ATTO Disk Benchmark

The ATTO Disk Benchmark program is free, and offers a comprehensive set of test variables to work with. In terms of disk performance, it measures interface transfer rates at various intervals for a user-specified length and then reports read and write speeds for these spot-tests. There are some minor improvements made to the 2.46 version of the program that allow for test lengths up to 2GB, but all of our benchmarks are conducted with 256MB total length. Additionally, ATTO Disk Benchmark offers a queue depth range of 2-10, however our tests use the default value of 4. ATTO Disk Benchmark requires that an active partition be set on the drive being tested, which is formatted to the NTFS file system. Please consider the results displayed by this benchmark to be basic bandwidth speed performance indicators.

Our basic bandwidth speed tests begin with the OCZ Revo SSD installed on the X58-Express motherboard, as the ATTO Disk Benchmark tool performs file transfers ranging from 0.5 KB to 8192 KB. The 120GB model we received reveals 533 MBps maximum read speed that plateaus from 128-8192 KB file chunks at a queue depth of 4, and 453 MBps peak write bandwidth plateaus from 64-8192 KB similar to a single SandForce SSD. OCZ's reviewer guide suggests that ATTO be tested with a queue depth of 10, which offered slightly different results:

At QD-10 the OCZ RevoDrive improves 6 MBps to 539 MBps maximum read speed that plateaus from 128-8192 KB file chunks, and an identical 453 MBps peak write bandwidth plateaus from 64-8192 KB. Since all previous ATTO tests were conducted with the default queue depth of 4, here's how the collection stacks up:

Although not charted above, a pair of SandForce-driven SF-1200 SSDs configured with 128K-stripes in a RAID-0 set produced 579 MBps peak read speeds, and 545 MBps peak write bandwidth.

Drive Hardware

• ADATA S599 100GB SATA MLC SSD
• Corsair Nova V128 CMSSSD-V128GB2 SATA MLC SSD
• Corsair Force F100 CSSD-F100GB2 SATA MLC SSD
• Crucial RealSSD-C300 CTFDDAC256MAG-1G1 256GB SATA 6Gb/s MLC SSD
• G.Skill Phoenix Pro 60GB SATA MLC SSD FM-25S2S-60GBP2
• Intel X25-E Extreme SSDSA2SH032G1GN SATA SLC SSD
• Kingston SSDNowV+ SNVP325-S2 128GB SATA MLC SSD
• LiteOn LA-32M1S Strong-Page 32GB MLC SSD
• OCZ Agility OCZSSD2-1AGT120G 120GB SATA MLC SSD (Firmware version 1.5)
• OCZ Agility-EX OCZSSD2-1AGTEX60G 64GB SATA SLC (Firmware version 1.5)
• OCZ Agility 2 'Extended' OCZSSD2-2AGTE120G 120GB MLC SSD
• OCZ RevoDrive OCZSSDPX-1RVD0120 120GB MLC PCI-Express SSD
• OCZ Vertex OCZSSD2-1VTX120G 120GB SATA SSD (Firmware v1.5)
• OCZ Vertex-EX OCZSSD2-1VTX120G 120GB SATA SLC SSD (Firmware version 1.5)
• OCZ Vertex Turbo OCZSSD2-1VTXT120G 120GB SATA SSD (Firmware version 1.5)
• OCZ Vertex 2 'Extended' OCZSSD2-2VTXE120G 120GB MLC SSD (Firmware version 1.2)
• OWC Mercury Extreme Pro-RE SSDMXRE100 100GB MLC SSD
• Patriot Inferno PI100GS25SSDR 100GB MLC SSD
• RunCore Pro-V RCP-V-S2520-MCN 200GB SATA SLC SSD
• Seagate Momentus-XT Solid State Hybrid Drive ST95005620AS
• Seagate Barracuda-XT ST32000641AS 2TB 7200RPM SATA 6Gb/s Hard Drive
• Western Digital VelociRaptor WD3000HLFS 300GB 10,000 RPM SATA Hard Disk Drive
• WD SiliconEdge-Blue SSC-D0256SC-2100 256GB SATA SSD

In the next section, Benchmark Reviews tests sequential performance using the CrystalDiskMark 3.0 software tool...

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