# Use with any MMDB reader
Apple also refreshed the iPad Air lineup, bumping it to the M4 chip with 12GB of unified memory — a 50 percent increase over the previous generation. The tablet is available in 11- and 13-inch sizes and, according to Apple, delivers performance up to 30 percent faster than the M3 model and more than twice as fast as the M1 version.
，这一点在im钱包官方下载中也有详细论述
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@Bean("orderExecutor")