COMPARE
SSD
RANKINGS
TEST
YOUR SSD
ADD TO PC
BUILD
CrucialCT240BX300SSD1
SanDiskSDSSDXPS-240G
▲ 5138 ▼

Controller: Silicon Motion SM2258. Flash Memory: Micron 3D MLC. Release date: Q3 2017.

VS
▲ 544,013 ▼

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC. Release date: Q2 2014.

Effective Speed 
+3%
Real World Speed
Performance profile from 18,131 user samples
Benchmark your SSD here
7,269 User Benchmarks
Best Bench: 114% 223GB free
Worst Bench: 65% 75GB free (System drive)
Poor: 65% Great: 114%
SPEED RANK: 283rd / 1072
10,862 User Benchmarks
Best Bench: 114% 83GB free (System drive)
Worst Bench: 65% 20GB free (System drive)
Poor: 65% Great: 114%
SPEED RANK: 308th / 1072
Effective Speed
Effective SSD Speed 		94.5 % +3% 91.7 %
Average Score 
+9%
Read
Avg. Sequential Read Speed 		473 MB/s +4% 455 MB/s
Write
Avg. Sequential Write Speed 		407 MB/s +0% 406 MB/s
4K Read
Avg. 4K Random Read Speed 		27.3 MB/s 28.9 MB/s Slightly faster random read.
+6%
4K Write
Avg. 4K Random Write Speed 		80.2 MB/s +5% 76.5 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		365 MB/s Much faster mixed IO speed.
+41% 		258 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		39 MB/s Faster random mixed IO.
+17% 		33.4 MB/s
SusWrite
Avg. Sustained Write Speed 		355 MB/s +1% 350 MB/s
Peak Score 
+7%
Read
Peak Sequential Read Speed 		514 MB/s +1% 509 MB/s
Write
Peak Sequential Write Speed 		473 MB/s 479 MB/s +1%
4K Read
Peak 4K Random Read Speed 		32.9 MB/s 35.6 MB/s Slightly faster peak random read.
+8%
4K Write
Peak 4K Random Write Speed 		118 MB/s +4% 113 MB/s
Mixed
Peak Sequential Mixed IO Speed 		443 MB/s Much faster peak mixed IO speed.
+40% 		316 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		49.7 MB/s Faster peak random mixed IO.
+17% 		42.4 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		446 MB/s 480 MB/s Slightly faster peak sustained write speed.
+8%
Value & Sentiment 
+∞%
Market Share
Based on 75,669,433 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		22.3 % Much better value.
+63% 		13.7 %
User Rating
UBM User Rating 		51 % 54 % Slightly more popular.
+6%
Price
Price (score) 		$43 Much cheaper.
+46% 		$79
Nice To Haves 
+18%
Age
Newest 		80 Months Much more recent.
+32% 		118 Months
DQ Read
Peak 4K-64Thread Read Speed 		316 MB/s 376 MB/s Faster peak deep queue read.
+19%
DQ Write
Peak 4K-64Thread Write Speed 		363 MB/s Slightly faster peak deep queue write.
+6% 		343 MB/s
AS-SSD Total
AS-SSD Total Score 		1,143 Pts 1,214 Pts Slightly stronger server IO.
+6%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		299 MB/s Hugely faster peak deep queue mixed IO.
+82% 		164 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		280 MB/s 325 MB/s Faster deep queue read.
+16%
ADQ Write
Avg. 4K-64Thread Write Speed 		279 MB/s +4% 267 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		243 MB/s Much faster deep queue mixed IO.
+64% 		148 MB/s
Specifications 
Capacity
Capacity 		240GB 240GB
Conclusion 
Average Bench 94.5%
Average Bench 91.7%
ADVERTISEMENT

Crucial’s BX300 SSD is a 3D MLC entry level SSD, with debut pricing in line with the Samsung's 850 Evo, the current market leader. The BX300 is one of the faster consumer SSDs available, with a 2% performance improvement over Crucial’s older MLC based MX200 and a 25% performance improvement over the TLC based MX300 which are both from Crucial’s more expensive MX product line. MLC NAND offers more consistent performance and has higher endurance than TLC NAND. Although Samsung’s 850 Evo (which is based on proprietary TLC V-NAND) has a 10% effective speed advantage over the BX300 the BX300 wins on write consistency. The 240GB BX300 has a three year warranty or 80 Terabytes Written (TBW) compared to five years or 75 (TBW) for the 250 GB 850 Evo. This makes for an interesting choice between the BX300 and the 850 Evo. Each model has an SLC cache which is proportional to its capacity, as a result the larger capacities offer better performance. The 120 GB BX300 has a 4 GB SLC cache, the 240 GB has 8 GB and the 480 GB has 16 GB. SLC caches improve burst write performance beyond the already respectable MLC write performance. Unfortunately, at least for now, the BX300 only comes in modest capacities, with the largest being 480 GB. For write consistency, thanks to its MLC NAND, the BX300 punches well above its price point. [Nov '17 SSDrivePro]

MORE DETAILS

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

User Builds 
7,269
10,862
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Solid State Drive Rankings (Price vs Performance) April 2024 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]

ADVERTISEMENT

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 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 value for money upgrades.

UserBenchmark of the month

Gaming Desktop ProGaming

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
  • - SkillBench (space shooter) tests user input accuracy
  • - 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

 Frequently Asked Questions

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
How is the AS SSD write score calculated?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $182Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
If you make a purchase via one of these links, our site may earn a commission
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback