Average Bench: 78.3% (375th of 964)

Based on 1,330 user benchmarks.  Model: ADATA SP920SS

The ADATA SP920 shares the same controller (Marvel 88SS9189), and for capacities over 256GB the same NAND configuration as the excellent Crucial M550. The lower capacity SP920 drives however have fewer NAND channels than the M550. Comparing the 512GB M550 and SP920 shows that the drives have comparable performance but at the 256GB and 128GB capacities the M550 has a significantly faster sequential write speed. The 256GB SP920 does have an average effective speed and it is priced below average so overall it represents reasonably good value for money. That said, there are both faster and cheaper SSDs available in the now both heavily saturated and extremely competitive SSD market. [May '15 SSDrivePro]


Good average bench

The Adata Premier Pro SP920 256GB averaged 21.6% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Adata Premier Pro SP920 256GB near the top of the comparison list.


Avg. 4K Random Write Speed 73.4MB/s
Avg. 4K Random Read Speed 24.3MB/s

Average consistency

The range of scores (95th - 5th percentile) for the Adata Premier Pro SP920 256GB is 40.9%. This is a relatively wide range which indicates that the Adata Premier Pro SP920 256GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 234MB/s
Avg. Sequential Write Speed 306MB/s

Average Bench

(Based on 1,330 samples)
Min Avg Max
370 Read 469 525
153 Write 306 348
180 Mixed 312 413
83.5 SusWrite 234 340
73.7% 330 MB/s
Min Avg Max
17.1 4K Read 24.3 29.9
33.6 4K Write 73.4 113
12.2 4K Mixed 25.2 41.1
108% 41 MB/s
Min Avg Max
23.1 DQ Read 230 370
51.9 DQ Write 217 319
12.8 DQ Mixed 66.3 174
92.9% 171 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
192GB free (System drive)
Firmware: MU01
SusWrite @10s intervals: 318 332 335 338 339 337 MB/s
Read 423
Write 335
Mixed 275
SusWrite 333
77% 341 MB/s
4K Read 24.3
4K Write 76.8
4K Mixed 35.7
123% 45.6 MB/s
DQ Read 366
DQ Write 313
DQ Mixed 214
195% 298 MB/s
45GB free (System drive)
Firmware: MU01
SusWrite @10s intervals: 254 110 96 102 86 94 MB/s
Read 444
Write 330
Mixed 282
SusWrite 124
66% 295 MB/s
4K Read 24.9
4K Write 77.9
4K Mixed 35.6
125% 46.1 MB/s
DQ Read 359
DQ Write 310
DQ Mixed 103
140% 257 MB/s
45GB free (System drive)
Firmware: MU01
SusWrite @10s intervals: 211 106 93 92 95 85 MB/s
Read 391
Write 324
Mixed 192
SusWrite 114
57% 255 MB/s
4K Read 26.2
4K Write 70.7
4K Mixed 28.5
114% 41.8 MB/s
DQ Read 326
DQ Write 127
DQ Mixed 149
130% 200 MB/s
1,330 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 9,548,750 SSDs tested.


Approx. $92 @ launch in Apr '14
AmazonUS $2035 months
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Typical Premier Pro SP920 256GB Builds (Compare 1,934 builds) See popular component choices, score breakdowns and rankings.
Gaming 57%
Desktop 56%
Workstation 35%
Sail boat

Motherboard: Asrock B85M Pro4 - $87

EDIT WITH CUSTOM PC BUILDER Value: 65% - Good Total price: $774

Popular Premier Pro SP920 256GB compatible motherboards:

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware 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 upgrades.

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How it works

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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.
  • - Reports are generated and presented on userbenchmark.com.
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Solid State Drive Rankings (Price vs Performance) November 2018 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.


Controller: Marvell 88SS9189. Flash Memory: Micron 20nm MLC

The superb SSD for high-definition media...

Added 3 years ago.

Above average

3 years ago.

964 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

 Best User Rated

The Best.
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AMD Ryzen 5 1600 $130Nvidia GTX 1060-6GB $243Samsung 850 Evo 500GB $106
Intel Core i5-8600K $237AMD RX 480 $280Samsung 850 Pro 256GB $100
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $130SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $130SanDisk Ultra Fit 32GB $12
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