Testing the storage options will be done using CrystalDiskMark 5.2.1. Prior to testing, each drive will be securely erased using the onboard Secure Erase tool provided by ASUS. Between each test run, we will reboot the test system. Testing the SATA connection will be done using a SanDisk Ultra II 480GB SSD, which has a rated speed of up to 550MB/s for Sequential Read and up to 500MB/s for Sequential Write. The M.2 interface will be tested with a Kingston HyperX Predator 240GB drive, with a rated Sequential Read speed of up to 1400MB/s and a Sequential Write speed of 600MB/s. USB 3.1 Gen 1 will be tested with an external USB 3.1 hard drive dock along with the SanDisk Ultra II SSD.
USB 3.1 Gen 1
Storage Performance Results: Let’s be honest, we don’t really expect there to be a huge performance difference among the Z270 motherboards, unless there is an issue. The ASUS ROG STRIX Z270G Gaming runs well within any acceptable tolerance range, sometimes it’s the fastest, other time it’s a few MB/s slower. When you begin looking at these types of speeds, a few MB/s won’t make a huge difference.