SanDisk SD8SB8U-512G-1122

X400 512GB

X400 512GB
BENCHMARKS (7,913)
MKT (0%)
BUILDS
(1)
BUY • $99

Effective Speed -17%Effective Speed -17%Average Score -21%Read -3%, Write -8%, 4K Read -23%, 4K Write -20%, Mixed -37%, 4K Mixed -28%, SusWrite -26%Peak Score -13%Read -1%, Write -2%, 4K Read -15%, 4K Write -7%, Mixed -21%, 4K Mixed -18%, SusWrite -25%Value & Sentiment -438%User Rating -14%, Market Share -1,733%, Price -3%, Value 0%Nice To Haves -15%DQ Read 2%, DQ Write -25%, DQ Mixed -40%, ADQ Read 1%, ADQ Write -17%, ADQ Mixed -30%, Age -5%, AS-SSD Total -7%

Average Bench: 83.8% (425^th of 1072)

Based on 7,913 user benchmarks. Models: SanDisk SD8SB8U512G1122, SanDisk SD8SN8U512G1122, SanDis SD8SB8U512G1122

Poor: 60%Average: 83.8% Great: 104%

Popular builds with this SSD

Very good average bench

The SanDisk X400 512GB averaged just 16.1% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the SanDisk X400 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 200MB/s

Avg. 4K Random Mixed IO Speed 35.2MB/s

See where your SSD ranks →

Average consistency

The range of scores (95th - 5th percentile) for the SanDisk X400 512GB is 44.4%. This is a relatively wide range which indicates that the SanDisk X400 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sustained Write Speed 236MB/s

Avg. Sequential Mixed IO Speed 262MB/s

Average Bench

(Based on 7,913 samples)

Rank 42583.8%

Min	Avg	Max
350	Read 444	501
273	Write 375	475
181	Mixed 262	351
93.1	SusWrite 236	310
73.6% 329 MB/s

Min	Avg	Max
16	4K Read 27.8	37.4
31.8	4K Write 72.9	114
18.9	4K Mixed 35.2	49.2
126% 45.3 MB/s

Min	Avg	Max
224	DQ Read 328	373
119	DQ Write 246	287
122	DQ Mixed 200	236
173% 258 MB/s

User Benchmarks

Bench

Sequential

Random 4k

Deep queue 4k

The fastest SSD (mainstream) averages a speed of 100%

USA-User, 3 days ago.

476GB free

Firmware: X4162000

SusWrite @10s intervals: 356 272 264 272 271 269 MB/s

98.1% Outstanding

Write 442

Mixed 356

SusWrite 284

87% 387 MB/s

4K Read 31.3

4K Write 105

4K Mixed 41.9

157% 59.3 MB/s

DQ Read 348

DQ Write 284

DQ Mixed 238

200% 290 MB/s

USA-User, 6 days ago.

80GB free

Firmware: X4120000

SusWrite @10s intervals: 321 278 184 96 236 268 MB/s

92.3% Outstanding

Write 451

Mixed 313

SusWrite 230

83% 372 MB/s

4K Read 33.9

4K Write 74.8

4K Mixed 41.2

144% 50 MB/s

DQ Read 344

DQ Write 282

DQ Mixed 231

195% 286 MB/s

USA-User, 11 days ago.

310GB free (System drive)

Firmware: X4140000

SusWrite @10s intervals: 307 295 286 287 287 285 MB/s

79.3% Very good

Write 415

Mixed 280

SusWrite 291

79% 351 MB/s

4K Read 25.2

4K Write 49.9

4K Mixed 28.9

102% 34.7 MB/s

DQ Read 338

DQ Write 263

DQ Mixed 216

185% 272 MB/s

USA-User, 7 days ago.

49GB free

Firmware: X4162000

SusWrite @10s intervals: 322 269 298 290 265 223 MB/s

74.7% Very good

Write 365

Mixed 269

SusWrite 278

77% 344 MB/s

4K Read 14.9

4K Write 46.2

4K Mixed 25.9

80% 29 MB/s

DQ Read 344

DQ Write 279

DQ Mixed 224

192% 282 MB/s

CAN-User, 5 days ago.

155GB free (System drive)

Firmware: X4120000

SusWrite @10s intervals: 178 174 176 70 103 121 MB/s

72.4% Very good

Write 309

Mixed 183

SusWrite 137

58% 260 MB/s

4K Read 29.6

4K Write 59.5

4K Mixed 27.5

112% 38.9 MB/s

DQ Read 351

DQ Write 263

DQ Mixed 164

161% 259 MB/s

THA-User, 9 days ago.

