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CrucialCT120BX100SSD1
CrucialCT275MX300SSD1
▲ 52340 ▼

Controller: Silicon Motion SM2246EN. Flash Memory: Micron 16nm MLC. Release date: Q1 2015.

VS
▲ 552,236 ▼

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

Effective Speed 
+4%
Real World Speed
Performance profile from 74,472 user samples
Benchmark your SSD here
6,931 User Benchmarks
Best Bench: 89% 0GB free (System drive)
Worst Bench: 56% 112GB free
Poor: 56% Great: 89%
SPEED RANK: 559th / 1080
67,541 User Benchmarks
Best Bench: 95% 67GB free
Worst Bench: 53% 38GB free (System drive)
Poor: 53% Great: 95%
SPEED RANK: 500th / 1080
Effective Speed
Effective SSD Speed 		76.2 % 79.4 % +4%
Average Score 
+27%
Read
Avg. Sequential Read Speed 		475 MB/s Slightly faster read speed.
+10% 		433 MB/s
Write
Avg. Sequential Write Speed 		181 MB/s 380 MB/s Hugely faster write speed.
+110%
4K Read
Avg. 4K Random Read Speed 		26.3 MB/s Slightly faster random read.
+9% 		24.2 MB/s
4K Write
Avg. 4K Random Write Speed 		76.4 MB/s 84.7 MB/s Faster random write.
+11%
Mixed
Avg. Sequential Mixed IO Speed 		226 MB/s 339 MB/s Much faster mixed IO speed.
+50%
4K Mixed
Avg. 4K Random Mixed IO Speed 		34.3 MB/s +1% 33.9 MB/s
SusWrite
Avg. Sustained Write Speed 		158 MB/s 217 MB/s Much faster sustained write speed.
+37%
Peak Score 
+36%
Read
Peak Sequential Read Speed 		515 MB/s Slightly faster peak read speed.
+9% 		472 MB/s
Write
Peak Sequential Write Speed 		188 MB/s 478 MB/s Hugely faster peak write speed.
+154%
4K Read
Peak 4K Random Read Speed 		31 MB/s Slightly faster peak random read.
+10% 		28.2 MB/s
4K Write
Peak 4K Random Write Speed 		110 MB/s 117 MB/s Slightly faster peak random write.
+6%
Mixed
Peak Sequential Mixed IO Speed 		246 MB/s 402 MB/s Much faster peak mixed IO speed.
+63%
4K Mixed
Peak 4K Random Mixed IO Speed 		42.6 MB/s +3% 41.4 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		185 MB/s 273 MB/s Much faster peak sustained write speed.
+48%
Value & Sentiment 
+186%
Market Share
Based on 77,606,877 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.06 % Hugely higher market share.
+500%
Value
Value For Money 		7.42 % 21.9 % Hugely better value.
+195%
User Rating
UBM User Rating 		52 % 55 % Slightly more popular.
+6%
Price
Price (score) 		$70 $40 Much cheaper.
+43%
Nice To Haves 
+33%
Age
Newest 		118 Months 101 Months More recent.
+14%
DQ Read
Peak 4K-64Thread Read Speed 		263 MB/s Faster peak deep queue read.
+11% 		236 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		188 MB/s 326 MB/s Much faster peak deep queue write.
+73%
AS-SSD Total
AS-SSD Total Score 		834 Pts 972 Pts Stronger server IO.
+17%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		174 MB/s 306 MB/s Much faster peak deep queue mixed IO.
+76%
ADQ Read
Avg. 4K-64Thread Read Speed 		245 MB/s Faster deep queue read.
+13% 		216 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		171 MB/s 257 MB/s Much faster deep queue write.
+50%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		154 MB/s 245 MB/s Much faster deep queue mixed IO.
+59%
Specifications 
Capacity
Capacity 		120GB 275GB
Conclusion 
Average Bench 76.2%
Average Bench 79.4%

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]

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Solid State Drive Rankings (Price vs Performance) November 2024 SSD Rankings

Welcome to our 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]

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.
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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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  • - Reports are generated and presented on userbenchmark.com
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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?
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 »

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Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
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Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
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We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
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The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
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Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
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Intel Core i5-13600K $210Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $125
Intel Core i5-12600K $155Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $330
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