diglloyd Mac Performance Guide

Max Your Mac Pro at OWC

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New vs Seasoned OWC Mercury Pro 240GB

Last updated May 27, 2010 - Send Feedback

The OWC Mercury Pro has 7% over-provisioning, which means that 7% of its flash memory is set aside for error correction, bad blocks, and performance enhancements.

Its RAID-0-ready sibling, the Mercury Pro RE has 28% over-provisioning (200GB capacity). Both variants are outstanding choices. Choose the 240GB Pro model for single-drive use, or the 200GB model for ultra-high performance RAID-0 use.

As of April 2010, the OWC Mercury Extreme (either model) are the only SSDs that I feel confident recommending. Either the Pro or the Pro RE models are great choice for the MPG Pro Workstation or MPG Pro Laptop, depending on workload and/or whether RAID-0 striping is used.

Performance brand-new and after seasoning

The OWC Mercury Extreme graph below looks like only one write/read test was done because the results are all but identical when new and when seasoned.

In the graph below, reads are green and writes are red. This is a flawless performance! Click for a larger graph.

Real world performance of solid state drives SSD
Average speed across the volume

The Speed You Need

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