SanDiskSDSSDXPS-240G
CrucialCT275MX300SSD1

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC.

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

Real World Speed
Performance profile from 8,552 user samples
2,409 User Benchmarks
Best Bench: 106% 95GB free
Worst Bench: 62% 105GB free
Poor: 62% Great: 106%
SPEED RANK: 115th / 853
6,143 User Benchmarks
Best Bench: 82% 211GB free
Worst Bench: 52% 87GB free
Poor: 52% Great: 82%
SPEED RANK: 332nd / 853
Effective Speed
Effective SSD Speed
85.4 % Faster effective speed.
+23%
69.4 % -23%
Read
Avg. Sequential Read Speed
478 MB/s +3% 466 MB/s -3%
Write
Avg. Sequential Write Speed
414 MB/s Much faster write speed.
+38%
300 MB/s -38%
4K Read
Avg. 4K Random Read Speed
28.3 MB/s Faster random read.
+23%
23 MB/s -23%
4K Write
Avg. 4K Random Write Speed
73.1 MB/s Faster random write.
+21%
60.6 MB/s -21%
Mixed
Avg. Sequential Mixed IO Speed
417 MB/s Much faster mixed IO speed.
+33%
314 MB/s -33%
4K Mixed
Avg. 4K Random Mixed IO Speed
22.4 MB/s Faster random mixed IO.
+29%
17.3 MB/s -29%
Read
Peak Sequential Read Speed
515 MB/s Slightly faster peak read speed.
+6%
484 MB/s -6%
Write
Peak Sequential Write Speed
493 MB/s Much faster peak write speed.
+46%
338 MB/s -46%
4K Read
Peak 4K Random Read Speed
36.3 MB/s Much faster peak random read.
+30%
27.9 MB/s -30%
4K Write
Peak 4K Random Write Speed
118 MB/s Much faster peak random write.
+37%
85.9 MB/s -37%
Mixed
Peak Sequential Mixed IO Speed
484 MB/s Much faster peak mixed IO speed.
+43%
339 MB/s -43%
4K Mixed
Peak 4K Random Mixed IO Speed
30.1 MB/s Faster peak random mixed IO.
+23%
24.5 MB/s -23%
Market Share
Based on 3,271,260 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.17 % -329% 0.73 % Hugely higher market share.
+329%
Value
Value For Money
76.7 % +2% 75 % -2%
User Rating
UBM User Rating
65 % +3% 63 % -3%
Price
Price (score)
$105 -10% $94 Slightly cheaper.
+10%
Age
Newest
37 Months -65% 13 Months Much more recent.
+65%
DQ Read
Peak 4K-64Thread Read Speed
365 MB/s Much faster peak deep queue read.
+59%
230 MB/s -59%
DQ Write
Peak 4K-64Thread Write Speed
322 MB/s Much faster peak deep queue write.
+46%
221 MB/s -46%
AS-SSD Total
AS-SSD Total Score
1,186 Pts Much stronger server IO.
+47%
807 Pts -47%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
65 MB/s Much faster peak deep queue mixed IO.
+62%
40.2 MB/s -62%
ADQ Read
Avg. 4K-64Thread Read Speed
193 MB/s Much faster deep queue read.
+48%
130 MB/s -48%
ADQ Write
Avg. 4K-64Thread Write Speed
178 MB/s Faster deep queue write.
+24%
143 MB/s -24%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
47.1 MB/s Much faster deep queue mixed IO.
+80%
26.2 MB/s -80%
Capacity
Capacity
240GB 275GB
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The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '14 SSDrivePro]

MORE DETAILS

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

Solid State Drive Rankings (Price vs Performance) July 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

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 i7-7700K $295Nvidia GTX 1070 $390Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $268AMD RX 480 $260Samsung 850 Pro 256GB $136
Intel Core i5-7600K $224Nvidia GTX 1060-6GB $239Samsung 850 Evo 500GB $165
HDDRAMUSB
Seagate Barracuda 1TB (2016) $50G.SKILL Trident Z DDR4 3200 C14 4x16GB $714SanDisk Extreme 64GB $34
Seagate Barracuda 3TB (2016) $83Corsair Vengeance LPX DDR4 3000 C15 2x8GB $132SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $44HyperX Fury DDR4 2133 C14 2x8GB $133SanDisk Ultra Fit 32GB $13
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