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

Controller: Marvell 88SS9187. Memory: SanDisk 19nm TLC. Release date: Q3 2014.

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

Real World Speed
Performance profile from 20,300 user samples
15,768 User Benchmarks
Best Bench: 101% 223GB free
Worst Bench: 56% 158GB free (System drive)
Poor: 56% Great: 101%
SPEED RANK: 293rd / 956
4,532 User Benchmarks
Best Bench: 106% 79GB free (System drive)
Worst Bench: 61% 15GB free (System drive)
Poor: 61% Great: 106%
SPEED RANK: 217th / 956
Effective Speed
Effective SSD Speed
81.7 % 87.2 % Slightly faster effective speed.
+7%
Read
Avg. Sequential Read Speed
449 MB/s Slightly faster read speed.
+7%
420 MB/s
Write
Avg. Sequential Write Speed
367 MB/s 394 MB/s Slightly faster write speed.
+7%
4K Read
Avg. 4K Random Read Speed
29.1 MB/s Slightly faster random read.
+9%
26.6 MB/s
4K Write
Avg. 4K Random Write Speed
76.7 MB/s 86.9 MB/s Slightly faster random write.
+13%
Mixed
Avg. Sequential Mixed IO Speed
251 MB/s 331 MB/s Much faster mixed IO speed.
+32%
4K Mixed
Avg. 4K Random Mixed IO Speed
35.8 MB/s Faster random mixed IO.
+23%
29 MB/s
SusWrite
Avg. Sustained Write Speed
176 MB/s 349 MB/s Hugely faster sustained write speed.
+98%
Read
Peak Sequential Read Speed
500 MB/s +1% 494 MB/s
Write
Peak Sequential Write Speed
473 MB/s 474 MB/s +0%
4K Read
Peak 4K Random Read Speed
38.9 MB/s Faster peak random read.
+16%
33.5 MB/s
4K Write
Peak 4K Random Write Speed
117 MB/s 129 MB/s Slightly faster peak random write.
+10%
Mixed
Peak Sequential Mixed IO Speed
347 MB/s 428 MB/s Faster peak mixed IO speed.
+23%
4K Mixed
Peak 4K Random Mixed IO Speed
49.7 MB/s Faster peak random mixed IO.
+24%
40.2 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
248 MB/s 455 MB/s Hugely faster peak sustained write speed.
+83%
Market Share
Based on 7,964,046 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.33 % Hugely higher market share.
+371%
0.07 %
Value
Value For Money
99.4 % Hugely better value.
+230%
30.1 %
User Rating
UBM User Rating
64 % +5% 61 %
Price
Price (score)
$70 Hugely cheaper.
+83%
$400
Age
Newest
47 Months Much more recent.
+38%
76 Months
DQ Read
Peak 4K-64Thread Read Speed
390 MB/s Slightly faster peak deep queue read.
+14%
342 MB/s
DQ Write
Peak 4K-64Thread Write Speed
309 MB/s 334 MB/s Slightly faster peak deep queue write.
+8%
AS-SSD Total
AS-SSD Total Score
1,210 Pts +4% 1,164 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
254 MB/s 327 MB/s Faster peak deep queue mixed IO.
+29%
ADQ Read
Avg. 4K-64Thread Read Speed
324 MB/s Much faster deep queue read.
+47%
221 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
249 MB/s Slightly faster deep queue write.
+8%
230 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
208 MB/s Much faster deep queue mixed IO.
+32%
158 MB/s
Capacity
Capacity
240GB 256GB
ADVERTISEMENT

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) August 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]

ADVERTISEMENT

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 $325Nvidia GTX 1070 $380Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $120
Intel Core i5-8600K $240AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $155SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $901SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $175SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback