Samsung

PM851a 2.5 7mm 1024GB

PM851a 2.5 7mm 1024GB
BENCHMARKS (306)
MKT (0%)
BUILDS
(0)

Effective Speed -10%Effective Speed -10%Average Score -14%Read 0%, Write 1%, 4K Read -38%, 4K Write -29%, Mixed -6%, 4K Mixed -54%, SusWrite 30%Peak Score -7%Read 0%, Write 0%, 4K Read -32%, 4K Write -17%, Mixed 17%, 4K Mixed -39%, SusWrite 23%Value & Sentiment User Rating -14%, Market Share -∞%Nice To Haves -4%DQ Read 5%, DQ Write -1%, DQ Mixed -5%, ADQ Read -5%, ADQ Write -5%, ADQ Mixed -13%, Age -3%, AS-SSD Total -1%

Average Bench: 89.8% (333^rd of 1072)

Based on 306 user benchmarks. Model: SAMSUNG SSD PM851a 2.5 7mm 1024GB

Poor: 65%Average: 89.8% Great: 112%

Popular builds with this SSD

Very good average bench

The Samsung PM851a 2.5 7mm 1024GB averaged just 10.1% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung PM851a 2.5 7mm 1024GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 230MB/s

Avg. 4K-64Thread Write Speed 275MB/s

See where your SSD ranks →

Average consistency

The range of scores (95th - 5th percentile) for the Samsung PM851a 2.5 7mm 1024GB is 47.4%. This is a relatively wide range which indicates that the Samsung PM851a 2.5 7mm 1024GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Mixed IO Speed 340MB/s

Avg. Sustained Write Speed 384MB/s

Average Bench

(Based on 306 samples)

Rank 33389.8%

Min	Avg	Max
376	Read 459	507
233	Write 409	486
241	Mixed 340	497
175	SusWrite 384	476
89.5% 398 MB/s

Min	Avg	Max
12.9	4K Read 24.9	32.5
30.4	4K Write 68	105
13.6	4K Mixed 29.3	42
111% 40.8 MB/s

Min	Avg	Max
26	DQ Read 310	384
67.6	DQ Write 275	354
15	DQ Mixed 230	316
190% 272 MB/s

User Benchmarks

Bench

Sequential

Random 4k

Deep queue 4k

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

USA-User, 3 days ago.

636GB free

Firmware: EXV01D0Q

SusWrite @10s intervals: 450 453 455 454 449 447 MB/s

97.5% Outstanding

Write 441

Mixed 322

SusWrite 451

96% 427 MB/s

4K Read 29.4

4K Write 75.5

4K Mixed 37.6

133% 47.5 MB/s

DQ Read 218

DQ Write 187

DQ Mixed 194

148% 200 MB/s

USA-User, 7 days ago.

667GB free (System drive)

Firmware: 1D0Q

SusWrite @10s intervals: 402 409 416 404 409 410 MB/s

86.4% Excellent

Write 419

Mixed 325

SusWrite 408

92% 409 MB/s

4K Read 25.3

4K Write 36

4K Mixed 28.4

94% 29.9 MB/s

DQ Read 383

DQ Write 195

DQ Mixed 98.4

124% 226 MB/s

306 MORE »

Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,721,059 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 PM851a 2.5 7mm 1024GB Builds (Compare 5,226 builds) See popular component choices, score breakdowns and rankings

Gaming 31%

Sail boat

Desktop 79%

Battleship

Workstation 27%

Raft

Motherboard: Dell Precision Tower 5810

CPU
Xeon E5-1620 v3IntelBench 72%, 10,197 samples	1,240x
Xeon E5-1650 v3IntelBench 77%, 7,962 samples	956x
Xeon E5-1650 v4IntelBench 83%, 3,842 samples	409x

GPU
Quadro M4000NvidiaBench 32%, 9,043 samples	415x
Quadro K2200Nvidia $440Bench 16%, 13,860 samples	386x
Quadro M2000NvidiaBench 21%, 5,678 samples	287x

SSD
PM851a 2.5 7mm 1024GBSamsungBench 90%, 306 samples	1x

RAM
HMA451R7MFR8N-TF 4x4GBHynixBench 90%, 1,961 samples	349x
HMA41GR7MFR8N-TF 4x8GBHynixBench 96%, 1,319 samples	208x
9ASF1G72PZ-2G3B1 4x8GBMicronBench 93%, 857 samples	193x

EDIT WITH CUSTOM PC BUILDER

Popular PM851a 2.5 7mm 1024GB compatible motherboards:

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.

UserBenchmark of the month

Gaming

Desktop

ProGaming

CPU

GPU

SSD

HDD

RAM

USB

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 $295	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

PM851a 2.5 7mm 1024GB

Average Bench: 89.8% (333^rd of 1072)

Popular builds with this SSD

Very good average bench

Strengths

Average consistency

Weaknesses

Average Bench

Market Share (See Leaders)

CHOOSE A COMPONENT:

Motherboard: Dell Precision Tower 5810

Popular PM851a 2.5 7mm 1024GB compatible motherboards:

UserBenchmark of the month

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Best User Rated

Samsung

PM851a 2.5 7mm 1024GB

Average Bench: 89.8% (333rd of 1072)

Popular builds with this SSD

Very good average bench

Strengths

Average consistency

Weaknesses

Average Bench

Market Share (See Leaders)

CHOOSE A COMPONENT:

Motherboard: Dell Precision Tower 5810

Popular PM851a 2.5 7mm 1024GB compatible motherboards:

UserBenchmark of the month

How it works

Group Test Results

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Speed Comparisons

Frequently Asked Questions

Best User Rated

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Average Bench: 89.8% (333^rd of 1072)