cpu-manufacturing posts

Brought on by yet another product refresh by the Big Green Eyeball Gang, BI wants to take a moment to crawl under the hood to discuss what this sort of evolution means in practical terms. Specifically, the architectural changes that occur at the manufacturing level for the chips themselves -- using smaller and smaller integrated circuit etchings, and making minor tweaks to the layout of the circuitry itself. The former is typically called the "manufacturing process," which refers to the photolithography that etches the actual circuitry onto the silicon wafers -- the creation of the chip itself. The latter, where minor tweaks are made to the circuit layout from batch to batch, is referred to as the "chip stepping," and is most commonly discussed when referring to CPUs within a single generation.

The easiest way to think about the signals traveling on the circuits inside of any chip is as though they're commuters. They have to do the speed limit (okay, so they're obviously not from New Jersey; unlike what the NHTSA dictates, 186,000 miles per second; it's not just a good idea, it's The Law); anything that improves how they get from point A to point B results in improved performance. Shortening the commute or offering a more efficient route to travel both serve this greater purpose.