Apple's new 15-inch Retina MacBook Pro, unveiled on Tuesday, didn't include a processor upgrade due to Broadwell delays, but it did get a Force Touch trackpad and one other major improvement -- new PCIe-based flash storage that Apple says is 2.5 times faster than the flash storage in previous-generation machines, with throughput up to 2GB/s.
In benchmark testing conducted by French site MacGeneration [Google Translate], the entry-level 2.2GHz 15-inch Retina MacBook Pro with 16GB RAM and 256GB of storage lived up to Apple's claims, demonstrating impressive read/write speeds that topped out at 2GB/s and 1.25GB/s, respectively, in QuickBench 4.0.
Like the 2015 13-inch Retina MacBook Pro and 13-inch MacBook Air, the revamped 15-inch Retina MacBook Pro uses a solid state drive manufactured by Samsung. As noted by MacGeneration, it does not use the faster NVM Express SSD protocol that the 13-inch model was updated to, suggesting future machines could see even greater performance improvements with a swap to the next-generation protocol and with continued leaps in SSD technology.
Apple's 15-inch Retina MacBook Pro is available from the online Apple Store at prices that start at $1,999. The notebooks continue to use Haswell processors, but should see performance boosts due to the faster solid state drives.