84points

Samsung 990 Pro 1TB

82points

Western Digital WD Black SN850X 1TB

vs
vs

26 facts in comparison

Samsung 990 Pro 1TB vs Western Digital WD Black SN850X 1TB

Samsung 990 Pro 1TB
Western Digital WD Black SN850X 1TB

Why is Samsung 990 Pro 1TB better than Western Digital WD Black SN850X 1TB?

  • 400000IOPS faster random read speed
    ?

    1200000IOPSvs800000IOPS
  • 600MB/s faster sequential write speed
    ?

    6900MB/svs6300MB/s
  • 450000IOPS faster random write speed
    ?

    1550000IOPSvs1100000IOPS
  • 256 more bits of encryption supported
    ?

    256vs0

Why is Western Digital WD Black SN850X 1TB better than Samsung 990 Pro 1TB?

  • 0.25million hours longer MTBF
    ?

    1.75million hoursvs1.5million hours
  • 12.5% more controller channels
    ?

    9vs8
  • 1158MB/s faster sequential read (UserBenchmark)
    ?

    3670MB/svs2512MB/s

Price comparison

Samsung 990 Pro 1TB

ProductStorePrice
Samsung 990 Pro 1TB ebay-usedSamsung - 990 PRO 1TB Internal SSD PCle ...Samsung - 990 PRO 1TB Internal SSD PCle Gen 4x4 NVMe
ebay-used logo
$70
Samsung 990 Pro 1TB ebay-usedSAMSUNG 990 PRO 1TB 2TB M.2 2280 PCIe 4....SAMSUNG 990 PRO 1TB 2TB M.2 2280 PCIe 4.0 x4 NVMe MZ-V9P1T0BW MZ-V9P2T0BW
ebay-used logo
$108
Samsung 990 Pro 1TB ebay-usedSAMSUNG 990 PRO M.2 2280 1TB PCIe Gen 4....SAMSUNG 990 PRO M.2 2280 1TB PCIe Gen 4.0 x4 NVMe 2.0 V7 V-NAND 3bit MLC SSD
ebay-used logo
$112
Samsung 990 Pro 1TB ebay-usedSAMSUNG 990 PRO M.2 2280 1TB PCIe Gen 4....SAMSUNG 990 PRO M.2 2280 1TB PCIe Gen 4.0 x4, NVMe 2.0 V7 V-NAND 3bit MLC Intern
ebay-used logo
$102

Western Digital WD Black SN850X 1TB

Buy used:

$70

ProductStorePrice
Western Digital WD Black SN850X 1TB amazonWD_BLACK 1TB SN850X NVMe Internal Gaming...WD_BLACK 1TB SN850X NVMe Internal Gaming SSD Solid State Drive - Gen4 PCIe, M.2 2280, Up to 7,300 MB/s - WDS100T2X0E
amazon logo
$72
Western Digital WD Black SN850X 1TB ebay-newWD_BLACK 1TB SN850X NVMe Internal Gaming...WD_BLACK 1TB SN850X NVMe Internal Gaming SSD Solid State Drive - Gen4 PCIe, M...
ebay-new logo
$93
Western Digital WD Black SN850X 1TB ebay-newWD_BLACK SN850X NVMe M.2 2280 1TB PCI-Ex...WD_BLACK SN850X NVMe M.2 2280 1TB PCI-Express 4.0 x4 Internal Solid State Drive
ebay-new logo
$75
Western Digital WD Black SN850X 1TB ebay-newWD_BLACK 1TB SN850X NVMe Internal Gaming...WD_BLACK 1TB SN850X NVMe Internal Gaming SSD Solid State Drive - Gen4 PCIe, M...
ebay-new logo
$64
Western Digital WD Black SN850X 1TB ebay-newWD_BLACK 1TB SN850X NVMe Internal Gaming...WD_BLACK 1TB SN850X NVMe Internal Gaming SSD Solid State Drive - Gen4 PCIe, M...
ebay-new logo
$118

Cheap alternatives

User reviews

Overall rating

Samsung 990 Pro 1TB
10.0
1 User reviews
Samsung 990 Pro 1TB
10.0/10
1 User reviews
Western Digital WD Black SN850X 1TB
0.0
0 User reviews
Western Digital WD Black SN850X 1TB
0.0/10
0 User reviews

Features

Value for money

10.0/10
1 votes
No reviews yet
 

Gaming

10.0/10
1 votes
No reviews yet
 

Performance

10.0/10
1 votes
No reviews yet
 

Speeds

10.0/10
1 votes
No reviews yet
 

Reliability

10.0/10
1 votes
No reviews yet
 

Comments

GOLDDUBBY

GOLDDUBBY

1 month ago

10 / 10

Back on the Throne!

