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Samsung PM961 MZVLW256HEHP

Samsung PM961 MZVLW256HEHP Samsung PM961

The 256 GB Samsung PM961 also known as MZVLW256HEHP is a M.2 22x80 size NVMe SSD. We first tested the drive in 2017. In October 2019, MZVLW256HEHP was marked as EOL on Samsung's website. The product page is down as of November 2020.

A rebrand of Samsung 960 EVO series, the PM961 was designed by Samsung with OEMs in mind.

Performance

Samsung's very own Polaris contoller combined with four PCIe 3.0 lanes allow for a theoretical transfer rate of up to 3938 MB/s. According to Samsung the sequential read rate could be as high as 2800 MB/s with writes approaching 1100 MB/s. While these were not achieved in our independent testing with CrystalDiskMark 3, the PM961 is still a very good SSD. It will easily handle the vast majority of tasks including content creation.

Here's our opinion on the product:

.... performs about the same as the 512 GB version - Samsung Notebook 9 Review from 2017

.... transfer speeds are significantly faster than they would be with a SATA interface - Lenovo Legion Y720 Laptop Review from 2017

TypeSSD
SizeM.2
Capacity256 GB
Interface

Benchmarks

AS SSD - Copy Game
min: 225.14     avg: 537     median: 451.9 (8%)     max: 1114.88 MB/s
AS SSD - Copy Program
min: 75.03     avg: 343     median: 291 (11%)     max: 780.01 MB/s
AS SSD - Copy ISO
min: 420.49     avg: 1004     median: 800.3 (22%)     max: 1912.43 MB/s
AS SSD - Score Total
min: 35     avg: 2565     median: 2575 (35%)     max: 4653 Points
AS SSD - Score Write
min: 48     avg: 587     median: 620 (17%)     max: 1029 Points
AS SSD - Score Read
min: 363     avg: 1378     median: 1363 (48%)     max: 2545 Points
AS SSD - Access Time Write *
min: 0.023     avg: 0.5     median: 0 (0%)     max: 4.15 ms
AS SSD - Access Time Read *
min: 0.04     avg: 0.1     median: 0.1 (0%)     max: 0.49 ms
AS SSD - 4K-64 Write
min: 15.3     avg: 419     median: 391.3 (13%)     max: 1651.81 MB/s
AS SSD - 4K-64 Read
min: 199.38     avg: 1112     median: 1084.6 (46%)     max: 2279.57 MB/s
AS SSD - 4K Write
min: 1.16     avg: 91.6     median: 108 (1%)     max: 161.43 MB/s
AS SSD - 4K Read
min: 20.72     avg: 45.1     median: 46.9 (18%)     max: 54.06 MB/s
AS SSD - Sequential Write
min: 223.08     avg: 960     median: 1138.9 (27%)     max: 1395 MB/s
AS SSD - Sequential Read
min: 768.44     avg: 2019     median: 2062.1 (42%)     max: 2834 MB/s
CrystalDiskMark 3.0 - 4K QD32 Write
min: 94.87     avg: 384     median: 404.5 (53%)     max: 621.4 MB/s
CrystalDiskMark 3.0 - 4K QD32 Read
min: 131.5     avg: 419     median: 426.1 (45%)     max: 650.4 MB/s
CrystalDiskMark 3.0 - 4K Write
min: 46.63     avg: 127     median: 138.9 (16%)     max: 176.9 MB/s
CrystalDiskMark 3.0 - 4K Read
min: 29.75     avg: 53     median: 55.8 (1%)     max: 62.63 MB/s
CrystalDiskMark 3.0 - 512K Write
min: 337.86     avg: 781     median: 820.9 (19%)     max: 890.1 MB/s
CrystalDiskMark 3.0 - 512K Read
min: 406     avg: 887     median: 855.9 (36%)     max: 1295 MB/s
CrystalDiskMark 3.0 - Sequential Write
min: 341.2     avg: 1136     median: 1205 (28%)     max: 1423.2 MB/s
CrystalDiskMark 3.0 - Sequential Read
min: 800     avg: 1627     median: 1631.5 (47%)     max: 2196 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K
min: 72.17     avg: 128     median: 132.4 (12%)     max: 195.1 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K
min: 22.23     avg: 42.4     median: 42.7 (1%)     max: 53.38 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5 Write Seq
min: 343.33     avg: 1099     median: 1167 (27%)     max: 1411.91 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5 Read Seq
min: 746.2     avg: 1373     median: 1371 (25%)     max: 2000 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write 4K Q32T1
min: 101     avg: 398     median: 399.2 (23%)     max: 747.3 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Read 4K Q32T1
min: 133.9     avg: 403     median: 413.9 (26%)     max: 632.7 MB/s
CrystalDiskMark 5.2 / 6 - CDM 5/6 Write Seq Q32T1
min: 344.3     avg: 1210     median: 1226 (28%)     max: 1429.4 MB/s