Samsung

PM851 2.5 7mm 128GB

PM851 2.5 7mm 128GB
BENCHMARKS (3,901)
MKT (0%)
BUILDS
(0)

Effective Speed -70%Effective Speed -70%Average Score -140%Read -9%, Write -305%, 4K Read -49%, 4K Write -65%, Mixed -197%, 4K Mixed -132%, SusWrite -221%Peak Score -113%Read -4%, Write -249%, 4K Read -40%, 4K Write -26%, Mixed -160%, 4K Mixed -126%, SusWrite -187%Value & Sentiment -851%User Rating -14%, Market Share -1,689%Nice To Haves -151%DQ Read -1%, DQ Write -154%, DQ Mixed -410%, ADQ Read -4%, ADQ Write -201%, ADQ Mixed -385%, Age -18%, AS-SSD Total -36%

Average Bench: 57.9% (822^nd of 1072)

Based on 3,901 user benchmarks. Model: SAMSUNG SSD PM851 2.5 7mm 128GB

Poor: 40%Average: 57.9% Great: 76%

Popular builds with this SSD

Average average bench

The Samsung PM851 2.5 7mm 128GB averaged 42.0% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.

Strengths

Avg. 4K-64Thread Read Speed 315MB/s

Avg. 4K Random Read Speed 23.1MB/s

See where your SSD ranks →

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 2.5 7mm 128GB is 36.4%. This is a relatively wide range which indicates that the Samsung PM851 2.5 7mm 128GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 92.4MB/s

Avg. Sequential Write Speed 100MB/s

Average Bench

(Based on 3,901 samples)

Rank 82257.9%

Min	Avg	Max
318	Read 420	488
29	Write 100	139
51.2	Mixed 121	163
25	SusWrite 92.4	135
39.9% 183 MB/s

Min	Avg	Max
13.3	4K Read 23.1	30.8
23.4	4K Write 53.1	97
11.6	4K Mixed 19.4	25.8
88% 31.9 MB/s

Min	Avg	Max
139	DQ Read 315	364
28.3	DQ Write 96.1	141
27.4	DQ Mixed 53.6	65
79.2% 155 MB/s

User Benchmarks

Bench

Sequential

Random 4k

Deep queue 4k

The fastest SSD (mainstream) averages a speed of 100%

ZAF-User, 14 days ago.

12GB free (System drive)

Firmware: EXT08D0Q

SusWrite @10s intervals: 99 85 75 89 84 77 MB/s

69.3% Good

Write 109

Mixed 136

SusWrite 85

45% 205 MB/s

4K Read 27.1

4K Write 76.7

4K Mixed 25

114% 42.9 MB/s

DQ Read 359

DQ Write 105

DQ Mixed 61.5

90% 175 MB/s

DZA-User, 17 days ago.

77GB free (System drive)

Firmware: EXT08D0Q

SusWrite @10s intervals: 116 114 106 104 98 106 MB/s

65.3% Good

Write 115

Mixed 137

SusWrite 107

45% 205 MB/s

4K Read 24.9

4K Write 61.3

4K Mixed 22.6

99% 36.3 MB/s

DQ Read 353

DQ Write 120

DQ Mixed 62.6

92% 178 MB/s

IDN-User, 9 days ago.

49GB free (System drive)

Firmware: 8D0Q

SusWrite @10s intervals: 110 100 93 94 88 90 MB/s

63.5% Good

Write 117

Mixed 139

SusWrite 95.9

43% 199 MB/s

4K Read 23.9

4K Write 68.7

4K Mixed 20.7

99% 37.8 MB/s

DQ Read 354

DQ Write 112

DQ Mixed 62.5

91% 176 MB/s

USA-User, 12 days ago.

48GB free

Firmware: EXT08D0Q

SusWrite @10s intervals: 134 133 133 133 133 132 MB/s

59.6% Above average

Write 137

Mixed 160

SusWrite 133

47% 215 MB/s

4K Read 18.9

4K Write 43.8

4K Mixed 19.7

77% 27.5 MB/s

DQ Read 345

DQ Write 141

DQ Mixed 61.7

94% 182 MB/s

ZAF-User, 1 day ago.

41GB free (System drive)

Firmware: EXT08D0Q

SusWrite @10s intervals: 36 45 49 46 69 65 MB/s

57.1% Above average

Write 37.1

Mixed 45.3

SusWrite 51.5

37% 176 MB/s

4K Read 24.1

4K Write 22.8

4K Mixed 19.6

74% 22.2 MB/s

DQ Read 362

DQ Write 24.7

DQ Mixed 40.3

68% 142 MB/s

PAK-User, 2 days ago.

35GB free (System drive)

Firmware: EXT07D0Q

SusWrite @10s intervals: 73 71 53 40 38 36 MB/s

54% Above average

Write 81.9

Mixed 73.6

SusWrite 51.9

34% 156 MB/s

4K Read 25

4K Write 35.5

4K Mixed 20.1

82% 26.9 MB/s

DQ Read 351

DQ Write 62.3

DQ Mixed 58.5

81% 157 MB/s

AUS-User, 14 hrs ago.

