SanDiskSDSSDHII-240G-G25
CrucialCT275MX300SSD1

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

Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC.

Real World Speed
Performance profile from 34,967 user samples
16,447 User Benchmarks
Best Bench: 81% 223GB free
Worst Bench: 47% 63GB free
Poor: 47% Great: 81%
SPEED RANK: 487th / 929
18,520 User Benchmarks
Best Bench: 81% 56GB free
Worst Bench: 49% 86GB free
Poor: 49% Great: 81%
SPEED RANK: 460th / 929
Effective Speed
Effective SSD Speed
65.6 % 67.3 % +3%
Read
Avg. Sequential Read Speed
455 MB/s 464 MB/s +2%
Write
Avg. Sequential Write Speed
253 MB/s 294 MB/s Faster write speed.
+16%
4K Read
Avg. 4K Random Read Speed
27.4 MB/s Faster random read.
+22%
22.4 MB/s
4K Write
Avg. 4K Random Write Speed
50.2 MB/s 56.6 MB/s Slightly faster random write.
+13%
Mixed
Avg. Sequential Mixed IO Speed
248 MB/s 304 MB/s Faster mixed IO speed.
+23%
4K Mixed
Avg. 4K Random Mixed IO Speed
14.6 MB/s 16.6 MB/s Slightly faster random mixed IO.
+14%
Read
Peak Sequential Read Speed
499 MB/s +3% 485 MB/s
Write
Peak Sequential Write Speed
342 MB/s +1% 339 MB/s
4K Read
Peak 4K Random Read Speed
37.1 MB/s Much faster peak random read.
+36%
27.3 MB/s
4K Write
Peak 4K Random Write Speed
77.2 MB/s 78 MB/s +1%
Mixed
Peak Sequential Mixed IO Speed
326 MB/s 338 MB/s +4%
4K Mixed
Peak 4K Random Mixed IO Speed
21 MB/s 23.9 MB/s Slightly faster peak random mixed IO.
+14%
Market Share
Based on 7,169,120 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.38 % 0.56 % Much higher market share.
+47%
Value
Value For Money
79.8 % 80.4 % +1%
User Rating
UBM User Rating
65 % 67 % +3%
Price
Price (score)
$70 Slightly cheaper.
+15%
$82
Age
Newest
45 Months 24 Months Much more recent.
+47%
DQ Read
Peak 4K-64Thread Read Speed
354 MB/s Much faster peak deep queue read.
+54%
230 MB/s
DQ Write
Peak 4K-64Thread Write Speed
205 MB/s 215 MB/s +5%
AS-SSD Total
AS-SSD Total Score
989 Pts Stronger server IO.
+25%
792 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
51 MB/s Faster peak deep queue mixed IO.
+27%
40.1 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
168 MB/s Much faster deep queue read.
+40%
120 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
131 MB/s +1% 130 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
30 MB/s Faster deep queue mixed IO.
+23%
24.3 MB/s
Capacity
Capacity
240GB 275GB
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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]

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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]

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Solid State Drive Rankings (Price vs Performance) June 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
AMD Ryzen 5 1600 $170Nvidia GTX 1070 $440Samsung 850 Evo 250GB $104
Intel Core i7-8700K $320Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $122
Intel Core i5-8600K $238AMD RX 480 $280Samsung 850 Pro 256GB $121
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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