COMPARE
SSD
RANKINGS
TEST
YOUR SSD
ADD TO PC
BUILD
Pm991
SamsungMZ-77E500B
▲ 500 ▼
  

Release date ≈ Q4 2019.

VS
▲ 58141 ▼

Controller: Samsung MKX. Memory: Samsung 128 layer TLC V-NAND. Release date ≈ Q1 2021.

Effective Speed 
+11%
Real World Speed
Performance profile from 63,537 user samples
Benchmark your SSD here
2,686 User Benchmarks
Best Bench: 198% 42GB free (System drive)
Worst Bench: 70% 218GB free (System drive)
Poor: 70% Great: 198%
SPEED RANK: 199th / 1072
60,851 User Benchmarks
Best Bench: 130% 466GB free
Worst Bench: 73% 294GB free (System drive)
Poor: 73% Great: 130%
SPEED RANK: 241st / 1072
Effective Speed
Effective SSD Speed 		115 % Faster effective speed.
+11% 		104 %
Average Score 
+7%
Read
Avg. Sequential Read Speed 		931 MB/s Hugely faster read speed.
+100% 		466 MB/s
Write
Avg. Sequential Write Speed 		412 MB/s +1% 407 MB/s
4K Read
Avg. 4K Random Read Speed 		34.2 MB/s 36.4 MB/s Slightly faster random read.
+6%
4K Write
Avg. 4K Random Write Speed 		81.2 MB/s 81.9 MB/s +1%
Mixed
Avg. Sequential Mixed IO Speed 		429 MB/s Faster mixed IO speed.
+13% 		379 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		40 MB/s 46.7 MB/s Faster random mixed IO.
+17%
SusWrite
Avg. Sustained Write Speed 		252 MB/s 351 MB/s Much faster sustained write speed.
+39%
Peak Score 
+76%
Read
Peak Sequential Read Speed 		1369 MB/s Hugely faster peak read speed.
+165% 		516 MB/s
Write
Peak Sequential Write Speed 		1227 MB/s Hugely faster peak write speed.
+149% 		492 MB/s
4K Read
Peak 4K Random Read Speed 		49.5 MB/s +2% 48.4 MB/s
4K Write
Peak 4K Random Write Speed 		137 MB/s Faster peak random write.
+12% 		122 MB/s
Mixed
Peak Sequential Mixed IO Speed 		1182 MB/s Hugely faster peak mixed IO speed.
+157% 		460 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		69.7 MB/s Slightly faster peak random mixed IO.
+7% 		65.4 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		628 MB/s Much faster peak sustained write speed.
+39% 		451 MB/s
Value & Sentiment 
+2,058%
Market Share
Based on 75,652,204 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.42 % Insanely higher market share.
+4,100%
User Rating
UBM User Rating 		50 % 58 % More popular.
+16%
Nice To Haves 
+64%
Age
Newest 		54+ Months 38+ Months More recent.
+30%
DQ Read
Peak 4K-64Thread Read Speed 		902 MB/s Hugely faster peak deep queue read.
+132% 		389 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		875 MB/s Hugely faster peak deep queue write.
+141% 		363 MB/s
AS-SSD Total
AS-SSD Total Score 		2,785 Pts Hugely stronger server IO.
+116% 		1,291 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		733 MB/s Hugely faster peak deep queue mixed IO.
+97% 		373 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		536 MB/s Much faster deep queue read.
+52% 		352 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		274 MB/s 301 MB/s Slightly faster deep queue write.
+10%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		325 MB/s Faster deep queue mixed IO.
+10% 		295 MB/s
Specifications 
Capacity
Capacity 		512GB 500GB
User Builds 
2,686
60,851
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) 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]

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
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
If you make a purchase via one of these links, our site may earn a commission
Today's hottest
Amazon Ebay
deals
CPU GPU SSD HDD USB RAM MBD
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback