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SanDiskSDSSDXPS-240G
SamsungMZ-7TD250BW
▲ 544,013 ▼

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

VS
▲ 521,153 ▼

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

Effective Speed 
+32%
Real World Speed
Performance profile from 52,860 user samples
Benchmark your SSD here
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
41,998 User Benchmarks
Best Bench: 85% 214GB free
Worst Bench: 51% 160GB free (System drive)
Poor: 51% Great: 85%
SPEED RANK: 677th / 1072
Effective Speed
Effective SSD Speed 		91.7 % Much faster effective speed.
+32% 		69.6 %
Average Score 
+52%
Read
Avg. Sequential Read Speed 		455 MB/s Slightly faster read speed.
+10% 		415 MB/s
Write
Avg. Sequential Write Speed 		406 MB/s Hugely faster write speed.
+114% 		190 MB/s
4K Read
Avg. 4K Random Read Speed 		28.9 MB/s Faster random read.
+11% 		26.1 MB/s
4K Write
Avg. 4K Random Write Speed 		76.5 MB/s Slightly faster random write.
+7% 		71.3 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		258 MB/s Much faster mixed IO speed.
+72% 		150 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		33.4 MB/s Much faster random mixed IO.
+48% 		22.5 MB/s
SusWrite
Avg. Sustained Write Speed 		350 MB/s Hugely faster sustained write speed.
+101% 		174 MB/s
Peak Score 
+51%
Read
Peak Sequential Read Speed 		509 MB/s +5% 485 MB/s
Write
Peak Sequential Write Speed 		479 MB/s Hugely faster peak write speed.
+89% 		254 MB/s
4K Read
Peak 4K Random Read Speed 		35.6 MB/s Faster peak random read.
+18% 		30.2 MB/s
4K Write
Peak 4K Random Write Speed 		113 MB/s Slightly faster peak random write.
+10% 		103 MB/s
Mixed
Peak Sequential Mixed IO Speed 		316 MB/s Much faster peak mixed IO speed.
+80% 		176 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		42.4 MB/s Much faster peak random mixed IO.
+61% 		26.3 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		480 MB/s Hugely faster peak sustained write speed.
+94% 		248 MB/s
Value & Sentiment 
+6%
Market Share
Based on 75,697,763 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.04 % Hugely higher market share.
+300%
Value
Value For Money 		13.7 % Hugely better value.
+205% 		4.5 %
User Rating
UBM User Rating 		54 % +4% 52 %
Price
Price (score) 		$79 Much cheaper.
+69% 		$251
Nice To Haves 
+63%
Age
Newest 		118 Months More recent.
+14% 		138 Months
DQ Read
Peak 4K-64Thread Read Speed 		376 MB/s +2% 369 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		343 MB/s Much faster peak deep queue write.
+57% 		219 MB/s
AS-SSD Total
AS-SSD Total Score 		1,214 Pts Stronger server IO.
+19% 		1,022 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		164 MB/s Hugely faster peak deep queue mixed IO.
+177% 		59.3 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		325 MB/s +2% 318 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		267 MB/s Much faster deep queue write.
+66% 		161 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		148 MB/s Hugely faster deep queue mixed IO.
+170% 		54.9 MB/s
Specifications 
Capacity
Capacity 		240GB 250GB
Conclusion 
Average Bench 91.7%
Average Bench 69.6%
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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

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

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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.

UserBenchmark of the month

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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 $273Nvidia RTX 4060 $295Crucial MX500 250GB $40
Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $179Nvidia RTX 4070 $539Samsung 860 Evo 250GB $52
HDDRAMUSB
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $45SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $37Corsair 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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