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CrucialCT250MX500SSD1
AdataASX900S3-256GM-C
▲ 61653 ▼

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

VS
▲ 531,260 ▼

Controller: LSI SandForce SF2281VB1-SDC. Flash Memory: Intel Micron Synchronous 25nm MLC. Release date: Q1 2012.

Effective Speed 
+32%
Real World Speed
Performance profile from 83,903 user samples
Benchmark your SSD here
77,177 User Benchmarks
Best Bench: 123% 74GB free
Worst Bench: 73% 64GB free (System drive)
Poor: 73% Great: 123%
SPEED RANK: 252nd / 1072
6,726 User Benchmarks
Best Bench: 90% 238GB free
Worst Bench: 58% 1GB free
Poor: 58% Great: 90%
SPEED RANK: 542nd / 1072
Effective Speed
Effective SSD Speed 		101 % Much faster effective speed.
+32% 		76.6 %
Average Score 
+37%
Read
Avg. Sequential Read Speed 		451 MB/s Faster read speed.
+23% 		368 MB/s
Write
Avg. Sequential Write Speed 		394 MB/s Much faster write speed.
+54% 		256 MB/s
4K Read
Avg. 4K Random Read Speed 		33.7 MB/s Faster random read.
+19% 		28.3 MB/s
4K Write
Avg. 4K Random Write Speed 		83.4 MB/s +5% 79.7 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		386 MB/s Much faster mixed IO speed.
+43% 		270 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		45.4 MB/s Faster random mixed IO.
+29% 		35.2 MB/s
SusWrite
Avg. Sustained Write Speed 		352 MB/s Hugely faster sustained write speed.
+85% 		190 MB/s
Peak Score 
+40%
Read
Peak Sequential Read Speed 		514 MB/s Faster peak read speed.
+22% 		423 MB/s
Write
Peak Sequential Write Speed 		466 MB/s Much faster peak write speed.
+56% 		298 MB/s
4K Read
Peak 4K Random Read Speed 		42.6 MB/s Faster peak random read.
+23% 		34.7 MB/s
4K Write
Peak 4K Random Write Speed 		116 MB/s +5% 111 MB/s
Mixed
Peak Sequential Mixed IO Speed 		450 MB/s Much faster peak mixed IO speed.
+49% 		302 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		58.3 MB/s Much faster peak random mixed IO.
+35% 		43.3 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		458 MB/s Hugely faster peak sustained write speed.
+94% 		236 MB/s
Value & Sentiment 
+466%
Market Share
Based on 75,652,597 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.16 % Insanely higher market share.
+1,500% 		0.01 %
Value
Value For Money 		26 % Hugely better value.
+273% 		6.96 %
User Rating
UBM User Rating 		61 % More popular.
+15% 		53 %
Price
Price (score) 		$40 Much cheaper.
+76% 		$164
Nice To Haves 
+29%
Age
Newest 		75 Months Much more recent.
+48% 		145 Months
DQ Read
Peak 4K-64Thread Read Speed 		384 MB/s Faster peak deep queue read.
+29% 		298 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		359 MB/s Much faster peak deep queue write.
+36% 		264 MB/s
AS-SSD Total
AS-SSD Total Score 		1,258 Pts Stronger server IO.
+29% 		978 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		278 MB/s Slightly faster peak deep queue mixed IO.
+9% 		256 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		329 MB/s Much faster deep queue read.
+34% 		245 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		294 MB/s Much faster deep queue write.
+34% 		219 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		219 MB/s Faster deep queue mixed IO.
+13% 		194 MB/s
Specifications 
Capacity
Capacity 		250GB 256GB
Conclusion 
Average Bench 101%
Average Bench 76.6%
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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

The SX900 and SX910 are both Sandforce 2881 based SSDs from Adata. The only difference between them is their warranty period: 5 years for the SX910 vs 3 years for the SX900. Both drives utilize Intel-Micron 25Nm MLC so the differences must be at a "sub-atomic" level, or at least beyond the scope of the specs. Once again as with all Sandforce 2881 based drives performance is skewed in favour of reads over writes. With a peak sequential read of 510 MB/s and corresponding sequential write of 309 MB/s the SX series does not break any records but, like all SSDs, they do offer speeds way in excess of mechanical hard drives. Overall performance lags the SSD group leaders by around 40% and there are far faster, cheaper and newer (non-Sandforce) alternatives such as the Samsung 840 Evo or the Sandisk Ultra Plus available. [Jan '14 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.
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.

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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?
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ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia 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) $35Corsair 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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