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SamsungMZ-75E250B
CrucialCT480BX200SSD1
▲ 5640,704 ▼

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date: Q4 2014.

VS
▲ 51130 ▼

Controller: Silicon Motion SM2256. Flash Memory: Micron 16nm MLC. Release date: Q4 2015.

Effective Speed 
+33%
Real World Speed
Performance profile from 962,881 user samples
Benchmark your SSD here
951,591 User Benchmarks
Best Bench: 124% 140GB free
Worst Bench: 72% 233GB free
Poor: 72% Great: 124%
SPEED RANK: 251st / 1080
11,290 User Benchmarks
Best Bench: 95% 84GB free (System drive)
Worst Bench: 57% 93GB free (System drive)
Poor: 57% Great: 95%
SPEED RANK: 537th / 1080
Effective Speed
Effective SSD Speed 		103 % Much faster effective speed.
+33% 		77.6 %
Average Score 
+32%
Read
Avg. Sequential Read Speed 		466 MB/s +3% 454 MB/s
Write
Avg. Sequential Write Speed 		434 MB/s Faster write speed.
+16% 		375 MB/s
4K Read
Avg. 4K Random Read Speed 		39.4 MB/s Much faster random read.
+40% 		28.2 MB/s
4K Write
Avg. 4K Random Write Speed 		94.6 MB/s Much faster random write.
+33% 		71.1 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		370 MB/s Faster mixed IO speed.
+16% 		319 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		52.2 MB/s Much faster random mixed IO.
+37% 		38.1 MB/s
SusWrite
Avg. Sustained Write Speed 		247 MB/s Much faster sustained write speed.
+79% 		138 MB/s
Peak Score 
+32%
Read
Peak Sequential Read Speed 		507 MB/s +1% 500 MB/s
Write
Peak Sequential Write Speed 		492 MB/s Faster peak write speed.
+10% 		447 MB/s
4K Read
Peak 4K Random Read Speed 		47.6 MB/s Much faster peak random read.
+43% 		33.2 MB/s
4K Write
Peak 4K Random Write Speed 		129 MB/s Faster peak random write.
+16% 		111 MB/s
Mixed
Peak Sequential Mixed IO Speed 		416 MB/s +5% 398 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		64.6 MB/s Much faster peak random mixed IO.
+31% 		49.2 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		328 MB/s Hugely faster peak sustained write speed.
+114% 		153 MB/s
Value & Sentiment 
+778%
Market Share
Based on 77,580,371 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.63 % Insanely higher market share.
+3,050% 		0.02 %
Value
Value For Money 		13.4 % Better value.
+16% 		11.5 %
User Rating
UBM User Rating 		56 % Slightly more popular.
+10% 		51 %
Price
Price (score) 		$100 Much cheaper.
+37% 		$160
Nice To Haves 
+28%
Age
Newest 		119 Months 108 Months Slightly more recent.
+9%
DQ Read
Peak 4K-64Thread Read Speed 		386 MB/s Faster peak deep queue read.
+20% 		323 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		362 MB/s Slightly faster peak deep queue write.
+7% 		337 MB/s
AS-SSD Total
AS-SSD Total Score 		1,290 Pts Stronger server IO.
+16% 		1,116 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		370 MB/s Much faster peak deep queue mixed IO.
+52% 		243 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		354 MB/s Much faster deep queue read.
+30% 		272 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		308 MB/s Much faster deep queue write.
+41% 		219 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		320 MB/s Much faster deep queue mixed IO.
+68% 		190 MB/s
Specifications 
Capacity
Capacity 		250GB 480GB
Conclusion 
Average Bench 103%
Average Bench 77.6%

The 250GB Samsung 850 Evo has a similar architecture to its hugely successful predecessor, the 840 Evo. Both drives are TLC based but the 850 uses 3D V-NAND as opposed to regular NAND. Both drives also feature a Turbowrite cache (TWC) which buffers up to 3GB of writes. The TWC enables high burst write speeds but when the cache exhausts write speeds drop to 300 MB/s. Comparing the 850 and 840 Evos shows that effective speed, has improved by 11% and the warranty has been extended from three to five years but prices are also up by 11%. The 850 Evo does put in superb benchmarks (second only to the 850 Pro) but these are only valid within the TWC. At current price levels the 850 Evo struggles to compete with the value leaders. [Dec '14 SSDrivePro]

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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
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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?
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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?
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Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $389
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