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CrucialCT064M4SSD2
SamsungMZ-7PD128BW
▲ 503 ▼

Controller: Marvell 88SS9174-BLD2. Flash Memory: Micron Synchronous 25nm MLC. Release date ≤ Q4 2013.

VS
▲ 542,763 ▼

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC. Release date: Q4 2012.

Effective Speed 
+64%
Real World Speed
Performance profile from 42,178 user samples
Benchmark your SSD here
7,336 User Benchmarks
Best Bench: 65% 59GB free
Worst Bench: 40% 23GB free (System drive)
Poor: 40% Great: 65%
SPEED RANK: 857th / 1072
34,842 User Benchmarks
Best Bench: 110% 62GB free
Worst Bench: 62% 119GB free
Poor: 62% Great: 110%
SPEED RANK: 336th / 1072
Effective Speed
Effective SSD Speed 		54.5 % 89.5 % Much faster effective speed.
+64%
Average Score 
+102%
Read
Avg. Sequential Read Speed 		444 MB/s 444 MB/s
Write
Avg. Sequential Write Speed 		105 MB/s 336 MB/s Hugely faster write speed.
+220%
4K Read
Avg. 4K Random Read Speed 		24.1 MB/s 30.5 MB/s Faster random read.
+27%
4K Write
Avg. 4K Random Write Speed 		62.2 MB/s 81.6 MB/s Much faster random write.
+31%
Mixed
Avg. Sequential Mixed IO Speed 		152 MB/s 268 MB/s Much faster mixed IO speed.
+76%
4K Mixed
Avg. 4K Random Mixed IO Speed 		14.7 MB/s 35.9 MB/s Hugely faster random mixed IO.
+144%
SusWrite
Avg. Sustained Write Speed 		91.1 MB/s 286 MB/s Hugely faster sustained write speed.
+214%
Peak Score 
+130%
Read
Peak Sequential Read Speed 		500 MB/s +1% 497 MB/s
Write
Peak Sequential Write Speed 		111 MB/s 445 MB/s Hugely faster peak write speed.
+301%
4K Read
Peak 4K Random Read Speed 		28.8 MB/s 36.3 MB/s Faster peak random read.
+26%
4K Write
Peak 4K Random Write Speed 		83.2 MB/s 113 MB/s Much faster peak random write.
+36%
Mixed
Peak Sequential Mixed IO Speed 		168 MB/s 331 MB/s Hugely faster peak mixed IO speed.
+97%
4K Mixed
Peak 4K Random Mixed IO Speed 		17.8 MB/s 44.1 MB/s Hugely faster peak random mixed IO.
+148%
SusWrite
Peak Sequential Sustained Write 60s Average 		109 MB/s 440 MB/s Hugely faster peak sustained write speed.
+304%
Value & Sentiment 
+∞%
Market Share
Based on 75,657,877 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.01 % Insanely higher market share.
+∞%
Value
Value For Money 		2.7 % 5.17 % Hugely better value.
+91%
User Rating
UBM User Rating 		50 % 54 % Slightly more popular.
+8%
Price
Price (score) 		$92 Much cheaper.
+39% 		$150
Nice To Haves 
+138%
Age
Newest 		124+ Months More recent.
+10% 		138 Months
DQ Read
Peak 4K-64Thread Read Speed 		285 MB/s 376 MB/s Much faster peak deep queue read.
+32%
DQ Write
Peak 4K-64Thread Write Speed 		108 MB/s 330 MB/s Hugely faster peak deep queue write.
+206%
AS-SSD Total
AS-SSD Total Score 		743 Pts 1,196 Pts Much stronger server IO.
+61%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		42.5 MB/s 155 MB/s Hugely faster peak deep queue mixed IO.
+265%
ADQ Read
Avg. 4K-64Thread Read Speed 		165 MB/s 332 MB/s Hugely faster deep queue read.
+101%
ADQ Write
Avg. 4K-64Thread Write Speed 		89.8 MB/s 245 MB/s Hugely faster deep queue write.
+173%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		33.5 MB/s 126 MB/s Hugely faster deep queue mixed IO.
+276%
Specifications 
Capacity
Capacity 		64GB 128GB
Conclusion 
Average Bench 54.5%
Average Bench 89.5%
ADVERTISEMENT

The 128GB 840 Pro is a rock solid performer. On release, nearly a year and a half ago, the Pro smashed several speed records. Today, with sequential read/write speeds of 519/438 MBps, the Pro is still one of the fastest SSDs available. One of the Pro's top competitors is Samsungs own, newer 840 Evo. Looking at a raw synthetic speed comparison of the 128GB Pro and Evo is a little misleading. On the face of it the Pro only has a marginal lead over the Evo. This due to the fact that the Evo can only maintain its burst write speed for transfers of up to 3GB, the size of its SLC cache. The Pro on the other hand can sustain higher throughputs indefinitely. The Pro also utilizes MLC which is rated for far more erase cycles than the TLC used in the Evo. Server IO is often continuous and would quickly exhaust the 3GB cache on the Evo but for typical consumer use the Evo will remain within the SLC cache most of the time. [Feb '14 SSDrivePro]

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User Builds 
7,336
34,842
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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.

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
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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