COMPARE
SSD
RANKINGS
TEST
YOUR SSD
ADD TO PC
BUILD
CrucialCT128MX100SSD1
$74
KingstonSV300S37A/120G
▲ 521,170 ▼
 $74 

Controller: Marvell 88SS9189. Flash Memory: Micron 16nm MLC. Release date: Q2 2014.

VS
▲ 545,433 ▼

Controller: LSI SandForce SF2281. Flash Memory: Toshiba 19nm Toggle Mode MLC. Release date: Q4 2012.

Effective Speed 
+42%
Real World Speed
Performance profile from 348,912 user samples
Benchmark your SSD here
9,892 User Benchmarks
Best Bench: 89% 42GB free
Worst Bench: 56% 119GB free
Poor: 56% Great: 89%
SPEED RANK: 566th / 1079
339,020 User Benchmarks
Best Bench: 73% 15GB free
Worst Bench: 30% 77GB free (System drive)
Poor: 30% Great: 73%
SPEED RANK: 874th / 1079
Effective Speed
Effective SSD Speed 		75.9 % Much faster effective speed.
+42% 		53.6 %
Average Score 
+41%
Read
Avg. Sequential Read Speed 		431 MB/s Hugely faster read speed.
+90% 		227 MB/s
Write
Avg. Sequential Write Speed 		179 MB/s Much faster write speed.
+47% 		122 MB/s
4K Read
Avg. 4K Random Read Speed 		26.6 MB/s Faster random read.
+16% 		22.9 MB/s
4K Write
Avg. 4K Random Write Speed 		87.1 MB/s Faster random write.
+18% 		73.9 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		217 MB/s Much faster mixed IO speed.
+40% 		155 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		35 MB/s Faster random mixed IO.
+19% 		29.4 MB/s
SusWrite
Avg. Sustained Write Speed 		139 MB/s Much faster sustained write speed.
+57% 		88.3 MB/s
Peak Score 
+16%
Read
Peak Sequential Read Speed 		473 MB/s Faster peak read speed.
+23% 		385 MB/s
Write
Peak Sequential Write Speed 		187 MB/s Faster peak write speed.
+22% 		153 MB/s
4K Read
Peak 4K Random Read Speed 		30.5 MB/s 32.1 MB/s Slightly faster peak random read.
+5%
4K Write
Peak 4K Random Write Speed 		121 MB/s Faster peak random write.
+12% 		108 MB/s
Mixed
Peak Sequential Mixed IO Speed 		233 MB/s Faster peak mixed IO speed.
+14% 		204 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		41.7 MB/s +1% 41.4 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		184 MB/s Much faster peak sustained write speed.
+45% 		127 MB/s
Value & Sentiment 
+468%
Market Share
Based on 76,170,725 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.19 % Insanely higher market share.
+1,800%
Value
Value For Money 		7.44 % 8.68 % Better value.
+17%
User Rating
UBM User Rating 		52 % 54 % +4%
Price
Price (score) 		$74 $36 Much cheaper.
+52%
Nice To Haves 
+55%
Age
Newest 		120 Months More recent.
+14% 		139 Months
DQ Read
Peak 4K-64Thread Read Speed 		316 MB/s Much faster peak deep queue read.
+62% 		195 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		186 MB/s Faster peak deep queue write.
+22% 		153 MB/s
AS-SSD Total
AS-SSD Total Score 		917 Pts Much stronger server IO.
+35% 		679 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		170 MB/s Faster peak deep queue mixed IO.
+28% 		133 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		286 MB/s Hugely faster deep queue read.
+183% 		101 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		159 MB/s Much faster deep queue write.
+35% 		118 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		151 MB/s Much faster deep queue mixed IO.
+65% 		91.6 MB/s
Specifications 
Capacity
Capacity 		128GB 120GB
Conclusion 
Average Bench 75.9%
Average Bench 53.6%
ADVERTISEMENT

The Crucial 128GB MX100 has the smallest capacity and is the slowest of the MX100 range. Comparing the 128GB and 256GB MX100s shows that the 256GB version has a 75% faster write speed. Within the MX100 range write speeds scale linearly with capacity, as a consequence, the 128GB version struggles to compete with similarly priced drives from other manufacturers. On the other hand, the 512GB version and to a lesser extent the 256GB version offer far better value for money. Overall the MX100 has an effective speed which is amongst the top 30% of 128GB drives so its not bad by any means but there are however both cheaper and faster alternatives available in the now extremely competitive 128GB SSD category. [Oct '14 SSDrivePro]

MORE DETAILS

The 120GB Kingston V300 has a performance profile that closely matches its 240GB sibling. Both drives utilize a Sandforce LSI controller and therefore demonstrate relative weakness in their write speeds. With burst sequential read/write speeds of 497/166 MBps and 4k burst read/write speeds of 30/97 MBps the 120GB V300 is amongst the slower SSDs I have seen. A concern I have with this drive is the relatively slow real world speeds our users have experienced. Most drives have average throughput rates that are around 75% of peak. Both this and the 240GB V300s, based on 130 samples, are averaging sequential read rates of around 240 MBps which is less than 50% of peak. It's not all bad news though because the V300's are priced extremely aggressively and as a result still offer decent value for money. [Feb '14 SSDrivePro]

MORE DETAILS

User Builds 
9,892
339,020
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) June 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]

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
Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
Why don’t PC brands endorse UserBenchmark?
Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
Why don’t youtubers promote UserBenchmark?
We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
Why does UserBenchmark have negative trustpilot reviews?
The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
Why is UserBenchmark popular with users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
CPUGPUSSD
Intel Core i5-12600K $169Nvidia RTX 4060 $293WD Black SN850X M.2 2TB $150
Intel Core i5-12400F $110Nvidia RTX 4060-Ti $385WD Black SN850X M.2 1TB $89
Intel Core i5-13600K $249Nvidia RTX 4070 $549Crucial T700 M.2 4TB $369
Today's hottest
Amazon Ebay
deals
If you buy something via a price link, UserBenchmark may earn a commission
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback