HD Tune Pro - Sequential Performance
Version and / or Patch Used: 5.50
As mentioned, we're including the 240GB and 480GB Neutron XT models in this review for many of the tests. Their reviews will come later this month, possibly as early as next week. We like to compare products against others in the same capacity sizes / price ranges.
On the previous charts, we saw that the Neutron XT 960GB has lower performance at 64KB than it does at 128KB and higher block sizes. You can see that in this test with 64KB blocks to measure real-world sequential data. Some like to test with very large blocks to measure sequential performance, but rarely will a file use 8MB blocks. We're not concerned with unicorn performance in our reviews.
The Neutron XT 240GB doesn't seem to have the same issue with 64KB blocks, that model still delivers over 450 MB/s at this block size on average when reading across the user LBA range of the drive.
The sequential write performance is phenomenal in all three capacity sizes.
HD Tach - Sequential Write Performance after Random Writes
Version and / or Patch Used: 220.127.116.11
The HD Tach test that uses 128KB blocks caught us by surprise. The sequential write performance is amazing again with only a few deviations from the 425+ MB/s mark, but the sequential read performance shows low performance most of the way through. The sequential reads do spike up to nearly 500 MB/s, but those are quick bursts and not the normal level of performance.
We think the Neutron XT is using aggressive GC after the previous test and still recovering from the previous data writers. This is an area we'll explore in the future.
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