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Dataram

S40Z 480GB S

▲ 500 ▼

Release date ≈ Q2 2019.

Average Bench: 36.5% (974th of 1072)

Based on 11 user benchmarks.  Model: DATARAM S40Z 480GB S
Poor: 19%Average: 36.5% Great: 46%

Poor average bench

The Dataram S40Z 480GB S averaged 63.4% 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 20.5MB/s
Avg. 4K Random Mixed IO Speed 15.9MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Dataram S40Z 480GB S is 26.7%. This is a relatively narrow range which indicates that the Dataram S40Z 480GB S performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. 4K-64Thread Read Speed 27.4MB/s
Avg. Sequential Mixed IO Speed 84.3MB/s
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Average Bench

(Based on 11 samples)
Rank 97436.5%
Min Avg Max
36.4 Read 154 184
3.3 Write 126 186
31.3 Mixed 84.3 175
11.6 SusWrite 135 187
28% 125 MB/s
Min Avg Max
3.6 4K Read 20.5 26.4
6.6 4K Write 31 56.6
5.1 4K Mixed 15.9 19.3
67.9% 22.5 MB/s
Min Avg Max
13.6 DQ Read 27.4 30.7
6 DQ Write 53.9 90.5
4.8 DQ Mixed 22 27.5
22% 34.4 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
413GB free (System drive)
Firmware: V4.1
SusWrite @10s intervals: 188 184 187 189 184 187 MB/s
46% Average
Read 184
Write 175
Mixed 73.9
SusWrite 186
35% 155 MB/s
4K Read 26.4
4K Write 33.2
4K Mixed 19
82% 26.2 MB/s
DQ Read 29.7
DQ Write 85.1
DQ Mixed 26.3
29% 47 MB/s
405GB free (System drive)
Firmware: V4.1
SusWrite @10s intervals: 159 185 184 186 184 153 MB/s
45.2% Average
Read 184
Write 186
Mixed 95.3
SusWrite 175
36% 160 MB/s
4K Read 26
4K Write 39.1
4K Mixed 18.9
84% 28 MB/s
DQ Read 30.7
DQ Write 49.8
DQ Mixed 26.5
24% 35.7 MB/s
413GB free (System drive)
Firmware: V4.1
SusWrite @10s intervals: 129 185 186 186 192 183 MB/s
45% Average
Read 179
Write 182
Mixed 77.3
SusWrite 177
35% 154 MB/s
4K Read 26.1
4K Write 34.4
4K Mixed 18.9
82% 26.5 MB/s
DQ Read 30.4
DQ Write 74.2
DQ Mixed 23.9
26% 42.8 MB/s
398GB free (System drive)
Firmware: V4.1
SusWrite @10s intervals: 104 164 171 188 189 188 MB/s
43.4% Average
Read 182
Write 170
Mixed 90.8
SusWrite 167
34% 153 MB/s
4K Read 24.9
4K Write 36.5
4K Mixed 17.7
80% 26.4 MB/s
DQ Read 30.4
DQ Write 57.5
DQ Mixed 23.6
24% 37.2 MB/s
425GB free
Firmware: V4.7
SusWrite @10s intervals: 35 35 35 35 36 36 MB/s
11% Very poor
Read 36.4
Write 34
Mixed 34.9
SusWrite 35.4
8% 35.2 MB/s
4K Read 7.2
4K Write 9.3
4K Mixed 5.1
22% 7.2 MB/s
DQ Read 13.6
DQ Write 14
DQ Mixed 10.6
9% 12.7 MB/s
11 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,664,152 SSDs tested

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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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 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?
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ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
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WD Blue 1TB (2012) $30Corsair 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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