Windows Vista ReadyBoost
The gradually growing popularity of the Windows Vista operating system makes it more and more adequate to test their ability to boost the computer storage system performance (with the help of ReadyBoost technology). As you know, Windows Vista performance may be increased with the help of a regular flash drive that may function as additional cache with lower access time as that to the system hard disk drive. Of course, these flash drives should meet certain requirements: they should be at least 256MB big and be fast enough to ensure at least 2.5MB/s data transfer rate during random 4KB block reading and at least 1.75MB/s during random 512Byte blocks writing.
The OS itself tests the USB flash drive connected to the USB port. The tests are performed for two above described modes and in case the results are good enough the system offers to employ ReadyBoost technology. However, we decided to use Intel IOMeter for more precise results. The performance was tested during a 10-minute test.
Purple and red colors on the diagram below stand for the results of those flash-drives that have successfully passed the performance test. Baby-blue color stands for the ones that failed.
The diagram for random reading of 4KB blocks shows that all four today’s A-Data solutions demonstrated much better results than the minimum required for proper functioning of ReadyBoost technology. Even the slowest one, PC14, took one of the middle spots in the ranking chart.
Unfortunately, the picture is not so nice during write speed tests. Nevertheless, all our testing participants managed to get past the sacred threshold for ReadyBoost (minimum 1.75MB/s speed). PD15 and PD14 had the biggest difficulty with it. Two other flash drives coped just fine with this task and took two neighboring spots on the ranking chart. Although about half of other solutions still proved to be faster.