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Samsung SM951 PCIe M.2 512GB SSD Review

Samsung introduced the SM951 last July during its annual SSD Global Summit in South Korea. Today we're running the drive through our benchmark suite to see if it lives up to the hype.

PCMark 8 Real-World Software Performance

This is our first set of tests with real software traces, which will show us the small differences between SSDs in the wild, outside of contrived benchmarks. The greatest performance increase you'll see from a single component comes from swapping out mechanical storage in favor of an SSD. As long as your drive of choice is reliable, the difference between one SSD and another is fairly small under normal consumer workloads.

Service Times

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Samsung's SM951 512GB shaves time off of most tests compared to existing PCIe-based M.2 SSDs. Still, the differences are small when we break them down into individual tasks.


A second here, a second there; it all adds up. The throughput rating comes from the tests above, showing the SM951's significant performance increase.

Chris Ramseyer
Chris Ramseyer is a Contributing Editor for Tom's Hardware US. He tests and reviews consumer storage.