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SamsungMZ-75E120B
SamsungMZ-7KE256BW
▲ 584,587 ▼

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date: Q4 2014.

VS
▲ 5441,223 ▼

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND. Release date: Q3 2014.

Effective Speed 
+6%
Real World Speed
Performance profile from 211,153 user samples
Benchmark your SSD here
69,224 User Benchmarks
Best Bench: 115% 111GB free
Worst Bench: 64% 111GB free
Poor: 64% Great: 115%
SPEED RANK: 281st / 1080
141,929 User Benchmarks
Best Bench: 124% 238GB free
Worst Bench: 71% 71GB free (System drive)
Poor: 71% Great: 124%
SPEED RANK: 256th / 1080
Effective Speed
Effective SSD Speed 		96 % 102 % Slightly faster effective speed.
+6%
Average Score 
+9%
Read
Avg. Sequential Read Speed 		459 MB/s 469 MB/s +2%
Write
Avg. Sequential Write Speed 		431 MB/s Slightly faster write speed.
+9% 		396 MB/s
4K Read
Avg. 4K Random Read Speed 		38.9 MB/s Faster random read.
+15% 		33.9 MB/s
4K Write
Avg. 4K Random Write Speed 		91.2 MB/s +2% 89.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		358 MB/s Slightly faster mixed IO speed.
+7% 		334 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		50.2 MB/s Faster random mixed IO.
+14% 		44.1 MB/s
SusWrite
Avg. Sustained Write Speed 		168 MB/s 346 MB/s Hugely faster sustained write speed.
+106%
Peak Score 
+18%
Read
Peak Sequential Read Speed 		508 MB/s 515 MB/s +1%
Write
Peak Sequential Write Speed 		489 MB/s +0% 488 MB/s
4K Read
Peak 4K Random Read Speed 		47.3 MB/s Slightly faster peak random read.
+8% 		43.6 MB/s
4K Write
Peak 4K Random Write Speed 		127 MB/s +2% 125 MB/s
Mixed
Peak Sequential Mixed IO Speed 		416 MB/s Slightly faster peak mixed IO speed.
+9% 		383 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		62.6 MB/s Faster peak random mixed IO.
+10% 		56.7 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		190 MB/s 484 MB/s Hugely faster peak sustained write speed.
+155%
Value & Sentiment 
+28%
Market Share
Based on 77,606,037 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.04 % 0.08 % Hugely higher market share.
+100%
Value
Value For Money 		8.46 % 12.5 % Much better value.
+47%
User Rating
UBM User Rating 		58 % Slightly more popular.
+7% 		54 %
Price
Price (score) 		$80 Cheaper.
+27% 		$110
Nice To Haves 
+1%
Age
Newest 		119 Months +4% 124 Months
DQ Read
Peak 4K-64Thread Read Speed 		386 MB/s 388 MB/s +1%
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s 361 MB/s
AS-SSD Total
AS-SSD Total Score 		1,286 Pts +0% 1,280 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		364 MB/s +2% 356 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		338 MB/s 344 MB/s +2%
ADQ Write
Avg. 4K-64Thread Write Speed 		294 MB/s +4% 282 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		302 MB/s +2% 295 MB/s
Specifications 
Capacity
Capacity 		120GB 256GB
Conclusion 
Average Bench 96%
Average Bench 102%

The 256GB Samsung 850 Pro is the fastest consumer SSD we have seen to date. Thanks to Samsung's new 3D V-NAND the 850 Pro has lower power consumption and better performance, albeit marginally, than both the 840 Evo and 840 Pro. Looking at the benchmark figures for the 840 and 850 Pros shows that the effective performance improvement is 10% whereas the 850 Pro beats the 840 Evo by 16%. These drives effectively saturate SATA 3.0 making it difficult to distinguish between them in day-to-day use. At current prices the 850 Pro is prohibitively expensive, prices need to drop by 15% before it approaches the 840 Pro from a value perspective. Samsung may release a value orientated 850 Evo soon, but for now "most" users are better off with the 840 Pro. [Oct '14 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.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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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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 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 Best
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Intel Core i5-13600K $210Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $125
Intel Core i5-12600K $160Nvidia 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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