OCZ Vertex 4 SSD review

Memory (DDR4/DDR5) and Storage (SSD/NVMe) 367 Page 9 of 17 Published by

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SSD Performance Atto Disk Benchmark

Atto Disk Benchmark

One of the finest tools available to measure storage performance is ATTO. I love it to death as it is so reliable and produces such accurate results. The great thing about ATTO is that we can test with predefined block sizes. So we can test with a 32MB sequence of 4KB files, yet also 32MB in 1MB files. This gives us an excellent scope of overall performance with small and large files.

Vertex 4

But let's have a peek at actual read performance. I threw in a couple of comparable SSDs and a Western digital Velociraptor SSD. The Vertex 4 series in light blue shows decent performance, they start off a little bit slow though.

Vertex 4

The most important and difficult task for any storage unit is writing really small files fast, so have a look at that with this WRITE test. We scale 4KB block sizes to 1024KB block sizes in bursts of 256MB with a queue depth of 10 and then measure how fast the storage device is dealing with them.

Here we can see the strength of the OCZ Vertex 4 series, with large blocks it's fast, but with small block like 4K the SSD seems to haul ass. The write resutls are just really impressive there.

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