The MacBook Pro with Retina display comes in two different screen sizes: 13-inch starting at $1,299 and15-inch starting at $1,999. It's loaded with Mac OS X 10.9 Mavericks. Our test unit ran a 2.4 GHz Intel Core i5 processor and was loaded with 4 GB of RAM.This MacBook Pro doesn't include an Apple AirPort card. The Wi-Fi adapter is built into the laptop itself. Apple doesn’t provide many details on the Wi-Fi specs, but it is Wi-Fi Certified. The MacBook Pro was our top performer, which wasn’t a surprise since it has three spatial streams, whereas the other devices in this test only have one or two streams. The MacBook Pro delivered a maximum throughput of 463 Mbps and an average of 318 Mbps.