Intel’s billion-dollar mistake: Why chip flaws are so hard to fix

Chips are the brains of everything electronic. And like anything generated by software programs and high-tech factories, they can have flaws. Intel learned this the hard way today as it announced that it had a bug in a companion chip for its popular Sandy Bridge graphics-processor chips for PCs. The mistake will cost the company $300 million in lost sales and $700 million in repairs — making it the biggest such problem the company has ever seen.