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The ultimate Haswell PC is powered by a Core i7-4770K, a fast solid-state drive, 8GB of RAM, and a discrete graphics card. For all game lovers, it is terrific. By overclocking your Haswell CPU, you can enhance the PC's performance.

From Sand to Processor or How a CPU is made It is hard to believe, but a modern processor is the most complex finished product in the world. Here comes a question: What is so complex in this piece of metal?

A feature article at the TeraGrid website takes a look at the most common building blocks of today's supercomputers, the ubiquitous CPUs and GPUs. Interest in GPUs was already high when China's Tianhe-1A supercomputer achieved a number one TOP500 ranking using the power of the graphics chips.

"It's an amazing time once again to build a computer. Intel's "Ivy Bridge" CPUs alongside with the latest motherboards are the fastest and most compatible consumer components we've ever tested. There is native support for Thunderbolt, NVIDIA GeForce 6xx "Kepler" graphics cards, and Ivy Bridge in OS X Mountain Lion 10.8."

FXI is preparing to launch the Cotton Candy, a tiny computer that looks like a USB thumb drive. The device, which can run either Ubuntu or Android 4.0, has a dual-core 1.2GHz ARM Cortex-A9 CPU, 1GB of RAM, and a Mali 400MP GPU that allows it to decode high-definition video.

If your PC's been humming along under your desk for more than a year or two, I've got news for you: Chances are inside that case, half a dozen dust bunnies are dancing around your hard drive, leeching onto your CPU fan and fluttering about your motherboard having a grand old time. This is not good.