CrucialCT275MX300SSD1
SanDiskSDSSDHII-240G-G25

Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC. Release date: Q2 2016.

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

Real World Speed
Performance profile from 37,662 user samples
19,402 User Benchmarks
Best Bench: 94% 116GB free
Worst Bench: 57% 60GB free (System drive)
Poor: 57% Great: 94%
SPEED RANK: 334th / 959
18,260 User Benchmarks
Best Bench: 103% 223GB free
Worst Bench: 62% 110GB free (System drive)
Poor: 62% Great: 103%
SPEED RANK: 295th / 959
Effective Speed
Effective SSD Speed
80.3 % 82.7 % +3%
Read
Avg. Sequential Read Speed
434 MB/s 448 MB/s +3%
Write
Avg. Sequential Write Speed
379 MB/s +4% 364 MB/s
4K Read
Avg. 4K Random Read Speed
24 MB/s 30.1 MB/s Faster random read.
+25%
4K Write
Avg. 4K Random Write Speed
88.1 MB/s Slightly faster random write.
+9%
80.8 MB/s
Mixed
Avg. Sequential Mixed IO Speed
336 MB/s Much faster mixed IO speed.
+36%
247 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
34.2 MB/s 37 MB/s Slightly faster random mixed IO.
+8%
SusWrite
Avg. Sustained Write Speed
217 MB/s Faster sustained write speed.
+28%
169 MB/s
Read
Peak Sequential Read Speed
471 MB/s 501 MB/s Slightly faster peak read speed.
+6%
Write
Peak Sequential Write Speed
477 MB/s +1% 470 MB/s
4K Read
Peak 4K Random Read Speed
28.6 MB/s 39.8 MB/s Much faster peak random read.
+39%
4K Write
Peak 4K Random Write Speed
120 MB/s 120 MB/s
Mixed
Peak Sequential Mixed IO Speed
399 MB/s Faster peak mixed IO speed.
+17%
340 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
42 MB/s 50.8 MB/s Faster peak random mixed IO.
+21%
SusWrite
Peak Sequential Sustained Write 60s Average
264 MB/s Slightly faster peak sustained write speed.
+11%
237 MB/s
Market Share
Based on 9,145,409 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.37 % Slightly higher market share.
+12%
0.33 %
Value
Value For Money
93.5 % 101 % Slightly better value.
+8%
User Rating
UBM User Rating
66 % +5% 63 %
Price
Price (score)
$85 $70 Cheaper.
+18%
Age
Newest
28 Months Much more recent.
+43%
49 Months
DQ Read
Peak 4K-64Thread Read Speed
237 MB/s 390 MB/s Much faster peak deep queue read.
+65%
DQ Write
Peak 4K-64Thread Write Speed
326 MB/s Slightly faster peak deep queue write.
+7%
305 MB/s
AS-SSD Total
AS-SSD Total Score
977 Pts 1,210 Pts Stronger server IO.
+24%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
306 MB/s Faster peak deep queue mixed IO.
+20%
254 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
215 MB/s 324 MB/s Much faster deep queue read.
+51%
ADQ Write
Avg. 4K-64Thread Write Speed
266 MB/s Slightly faster deep queue write.
+8%
246 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
249 MB/s Faster deep queue mixed IO.
+22%
204 MB/s
Capacity
Capacity
275GB 240GB
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The 275GB Crucial MX300 supersedes the MX200. Unlike its predecessor, the MX300 is TLC based and therefore suffers from weak write speeds in comparison to MLC drives. The MX300 utilises a sophisticated algorithm to enable fast burst write speeds provided that there is sufficient free space on the disk but as the drive fills up write performance drops to the relatively poor levels seen on other TLC drives (similar to mechanical drives). At current prices (70 USD) the MX300 competes well with other low end drives such as the OCZ Trion, Adata SP550 and Samsung 750 EVO. As stocks build the MX300 is likely to see further price cuts, so it could become a very interesting value proposition. See the current value leaders here[Sep '16 SSDrivePro]

MORE DETAILS

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

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 $350AMD RX 480 $280Samsung 850 Pro 256GB $160
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 $147SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $157SanDisk Ultra Fit 32GB $12
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