-Trim support adds a command to the SSD controller from the operating system that indicates which blocks on the drive have been written to. This provides the SSD with continued performance where it had seen a large decrease in performance in the past after extended periods of use, usually weeks-months, sometimes shorter depending on usage.
-This guide shows what needs to be done to successfully update an SSD to support Trim. This guide was done on a OCZ Summit 60GB SSD and is not a step by step guide but a general overview of what must be done to get full performance from an SSD.
-Update the SSD to the latest firmware following manufacturers instructions, for ocz this required making a dos bootable flash drive which was fairly simply and quick.
-Download the Ultimate Boot CD (UBCD) and then burn to a CD or Flash drive.
-Disconnect all SATA cables, and boot up to the UBCD, this disables the BIOS from locking the drive during POST. Once on the main UBCD screen or anytime after POST plug in the SATA cable from the SSD to be wiped.
-Follow the appropriate screens on the UBCD and run HDDerase.
-If your drive supports Enhanced Secured Erase, select this option as it takes under 10 seconds to complete.
-Reboot and Install Windows and your done.
Benchmarks of before and after the Update
-Average Transfer Rate increased from 190MB/s to 202MB/s!
-Maximum Read increased from 218MB/s to 232MB/s which finally meets the manufacturers specified read rate of 230MB/s!
-Increase in write speed of 512k from 76MB/s to 123MB/s!
Below are Screen Captures of the Benchmarks
OCZ SUMMIT 60GB Firmware 18
OCZ SUMMIT 60GB Firmware 19 W/ Trim
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