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SamsungMZ-75E250B
CrucialCT240BX500SSD1
▲ 5640,704 ▼

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

VS
▲ 54319 ▼

Release date ≈ Q3 2018.

Effective Speed 
+85%
Real World Speed
Performance profile from 1,094,392 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
142,801 User Benchmarks
Best Bench: 92% 211GB free
Worst Bench: 30% 26GB free (System drive)
Poor: 30% Great: 92%
SPEED RANK: 849th / 1080
Effective Speed
Effective SSD Speed 		103 % Hugely faster effective speed.
+85% 		56 %
Average Score 
+95%
Read
Avg. Sequential Read Speed 		466 MB/s +2% 459 MB/s
Write
Avg. Sequential Write Speed 		434 MB/s Faster write speed.
+12% 		388 MB/s
4K Read
Avg. 4K Random Read Speed 		39.4 MB/s Much faster random read.
+52% 		25.9 MB/s
4K Write
Avg. 4K Random Write Speed 		94.6 MB/s Hugely faster random write.
+127% 		41.7 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		370 MB/s Much faster mixed IO speed.
+57% 		235 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		52.2 MB/s Hugely faster random mixed IO.
+358% 		11.4 MB/s
SusWrite
Avg. Sustained Write Speed 		247 MB/s Much faster sustained write speed.
+57% 		157 MB/s
Peak Score 
+21%
Read
Peak Sequential Read Speed 		507 MB/s 508 MB/s +0%
Write
Peak Sequential Write Speed 		492 MB/s Slightly faster peak write speed.
+9% 		453 MB/s
4K Read
Peak 4K Random Read Speed 		47.6 MB/s Faster peak random read.
+29% 		37 MB/s
4K Write
Peak 4K Random Write Speed 		129 MB/s Faster peak random write.
+15% 		112 MB/s
Mixed
Peak Sequential Mixed IO Speed 		416 MB/s 427 MB/s +3%
4K Mixed
Peak 4K Random Mixed IO Speed 		64.6 MB/s Hugely faster peak random mixed IO.
+103% 		31.9 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		328 MB/s 356 MB/s Slightly faster peak sustained write speed.
+9%
Value & Sentiment 
+1%
Market Share
Based on 77,533,872 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.5 % Hugely higher market share.
+138% 		0.21 %
Value
Value For Money 		13.4 % 21.4 % Much better value.
+60%
User Rating
UBM User Rating 		56 % +4% 54 %
Price
Price (score) 		$100 $23 Much cheaper.
+77%
Nice To Haves 
+307%
Age
Newest 		119 Months 74+ Months Much more recent.
+38%
DQ Read
Peak 4K-64Thread Read Speed 		386 MB/s Much faster peak deep queue read.
+63% 		237 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		362 MB/s Slightly faster peak deep queue write.
+5% 		344 MB/s
AS-SSD Total
AS-SSD Total Score 		1,290 Pts Stronger server IO.
+28% 		1,004 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		370 MB/s Hugely faster peak deep queue mixed IO.
+647% 		49.5 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		354 MB/s Hugely faster deep queue read.
+112% 		167 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		308 MB/s Much faster deep queue write.
+31% 		236 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		320 MB/s Insanely faster deep queue mixed IO.
+1,611% 		18.7 MB/s
Specifications 
Capacity
Capacity 		250GB 240GB
Conclusion 
Average Bench 103%
Average Bench 56%

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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Solid State Drives
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