Intel agressively promotes its Core i3/i5/i7 series, but we wonder: Does it make sense to replace a three-year old high-end PC? In the end, quad-core processors were already pretty powerful in 2007. We created a brand new system and a 2007 PC to compare.

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Sometimes, overclocking is the key to getting budget hardware humming along at enthusiast-class performance levels. But getting there requires extra cooling. Today we're examining the performance of four low-cost gaming enclosures under $50 bucks.

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