SSD Slowdown

jamor

I plan to install a second-generation Intel X-25 80GB SSD drive in my system. I have heard that SSDs suffer speed losses when they are written over compared to when they are new. How would a page file affect this?

—Jon Coulter

Yes, many SSDs suffer slowdowns when writing over memory blocks that have previously held data, which is why the TRIM command (see this month’s White Paper) was introduced. Windows 7 supports the TRIM command, which is basically a garbage-collection routine that prevents this type of slowdown during writes, and many drive manufacturers have released similar garbage-collecting programs—usually named wiper.exe or something similar—for you to run on your SSD periodically. Though Intel’s first-generation X-25M drives do not support TRIM, the second-generation drives, like the one you’re thinking of buying, do.


Many SSD's, like Intel's second-generation X-25M SSD, support the TRIM command, but the company's first-generation SSDs don't.

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