SanDiskSDSSDHII-240G-G25
SamsungMZ-75E250B

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

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND

Real World Speed
Performance profile from 302,271 user samples
14,187 User Benchmarks
Best Bench: 103% 223GB free
Worst Bench: 56% 21GB free (System drive)
Poor: 56% Great: 103%
SPEED RANK: 259th / 955
288,084 User Benchmarks
Best Bench: 125% 172GB free (System drive)
Worst Bench: 75% 203GB free (System drive)
Poor: 75% Great: 125%
SPEED RANK: 133rd / 955
Effective Speed
Effective SSD Speed
82.8 % 106 % Faster effective speed.
+28%
Read
Avg. Sequential Read Speed
452 MB/s 468 MB/s +4%
Write
Avg. Sequential Write Speed
375 MB/s 440 MB/s Faster write speed.
+17%
4K Read
Avg. 4K Random Read Speed
29.9 MB/s 40 MB/s Much faster random read.
+34%
4K Write
Avg. 4K Random Write Speed
79.7 MB/s 101 MB/s Faster random write.
+27%
Mixed
Avg. Sequential Mixed IO Speed
250 MB/s 369 MB/s Much faster mixed IO speed.
+48%
4K Mixed
Avg. 4K Random Mixed IO Speed
36.5 MB/s 53.7 MB/s Much faster random mixed IO.
+47%
SusWrite
Avg. Sustained Write Speed
178 MB/s 261 MB/s Much faster sustained write speed.
+47%
Read
Peak Sequential Read Speed
502 MB/s 507 MB/s +1%
Write
Peak Sequential Write Speed
474 MB/s 491 MB/s +4%
4K Read
Peak 4K Random Read Speed
39.9 MB/s 48.6 MB/s Faster peak random read.
+22%
4K Write
Peak 4K Random Write Speed
119 MB/s 133 MB/s Slightly faster peak random write.
+12%
Mixed
Peak Sequential Mixed IO Speed
347 MB/s 409 MB/s Faster peak mixed IO speed.
+18%
4K Mixed
Peak 4K Random Mixed IO Speed
51.2 MB/s 66.1 MB/s Faster peak random mixed IO.
+29%
SusWrite
Peak Sequential Sustained Write 60s Average
235 MB/s 325 MB/s Much faster peak sustained write speed.
+38%
Market Share
Based on 7,606,926 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.32 % 5.21 % Insanely higher market share.
+1,528%
Value
Value For Money
101 % 102 % +1%
User Rating
UBM User Rating
64 % 128 % Hugely more popular.
+100%
Price
Price (score)
$70 Much cheaper.
+30%
$100
Age
Newest
46 Months 43 Months Slightly more recent.
+7%
DQ Read
Peak 4K-64Thread Read Speed
389 MB/s +1% 386 MB/s
DQ Write
Peak 4K-64Thread Write Speed
311 MB/s 355 MB/s Slightly faster peak deep queue write.
+14%
AS-SSD Total
AS-SSD Total Score
1,215 Pts 1,289 Pts Slightly stronger server IO.
+6%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
253 MB/s 366 MB/s Much faster peak deep queue mixed IO.
+45%
ADQ Read
Avg. 4K-64Thread Read Speed
319 MB/s 349 MB/s Slightly faster deep queue read.
+9%
ADQ Write
Avg. 4K-64Thread Write Speed
246 MB/s 316 MB/s Faster deep queue write.
+28%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
200 MB/s 326 MB/s Much faster deep queue mixed IO.
+63%
Capacity
Capacity
240GB 250GB
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 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

Solid State Drive Rankings (Price vs Performance) July 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 $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $120
Intel Core i7-7700K $300AMD RX 480 $280Samsung 850 Pro 256GB $136
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $160SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $945SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $55HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback