TEST
YOUR USB

SanDisk (ExtHD)

SDSSDH3512G 512GB

▲ 500 ▼

Release date ≈ Q3 2018.

Average Bench: 269% (1st of 639)

Based on 5 user benchmarks.  Device: VID 174c PID 55aa Model: SanDisk SDSSDH3512G
Poor: 196%Average: 269% Great: 332%

Outstanding average bench

The SanDisk SDSSDH3512G 512GB averaged 168.6% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the SanDisk SDSSDH3512G 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 67.9MB/s
Avg. 4K Random Write Speed 55.6MB/s

Unknown consistency

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

Weaknesses

Avg. Sequential Read Speed 325MB/s
Avg. 4K Random Read Speed 23MB/s
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Average Bench

(Based on 5 samples)
Rank 1269%
Min Avg Max
294 Read 325 380
280 Write 312 342
144 Mixed 221 286
146 SusWrite 207 302
351% 266 MB/s
Min Avg Max
18.9 4K Read 23 28.1
24.3 4K Write 55.6 69
21.4 4K Mixed 31.2 37.7
3,039% 36.6 MB/s
Min Avg Max
22.9 DQ Read 27.6 29.8
34.2 DQ Write 67.9 83.3
19.4 DQ Mixed 31.3 40.7
3,477% 42.3 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
399GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 167 172 172 172 170 169 MB/s
299% Outstanding
Read 321
Write 321
Mixed 253
SusWrite 170
352% 266 MB/s
4K Read 27.9
4K Write 67.9
4K Mixed 37.5
3,688% 44.4 MB/s
DQ Read 29.6
DQ Write 83.3
DQ Mixed 34.3
4,110% 49.1 MB/s
95GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 207 319 337 304 267 257 MB/s
196% Outstanding
Read 380
Write 342
Mixed 286
SusWrite 282
429% 322 MB/s
4K Read 20.5
4K Write 24.3
4K Mixed 21.4
1,630% 22.1 MB/s
DQ Read 22.9
DQ Write 34.2
DQ Mixed 19.4
1,908% 25.5 MB/s
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We highlight the best USB flash drive in terms of balanced performance and value for money using current prices, sequential read, sequential write , 4k read and 4k write speed. The speeds are combined to form a single effective speed which measures performance for tasks such as copying photos, music and videos. Effective speed is adjusted by current price and capacity to yield value for money. Finally thousands of individual user ratings are used to validate our benchmark figures. [USBFlashPro]

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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.

 Comments

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See how consistently different USBs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

Storage Devices FAQ
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Intel Core i5-13600K $254Nvidia RTX 4060 $300Crucial MX500 250GB $39
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $163Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
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Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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