Samsung SM951 512GB M.2 PCIe SSD Review


Samsung SM951 M.2 PCIe SSD Test System

Before we look at the numbers, lets take a brief look at the test system that was used. All testing was done on a fresh install of Windows 8.1 Pro 64-bit and benchmarks were completed on the desktop with no other software programs running. This means windows defender, windows update, disk fragmentation and everything else that would interfere with testing was disabled. Windows 8.1 also had the power option set to high performance. We also disabled Turbo mode on the Intel Core i7-5960X to ensure our numbers are spot on and repeatable.

ASUS X99 Sabertooth Motherboard

The Intel X99 platform that we used to test the M.2 PCIe SSD was based around the ASUSX99 Sabertooth motherboard with BIOS 1702 that came out on 04/15/2015. We used Intel RST storage drivers, the exact version was The Crucial Ballistix DDR4 32GB 2400MHz memory kit was run at 2666MHz with 15-15-15-28 1T memory timings. The Corsair Neutron XT 240GB SSD was used as the primary drive.

SM951 Testing

We tested with the Samsung SM951 M.2 PCIe SSD in the ASUS Hyper M.2 x4 HHHL adapter. We inserted that adapter into the secondary PCI Express Gen 3.0 x16 slot. The SSD was activated in disk management with a drive letter and we performed a quick format with all the default settings.

Intel X99 Test Bench

Intel LGA 2011v3 Test Platform
Component Brand/Model Live Pricing


Core i7 5960X


ASUSX99 Sabertooth


Crucial Ballistix 2400MHz 32GB

OS Drive

Corsair Neutron XT 240GB

Power Supply

Corsair AX860i

Operating System

Windows 8.1 Pro 64-Bit

CrystalDiskInfo 6.3.2 Readout:


For the Samsung SM951 512GB M.2 PCIe SSD, the readout on CrystalDiskInfo 6.3.2 shows that NCQ, S.M.A.R.T. and TRIM are enabled. The firmware version that we are running at the time of testing was BXW2500Q.


Let’s have a look at the performance!