92GB free (System drive)

Firmware: EXT07D0Q

SusWrite @10s intervals: 35 25 24 21 25 23 MB/s

50.9% Above average

Write 78.8

Mixed 92.5

SusWrite 25.3

35% 162 MB/s

4K Read 23.7

4K Write 39.4

4K Mixed 17.4

79% 26.8 MB/s

DQ Read 249

DQ Write 96.7

DQ Mixed 51

70% 132 MB/s

3,901 MORE »

Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,711,762 SSDs tested

Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU

GPU

SSD

HDD

RAM

MBD

Typical PM851 2.5 7mm 128GB Builds (Compare 1,503 builds) See popular component choices, score breakdowns and rankings

Gaming 82%

Aircraft carrier

Desktop 81%

Aircraft carrier

Workstation 72%

Battleship

System: Alienware Area-51 R2

CPU
Core i7-5820KIntel $130Bench 77%, 101,694 samples	807x
Core i7-6800KIntel $103Bench 81%, 50,196 samples	249x
Core i7-5930KIntel $70Bench 80%, 34,039 samples	198x

GPU
GTX 1080Nvidia $400Bench 102%, 1,082,454 samples	224x
GTX 980Nvidia $500Bench 59%, 167,107 samples	173x
GTX 1070Nvidia $132Bench 80%, 1,459,281 samples	112x

SSD
PM851 2.5 7mm 128GBSamsungBench 58%, 3,901 samples	73x

RAM
HMA41GU6AFR8N-TF 4x8GBHynixBench 83%, 2,656 samples	134x
HMA451U6AFR8N-TF 4x4GBHynixBench 84%, 1,850 samples	130x
M378A5143DB0-CPB 4x4GBSamsungBench 88%, 1,582 samples	130x

EDIT WITH CUSTOM PC BUILDER

Value: 69% - Good

Total price: $530

Popular PM851 2.5 7mm 128GB systems:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

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How it works

- Download and run UserBenchmark
- CPU tests include: integer, floating and string
- GPU tests include: six 3D game simulations
- Drive tests include: read, write, sustained write and mixed IO
- RAM tests include: single/multi core bandwidth and latency
- SkillBench (space shooter) tests user input accuracy
- Reports are generated and presented on userbenchmark.com
- Identify the strongest components in your PC
- See speed test results from other users
- Compare your components to the current market leaders
- Explore your best upgrade options with a virtual PC build
- Compare your in-game FPS to other users with your hardware

Solid State Drive Rankings (Price vs Performance) April 2024 SSD Rankings

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. ^[SSDrivePro]

Group Test Results

Best user rated - User sentiment trumps benchmarks for this comparison.
Best value for money - Value for money is based on real world performance.
Fastest real world speed - Real World Speed measures performance for typical consumers.

1072 Drives (Compared) Thousands of user benchmarks compiled into one comparison list

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

Frequently Asked Questions

Storage Devices FAQ

What is sustained sequential write speed?

What’s the difference between SLC, MLC and TLC?

What is 3D XPoint and how fast is it?

What’s the difference between SATA, PCIe and NVMe?

What’s the difference between NAND and V-NAND?

What is sequential write speed?

What is sequential read speed?

What is incompressible data?

What is queue depth?

Solid State Drives

What is the SSD value for money rating?

What is 4K 64 thread write speed?

Can CPU power saving states (C1,C2,C3) impact SSD speed?

What is the effective SSD speed index?

How is the AS SSD write score calculated?

How is the AS SSD read score calculated?

How is the AS SSD total score calculated?

ALL FAQs »

CPU	GPU	SSD
Intel Core i5-13600K $273	Nvidia RTX 4060 $300	Crucial MX500 250GB $40
Intel Core i5-12400F $133	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $177	Nvidia RTX 4070 $539	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $39	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43	SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51	G.SKILL Trident Z DDR4 3200 C14 4x16GB $351	SanDisk Ultra Fit 32GB $16

Samsung

PM851 2.5 7mm 128GB

Average Bench: 57.9% (822^nd of 1072)

Popular builds with this SSD

Average average bench

Strengths

Above average consistency

Weaknesses

Average Bench

Market Share (See Leaders)

CHOOSE A COMPONENT:

System: Alienware Area-51 R2

Popular PM851 2.5 7mm 128GB systems:

UserBenchmark of the month

How it works

Group Test Results

Comments

Speed Comparisons

Frequently Asked Questions

Best User Rated

Samsung

PM851 2.5 7mm 128GB

Average Bench: 57.9% (822nd of 1072)

Popular builds with this SSD

Average average bench

Strengths

Above average consistency

Weaknesses

Average Bench

Market Share (See Leaders)

CHOOSE A COMPONENT:

System: Alienware Area-51 R2

Popular PM851 2.5 7mm 128GB systems:

UserBenchmark of the month

How it works

Group Test Results

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Comments

Speed Comparisons

Frequently Asked Questions

Best User Rated

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Average Bench: 57.9% (822^nd of 1072)