SamsungMZ-75E250B
OCZVTX4-25SAT3-256G

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

Controller: Indilinx Everest 2 IDX400M00-BC. Flash Memory: Intel Synchronous 25nm MLC. Release date: Q2 2012.

Real World Speed
Performance profile from 313,552 user samples
308,999 User Benchmarks
Best Bench: 123% 209GB free
Worst Bench: 71% 88GB free
Poor: 71% Great: 123%
SPEED RANK: 144th / 959
4,553 User Benchmarks
Best Bench: 108% 105GB free (System drive)
Worst Bench: 61% 65GB free
Poor: 61% Great: 108%
SPEED RANK: 197th / 959
Effective Speed
Effective SSD Speed
104 % Faster effective speed.
+15%
90.6 %
Read
Avg. Sequential Read Speed
468 MB/s Faster read speed.
+23%
380 MB/s
Write
Avg. Sequential Write Speed
435 MB/s Slightly faster write speed.
+12%
388 MB/s
4K Read
Avg. 4K Random Read Speed
39.7 MB/s Much faster random read.
+45%
27.4 MB/s
4K Write
Avg. 4K Random Write Speed
99.2 MB/s Slightly faster random write.
+8%
92 MB/s
Mixed
Avg. Sequential Mixed IO Speed
366 MB/s Much faster mixed IO speed.
+40%
261 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
53.1 MB/s Much faster random mixed IO.
+55%
34.2 MB/s
SusWrite
Avg. Sustained Write Speed
245 MB/s 357 MB/s Much faster sustained write speed.
+46%
Read
Peak Sequential Read Speed
507 MB/s Slightly faster peak read speed.
+10%
462 MB/s
Write
Peak Sequential Write Speed
492 MB/s Slightly faster peak write speed.
+8%
454 MB/s
4K Read
Peak 4K Random Read Speed
48.2 MB/s Much faster peak random read.
+42%
34 MB/s
4K Write
Peak 4K Random Write Speed
132 MB/s 132 MB/s
Mixed
Peak Sequential Mixed IO Speed
411 MB/s Much faster peak mixed IO speed.
+31%
314 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
65.5 MB/s Much faster peak random mixed IO.
+55%
42.2 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
326 MB/s 441 MB/s Much faster peak sustained write speed.
+35%
Market Share
Based on 9,141,296 SSDs tested.
Market Share
Market Share (trailing 30 days)
4.91 % Insanely higher market share.
+8,083%
0.06 %
Value
Value For Money
100 % Hugely better value.
+220%
31.3 %
User Rating
UBM User Rating
129 % Hugely more popular.
+111%
61 %
Price
Price (score)
$100 Much cheaper.
+75%
$400
Age
Newest
46 Months Much more recent.
+41%
78 Months
DQ Read
Peak 4K-64Thread Read Speed
386 MB/s Slightly faster peak deep queue read.
+13%
343 MB/s
DQ Write
Peak 4K-64Thread Write Speed
354 MB/s +0% 353 MB/s
AS-SSD Total
AS-SSD Total Score
1,286 Pts Slightly stronger server IO.
+9%
1,182 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
365 MB/s Slightly faster peak deep queue mixed IO.
+8%
338 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
338 MB/s Faster deep queue read.
+17%
288 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
309 MB/s Slightly faster deep queue write.
+10%
282 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
314 MB/s Faster deep queue mixed IO.
+17%
268 MB/s
Capacity
Capacity
250GB 256GB
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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 Vertex 4 is just over a year old but thanks to its recent firmware update (1.5), it still manages to perform almost on a par with the best drives currently available. One of the striking aspects of the Vertex is its well-rounded performance profile. With an AS-SSD score of 1137 and a real world speed of 548 the Vertex 4 is able to cope extremely well with both server and consumer type workloads. This drive uses the new Indilux Everest 2 controller, which unlike the previous generations of this drive which used a SandForce controller, is able to cope admirably with both compressible and incompressible data. Overall, the Vertex 4 is a great performing SSD that said, there are better value for money (and younger) drives available, including the Vertex 4's own successor, the OCZ Vector[Jun '13 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) October 2018 SSD Rankings.

Welcome to our 2.5" and M.2 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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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $380Nvidia GTX 1070 $323Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $155Nvidia GTX 1060-6GB $249Samsung 850 Evo 500GB $98
Intel Core i7-7700K $355AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 64GB $42
Seagate Barracuda 3TB (2016) $80Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $157SanDisk Ultra Fit 32GB $12
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