TEST
YOUR SSD
ADD TO PC
BUILD

WDC

WD121KRYZ-01W0RB1 12TB

▲ 500 ▼

Release date ≈ Q4 2020.

Average Bench: 22% (1055th of 1072)

Based on 17 user benchmarks.  Model: WDC WD121KRYZ-01W0RB1
Poor: 18%Average: 22% Great: 27%

Very poor average bench

The WDC WD121KRYZ-01W0RB1 12TB averaged 77.9% 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. Sequential Write Speed 191MB/s
Avg. Sustained Write Speed 189MB/s

Excellent consistency

The range of scores (95th - 5th percentile) for the WDC WD121KRYZ-01W0RB1 12TB is just 9.39%. This is an extremely narrow range which indicates that the WDC WD121KRYZ-01W0RB1 12TB performs superbly consistently under varying real world conditions.

Weaknesses

Avg. 4K-64Thread Read Speed 4.48MB/s
Avg. 4K-64Thread Write Speed 7.01MB/s
ADVERTISEMENT

Average Bench

(Based on 17 samples)
Rank 105522%
Min Avg Max
112 Read 184 233
125 Write 191 241
82.3 Mixed 100 112
149 SusWrite 189 241
37.4% 166 MB/s
Min Avg Max
1.1 4K Read 1.67 2.4
8.3 4K Write 10 10.8
1.2 4K Mixed 1.51 1.9
9.77% 4.4 MB/s
Min Avg Max
3.1 DQ Read 4.48 5.3
5.6 DQ Write 7.01 9.4
4.3 DQ Mixed 6.01 7.4
4.5% 5.83 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
181GB free
Firmware: 02.02H02
SusWrite @10s intervals: 197 193 202 206 196 203 MB/s
23.2% Poor
Read 200
Write 201
Mixed 102
SusWrite 200
40% 176 MB/s
4K Read 1.6
4K Write 10.2
4K Mixed 1.4
10% 4.4 MB/s
DQ Read 3.7
DQ Write 7.8
DQ Mixed 5.1
4% 5.53 MB/s
482GB free
Firmware: 02.02H02
SusWrite @10s intervals: 174 181 184 174 182 178 MB/s
21% Poor
Read 177
Write 186
Mixed 99.4
SusWrite 179
36% 160 MB/s
4K Read 1.3
4K Write 10.5
4K Mixed 1.5
10% 4.43 MB/s
DQ Read 4.2
DQ Write 6
DQ Mixed 4.3
4% 4.83 MB/s
348GB free
Firmware: 02.02H02
SusWrite @10s intervals: 161 156 163 161 167 162 MB/s
21% Poor
Read 199
Write 198
Mixed 100
SusWrite 162
37% 165 MB/s
4K Read 1.8
4K Write 10.3
4K Mixed 1.4
10% 4.5 MB/s
DQ Read 4.5
DQ Write 6.4
DQ Mixed 5.9
4% 5.6 MB/s
11TB free
Firmware: 02.02H02
SusWrite @10s intervals: 194 194 190 197 199 193 MB/s
20.3% Poor
Read 138
Write 148
Mixed 84.8
SusWrite 194
32% 141 MB/s
4K Read 1.5
4K Write 10.3
4K Mixed 1.3
9% 4.37 MB/s
DQ Read 4.3
DQ Write 6
DQ Mixed 6.7
5% 5.67 MB/s
816GB free
Firmware: 02.02H02
SusWrite @10s intervals: 145 145 152 154 147 151 MB/s
17.8% Very poor
Read 146
Write 161
Mixed 94.1
SusWrite 149
31% 137 MB/s
4K Read 1.7
4K Write 8.3
4K Mixed 1.4
9% 3.8 MB/s
DQ Read 4.8
DQ Write 8.3
DQ Mixed 4.4
4% 5.83 MB/s
17 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,665,264 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
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.

UserBenchmark of the month

Gaming Desktop ProGaming

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]

ADVERTISEMENT

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

Added n/a ago.
Your
opinion?
▲Like ▼Dislike
Ready to retire
Age: 3 years

Speed Comparisons

vs Crucial MX500 250GB
vs Samsung 850 Evo 120GB
vs Samsung 860 Evo 250GB
vs Samsung 870 Evo 250GB
vs Samsung 850 Pro 512GB
vs Samsung 850 Evo 250GB
vs HyperX Savage 240GB
vs Crucial MX300 275GB
vs Samsung 850 Evo 1TB

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 »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
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
If you make a purchase via one of these links, our site may earn a commission
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback