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SamsungMZ-7TD250BW
SanDiskSDSSDXPS-240G
▲ 521,153 ▼

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

VS
▲ 544,013 ▼

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC. Release date: Q2 2014.

Effective Speed 
+32%
Real World Speed
Performance profile from 52,860 user samples
Benchmark your SSD here
41,998 User Benchmarks
Best Bench: 85% 214GB free
Worst Bench: 51% 160GB free (System drive)
Poor: 51% Great: 85%
SPEED RANK: 677th / 1072
10,862 User Benchmarks
Best Bench: 114% 83GB free (System drive)
Worst Bench: 65% 20GB free (System drive)
Poor: 65% Great: 114%
SPEED RANK: 308th / 1072
Effective Speed
Effective SSD Speed 		69.6 % 91.7 % Much faster effective speed.
+32%
Average Score 
+52%
Read
Avg. Sequential Read Speed 		415 MB/s 455 MB/s Slightly faster read speed.
+10%
Write
Avg. Sequential Write Speed 		190 MB/s 406 MB/s Hugely faster write speed.
+114%
4K Read
Avg. 4K Random Read Speed 		26.1 MB/s 28.9 MB/s Faster random read.
+11%
4K Write
Avg. 4K Random Write Speed 		71.3 MB/s 76.5 MB/s Slightly faster random write.
+7%
Mixed
Avg. Sequential Mixed IO Speed 		150 MB/s 258 MB/s Much faster mixed IO speed.
+72%
4K Mixed
Avg. 4K Random Mixed IO Speed 		22.5 MB/s 33.4 MB/s Much faster random mixed IO.
+48%
SusWrite
Avg. Sustained Write Speed 		174 MB/s 350 MB/s Hugely faster sustained write speed.
+101%
Peak Score 
+51%
Read
Peak Sequential Read Speed 		485 MB/s 509 MB/s +5%
Write
Peak Sequential Write Speed 		254 MB/s 479 MB/s Hugely faster peak write speed.
+89%
4K Read
Peak 4K Random Read Speed 		30.2 MB/s 35.6 MB/s Faster peak random read.
+18%
4K Write
Peak 4K Random Write Speed 		103 MB/s 113 MB/s Slightly faster peak random write.
+10%
Mixed
Peak Sequential Mixed IO Speed 		176 MB/s 316 MB/s Much faster peak mixed IO speed.
+80%
4K Mixed
Peak 4K Random Mixed IO Speed 		26.3 MB/s 42.4 MB/s Much faster peak random mixed IO.
+61%
SusWrite
Peak Sequential Sustained Write 60s Average 		248 MB/s 480 MB/s Hugely faster peak sustained write speed.
+94%
Value & Sentiment 
+∞%
Market Share
Based on 75,648,733 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.03 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		4.5 % 13.7 % Hugely better value.
+205%
User Rating
UBM User Rating 		52 % 54 % +4%
Price
Price (score) 		$251 $79 Much cheaper.
+69%
Nice To Haves 
+63%
Age
Newest 		138 Months 118 Months More recent.
+14%
DQ Read
Peak 4K-64Thread Read Speed 		369 MB/s 376 MB/s +2%
DQ Write
Peak 4K-64Thread Write Speed 		219 MB/s 343 MB/s Much faster peak deep queue write.
+57%
AS-SSD Total
AS-SSD Total Score 		1,022 Pts 1,214 Pts Stronger server IO.
+19%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		59.3 MB/s 164 MB/s Hugely faster peak deep queue mixed IO.
+177%
ADQ Read
Avg. 4K-64Thread Read Speed 		318 MB/s 325 MB/s +2%
ADQ Write
Avg. 4K-64Thread Write Speed 		161 MB/s 267 MB/s Much faster deep queue write.
+66%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		54.9 MB/s 148 MB/s Hugely faster deep queue mixed IO.
+170%
Specifications 
Capacity
Capacity 		250GB 240GB
Conclusion 
Average Bench 69.6%
Average Bench 91.7%
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The Samsung 840 is the budget version of the 840 Pro, the main difference between the hardware on the two drives is the type of flash memory used. The cheaper 840 uses TLC NAND which is cheaper than the MLC found in the Pro version of this drive. The performance hit as a result of the cheaper TLC memory is approximately 30%. The 840 delvers both average real world speeds (435 MB/s) and average enterprise speeds (AS-SSD Total Score 920). The relative weak spots in this drives performance profile are its write ability, where it scores just 254 MB/s in the sequential write test. The upside to the lost performance over the Pro version is a significant reduction in price which leaves this drive an average value for money proposition at its current price of £135. There are, however, better value drives to be had elsewhere including Samsungs own newly released EVO which effectively supersedes the 840. [Aug '13 SSDrivePro]

MORE DETAILS

The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '14 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?
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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