ATTO is a disk benchmark which allows testing of drives with a range of file transfer sizes from 4K up to 2048K. We ran tests with a 1GB span and a default queue depth of 4, which would simulate a fairly intense work environment. The data read and written from ATTO is able to be compressed, which is something Sandforce controllers thrive on, and asynchronous NAND doesn't have much trouble keeping up with synchronous in compressible transfers.
The results are pretty consistent across the board for the HyperX and for the other models. We primarily see that across various file sizes, there is little variance between the performance all of these Sandforce SF-2281 drives. The HyperX 3K is able to hold its own against more expensive drives such as the OCZ Vertex 3 MAX IOPS or the Patriot Wildfire without the more expensive Toggle NAND. With the exception of the 4K test, the HyperX actually outperforms, albiet slightly, every other drive in the read category. Its write capability tends to perform better with larger file sizes, which may indicate firmware tuning for higher peak read/write speeds, which may be used for marketing purposes. We also need to keep in mind that the lower-end drives also performed very well, so this test doesn't push the drives and really show what your extra money goes towards.