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Samsung PM951 NVMe 512 GB

The Samsung PM951 is a PCIe (NVMe) based solid state drive with a capacity of 512 GB. It is an M.2 22x80 type drive designed primarily with laptops in mind. As of Q1 2020, the SSD's perfomance roughly corresponds to the budget segment of modern solid state memory.

Notebookcheck says:

... The 512 GB NVMe Samsung PM951 SSD easily outperforms SATA III-based SSDs on older notebooks and even some newer ones that have yet to make the transition to the newer controller or have decided to cut back on the feature - Dell XPS 13 9350 Laptop Review | February 2016

TypeSSD
SizeM.2
Capacity512 GB
InterfaceNVMe
Announced01.11.2015

Benchmarks

AS SSD - Copy Game
min: 347.1     avg: 673     median: 769 (13%)     max: 805 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Copy Program
min: 211.9     avg: 281.9     median: 295.1 (11%)     max: 325.3 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Copy ISO
min: 339.5     avg: 806     median: 878.5 (8%)     max: 1127 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Score Total
min: 681     avg: 2165     median: 2410 (15%)     max: 3158 Points
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Score Write
min: 54     avg: 522     median: 669.5 (9%)     max: 694 Points
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Score Read
min: 441     avg: 1117     median: 1173 (19%)     max: 1679 Points
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Write *
min: 0.031     avg: 1.1     median: 0 (0%)     max: 4.123 ms
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Read *
min: 0.038     avg: 0     median: 0 (0%)     max: 0.058 ms
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Write
min: 38.56     avg: 393.9     median: 502.5 (9%)     max: 532 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Read
min: 288.9     avg: 938     median: 982.5 (19%)     max: 1497 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Write
min: 0.88     avg: 82.1     median: 105.5 (21%)     max: 116.5 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Read
min: 31.86     avg: 34.6     median: 34 (11%)     max: 38.29 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Write
min: 150.3     avg: 460.3     median: 560.5 (5%)     max: 570 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Read
min: 1184     avg: 1444     median: 1505.5 (12%)     max: 1579 MB/s
+ 4 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K QD32 Write
min: 225.4     avg: 303.7     median: 234.1 (22%)     max: 482.4 MB/s
+ 5 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K QD32 Read
min: 254.4     avg: 487.3     median: 542 (42%)     max: 610 MB/s
+ 5 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K Write
min: 104     avg: 129.8     median: 132.4 (4%)     max: 142.2 MB/s
+ 5 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 4K Read
min: 37.02     avg: 40.1     median: 41.4 (1%)     max: 42.59 MB/s
+ 5 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 512K Write
min: 176.6     avg: 443.6     median: 588 (7%)     max: 596 MB/s
+ 5 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - 512K Read
min: 428.7     avg: 584     median: 615 (13%)     max: 674 MB/s
+ 5 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - Sequential Write
min: 525     avg: 577     median: 590 (6%)     max: 594 MB/s
+ 5 benchmarks and specifications   + Show comparison chart
CrystalDiskMark 3.0 - Sequential Read
min: 984     avg: 1210     median: 1263 (16%)     max: 1291 MB/s
+ 5 benchmarks and specifications   + Show comparison chart
PCMark 8 - PCMark 8 Storage v2
min: 4895     avg: 4982     median: 5026 (98%)     max: 5026 Points
+ 3 benchmarks and specifications   + Show comparison chart
HD Tune Transfer Rate Minimum - HD Tune Transfer Rate Minimum
min: 111.1     avg: 413.1     median: 413.1 (21%)     max: 715 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
HD Tune Transfer Rate Average - HD Tune Transfer Rate Average
min: 889     avg: 971     median: 971 (41%)     max: 1053 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
HD Tune Transfer Rate Maximum - HD Tune Transfer Rate Maximum
min: 945     avg: 1059     median: 1058.5 (42%)     max: 1172 MB/s
+ 2 benchmarks and specifications   + Show comparison chart
- Range of benchmark values
red legend - Average benchmark values
* Smaller numbers mean a higher performance

