Viper's Lair has posted a review on the MSI CR52-M 52/32/52 CDRW

Since the CDRW occupied most of the disc, we can see the CR52-A2 inching closer to its maximum thoroughput. The drive tops out at about 51x, and averages about 39x through the disc. CPU usage was low as well, so the drive shouldn't drag your system to a halt when reading data CDs.

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