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Toshiba
SamsungMZ-75E250B
▲ 500 ▼
  

Release date ≈ Q4 2016.

VS
▲ 5640,704 ▼

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

Effective Speed 
+24%
Real World Speed
Performance profile from 951,594 user samples
Benchmark your SSD here
3 User Benchmarks
Best Bench: 100% 93GB free
Worst Bench: 59% 17GB free (System drive)
Poor: 59% Great: 100%
SPEED RANK: 441st / 1080
951,591 User Benchmarks
Best Bench: 124% 140GB free
Worst Bench: 72% 233GB free
Poor: 72% Great: 124%
SPEED RANK: 251st / 1080
Effective Speed
Effective SSD Speed 		83.5 % 103 % Faster effective speed.
+24%
Average Score 
+27%
Read
Avg. Sequential Read Speed 		470 MB/s +1% 466 MB/s
Write
Avg. Sequential Write Speed 		371 MB/s 434 MB/s Faster write speed.
+17%
4K Read
Avg. 4K Random Read Speed 		22.2 MB/s 39.4 MB/s Much faster random read.
+77%
4K Write
Avg. 4K Random Write Speed 		85.3 MB/s 94.6 MB/s Faster random write.
+11%
Mixed
Avg. Sequential Mixed IO Speed 		392 MB/s Slightly faster mixed IO speed.
+6% 		370 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		31.8 MB/s 52.2 MB/s Much faster random mixed IO.
+64%
SusWrite
Avg. Sustained Write Speed 		195 MB/s 247 MB/s Faster sustained write speed.
+27%
Peak Score 
+17%
Read
Peak Sequential Read Speed 		516 MB/s +2% 507 MB/s
Write
Peak Sequential Write Speed 		474 MB/s 492 MB/s +4%
4K Read
Peak 4K Random Read Speed 		28.8 MB/s 47.6 MB/s Much faster peak random read.
+65%
4K Write
Peak 4K Random Write Speed 		102 MB/s 129 MB/s Faster peak random write.
+26%
Mixed
Peak Sequential Mixed IO Speed 		499 MB/s Faster peak mixed IO speed.
+20% 		416 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		46.6 MB/s 64.6 MB/s Much faster peak random mixed IO.
+39%
SusWrite
Peak Sequential Sustained Write 60s Average 		304 MB/s 328 MB/s Slightly faster peak sustained write speed.
+8%
Value & Sentiment 
+∞%
Market Share
Based on 77,494,433 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.68 % Insanely higher market share.
+∞%
User Rating
UBM User Rating 		50 % 56 % More popular.
+12%
Nice To Haves 
+38%
Age
Newest 		96+ Months More recent.
+19% 		119 Months
DQ Read
Peak 4K-64Thread Read Speed 		348 MB/s 386 MB/s Faster peak deep queue read.
+11%
DQ Write
Peak 4K-64Thread Write Speed 		314 MB/s 362 MB/s Faster peak deep queue write.
+15%
AS-SSD Total
AS-SSD Total Score 		1,118 Pts 1,290 Pts Stronger server IO.
+15%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		236 MB/s 370 MB/s Much faster peak deep queue mixed IO.
+57%
ADQ Read
Avg. 4K-64Thread Read Speed 		274 MB/s 354 MB/s Faster deep queue read.
+29%
ADQ Write
Avg. 4K-64Thread Write Speed 		193 MB/s 308 MB/s Much faster deep queue write.
+60%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		135 MB/s 320 MB/s Hugely faster deep queue mixed IO.
+137%
Specifications 
Capacity
Capacity 		128GB 250GB
Conclusion 
Average Bench 83.5%
Average Bench 103%

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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