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OYSC21AC120M4 120GB

▲ 500 ▼

Release date ≈ Q4 2017.

Average Bench: 38.8% (954th of 1072)

Based on 10 user benchmarks.  Model: OYSC21AC120M4
Poor: 26%Average: 38.8% Great: 57%

Poor average bench

The OYSC21AC120M4 120GB averaged 61.2% 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 Mixed IO Speed 66MB/s
Avg. 4K Random Read Speed 17.7MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the OYSC21AC120M4 120GB is 30.2%. This is a relatively narrow range which indicates that the OYSC21AC120M4 120GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 100MB/s
Avg. Sequential Write Speed 106MB/s
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Average Bench

(Based on 10 samples)
Rank 95438.8%
Min Avg Max
100 Read 130 194
84 Write 106 136
84.5 Mixed 112 146
89.6 SusWrite 100 114
25.2% 112 MB/s
Min Avg Max
11.5 4K Read 17.7 27.5
19.3 4K Write 46.4 93.6
8.47 4K Mixed 20.2 34.1
77.3% 28.1 MB/s
Min Avg Max
15.7 DQ Read 83.1 170
45 DQ Write 85.3 134
23.2 DQ Mixed 66 91.9
54.6% 78.1 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
79GB free
Firmware: 506ABBF0
SusWrite @10s intervals: 94 97 101 101 100 101 MB/s
58% Above average
Read 158
Write 120
Mixed 122
SusWrite 99.1
28% 125 MB/s
4K Read 27.5
4K Write 86.2
4K Mixed 34.1
131% 49.3 MB/s
DQ Read 127
DQ Write 121
DQ Mixed 85.5
75% 111 MB/s
72GB free
Firmware: 506ABBF0
SusWrite @10s intervals: 105 101 101 101 98 101 MB/s
56.5% Above average
Read 158
Write 111
Mixed 133
SusWrite 101
28% 126 MB/s
4K Read 27.5
4K Write 93.6
4K Mixed 29.5
129% 50.2 MB/s
DQ Read 112
DQ Write 117
DQ Mixed 75.7
68% 102 MB/s
58GB free (System drive)
Firmware: 504ABBF0
SusWrite @10s intervals: 99 94 89 89 96 87 MB/s
29.3% Poor
Read 104
Write 87.5
Mixed 84.5
SusWrite 92.2
21% 92.1 MB/s
4K Read 13.6
4K Write 23.5
4K Mixed 15.6
53% 17.6 MB/s
DQ Read 87.4
DQ Write 46.2
DQ Mixed 79.7
56% 71.1 MB/s

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,712,132 SSDs tested

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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]

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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.

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Speed Comparisons

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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 »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $273Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $177Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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