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SamsungMZ-77E1T0B
CrucialCT256M550SSD1
$152
▲ 58182 ▼

Controller: Samsung MKX. Memory: Samsung 128 layer TLC V-NAND. Release date ≈ Q1 2021.

VS
▲ 527,484 ▼
 $152 

Controller: Marvell 88SS9189. Flash Memory: Micron Synchronous 20nm MLC. Release date: Q1 2014.

Effective Speed 
+24%
Real World Speed
Performance profile from 137,377 user samples
Benchmark your SSD here
129,044 User Benchmarks
Best Bench: 137% 931GB free
Worst Bench: 82% 306GB free
Poor: 82% Great: 137%
SPEED RANK: 214th / 1080
8,333 User Benchmarks
Best Bench: 113% 106GB free
Worst Bench: 60% 231GB free
Poor: 60% Great: 113%
SPEED RANK: 328th / 1080
Effective Speed
Effective SSD Speed 		112 % Faster effective speed.
+24% 		90.5 %
Average Score 
+24%
Read
Avg. Sequential Read Speed 		472 MB/s Faster read speed.
+13% 		418 MB/s
Write
Avg. Sequential Write Speed 		436 MB/s +5% 416 MB/s
4K Read
Avg. 4K Random Read Speed 		38.1 MB/s Much faster random read.
+41% 		27.1 MB/s
4K Write
Avg. 4K Random Write Speed 		87.8 MB/s +3% 85 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		402 MB/s Much faster mixed IO speed.
+34% 		299 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		50.4 MB/s Much faster random mixed IO.
+33% 		37.9 MB/s
SusWrite
Avg. Sustained Write Speed 		423 MB/s Much faster sustained write speed.
+36% 		311 MB/s
Peak Score 
+24%
Read
Peak Sequential Read Speed 		516 MB/s Faster peak read speed.
+11% 		466 MB/s
Write
Peak Sequential Write Speed 		492 MB/s +5% 470 MB/s
4K Read
Peak 4K Random Read Speed 		48.9 MB/s Much faster peak random read.
+53% 		31.9 MB/s
4K Write
Peak 4K Random Write Speed 		125 MB/s Slightly faster peak random write.
+6% 		118 MB/s
Mixed
Peak Sequential Mixed IO Speed 		464 MB/s Much faster peak mixed IO speed.
+39% 		333 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		67.5 MB/s Much faster peak random mixed IO.
+45% 		46.4 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		486 MB/s Slightly faster peak sustained write speed.
+6% 		459 MB/s
Value & Sentiment 
+2,007%
Market Share
Based on 77,604,787 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.77 % Insanely higher market share.
+7,600% 		0.01 %
Value
Value For Money 		41.7 % Hugely better value.
+380% 		8.68 %
User Rating
UBM User Rating 		58 % More popular.
+12% 		52 %
Price
Price (score) 		$98 Much cheaper.
+36% 		$152
Nice To Haves 
+26%
Age
Newest 		45+ Months Much more recent.
+65% 		128 Months
DQ Read
Peak 4K-64Thread Read Speed 		388 MB/s +0% 387 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		363 MB/s +1% 361 MB/s
AS-SSD Total
AS-SSD Total Score 		1,293 Pts +4% 1,240 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		373 MB/s Much faster peak deep queue mixed IO.
+55% 		240 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		355 MB/s Faster deep queue read.
+14% 		311 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		312 MB/s Faster deep queue write.
+11% 		282 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		314 MB/s Much faster deep queue mixed IO.
+56% 		201 MB/s
Specifications 
Capacity
Capacity 		1TB 256GB
Conclusion 
Average Bench 112%
Average Bench 90.5%

Great SSD [Mar '21 Emerald_Wolf]

MORE DETAILS

The 256GB Crucial M550 is a welcome improvement over the 240GB M500. The new Marvel 88SS9189 controller has addressed our primary concern with the M500 which was poor sequential write speed. With sequential read/write speeds of 510/478 MB/s the M550 has a healthy core performance profile. Comparing the M550 and M500 shows that the new M550 leads on nearly every single performance metric. Unfortunately the M550 is priced significantly higher than the M500 but prices will likely drop as retailers build up stocks of the new M550. A key comparable for the M550 is the similarly priced market leading Samsung Evo. Comparing the Evo and M550 shows that the Evo is around 11% slower in terms of effective speed. [Mar '14 SSDrivePro]

MORE DETAILS

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8,333
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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.
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  • 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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  • - CPU tests include: integer, floating and string
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  • - Reports are generated and presented on userbenchmark.com
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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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Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
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Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
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We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
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The Best
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Intel Core i5-13600K $210Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $125
Intel Core i5-12600K $160Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $330
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