2015 MacBook Pro SSD Speed = Awesome in the Real World Too
Authorized Apple dealer B&H Photo loaned MPG the Apple 15.4" MacBook Pro Retina (Mid 2015), 2.8GHz / Radeon R9 M370X / 16GB / 1TB, the configuration MPG recommends for power users, photographers, videographers, etc. Save money on AppleCare too.
The diglloydTools IntegrityChecker program is about as optimized as any application can be, hence the speed benefits of the fast SSD in the 2015 MacBook Pro should be reflected in significant gains. But performance of the 2015 MacBook Pro with its 1TB flash drive is even better than the sustained transfer speeds imply, suggesting that the 2015 MacBook Pro SSD has lower latency and higher transaction rates on top of much higher sustained throughput. Extremely impressive.
Real World Shootout: IntegrityChecker Verify
Real World Shootout: diglloydHuge Photoshop Benchmark
This leap in real-world SSD performance represents the biggest gain MPG can recall ever seeing in an SSD changeover. Where is a revised Mac Pro with this new tech (and a 2TB option)?

While the gains are not as large for big Photoshop jobs, a halving of the time required is mighty impressive.