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 64MB transfer sizes with the total length being 256MB.
Benchmark Results: ATTO Disk Benchmark showed the Crucial P1 1TB SSD reaching speeds of up to 1.87 GB/s read and 1.60 GB/s write at a Queue Depth of 4. This is slightly below the drives rated sequential read/write speeds of 2000/1700 MB/s.
CrystalDiskMark is a small benchmark utility for drives and enables rapid measurement of sequential and random read/write speeds. Note that CDM only supports Native Command Queuing (NCQ) with a queue depth of 32 (as noted) and shows the highest score of five runs.
Benchmark Results: The Crucial P1 1TB drive topped out at 2002.39 MB/s read and 1725.41 MB/s write in the standard sequential write test that is done at Q8T1. Random 4K performance topped out at 176,200 read and 241,400 IOPS write. That exceeds the four corner speeds given by Crucial for the P1 1TB, so it doesn’t get much better than that.
Let’s look at some other benchmarks!