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SamsungMZ-7PD128BW
SamsungMZ-76E250B
▲ 542,763 ▼

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

VS
▲ 57979 ▼

Controller: Samsung MJX. Memory: Samsung 64 layer TLC V-NAND. Release date: Q1 2018.

Effective Speed 
+16%
Real World Speed
Performance profile from 331,656 user samples
Benchmark your SSD here
34,842 User Benchmarks
Best Bench: 110% 62GB free
Worst Bench: 62% 119GB free
Poor: 62% Great: 110%
SPEED RANK: 336th / 1072
296,814 User Benchmarks
Best Bench: 128% 34GB free
Worst Bench: 75% 64GB free (System drive)
Poor: 75% Great: 128%
SPEED RANK: 242nd / 1072
Effective Speed
Effective SSD Speed 		89.5 % 104 % Faster effective speed.
+16%
Average Score 
+19%
Read
Avg. Sequential Read Speed 		444 MB/s 480 MB/s Slightly faster read speed.
+8%
Write
Avg. Sequential Write Speed 		336 MB/s 381 MB/s Faster write speed.
+13%
4K Read
Avg. 4K Random Read Speed 		30.5 MB/s 38.1 MB/s Faster random read.
+25%
4K Write
Avg. 4K Random Write Speed 		81.6 MB/s 95.7 MB/s Faster random write.
+17%
Mixed
Avg. Sequential Mixed IO Speed 		268 MB/s 363 MB/s Much faster mixed IO speed.
+35%
4K Mixed
Avg. 4K Random Mixed IO Speed 		35.9 MB/s 47.9 MB/s Much faster random mixed IO.
+33%
SusWrite
Avg. Sustained Write Speed 		286 MB/s +0% 285 MB/s
Peak Score 
+20%
Read
Peak Sequential Read Speed 		497 MB/s 517 MB/s +4%
Write
Peak Sequential Write Speed 		445 MB/s 492 MB/s Faster peak write speed.
+11%
4K Read
Peak 4K Random Read Speed 		36.3 MB/s 50 MB/s Much faster peak random read.
+38%
4K Write
Peak 4K Random Write Speed 		113 MB/s 126 MB/s Faster peak random write.
+12%
Mixed
Peak Sequential Mixed IO Speed 		331 MB/s 466 MB/s Much faster peak mixed IO speed.
+41%
4K Mixed
Peak 4K Random Mixed IO Speed 		44.1 MB/s 66.5 MB/s Much faster peak random mixed IO.
+51%
SusWrite
Peak Sequential Sustained Write 60s Average 		440 MB/s Faster peak sustained write speed.
+16% 		379 MB/s
Value & Sentiment 
+1,098%
Market Share
Based on 75,636,994 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.41 % Insanely higher market share.
+4,000%
Value
Value For Money 		5.17 % 21.9 % Hugely better value.
+323%
User Rating
UBM User Rating 		54 % 57 % Slightly more popular.
+6%
Price
Price (score) 		$150 $52 Much cheaper.
+65%
Nice To Haves 
+44%
Age
Newest 		138 Months 74 Months Much more recent.
+46%
DQ Read
Peak 4K-64Thread Read Speed 		376 MB/s 389 MB/s +3%
DQ Write
Peak 4K-64Thread Write Speed 		330 MB/s 362 MB/s Slightly faster peak deep queue write.
+10%
AS-SSD Total
AS-SSD Total Score 		1,196 Pts 1297 Pts Slightly stronger server IO.
+8%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		155 MB/s 371 MB/s Hugely faster peak deep queue mixed IO.
+139%
ADQ Read
Avg. 4K-64Thread Read Speed 		332 MB/s 357 MB/s Slightly faster deep queue read.
+8%
ADQ Write
Avg. 4K-64Thread Write Speed 		245 MB/s 291 MB/s Faster deep queue write.
+19%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		126 MB/s 278 MB/s Hugely faster deep queue mixed IO.
+121%
Specifications 
Capacity
Capacity 		128GB 250GB
Conclusion 
Average Bench 89.5%
Average Bench 104%
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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]

MORE DETAILS

The 860 Evo is the latest mainstream SATA SSD from Samsung. The 2.5-inch version of the 860 Evo will be available in several capacities ranging from 250 GB to a staggering 4TB. It’s also available in the slimmer M.2 and mSATA form factors. The 860 Evo demonstrates marginally reduced performance compared to its popular, but now three year old predecessor, the 850 Evo. In a head to head comparison the 860 looses by a very modest 6% in terms of effective speed. The 860 Evo is based on a refinement of Samsung’s consumer grade TLC V-NAND, this time featuring 256Gb and 512 Gb 64 layer V-NAND and it also features a new "MJX" controller. The 250 GB version can reach sequential write speeds of up to 520 MB/s, dropping to 300 MB/s once the SLC cache is exhausted (the 250 GB version has a 12 GB SLC write cache). Peak sequential read speeds of 560 MB/s are achievable across the different capacities. The 250GB version has a 512 MB LPDDR4 DRAM cache. All capacities have a five year warranty, but as a testament to the enhanced reliability of this new technology, the warrantied terabytes written (TBW) has doubled from 75 TBW to 150 TBW for the 250 GB 860 Evo. [Jan '18 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?
How is the AS SSD read score calculated?
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 Best User Rated
The Best.
CPUGPUSSD
Intel Core i5-13600K $273Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $186Nvidia 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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