sorry, but garbage PSUs don't output 100% of their rated capacity. Yes, this isn't a great PSU. But here's the thing. You have a 95W CPU, and a no extra power needed (probably) 75W GPU. Flat out gaming with this system should only need ~200W or so. No way it pulls 250W or more. That's 50% of the output for that PSU. As long as you didn't let the PSU get very warm, it shouldn't be the cause of the issue. Anything can die however so it could be a PSU issue. What was the other PSU that was used to test? Can you test your CX500 in another unit to see if it works?Corsair’s budget-oriented PSU passes our lab tests with nary a hitch. When we check the efficiency, we find that the CX500 not only complies with 80 PLUS' Bronze spec, but has some leeway at medium and full load. Even operating at a low load, it is quite efficient (80% at 50 W, for instance). Measuring ripple and noise, the PSU not only complies with the ATX spec, but surprises us by keeping those brief spikes inside the specification