Product Comparison: Samsung XP941 vs Samsung SM951

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General Specifications
About the Product
For maximum speed in a small package, look no further than the Samsung XP941 M.2 PCIe SSD. The 256GB model provides up to 1080MB/s read and 800MB/s write sequential data transfer rates, far exceeding the performance bottleneck of SATA-based SSDs.
The SM951 boasts outstanding performance, supporting both PCIe 3.0 and PCIe 2.0 interfaces. Samsung's SM951 comes in the M.2 form factor. The drive's compactness is well suited for most notebook PC designs, freeing up space for other components including the battery.
Key Specs
256 GB
256 GB
Read Speed
1080 Mb/s
2150 Mb/s
Write Speed
800 Mb/s
1200 Mb/s
What customers say about "Key Specs"
Samsung XP941 256GB M.2 Internal Solid State Drive
  • Wow! What can I say about this drive! It's fast, blazing fast!
  • This is the most amazing component in my system. Freaking thing is blazing fast.
  • Extremely fast. Amazing performance.
  • Super fast, and so far very reliable.
  • Installing updates and rebooting is very fast.
Samsung SM951 256GB Solid State Drive
  • Windows 7 finally installed was running at max speeds.
  • I was able to triple my read and write speeds compared to my SATA 2 drives.
  • Read and write speeds are just insane.
  • This one hits read speeds of 1,696+ mega bytes per second. Great write speeds, too.
  • Read and write speed both over 1000m/s.
Size & Weight
0.1 in.
0.14 in.
3.15 in.
3.14 in.
0.87 in.
0.86 in.
0.32 oz.
0.35 oz.
Form Factor
M.2 2280
M.2 2280
PCIe 2.0 x4
PCle 3.0 x4
Memory Chip Type
Encryption Algorithm
AES 256-bit
AES 256-bit
Support Standard AHCI driver, Support Toggle2.0 interface, End-to-End Data Protection, Trim Support
Native Command Queuing, Trim Support, End-to-End Data Protection, S.M.A.R.T. Support
What customers say about "Features"
Samsung XP941 256GB M.2 Internal Solid State Drive
  • Super fast boot M.2 drive. Easy to install.
  • Install was a breeze on my Aurora R7.
  • Installation was super smooth. Great performance.
Samsung SM951 256GB Solid State Drive
  • It installed Windows 10 in less than 10 minutes.
  • Finally gave up on Win 7, and installed the card in my 2012 Mc Pro tower. Easy.
  • Works fine in Mac Pro 3,1 early 2008 model!
  • Windows installed without a hitch or any special settings.
  • It is very hard to install Windows 10 on an M.2 PCIe SSD.
Warranty / Certifications
Manufacturer Warranty
1 year(s)
1 year(s)
Other Information

Other reviews