#What is readyboost performance test portable
#What is readyboost performance test free

#What is readyboost performance test free

* The device must have at least 235 MB of free space * The device must be capable of 2.5 MB/s read speeds for 4 KB random reads spread uniformly across the entire device and 1.75 MB/s write speeds for 512 KB random writes spread uniformly across the device

* The device should have an access time of 1 ms or less * Devices larger than 4 GB will have only 4 GB used for ReadyBoost * The capacity of the removable media must be at least 256 MB (250 after formatting) cite webДЇor a device to be compatible and useful it must conform to the following requirements: Title=Inside the Windows Vista Kernel: Part 2ДЄccording to Jim Allchin, for future releases of Windows, ReadyBoost will be able to use spare RAM on other networked Windows Vista PCs. ReadyBoost encrypts, with AES-128, and compresses all data that is placed on the flash device Microsoft has stated that a 2:1 compression ratio is typical, so that a 4 GB cache could contain upwards of 8 GB of data. Publisher=Microsoft] 250 MB to 4 GB of flash memory can be assigned. Title=ReadyBoost - Using Your USB Key to Speed Up Windows Vista When a compatible device is plugged in, the Windows AutoPlay dialog offers an additional option to use the flash drive to speed up the system an additional 'ReadyBoost' tab is added to the drive's properties dialog where the amount of space to be used can be configured. cite web|url= |title=ReadyBoost Q&A |accessdate= |last=Archer |first=Tom |coauthors=Ayers, Matt |date= |work=Tom Archer's Blog |publisher= MSDN Blogs] Flash devices are typically slower than the hard drive for sequential I/O, so to maximize performance, ReadyBoost includes logic to recognize large, sequential read requests and then allows these requests to be serviced by the hard drive. This caching is applied to all disk content, not just the page file or system DLLs.

Using ReadyBoost-capable flash memory (NAND memory devices) for caching allows Windows Vista to service random disk reads with performance that is typically 80-100 times faster than random reads from traditional hard drives. ReadyBoost is also used to facilitate SuperFetch, an updated version of Windows XP's prefetcher which performs analysis of boot-time disk usage patterns and creates a cache which is used in subsequent system boots.

#What is readyboost performance test portable

It works by using flash memory, USB 2.0 drive, SD card, CompactFlash or any kind of portable massive flash storage as a drive for disk cache. ReadyBoost is an operating system feature included with Microsoft's Windows Vista operating system.