burst speed and an average read rate of 29.6MB/sec. Generally speaking, the more capacity a NAND flash drive has, the better the performance.Īll the same, the performance results using HD Tach on the last drive came back with 31MB/sec.
The tests revealed generally slower I/O throughput rates than the last version of the IronKey drive I tested, but to be fair, the last drive had 5GB of capacity and the one I was testing for this review had only 1GB.
The ATTO Benchmarking software showed a similar read rate, 24.4MB/sec, and a write rate of 14.8MB/sec. With the HD Tach utility, the IronKey returned a random access time of 4.2 milliseconds, an average sequential read rate of 25.7MB/sec and a burst rate only slightly higher of 26.9MB/sec. I tested the drive using ATTO Technology's ATTO Disk Benchmark v2.34, and Simpli Software's HD Tach v3.0.4 benchmarking utilities. An IronKey representative said this new version is also supposed to be faster than the last model due to improvements in the firmware. SLC has better native performance over MLC, and, perhaps most importantly, it has as much as 10 times the lifespan, up to 100,000 write/erase cycles.īecause the IronKey uses high-end SLC NAND, its throughput tends to be a bit higher than most MLC-based flash drives, particularly when it comes to write rates. What sets the IronKey apart from most other USB drives is that its maker uses high-end single-level cell (SLC) NAND flash memory chips as opposed to multi-level cell, consumer-grade (MLC) NAND. IronKey states that it is the world's only FIPS 140-2, Level 3 certified USB drive. I don't know that this falls under the term "upgrade," but the drive has received validation with the Federal Information Processing Standards 140-2, Level 3, which covers document processing, encryption algorithms and other IT standards for use in non-military government agencies, including their vendors and contractors.
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