GOLDDUBBY

GOLDDUBBY

1 month ago

10 / 10

After the latest firmware upgrade, the samsung 990 pro is back on the throne as the best mvme 4.0 on the market.

Pros

  • Fastest

Cons

  • Not cheap
0 users found this helpful

Read speed

sequential read speed

7450MB/s

7300MB/s

This is the maximum sequential read speed according to the manufacturer. High sequential read speeds are most useful when the system is reading very large files (such as videos) from the SSD.
random read speed

1200000IOPS

800000IOPS

This is the maximum random read speed according to the manufacturer. It is measured in IOPS (Input/Output Operations Per Second) and is a good indication of the read performance of the SSD in day-to-day usage.

Write speed

sequential write speed

6900MB/s

6300MB/s

This is the maximum sequential write speed according to the manufacturer. High sequential write speeds are most useful when the system is writing very large files (such as videos) to the SSD.
random write speed

1550000IOPS

1100000IOPS

This is the maximum random write speed according to the manufacturer. It is measured in IOPS (Input/Output Operations Per Second) and is a good indication of the write performance of the SSD in day-to-day usage.

Benchmarks

The sequential write speed benchmark gives an indication of the SSD performance when writing large files. The value given here is the average result calculated from user-submitted scores. Source: UserBenchmark.
The sequential read speed benchmark gives an indication of the SSD performance when reading large files. The value given here is the average result calculated from user-submitted scores. Source: UserBenchmark.
random write speed (UserBenchmark)

Unknown. Help us by suggesting a value. (Samsung 990 Pro 1TB)

Unknown. Help us by suggesting a value. (Western Digital WD Black SN850X 1TB)

The random write speed benchmark gives an indication of the everyday performance of the SSD. The value given here is the average result calculated from user-submitted scores. Source: UserBenchmark.
random read speed (UserBenchmark)

Unknown. Help us by suggesting a value. (Samsung 990 Pro 1TB)

Unknown. Help us by suggesting a value. (Western Digital WD Black SN850X 1TB)

The random read speed benchmark gives an indication of the everyday performance of the SSD. The value given here is the average result calculated from user-submitted scores. Source: UserBenchmark.
PassMark result

47174

47701

The PassMark benchmark measures the overall performance of the SSD based on read speeds, write speeds, and seek times. The value given is an average based on user-submitted results.

General info

type

M2

M2

The type of SSD.
SSD cache

DRAM cache

DRAM cache

SSDs with a DRAM cache utilise high-speed RAM as a cache. This results in higher performance than DRAM-less SSDs, which use a slower NAND cache or the system’s RAM (HMB).
Is an NVMe SSD
Samsung 990 Pro 1TB
Western Digital WD Black SN850X 1TB
NVMe SSDs use the PCIe interface, which has a higher bandwidth than the SATA interface. This results in much faster read/write speeds compared to SSDs which use the SATA interface.
internal storage

1000GB

1000GB

The internal storage refers to the built-in storage space available in a device for system data, apps, and user-generated data. With a large amount of internal storage, you can save more files and apps on your device.
The storage type determines how many bits of data are written to each memory cell. These storage types include SLC (one bit per cell), MLC (two bits per cell), and TLC (three bits per cell). The less bits that are written to each cell, the greater the speed and reliability.
Peripheral Component Interconnect Express (PCIe) is a high-speed interface standard for connecting components, such as graphics cards and SSDs, to a motherboard. Newer versions can support more bandwidth and deliver better performance.
The controller is a processor that manages the functions of the SSD. The number of channels refers to the number of storage chips that this controller can access at once. Typically speaking, the more channels that the SSD controller has, the greater the performance.
Terabytes Written (TBW) is a measurement of the SSD's endurance, and often refers to the manufacturer's warranty. A higher TBW can be an indication of greater reliability over time.
MTBF

1.5million hours

1.75million hours

MTBF (Mean Time Between Failures) is the manufacturer’s estimation of the average time for a device to fail.

Miscellaneous

M.2 form factor
Samsung 990 Pro 1TB
Western Digital WD Black SN850X 1TB
M.2 SSDs slot directly into the motherboard. Compared to 2.5" SSDs, they are much easier to install and don't require the user to connect and route data and power cables.

Which are the best SSDs?

Show all
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