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Samsung

850 PRO 256GB (TurboPC EX)

▲ 500 ▼

Release date ≈ Q1 2015.

Average Bench: 132% (183rd of 1080)

Based on 5 user benchmarks.  Model: Samsung SSD 850 PRO 256GB (TurboPC EX)
Poor: 120%Average: 132% Great: 138%

Outstanding average bench

The Samsung 850 PRO 256GB (TurboPC EX) averaged 32.0% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung 850 PRO 256GB (TurboPC EX) near the top of the comparison list.

Strengths

Avg. 4K Random Mixed IO Speed 75.8MB/s
Avg. 4K-64Thread Mixed IO Speed 181MB/s

Unknown consistency

There are too few samples to reasonably determine how consistently this SSD perfroms. This result should be interpreted with caution.

Weaknesses

Avg. 4K-64Thread Write Speed 139MB/s
Avg. Sequential Write Speed 432MB/s
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Average Bench

(Based on 5 samples)
Rank 183132%
Min Avg Max
508 Read 521 526
174 Write 432 501
294 Mixed 463 514
105% 472 MB/s
Min Avg Max
28.8 4K Read 34.1 37.8
149 4K Write 154 167
72 4K Mixed 75.8 82.3
230% 88 MB/s
Min Avg Max
374 DQ Read 382 392
100 DQ Write 139 164
117 DQ Mixed 181 237
155% 234 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
146GB free (System drive)
Firmware: EXM01B6Q Max speed: SATA 3.0 600 MB/s
138% Outstanding
Read 525
Write 498
Mixed 499
113% 507 MB/s
4K Read 37.8
4K Write 149
4K Mixed 77.4
235% 88 MB/s
DQ Read 381
DQ Write 139
DQ Mixed 149
140% 223 MB/s
143GB free (System drive)
Firmware: EXM01B6Q Max speed: SATA 3.0 600 MB/s
136% Outstanding
Read 526
Write 501
Mixed 514
115% 514 MB/s
4K Read 37.1
4K Write 154
4K Mixed 72
230% 87.7 MB/s
DQ Read 382
DQ Write 141
DQ Mixed 216
172% 246 MB/s
124GB free (System drive)
Firmware: EXM01B6Q Max speed: SATA 3.0 600 MB/s
135% Outstanding
Read 525
Write 499
Mixed 511
114% 512 MB/s
4K Read 37.3
4K Write 149
4K Mixed 73.7
230% 86.8 MB/s
DQ Read 392
DQ Write 100
DQ Mixed 188
154% 227 MB/s
95GB free (System drive)
Firmware: EXM02B6Q Max speed: SATA 3.0 600 MB/s
132% Outstanding
Read 520
Write 488
Mixed 497
112% 502 MB/s
4K Read 28.8
4K Write 151
4K Mixed 73.8
218% 84.6 MB/s
DQ Read 374
DQ Write 149
DQ Mixed 117
124% 213 MB/s
24GB free (System drive)
Firmware: EXM01B6Q Max speed: SATA 3.0 600 MB/s
120% Outstanding
Read 508
Write 174
Mixed 294
71% 325 MB/s
4K Read 29.6
4K Write 167
4K Mixed 82.3
239% 93.1 MB/s
DQ Read 380
DQ Write 164
DQ Mixed 237
185% 261 MB/s

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 76,303,129 SSDs tested

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  • Fastest real world speed - Real World Speed measures performance for typical consumers.

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Speed Comparisons

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1080 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?
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The Best
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Intel Core i5-12600K $171Nvidia RTX 4060 $293WD Black SN850X M.2 2TB $150
Intel Core i5-13600K $270Nvidia RTX 4060-Ti $388WD Black SN850X M.2 1TB $90
Intel Core i5-12400F $110Nvidia RTX 4070 $520Crucial T700 M.2 4TB $353
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