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CrucialCT240BX300SSD1
CrucialCT250MX500SSD1
▲ 5138 ▼

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

VS
▲ 61653 ▼

Controller: Silicon Motion SM2258. Flash Memory: Micron 3D TLC. Release date: Q4 2017.

Effective Speed 
+7%
Real World Speed
Performance profile from 84,446 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
77,177 User Benchmarks
Best Bench: 123% 74GB free
Worst Bench: 73% 64GB free (System drive)
Poor: 73% Great: 123%
SPEED RANK: 252nd / 1072
Effective Speed
Effective SSD Speed 		94.5 % 101 % Slightly faster effective speed.
+7%
Average Score 
+6%
Read
Avg. Sequential Read Speed 		473 MB/s +5% 451 MB/s
Write
Avg. Sequential Write Speed 		407 MB/s +3% 394 MB/s
4K Read
Avg. 4K Random Read Speed 		27.3 MB/s 33.7 MB/s Faster random read.
+23%
4K Write
Avg. 4K Random Write Speed 		80.2 MB/s 83.4 MB/s +4%
Mixed
Avg. Sequential Mixed IO Speed 		365 MB/s 386 MB/s Slightly faster mixed IO speed.
+6%
4K Mixed
Avg. 4K Random Mixed IO Speed 		39 MB/s 45.4 MB/s Faster random mixed IO.
+16%
SusWrite
Avg. Sustained Write Speed 		355 MB/s +1% 352 MB/s
Peak Score 
+7%
Read
Peak Sequential Read Speed 		514 MB/s 514 MB/s
Write
Peak Sequential Write Speed 		473 MB/s +2% 466 MB/s
4K Read
Peak 4K Random Read Speed 		32.9 MB/s 42.6 MB/s Faster peak random read.
+29%
4K Write
Peak 4K Random Write Speed 		118 MB/s +2% 116 MB/s
Mixed
Peak Sequential Mixed IO Speed 		443 MB/s 450 MB/s +2%
4K Mixed
Peak 4K Random Mixed IO Speed 		49.7 MB/s 58.3 MB/s Faster peak random mixed IO.
+17%
SusWrite
Peak Sequential Sustained Write 60s Average 		446 MB/s 458 MB/s +3%
Value & Sentiment 
+286%
Market Share
Based on 75,664,780 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.12 % Insanely higher market share.
+1,100%
Value
Value For Money 		22.3 % 26 % Better value.
+17%
User Rating
UBM User Rating 		51 % 61 % More popular.
+20%
Price
Price (score) 		$43 $40 Slightly cheaper.
+7%
Nice To Haves 
+5%
Age
Newest 		80 Months 76 Months +5%
DQ Read
Peak 4K-64Thread Read Speed 		316 MB/s 384 MB/s Faster peak deep queue read.
+22%
DQ Write
Peak 4K-64Thread Write Speed 		363 MB/s +1% 359 MB/s
AS-SSD Total
AS-SSD Total Score 		1,143 Pts 1,258 Pts Stronger server IO.
+10%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		299 MB/s Slightly faster peak deep queue mixed IO.
+8% 		278 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		280 MB/s 329 MB/s Faster deep queue read.
+18%
ADQ Write
Avg. 4K-64Thread Write Speed 		279 MB/s 294 MB/s Slightly faster deep queue write.
+5%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		243 MB/s Faster deep queue mixed IO.
+11% 		219 MB/s
Specifications 
Capacity
Capacity 		240GB 250GB
Conclusion 
Average Bench 94.5%
Average Bench 101%
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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 MX500 is Crucial’s current flagship consumer SATA SSD featuring their latest second generation 64-layer 3D TLC NAND. It’s available in 250 GB, 500 GB, 1 TB and 2 TB capacities in a 2.5-inch form factor. All but the 2 TB version will also be available in M.2 (2280) form in the future. The MX500 features a Silicon Motion SM2258 controller which is a change from the Marvell 88SS1074 controller featured in the MX300 (it’s nearly two year old predecessor). Performance is around 30% better than on the MX300 which currently retails at the same price. The MX500 has an SLC cache which increases with drive capacity. Consequently, the larger capacities are better able to sustain high sequential write speeds. The 250 GB version has 250MB of SLC cache, the 500 GB has 512 MB, the 1 TB has 1 GB and the 2 TB has 2 GB. Extended sustained write performance tests show that even though speed does drop off after the cache has been exhausted, it is still maintained at very respectable levels. The MX500’s five year warranty is in line with Samsung’s 850 Evo and exceeds it in terms of endurance (just 75 TBW for the 250 GB 850 Evo versus 100 TBW for the 250 GB MX500). It doesn’t quite match up to the Samsung’s 850 Evo’s performance (effective speed 8% slower), however at current prices it is about 20% cheaper, and on balance offers better value for money. [Mar '18 SSDrivePro]

MORE DETAILS

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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]

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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.
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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.

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 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?
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Solid State Drives
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 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
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