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i installed Win7 on an SSD (intel X25-M G2) and i guess it does not recognize it as an SSD since some services are still running that should be disabled automatically (like superfetch). I enabled AHCI-Mode in the Bios. Does someone know how to check if it uses the drive as an SSD?


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May be of some use:… – sblair Dec 12 '09 at 0:43
up vote 6 down vote accepted

The windows team have said this:

Will Superfetch be disabled on SSDs?

Yes, for most systems with SSDs.

If the system disk is an SSD, and the SSD performs adequately on random reads and doesn’t have glaring performance issues with random writes or flushes, then Superfetch, boot prefetching, application launch prefetching, ReadyBoost and ReadDrive will all be disabled.

Initially, we had configured all of these features to be off on all SSDs, but we encountered sizable performance regressions on some systems. In root causing those regressions, we found that some first generation SSDs had severe enough random write and flush problems that ultimately lead to disk reads being blocked for long periods of time. With Superfetch and other prefetching re-enabled, performance on key scenarios was markedly improved.

Source: Engineering Windows 7

So it seems that disabling Superfetch isn't a guaranteed way to check things. I'd guess that it's working fine, as long as the correct drivers are being used.

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