71GB free (System drive)

Firmware: X4162000

SusWrite @10s intervals: 179 118 82 74 74 65 MB/s

72.1% Very good

Write 316

Mixed 172

SusWrite 98.6

55% 248 MB/s

4K Read 26.7

4K Write 69.7

4K Mixed 34.6

122% 43.7 MB/s

DQ Read 335

DQ Write 217

DQ Mixed 204

172% 252 MB/s

USA-User, 10 days ago.

38GB free (System drive)

Firmware: X4120000

SusWrite @10s intervals: 209 186 190 89 99 99 MB/s

71.1% Very good

Write 333

Mixed 194

SusWrite 145

63% 282 MB/s

4K Read 26.1

4K Write 47.7

4K Mixed 28.5

101% 34.1 MB/s

DQ Read 330

DQ Write 246

DQ Mixed 171

160% 249 MB/s

USA-User, 9 days ago.

171GB free (System drive)

Firmware: X4140000

SusWrite @10s intervals: 224 175 168 127 141 141 MB/s

48.7% Average

Write 286

Mixed 195

SusWrite 163

49% 216 MB/s

4K Read 16.6

4K Write 50

4K Mixed 25.8

85% 30.8 MB/s

DQ Read 60.5

DQ Write 93.9

DQ Mixed 66.1

53% 73.5 MB/s

7,913 MORE »

Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,663,930 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 X400 512GB Builds (Compare 2,518 builds) See popular component choices, score breakdowns and rankings

Gaming 51%

Yacht

Desktop 86%

Aircraft carrier

Workstation 43%

Speed boat

Motherboard: Gigabyte GA-Z170-HD3P - $113

CPU
Core i7-6700KIntel $180Bench 81%, 588,978 samples	810x
Core i5-6600KIntel $81Bench 72%, 342,244 samples	550x
Core i7-6700Intel $180Bench 72%, 282,363 samples	302x

GPU
GTX 1060-6GBNvidia $117Bench 56%, 1,368,019 samples	272x
GTX 1070Nvidia $132Bench 80%, 1,459,281 samples	262x
GTX 1080Nvidia $400Bench 102%, 1,082,454 samples	239x

SSD
X400 512GBSanDisk $99Bench 84%, 7,913 samples	1x

RAM
Vengeance LPX DDR4 3000 C15 2x8GBCorsair $43Bench 82%, 606,405 samples	103x
Vengeance LPX DDR4 3200 C16 2x8GBCorsair $40Bench 85%, 653,654 samples	89x
Fury DDR4 2133 C14 2x8GBHyperX $125Bench 73%, 59,072 samples	75x

EDIT WITH CUSTOM PC BUILDER

Value: 87% - Excellent

Total price: $552

Popular X400 512GB compatible motherboards:

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

Welcome to our 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 value for money upgrades.

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How it works

- Download and run UserBenchmark
- 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
- SkillBench (space shooter) tests user input accuracy
- Reports are generated and presented on userbenchmark.com
- Identify the strongest components in your PC
- See speed test results from other users
- Compare your components to the current market leaders
- Explore your best upgrade options with a virtual PC build
- Compare your in-game FPS to other users with your hardware

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]

Group Test Results

Best user rated - User sentiment trumps benchmarks for this comparison.
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1072 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

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 »

CPU	GPU	SSD
Intel Core i5-13600K $279	Nvidia RTX 4060 $300	Crucial MX500 250GB $40
Intel Core i5-12400F $134	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182	Nvidia RTX 4070 $409	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $39	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43	SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51	G.SKILL Trident Z DDR4 3200 C14 4x16GB $351	SanDisk Ultra Fit 32GB $16

SanDisk SD8SB8U-512G-1122

X400 512GB

Average Bench: 83.8% (425^th of 1072)

Popular builds with this SSD

Very good average bench

Strengths

Average consistency

Weaknesses

Average Bench

Market Share (See Leaders)

Prices

CHOOSE A COMPONENT:

Motherboard: Gigabyte GA-Z170-HD3P - $113

Popular X400 512GB compatible motherboards:

UserBenchmark of the month

How it works

Group Test Results

Comments

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Frequently Asked Questions

Best User Rated

		$997 months
		$1902 years

SanDisk SD8SB8U-512G-1122

X400 512GB

Average Bench: 83.8% (425th of 1072)

Popular builds with this SSD

Very good average bench

Strengths

Average consistency

Weaknesses

Average Bench

Market Share (See Leaders)

Prices

CHOOSE A COMPONENT:

Motherboard: Gigabyte GA-Z170-HD3P - $113

Popular X400 512GB compatible motherboards:

UserBenchmark of the month

How it works

Group Test Results

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Comments

Excellent (edit your comment) Add link

Speed Comparisons

Frequently Asked Questions

Best User Rated

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Average Bench: 83.8% (425^th of 1072)