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SamsungMZ-75E250B
SamsungMZ-7TE120BW
▲ 5640,704 ▼

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

VS
▲ 5413,088 ▼

Controller: Samsung 3 Core MEX. Memory: Samsung 19nm Toggle Mode TLC. Release date: Q3 2013.

Effective Speed 
+13%
Real World Speed
Performance profile from 1,056,035 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
104,444 User Benchmarks
Best Bench: 108% 112GB free
Worst Bench: 63% 42GB free
Poor: 63% Great: 108%
SPEED RANK: 320th / 1080
Effective Speed
Effective SSD Speed 		103 % Faster effective speed.
+13% 		91.4 %
Average Score 
+19%
Read
Avg. Sequential Read Speed 		466 MB/s +1% 461 MB/s
Write
Avg. Sequential Write Speed 		434 MB/s Slightly faster write speed.
+7% 		404 MB/s
4K Read
Avg. 4K Random Read Speed 		39.4 MB/s +1% 38.9 MB/s
4K Write
Avg. 4K Random Write Speed 		94.6 MB/s Slightly faster random write.
+9% 		87 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		370 MB/s Faster mixed IO speed.
+17% 		317 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		52.2 MB/s Faster random mixed IO.
+14% 		45.8 MB/s
SusWrite
Avg. Sustained Write Speed 		247 MB/s Hugely faster sustained write speed.
+82% 		136 MB/s
Peak Score 
+17%
Read
Peak Sequential Read Speed 		507 MB/s +0% 506 MB/s
Write
Peak Sequential Write Speed 		492 MB/s +1% 489 MB/s
4K Read
Peak 4K Random Read Speed 		47.6 MB/s +3% 46.3 MB/s
4K Write
Peak 4K Random Write Speed 		129 MB/s Slightly faster peak random write.
+9% 		118 MB/s
Mixed
Peak Sequential Mixed IO Speed 		416 MB/s Slightly faster peak mixed IO speed.
+6% 		392 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		64.6 MB/s Faster peak random mixed IO.
+16% 		55.6 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		328 MB/s Hugely faster peak sustained write speed.
+83% 		179 MB/s
Value & Sentiment 
+171%
Market Share
Based on 77,563,375 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.72 % Hugely higher market share.
+620% 		0.1 %
Value
Value For Money 		13.4 % Much better value.
+74% 		7.7 %
User Rating
UBM User Rating 		56 % +4% 54 %
Price
Price (score) 		$100 $85 Cheaper.
+15%
Nice To Haves 
+29%
Age
Newest 		119 Months More recent.
+12% 		136 Months
DQ Read
Peak 4K-64Thread Read Speed 		386 MB/s +1% 381 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		362 MB/s 362 MB/s
AS-SSD Total
AS-SSD Total Score 		1,290 Pts +2% 1,268 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		370 MB/s Hugely faster peak deep queue mixed IO.
+107% 		179 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		354 MB/s +4% 339 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		308 MB/s +4% 297 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		320 MB/s Hugely faster deep queue mixed IO.
+100% 		160 MB/s
Specifications 
Capacity
Capacity 		250GB 120GB
Conclusion 
Average Bench 103%
Average Bench 91.4%

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]

MORE DETAILS

The 120GB Evo, like its 250GB sibling, features a second level Turbowrite cache (TWC). This 3GB block of high speed SLC memory allows the Evo to write data at 370 MB/s, nearly double its normal rate. When the TWC is full write speeds drop by around 50% but since consumers generally write less than 3GB in a typical write operation, the performance drop will rarely be noticed. On the other hand, in a server environment this sort of performance degradation would be unacceptable. Comparing the 120GB and 250GB Evos shows that they have similar performance profiles. The performance equivalence between the different capacities, coupled with the fact that their prices are almost linear, implies that both capacities represent roughly the same value for money. Within its TWC, the 120GB Evo is capable of chart topping burst IO rates and it sits squarely amongst the best performing 120GB drives. [Aug '14 SSDrivePro]

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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Solid State Drives
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