SanDiskSDSSDHII-240G-G25
OCZVTX4-25SAT3-256G

Controller: Marvell 88SS9187. Memory: SanDisk 19nm TLC.

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

Real World Speed
Performance profile from 16,763 user samples
12,854 User Benchmarks
Best Bench: 82% 108GB free
Worst Bench: 47% 184GB free
Poor: 47% Great: 82%
SPEED RANK: 440th / 885
3,909 User Benchmarks
Best Bench: 104% 177GB free
Worst Bench: 60% 0GB free
Poor: 60% Great: 104%
SPEED RANK: 151st / 885
Effective Speed
Effective SSD Speed
65.1 % 84.9 % Much faster effective speed.
+31%
Read
Avg. Sequential Read Speed
454 MB/s +1% 451 MB/s
Write
Avg. Sequential Write Speed
243 MB/s 396 MB/s Much faster write speed.
+63%
4K Read
Avg. 4K Random Read Speed
27 MB/s Slightly faster random read.
+5%
25.7 MB/s
4K Write
Avg. 4K Random Write Speed
48.6 MB/s 83.9 MB/s Much faster random write.
+73%
Mixed
Avg. Sequential Mixed IO Speed
238 MB/s 383 MB/s Much faster mixed IO speed.
+61%
4K Mixed
Avg. 4K Random Mixed IO Speed
14.8 MB/s 24.6 MB/s Much faster random mixed IO.
+66%
Read
Peak Sequential Read Speed
497 MB/s 497 MB/s
Write
Peak Sequential Write Speed
340 MB/s 480 MB/s Much faster peak write speed.
+41%
4K Read
Peak 4K Random Read Speed
36.2 MB/s Slightly faster peak random read.
+8%
33.4 MB/s
4K Write
Peak 4K Random Write Speed
78.4 MB/s 128 MB/s Much faster peak random write.
+63%
Mixed
Peak Sequential Mixed IO Speed
325 MB/s 435 MB/s Much faster peak mixed IO speed.
+34%
4K Mixed
Peak 4K Random Mixed IO Speed
20.9 MB/s 34.7 MB/s Much faster peak random mixed IO.
+66%
Market Share
Based on 5,667,951 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.39 % Hugely higher market share.
+290%
0.1 %
Value
Value For Money
74.6 % Hugely better value.
+154%
29.3 %
User Rating
UBM User Rating
64 % +5% 61 %
Price
Price (score)
$76 Hugely cheaper.
+81%
$400
Age
Newest
41 Months Much more recent.
+41%
70 Months
DQ Read
Peak 4K-64Thread Read Speed
353 MB/s Slightly faster peak deep queue read.
+6%
334 MB/s
DQ Write
Peak 4K-64Thread Write Speed
203 MB/s 315 MB/s Much faster peak deep queue write.
+55%
AS-SSD Total
AS-SSD Total Score
984 Pts 1,132 Pts Stronger server IO.
+15%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
51 MB/s 122 MB/s Hugely faster peak deep queue mixed IO.
+139%
ADQ Read
Avg. 4K-64Thread Read Speed
185 MB/s Slightly faster deep queue read.
+6%
174 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
133 MB/s 200 MB/s Much faster deep queue write.
+50%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
30.5 MB/s 70.9 MB/s Hugely faster deep queue mixed IO.
+132%
Capacity
Capacity
240GB 256GB
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The Sandisk Ultra II sits above Sandisk's Ultra Plus and below their Extreme Pro. The Ultra Plus would probably have been phased out completely were it not for its continued success within budget space. The Ultra II is the first Sandisk drive to utilize cheaper (and slower) TLC NAND. Similarly to the Extreme Pro, the Ultra II utilizes an nCache which operates a portion of the NAND in simulated SLC mode. This strategy also matches the one employed by Samsung's now 14 months old Evo. Comparing the Ultra II and Evo shows broad performance equivalence which given the Ultra II's 15% price discount makes it the better choice today. That said it's probably worth waiting for the release of the 850 Evo which will pack another 14 months of Samsung's market leading R&D and will probably steal the show. [Sep '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) February 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.
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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $88
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $149
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $125
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $185SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $975SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $206SanDisk Extreme 16GB $18
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