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External

USB3.0 250GB

▲ 501 ▼

Release date ≈ Q1 2018.

Average Bench: 70.5% (671st of 1080)

Based on 193 user benchmarks.  Model: External USB3.0
Poor: 55%Average: 70.5% Great: 83%

Popular builds with this SSD

Good average bench

The External USB3.0 250GB averaged 29.5% 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 150MB/s
Avg. 4K Random Read Speed 26.3MB/s

Good consistency

The range of scores (95th - 5th percentile) for the External USB3.0 250GB is 28.2%. This is a relatively narrow range which indicates that the External USB3.0 250GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. 4K Random Write Speed 37.6MB/s
Avg. 4K-64Thread Read Speed 163MB/s

Average Bench

(Based on 193 samples)
Rank 67170.5%
Min Avg Max
301 Read 368 416
275 Write 355 410
254 Mixed 332 390
190 SusWrite 298 356
76.2% 338 MB/s
Min Avg Max
17.3 4K Read 26.3 37
26.8 4K Write 37.6 48.7
18.6 4K Mixed 29.6 37.2
97.7% 31.2 MB/s
Min Avg Max
73.8 DQ Read 163 236
69.5 DQ Write 151 193
44.3 DQ Mixed 150 220
114% 155 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
118GB free
Firmware: 0204
SusWrite @10s intervals: 335 302 302 303 303 303 MB/s
80.3% Excellent
Read 398
Write 349
Mixed 340
SusWrite 308
78% 349 MB/s
4K Read 32.5
4K Write 38.8
4K Mixed 35.6
115% 35.6 MB/s
DQ Read 232
DQ Write 193
DQ Mixed 220
163% 215 MB/s
62GB free
Firmware: 0209
SusWrite @10s intervals: 317 328 329 330 324 331 MB/s
69.8% Good
Read 318
Write 349
Mixed 328
SusWrite 327
75% 330 MB/s
4K Read 24.5
4K Write 34.6
4K Mixed 29.9
94% 29.7 MB/s
DQ Read 171
DQ Write 172
DQ Mixed 200
142% 181 MB/s
233GB free
Firmware: 0204
SusWrite @10s intervals: 207 202 201 202 202 242 MB/s
68.5% Good
Read 389
Write 391
Mixed 359
SusWrite 209
76% 337 MB/s
4K Read 29.3
4K Write 38.7
4K Mixed 32.8
107% 33.6 MB/s
DQ Read 158
DQ Write 146
DQ Mixed 159
117% 154 MB/s
34GB free
Firmware: 0204
SusWrite @10s intervals: 221 285 234 191 107 83 MB/s
58.5% Above average
Read 327
Write 295
Mixed 311
SusWrite 187
63% 280 MB/s
4K Read 22.2
4K Write 34.8
4K Mixed 26.6
86% 27.9 MB/s
DQ Read 189
DQ Write 127
DQ Mixed 144
111% 153 MB/s
193 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 77,589,491 SSDs tested

Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical USB3.0 250GB Builds (Compare 10 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 2%
Tree trunk
Desktop
Desktop 33%
Sail boat
Workstation
Workstation 2%
Tree trunk

System: HP 110-400il

CPU
Pentium J2900IntelBench 35%, 4,259 samples10x
GPU
HD Graphics (Bay Trail 0.667 - 0.854 GHz)IntelBench 1%, 90,156 samples10x
SSD
USB3.0 250GBExternalBench 70%, 193 samples1x
RAM
4KTF25664HZ-1G6E1 Kingston ACR16D3LFS1KBG/2G 4GBMicronBench 30%, 4 samples2x
HMT425S6AFR6A-PB 1x2GBHynixBench 18%, 3,854 samples2x
HMT351S6EFR8A-PB HMT451S6BFR8A-PB 8GBHynixBench 47%, 645 samples2x
EDIT WITH CUSTOM PC BUILDER

Popular USB3.0 250GB systems:

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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?
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The Best
CPUGPUSSD
Intel Core i5-12400F $111Nvidia RTX 4060 $290WD Black SN850X M.2 2TB $130
Intel Core i5-12600K $164Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-13600K $210Nvidia RTX 4070 $500Crucial T700 M.2 4TB $389
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