ATTO is one of the oldest drive benchmarks still being used today and is still very relevant in the SSD world. ATTO measures transfers across a specific volume length. It measures raw transfer rates for both reads and writes and places the data into graphs that can be very easily interpreted. The test was run with the default runs of 0.5kb through 8192kb transfer sizes with the total length being 256mb.
Benchmark Results: The Octane 512GB drive falls just a bit short of hitting the rated specs on the writes of 400MB/s with a top speed of 357.58MB/s. The reads were spot on the specs hitting exactly the 535MB/s as promised. Without compressing the data, the writes are functionally slower than what we see from the SandForce drives but best the Intel and Marvell drives. Being a benchmark employing highly compressible data, the results here were somewhat predictable.
This test employs compressible data showing the best case scenario in terms of data throughput for the SandForce drives. Let’s have a look at a few others that use incompressible data to see how that impacts the scores.
We have been running the AS-SSD Benchmark app for over some time now and found that it gives a broad result set. The programmer has worked very hard on this software and continues to make updates often so if you use it, show him some love and send him a donation. There are now three tests that are found within the tool and we’ll show the results from all of them.
Benchmark Results: Moving to a benchmark that employs incompressible data, the Octane’s write numbers actually get a little closer to the 400MB/s specification and the writes fall back a bit. Still, the writes here are where the SandForce drives really take a performance hit and fall significantly behind the Indilinx powered Octane. Only the Intel 510 series drive comes close.
Benchmark Results: The graph above is very telling. For the SandForce drives, this graph usually ascends as you move from left to right on the writes data line showing the correlation between performance and data compressibility. Here, you can see the Indilinx Octane drive shrugging its virtual shoulder and showing indifference to the level of compressibility.