COMPARE
Today's hottest
Amazon Ebay
deals
SSD
RANKINGS
TEST
YOUR SSD
ADD TO PC
BUILD
SamsungMZ-7KE256BW
OCZVTR150-25SAT3-480G
▲ 5441,223 ▼

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

VS
▲ 501 ▼

Controller: OCZ Barefoot 3 M00. Flash: Toshiba 19nm (1st gen) MLC NAND. Release date ≤ Q2 2014.

Effective Speed 
+7%
Real World Speed
Performance profile from 142,310 user samples
Benchmark your SSD here
141,929 User Benchmarks
Best Bench: 124% 238GB free
Worst Bench: 71% 71GB free (System drive)
Poor: 71% Great: 124%
SPEED RANK: 256th / 1080
381 User Benchmarks
Best Bench: 114% 189GB free
Worst Bench: 69% 360GB free (System drive)
Poor: 69% Great: 114%
SPEED RANK: 286th / 1080
Effective Speed
Effective SSD Speed 		102 % Slightly faster effective speed.
+7% 		95.2 %
Average Score 
+6%
Read
Avg. Sequential Read Speed 		469 MB/s Slightly faster read speed.
+6% 		443 MB/s
Write
Avg. Sequential Write Speed 		396 MB/s 434 MB/s Slightly faster write speed.
+10%
4K Read
Avg. 4K Random Read Speed 		33.9 MB/s Much faster random read.
+32% 		25.7 MB/s
4K Write
Avg. 4K Random Write Speed 		89.6 MB/s +1% 88.3 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		334 MB/s 345 MB/s +3%
4K Mixed
Avg. 4K Random Mixed IO Speed 		44.1 MB/s Much faster random mixed IO.
+38% 		31.9 MB/s
SusWrite
Avg. Sustained Write Speed 		346 MB/s 417 MB/s Faster sustained write speed.
+21%
Peak Score 
+7%
Read
Peak Sequential Read Speed 		515 MB/s 518 MB/s +1%
Write
Peak Sequential Write Speed 		488 MB/s 499 MB/s +2%
4K Read
Peak 4K Random Read Speed 		43.6 MB/s Much faster peak random read.
+42% 		30.6 MB/s
4K Write
Peak 4K Random Write Speed 		125 MB/s 128 MB/s +2%
Mixed
Peak Sequential Mixed IO Speed 		383 MB/s 504 MB/s Much faster peak mixed IO speed.
+32%
4K Mixed
Peak 4K Random Mixed IO Speed 		56.7 MB/s Much faster peak random mixed IO.
+42% 		39.9 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		484 MB/s +0% 483 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,569,265 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.1 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		12.3 % Much better value.
+69% 		7.25 %
User Rating
UBM User Rating 		54 % Slightly more popular.
+8% 		50 %
Price
Price (score) 		$112 Much cheaper.
+71% 		$389
Nice To Haves 
+17%
Age
Newest 		124 Months +2% 127+ Months
DQ Read
Peak 4K-64Thread Read Speed 		388 MB/s +1% 383 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s 364 MB/s +1%
AS-SSD Total
AS-SSD Total Score 		1,280 Pts +2% 1,254 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		356 MB/s Much faster peak deep queue mixed IO.
+47% 		242 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		344 MB/s Faster deep queue read.
+11% 		309 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		282 MB/s +3% 273 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		295 MB/s Much faster deep queue mixed IO.
+67% 		177 MB/s
Specifications 
Capacity
Capacity 		256GB 480GB
Conclusion 
Average Bench 102%
Average Bench 95.2%

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]

MORE DETAILS

User Builds 
141,929
381
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) 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.
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 the gold standard for users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
CPUGPUSSD
Intel Core i5-13600K $210Nvidia RTX 4060 $290WD Black SN850X M.2 2TB $135
Intel Core i5-12400F $111Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $84
Intel Core i5-12600K $167Nvidia RTX 4070 $500Crucial T700 M.2 4TB $406
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