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CrucialCT275MX300SSD1
CrucialCT120BX100SSD1
▲ 552,236 ▼

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

VS
▲ 52340 ▼

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

Effective Speed 
+4%
Real World Speed
Performance profile from 74,472 user samples
Benchmark your SSD here
67,541 User Benchmarks
Best Bench: 95% 67GB free
Worst Bench: 53% 38GB free (System drive)
Poor: 53% Great: 95%
SPEED RANK: 500th / 1080
6,931 User Benchmarks
Best Bench: 89% 0GB free (System drive)
Worst Bench: 56% 112GB free
Poor: 56% Great: 89%
SPEED RANK: 559th / 1080
Effective Speed
Effective SSD Speed 		79.4 % +4% 76.2 %
Average Score 
+27%
Read
Avg. Sequential Read Speed 		433 MB/s 475 MB/s Slightly faster read speed.
+10%
Write
Avg. Sequential Write Speed 		380 MB/s Hugely faster write speed.
+110% 		181 MB/s
4K Read
Avg. 4K Random Read Speed 		24.2 MB/s 26.3 MB/s Slightly faster random read.
+9%
4K Write
Avg. 4K Random Write Speed 		84.7 MB/s Faster random write.
+11% 		76.4 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		339 MB/s Much faster mixed IO speed.
+50% 		226 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		33.9 MB/s 34.3 MB/s +1%
SusWrite
Avg. Sustained Write Speed 		217 MB/s Much faster sustained write speed.
+37% 		158 MB/s
Peak Score 
+36%
Read
Peak Sequential Read Speed 		472 MB/s 515 MB/s Slightly faster peak read speed.
+9%
Write
Peak Sequential Write Speed 		478 MB/s Hugely faster peak write speed.
+154% 		188 MB/s
4K Read
Peak 4K Random Read Speed 		28.2 MB/s 31 MB/s Slightly faster peak random read.
+10%
4K Write
Peak 4K Random Write Speed 		117 MB/s Slightly faster peak random write.
+6% 		110 MB/s
Mixed
Peak Sequential Mixed IO Speed 		402 MB/s Much faster peak mixed IO speed.
+63% 		246 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		41.4 MB/s 42.6 MB/s +3%
SusWrite
Peak Sequential Sustained Write 60s Average 		273 MB/s Much faster peak sustained write speed.
+48% 		185 MB/s
Value & Sentiment 
+186%
Market Share
Based on 77,609,939 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.06 % Hugely higher market share.
+500% 		0.01 %
Value
Value For Money 		21.9 % Hugely better value.
+195% 		7.42 %
User Rating
UBM User Rating 		55 % Slightly more popular.
+6% 		52 %
Price
Price (score) 		$40 Much cheaper.
+43% 		$70
Nice To Haves 
+33%
Age
Newest 		101 Months More recent.
+14% 		118 Months
DQ Read
Peak 4K-64Thread Read Speed 		236 MB/s 263 MB/s Faster peak deep queue read.
+11%
DQ Write
Peak 4K-64Thread Write Speed 		326 MB/s Much faster peak deep queue write.
+73% 		188 MB/s
AS-SSD Total
AS-SSD Total Score 		972 Pts Stronger server IO.
+17% 		834 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		306 MB/s Much faster peak deep queue mixed IO.
+76% 		174 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		216 MB/s 245 MB/s Faster deep queue read.
+13%
ADQ Write
Avg. 4K-64Thread Write Speed 		257 MB/s Much faster deep queue write.
+50% 		171 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		245 MB/s Much faster deep queue mixed IO.
+59% 		154 MB/s
Specifications 
Capacity
Capacity 		275GB 120GB
Conclusion 
Average Bench 79.4%
Average Bench 76.2%

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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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]

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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?
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How is the AS SSD total score calculated?
ALL FAQs »

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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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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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