Samsung SM951 (512GB) PCIe SSD Reviewby Kristian Vättö on February 24, 2015 8:00 AM EST
ATTO - Transfer Size vs Performance
I'm keeping our ATTO test around because it's a tool that can easily be run by anyone and it provides a quick look into performance scaling across multiple transfer sizes. I'm providing the results in a slightly different format because the line graphs didn't work well with multiple drives and creating the graphs was rather painful since the results had to be manually inserted cell be cell as ATTO doesn't provide a 'save as CSV' functionality.
The SM951 does much better at all IO sizes than the XP941 and especially read performance scales much better.
AS-SSD Incompressible Sequential Performance
I'm also keeping AS-SSD around as it's freeware like ATTO and can be used by our readers to confirm that their drives operate properly. AS-SSD uses incompressible data for all of its transfers, so it's also a valuable tool when testing SandForce based drives that perform worse with incompressible data.
Our sequential Iometer tests already showed that the SM951 is fast and AS-SSD provides further proof that the drive can easily reach ~1500MB/s.