Samsung

PM851 mSATA 1TB

PM851 mSATA 1TB
BENCHMARKS (31)
MKT (%)
BUILDS
(0)

Effective Speed -37%Effective Speed -37%Average Score -49%Read -1%, Write -49%, 4K Read -30%, 4K Write -78%, Mixed -42%, 4K Mixed -123%, SusWrite -23%Peak Score -28%Read 2%, Write -39%, 4K Read -15%, 4K Write -51%, Mixed -14%, 4K Mixed -65%, SusWrite -13%Value & Sentiment -14%User Rating -14%Nice To Haves -102%DQ Read 1%, DQ Write -63%, DQ Mixed -246%, ADQ Read -22%, ADQ Write -84%, ADQ Mixed -376%, Age -7%, AS-SSD Total -19%

Average Bench: 71.6% (637^th of 1072)

Based on 31 user benchmarks. Model: SAMSUNG SSD PM851 mSATA

Poor: 56%Average: 71.6% Great: 86%

Popular builds with this SSD

Good average bench

The Samsung PM851 mSATA 1TB averaged 28.3% 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 Random Read Speed 26.5MB/s

Avg. 4K-64Thread Read Speed 268MB/s

See where your SSD ranks →

Good consistency

The range of scores (95th - 5th percentile) for the Samsung PM851 mSATA 1TB is 29.8%. This is a relatively narrow range which indicates that the Samsung PM851 mSATA 1TB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 241MB/s

Avg. Sequential Mixed IO Speed 252MB/s

Average Bench

(Based on 31 samples)

Rank 63771.6%

Min	Avg	Max
84.4	Read 453	518
75.4	Write 272	350
91.3	Mixed 252	371
72.1	SusWrite 241	343
67.9% 305 MB/s

Min	Avg	Max
9.1	4K Read 26.5	37.4
17.4	4K Write 49.1	81.2
12.4	4K Mixed 20.2	35.4
92% 31.9 MB/s

Min	Avg	Max
23.2	DQ Read 268	372
37.6	DQ Write 157	220
16.2	DQ Mixed 54.7	95.8
83.1% 160 MB/s

User Benchmarks

Bench

Sequential

Random 4k

Deep queue 4k

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

POL-User, 3 years ago.

839GB free (System drive)

Firmware: EXT4

SusWrite @10s intervals: 329 329 338 344 340 346 MB/s

83.2% Excellent

Write 350

Mixed 192

SusWrite 338

75% 338 MB/s

4K Read 27.4

4K Write 47

4K Mixed 26.4

100% 33.6 MB/s

DQ Read 369

DQ Write 220

DQ Mixed 93.3

124% 227 MB/s

POL-User, 2 years ago.

316GB free (System drive)

Firmware: EXT49D1Q

SusWrite @10s intervals: 154 186 228 242 241 250 MB/s

74.9% Very good

Write 108

Mixed 122

SusWrite 217

50% 226 MB/s

4K Read 26.5

4K Write 49.7

4K Mixed 29.7

104% 35.3 MB/s

DQ Read 371

DQ Write 122

DQ Mixed 84.7

105% 193 MB/s

AUS-User, 3 years ago.

333GB free

Firmware: EXT4

SusWrite @10s intervals: 136 137 164 173 183 182 MB/s

62.6% Good

Write 235

Mixed 168

SusWrite 162

50% 226 MB/s

4K Read 29.6

4K Write 47.5

4K Mixed 29.4

108% 35.5 MB/s

DQ Read 137

DQ Write 129

DQ Mixed 74.1

72% 113 MB/s

USA-User, 4 years ago.

310GB free (System drive)

Firmware: EXT4

SusWrite @10s intervals: 98 74 64 68 55 74 MB/s

54.4% Above average

Write 188

Mixed 144

SusWrite 72.1

42% 191 MB/s

4K Read 23.6

4K Write 39.7

4K Mixed 20.5

83% 27.9 MB/s

DQ Read 365

DQ Write 102

DQ Mixed 76.6

97% 181 MB/s

31 MORE »

Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,812,247 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 mSATA 1TB Builds (Compare 1,813 builds) See popular component choices, score breakdowns and rankings

Gaming 8%

Tree trunk

Desktop 58%

Gunboat

Workstation 7%

Tree trunk

System: Dell Precision M6800

CPU
Core i7-4810MQIntel $400Bench 62%, 26,927 samples	545x
Core i7-4800MQIntel $150Bench 63%, 22,632 samples	408x
Core i7-4910MQIntel $110Bench 67%, 6,703 samples	214x

GPU
HD 4600 (Mobile 1.15 GHz)IntelBench 3%, 258,091 samples	1,019x
Quadro K3100MNvidiaBench 11%, 2,978 samples	341x
Quadro K4100MNvidiaBench 16%, 1,157 samples	192x

SSD
PM851 mSATA 1TBSamsungBench 72%, 31 samples	1x

RAM
HMT41GS6BFR8A-PB 4x8GBHynixBench 54%, 1,944 samples	85x
HMT41GS6BFR8A-PB 2x8GBHynixBench 52%, 34,976 samples	82x
M471B1G73DB0-YK0 4x8GBSamsungBench 54%, 2,172 samples	51x

EDIT WITH CUSTOM PC BUILDER

Value: 56% - Above average

Total price: $400

Popular PM851 mSATA 1TB 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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- 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
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Solid State Drive Rankings (Price vs Performance) May 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 $254	Nvidia RTX 4060 $300	Crucial MX500 250GB $39
Intel Core i5-12400F $133	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $163	Nvidia RTX 4070 $539	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $39	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $31	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $37	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 mSATA 1TB

Average Bench: 71.6% (637^th of 1072)

Popular builds with this SSD

Good average bench

Strengths

Good consistency

Weaknesses

Average Bench

Market Share (See Leaders)

CHOOSE A COMPONENT:

System: Dell Precision M6800

Popular PM851 mSATA 1TB systems:

UserBenchmark of the month

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Group Test Results

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Speed Comparisons

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Best User Rated

Samsung

PM851 mSATA 1TB

Average Bench: 71.6% (637th of 1072)

Popular builds with this SSD

Good average bench

Strengths

Good consistency

Weaknesses

Average Bench

Market Share (See Leaders)

CHOOSE A COMPONENT:

System: Dell Precision M6800

Popular PM851 mSATA 1TB 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: 71.6% (637^th of 1072)