Greg Ryder

By now, you've probably heard all about Bitcoins. But what are they? And are people actually striking it rich "mining" these things? Today, we'll find out with a first-hand look into the world of this crypto-currency, straight from a Bitcoin miner.

We've received many emails from readers asking about the phenomenon known as micro-stuttering and what it means to multi-GPU setups in CrossFire and SLI. After running plenty of benchmarks, we're ready to weigh in on what turns out to be a real issue.

It takes guts to try passively cooling a 127 W graphics processor. PowerColor sells the first Radeon HD 6850 we've seen topped only with a heatsink. Does the triple-slot cooler do its job, or is Barts simply too complex of a GPU to cool like this?