Add one or more devices and compare

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v1.33
log 31. 09:12:09

#0 ran 1s before starting gpusingle class +0s ... 0s

#1 no ids found in url (should be separated by "_") +0s ... 0s

#2 not redirecting to Ajax server +0s ... 0s

#3 did not recreate cache, as it is less than 5 days old! Created at Sat, 26 Jul 2025 20:41:40 +0200 +0.004s ... 0.004s

#4 composed specs +0.009s ... 0.014s

#5 did output specs +0s ... 0.014s

#6 getting avg benchmarks for device 758 +0.005s ... 0.018s

#7 got single benchmarks 758 +0.031s ... 0.049s

#8 got avg benchmarks for devices +0s ... 0.049s

#9 min, max, avg, median took s +2.117s ... 2.167s

#10 return log +0.003s ... 2.169s

Notebook reviews with Samsung PM951 NVMe 512 GB

Dell XPS 12 9250 4K Convertible Review

Dell XPS 12 9250 4K Convertible Review

4K for on the go. Dell wants to advance the convertible sector by setting new standards with the new 2-in-1 XPS 12 9259. A 4K panel, 512 GB SSD and Core m7 are ...
Intel Core m7-6Y75 | Intel HD Graphics 515 | 12.50" | 1.3 kg
Dell XPS 13 9350 (i7-6560U, QHD+) Ultrabook Review

Dell XPS 13 9350 (i7-6560U, QHD+) Ultrabook Review

Maxed out. Our latest XPS 13 is equipped to the brim with a 3200x1800 resolution touchscreen, Core i7-6560U CPU, Iris Graphics 540, and a 512 GB NVMe SSD. Is th...
Intel Core i7-6560U | Intel Iris Graphics 540 | 13.30" | 1.3 kg
Alienware 17 R3 Notebook Review

Alienware 17 R3 Notebook Review

Marathon runner. There are many powerful gaming notebooks, but only a few provide long battery runtimes. The third revision of the Alienware 17 turns out to be...
Intel Core i7-6700HQ | NVIDIA GeForce GTX 980M | 17.30" | 3.7 kg
Dell XPS 15 9550 (Core i7, FHD) Notebook Review

Dell XPS 15 9550 (Core i7, FHD) Notebook Review

Finally on its feet. After a series of software issues, we decided to check up once again on a different SKU of the XPS 15 to see if those problematic areas hav...
Intel Core i7-6700HQ | NVIDIA GeForce GTX 960M | 15.60" | 2 kg
Dell XPS 15 9550 (i7, 512GB, UHD) InfinityEdge Notebook Review

Dell XPS 15 9550 (i7, 512GB, UHD) InfinityEdge Notebook Review

Bug fixes, workarounds and BIOS updates: Dell's XPS 15 does not have a good start. How is the bigger i7/UHD version handling the drawbacks that we experienced w...
Intel Core i7-6700HQ | NVIDIA GeForce GTX 960M | 15.60" | 2.1 kg

Alienware 17 R3 (A17-9935): Intel Core i7-6700HQ NVIDIA GeForce GTX 980M, 17.30", 3.7 kg
  External Review » Alienware 17 R3 (A17-9935)

Dell XPS 15 9550 i7 FHD: Intel Core i7-6700HQ NVIDIA GeForce GTX 960M, 15.60", 2 kg
  External Review » Dell XPS 15 9550 i7 FHD

Dell XPS 12 9250 4K: Intel Core m7-6Y75 Intel HD Graphics 515, 12.50", 1.3 kg
  External Review » Dell XPS 12 9250 4K

Dell XPS 13 9350 WQXGA: Intel Core i7-6560U Intel Iris Graphics 540, 13.30", 1.3 kg
  External Review » Dell XPS 13 9350 WQXGA

Dell XPS 15-9550 i7: Intel Core i7-6700HQ NVIDIA GeForce GTX 960M, 15.60", 2.1 kg
  External Review » Dell XPS 15-9550, Core i7

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