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SamsungMZ-77E1T0B
CrucialCT512M550SSD1
▲ 58182 ▼

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

VS
▲ 506 ▼

Controller: Marvell 88SS9189. Flash Memory: Micron Synchronous 20nm MLC. Release date ≤ Q2 2014.

Effective Speed 
+21%
Real World Speed
Performance profile from 134,727 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
5,683 User Benchmarks
Best Bench: 111% 167GB free
Worst Bench: 65% 6GB free (System drive)
Poor: 65% Great: 111%
SPEED RANK: 310th / 1080
Effective Speed
Effective SSD Speed 		112 % Faster effective speed.
+21% 		92.5 %
Average Score 
+23%
Read
Avg. Sequential Read Speed 		472 MB/s Faster read speed.
+12% 		421 MB/s
Write
Avg. Sequential Write Speed 		436 MB/s +3% 422 MB/s
4K Read
Avg. 4K Random Read Speed 		38.1 MB/s Much faster random read.
+45% 		26.3 MB/s
4K Write
Avg. 4K Random Write Speed 		87.8 MB/s +1% 86.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		402 MB/s Much faster mixed IO speed.
+36% 		295 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		50.4 MB/s Much faster random mixed IO.
+37% 		36.9 MB/s
SusWrite
Avg. Sustained Write Speed 		423 MB/s Faster sustained write speed.
+23% 		343 MB/s
Peak Score 
+26%
Read
Peak Sequential Read Speed 		516 MB/s Faster peak read speed.
+11% 		464 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.
+61% 		30.3 MB/s
4K Write
Peak 4K Random Write Speed 		125 MB/s +4% 120 MB/s
Mixed
Peak Sequential Mixed IO Speed 		464 MB/s Much faster peak mixed IO speed.
+44% 		322 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		67.5 MB/s Much faster peak random mixed IO.
+52% 		44.4 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		486 MB/s +5% 463 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,603,422 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.77 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		42.6 % Hugely better value.
+355% 		9.36 %
User Rating
UBM User Rating 		58 % More popular.
+16% 		50 %
Price
Price (score) 		$95 Much cheaper.
+66% 		$283
Nice To Haves 
+25%
Age
Newest 		45+ Months Much more recent.
+65% 		127+ Months
DQ Read
Peak 4K-64Thread Read Speed 		388 MB/s +1% 384 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		363 MB/s +0% 362 MB/s
AS-SSD Total
AS-SSD Total Score 		1,293 Pts +5% 1,236 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		373 MB/s Much faster peak deep queue mixed IO.
+61% 		232 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		355 MB/s Faster deep queue read.
+11% 		320 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		312 MB/s Slightly faster deep queue write.
+6% 		295 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		314 MB/s Much faster deep queue mixed IO.
+55% 		203 MB/s
Specifications 
Capacity
Capacity 		1TB 512GB
Conclusion 
Average Bench 112%
Average Bench 92.5%

Great SSD [Mar '21 Emerald_Wolf]

MORE DETAILS

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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]

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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?
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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?
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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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The Best
CPUGPUSSD
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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