CrucialCT275MX300SSD1
CrucialCT250BX100SSD1

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

Controller: Silicon Motion SM2246EN. Flash Memory: Micron 16nm MLC.

Real World Speed
Performance profile from 17,532 user samples
9,194 User Benchmarks
Best Bench: 82% 143GB free
Worst Bench: 48% 109GB free
Poor: 48% Great: 82%
SPEED RANK: 351st / 862
8,338 User Benchmarks
Best Bench: 100% 63GB free
Worst Bench: 64% 232GB free
Poor: 64% Great: 100%
SPEED RANK: 128th / 862
Effective Speed
Effective SSD Speed
68.5 % -24% 85.3 % Faster effective speed.
+24%
Read
Avg. Sequential Read Speed
465 MB/s -8% 501 MB/s Slightly faster read speed.
+8%
Write
Avg. Sequential Write Speed
299 MB/s -19% 355 MB/s Faster write speed.
+19%
4K Read
Avg. 4K Random Read Speed
22.7 MB/s -11% 25.3 MB/s Slightly faster random read.
+11%
4K Write
Avg. 4K Random Write Speed
58.6 MB/s -36% 79.9 MB/s Much faster random write.
+36%
Mixed
Avg. Sequential Mixed IO Speed
308 MB/s -33% 410 MB/s Much faster mixed IO speed.
+33%
4K Mixed
Avg. 4K Random Mixed IO Speed
17 MB/s -64% 27.8 MB/s Much faster random mixed IO.
+64%
Read
Peak Sequential Read Speed
485 MB/s -8% 524 MB/s Slightly faster peak read speed.
+8%
Write
Peak Sequential Write Speed
338 MB/s -10% 371 MB/s Slightly faster peak write speed.
+10%
4K Read
Peak 4K Random Read Speed
27.8 MB/s -10% 30.6 MB/s Slightly faster peak random read.
+10%
4K Write
Peak 4K Random Write Speed
83.4 MB/s -37% 114 MB/s Much faster peak random write.
+37%
Mixed
Peak Sequential Mixed IO Speed
339 MB/s -27% 432 MB/s Faster peak mixed IO speed.
+27%
4K Mixed
Peak 4K Random Mixed IO Speed
24.4 MB/s -55% 37.8 MB/s Much faster peak random mixed IO.
+55%
Market Share
Based on 4,430,761 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.69 % Hugely higher market share.
+92%
0.36 % -92%
Value
Value For Money
83.6 % Much better value.
+42%
59 % -42%
User Rating
UBM User Rating
66 % Slightly more popular.
+6%
62 % -6%
Price
Price (score)
$80 Much cheaper.
+48%
$155 -48%
Age
Newest
17 Months Much more recent.
+50%
34 Months -50%
DQ Read
Peak 4K-64Thread Read Speed
230 MB/s -21% 278 MB/s Faster peak deep queue read.
+21%
DQ Write
Peak 4K-64Thread Write Speed
220 MB/s -43% 314 MB/s Much faster peak deep queue write.
+43%
AS-SSD Total
AS-SSD Total Score
803 Pts -26% 1,014 Pts Stronger server IO.
+26%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
40.4 MB/s -79% 72.4 MB/s Much faster peak deep queue mixed IO.
+79%
ADQ Read
Avg. 4K-64Thread Read Speed
128 MB/s -28% 164 MB/s Faster deep queue read.
+28%
ADQ Write
Avg. 4K-64Thread Write Speed
136 MB/s -56% 212 MB/s Much faster deep queue write.
+56%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
25.7 MB/s -90% 48.9 MB/s Hugely faster deep queue mixed IO.
+90%
Capacity
Capacity
275GB 250GB
ADVERTISEMENT

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 250GB Crucial BX100 SSD is the value orientated variant of Crucial's M range of SSDs. The BX100 uses the same NAND as its premium MX200 sibling but the BX100 uses a Silicon Motion controller as opposed to the Marvel controller found in the MX range. Feature wise the BX100 is missing SLC caching and there is no hardware encryption (so security frameworks such as windows Bitlocker will operate less efficiently). In terms of I/O performance the BX100 looks promising. Comparing the BX100 and MX100 shows that the newer BX100 may be faster than its predecessor but as yet there are insufficient user benchmarks to draw any definitive conclusions. The BX100 has only just started hitting the shelves so there's plenty of room for price reductions from its already reasonable price tag. I will revisit this review when I have more performance data for the BX100. [Jan '15 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) November 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 $288Nvidia GTX 1070 $410Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $285AMD RX 480 $240Samsung 850 Pro 256GB $110
Intel Core i5-7600K $200Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $189SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $55Corsair Vengeance LPX DDR4 3200 C16 2x8GB $195SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback