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CrucialCT128M550SSD3
Group Average(9 Highest-Voted)
▲ 500 ▼

Release date ≈ Q3 2014.

VS
Effective Speed 
+571%
Real World Speed
Performance profile from 349 user samples
Benchmark your SSD here
349 User Benchmarks
Best Bench: 100% 64GB free
Worst Bench: 57% 56GB free (System drive)
Poor: 57% Great: 100%
SPEED RANK: 477th / 1080
Effective Speed
Effective SSD Speed 		81.2 % 545 % Hugely faster effective speed.
+571%
Average Score 
+691%
Read
Avg. Sequential Read Speed 		456 MB/s 4,195 MB/s Hugely faster read speed.
+820%
Write
Avg. Sequential Write Speed 		333 MB/s 4,660 MB/s Insanely faster write speed.
+1,299%
4K Read
Avg. 4K Random Read Speed 		24.2 MB/s 88.8 MB/s Hugely faster random read.
+267%
4K Write
Avg. 4K Random Write Speed 		71.6 MB/s 207 MB/s Hugely faster random write.
+190%
Mixed
Avg. Sequential Mixed IO Speed 		334 MB/s 3,232 MB/s Hugely faster mixed IO speed.
+868%
4K Mixed
Avg. 4K Random Mixed IO Speed 		28.5 MB/s 111 MB/s Hugely faster random mixed IO.
+288%
SusWrite
Avg. Sustained Write Speed 		261 MB/s 3,152 MB/s Insanely faster sustained write speed.
+1,108%
Peak Score 
+888%
Read
Peak Sequential Read Speed 		521 MB/s 5,930 MB/s Insanely faster peak read speed.
+1,038%
Write
Peak Sequential Write Speed 		352 MB/s 6,432 MB/s Insanely faster peak write speed.
+1,727%
4K Read
Peak 4K Random Read Speed 		30.9 MB/s 192 MB/s Hugely faster peak random read.
+521%
4K Write
Peak 4K Random Write Speed 		110 MB/s 379 MB/s Hugely faster peak random write.
+244%
Mixed
Peak Sequential Mixed IO Speed 		413 MB/s 4,669 MB/s Insanely faster peak mixed IO speed.
+1,031%
4K Mixed
Peak 4K Random Mixed IO Speed 		41.4 MB/s 219 MB/s Hugely faster peak random mixed IO.
+428%
SusWrite
Peak Sequential Sustained Write 60s Average 		346 MB/s 4,577 MB/s Insanely faster peak sustained write speed.
+1,223%
Value & Sentiment 
+∞%
Market Share
Based on 77,554,666 SSDs tested
See market share leaders
User Rating
UBM User Rating 		50 % 68.3 % Much more popular.
+37%
Market Share
Market Share (trailing 30 days) 		0 % 0.52 % Insanely higher market share.
+∞%
Price
Price (score) 		$378 209 USD Hugely cheaper.
+81%
Value
Value For Money 		2.34 % 210 % Insanely better value.
+8,857%
Nice To Haves 
+642%
DQ Read
Peak 4K-64Thread Read Speed 		380 MB/s 2,319 MB/s Hugely faster peak deep queue read.
+510%
DQ Write
Peak 4K-64Thread Write Speed 		325 MB/s 1,900 MB/s Hugely faster peak deep queue write.
+485%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		222 MB/s 2,098 MB/s Hugely faster peak deep queue mixed IO.
+845%
ADQ Read
Avg. 4K-64Thread Read Speed 		256 MB/s 1,710 MB/s Hugely faster deep queue read.
+568%
ADQ Write
Avg. 4K-64Thread Write Speed 		238 MB/s 1,257 MB/s Hugely faster deep queue write.
+428%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		113 MB/s 1,485 MB/s Insanely faster deep queue mixed IO.
+1,214%
Age
Newest 		123+ Months 19.4 Months Hugely more recent.
+533%
AS-SSD Total
AS-SSD Total Score 		1,172 Pts 7,699 Pts Hugely stronger server IO.
+557%
Specifications 
Capacity
Capacity 		128GB   —
User Builds 
349
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Solid State Drive Rankings (Price vs Performance) November 2024 SSD Rankings

Welcome to our 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.
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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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 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 »

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The Best
CPUGPUSSD
Intel Core i5-13600K $210Nvidia RTX 4060 $278WD Black SN850X M.2 2TB $135
Intel Core i5-12600K $159Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $84
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $400
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