SanDiskSD8SB8U-512G-1122
CrucialCT275MX300SSD1

Release date ≈ Q1 2016.

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

Real World Speed
Performance profile from 48,880 user samples
5,070 User Benchmarks
Best Bench: 103% 304GB free
Worst Bench: 61% 346GB free (System drive)
Poor: 61% Great: 103%
SPEED RANK: 412th / 1037
43,810 User Benchmarks
Best Bench: 94% 255GB free
Worst Bench: 54% 256GB free
Poor: 54% Great: 94%
SPEED RANK: 461st / 1037
Effective Speed
Effective SSD Speed
82.3 % +4% 79.5 %
Read
Avg. Sequential Read Speed
445 MB/s +2% 435 MB/s
Write
Avg. Sequential Write Speed
377 MB/s 390 MB/s +3%
4K Read
Avg. 4K Random Read Speed
27.4 MB/s Faster random read.
+13%
24.2 MB/s
4K Write
Avg. 4K Random Write Speed
70.8 MB/s 83.8 MB/s Faster random write.
+18%
Mixed
Avg. Sequential Mixed IO Speed
258 MB/s 341 MB/s Much faster mixed IO speed.
+32%
4K Mixed
Avg. 4K Random Mixed IO Speed
34.5 MB/s +2% 33.7 MB/s
SusWrite
Avg. Sustained Write Speed
226 MB/s +3% 220 MB/s
Read
Peak Sequential Read Speed
501 MB/s Slightly faster peak read speed.
+6%
472 MB/s
Write
Peak Sequential Write Speed
471 MB/s 479 MB/s +2%
4K Read
Peak 4K Random Read Speed
37.4 MB/s Much faster peak random read.
+32%
28.3 MB/s
4K Write
Peak 4K Random Write Speed
115 MB/s 115 MB/s
Mixed
Peak Sequential Mixed IO Speed
341 MB/s 401 MB/s Faster peak mixed IO speed.
+18%
4K Mixed
Peak 4K Random Mixed IO Speed
49.1 MB/s Faster peak random mixed IO.
+19%
41.3 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
303 MB/s Faster peak sustained write speed.
+14%
266 MB/s
Market Share
Based on 31,577,163 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.02 % 0.15 % Hugely higher market share.
+650%
Value
Value For Money
10.8 % Much better value.
+46%
7.41 %
User Rating
UBM User Rating
50 % 68 % Much more popular.
+36%
Price
Price (score)
$200 $170 Cheaper.
+15%
Age
Newest
55+ Months 51 Months Slightly more recent.
+7%
DQ Read
Peak 4K-64Thread Read Speed
369 MB/s Much faster peak deep queue read.
+56%
237 MB/s
DQ Write
Peak 4K-64Thread Write Speed
287 MB/s 326 MB/s Faster peak deep queue write.
+14%
AS-SSD Total
AS-SSD Total Score
1,151 Pts Stronger server IO.
+18%
972 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
235 MB/s 306 MB/s Much faster peak deep queue mixed IO.
+30%
ADQ Read
Avg. 4K-64Thread Read Speed
323 MB/s Much faster deep queue read.
+50%
216 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
246 MB/s 263 MB/s Slightly faster deep queue write.
+7%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
199 MB/s 246 MB/s Faster deep queue mixed IO.
+24%
Capacity
Capacity
512GB 275GB
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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

Solid State Drive Rankings (Price vs Performance) September 2020 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
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Intel Core i5-9400F $140Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $300Nvidia RTX 2070S (Super) $510Samsung 860 Evo 250GB $42
HDDRAMUSB
Seagate Barracuda 1TB (2016) $35Corsair Vengeance LPX DDR4 3200 C16 2x8GB $66SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 32GB $30
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Extreme 16GB $28
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