HD Tune Pro - Sequential Performance
Version and / or Patch Used: 5.50
Reading across the entire user available span of the Ultra II 480GB gave us an average speed of 473.4 MB/s. The only other drive on our chart that is faster in this test is the SanDisk Extreme PRO, SanDisk's flagship consumer SSD.
The Ultra II's SLC layer gives us a sequential write performance boost for a small slice of this test. Sequential write performance quickly drops down to TLC levels, around 200 MB/s with 64KB data.
Here we see the actual test, and can spot how far into the test the performance dips. Even though the SLC area can write at 430 MB/s, when it has to dump the data down to TLC, the writes slow to just over 200 MB/s.
HD Tach - Sequential Write Performance after Random Writes
Version and / or Patch Used: 188.8.131.52
After writing to the full span of the drive with sequential data, and then a handful of random data write bursts, we run HD Tach to see what real-world, light workload sequential performance is like. The Ultra II 480GB has a few drops to roughly 110 MB/s, but for the most part, performance stays above 150MB/s and averages 200.9 MB/s.
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