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SanDiskSDSSDXP-240G-G25
AdataASU800SS-256GT-C
▲ 543,094 ▼

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC. Release date: Q2 2013.

VS
▲ 54510 ▼

Controller: Silicon Motion SM2258. Flash Memory: Micron 3D TLC NAND. Release date: Q3 2016.

Effective Speed 
+1%
Real World Speed
Performance profile from 43,734 user samples
Benchmark your SSD here
3,009 User Benchmarks
Best Bench: 109% 170GB free (System drive)
Worst Bench: 65% 77GB free (System drive)
Poor: 65% Great: 109%
SPEED RANK: 331st / 1072
40,725 User Benchmarks
Best Bench: 118% 159GB free (System drive)
Worst Bench: 60% 123GB free (System drive)
Poor: 60% Great: 118%
SPEED RANK: 317th / 1072
Effective Speed
Effective SSD Speed 		90.1 % 90.7 % +1%
Average Score 
+9%
Read
Avg. Sequential Read Speed 		459 MB/s 469 MB/s +2%
Write
Avg. Sequential Write Speed 		393 MB/s Slightly faster write speed.
+6% 		370 MB/s
4K Read
Avg. 4K Random Read Speed 		28.2 MB/s 29.8 MB/s Slightly faster random read.
+6%
4K Write
Avg. 4K Random Write Speed 		77.1 MB/s 81.1 MB/s Slightly faster random write.
+5%
Mixed
Avg. Sequential Mixed IO Speed 		228 MB/s 356 MB/s Much faster mixed IO speed.
+56%
4K Mixed
Avg. 4K Random Mixed IO Speed 		32.2 MB/s 41.4 MB/s Faster random mixed IO.
+29%
SusWrite
Avg. Sustained Write Speed 		341 MB/s Much faster sustained write speed.
+30% 		262 MB/s
Peak Score 
+19%
Read
Peak Sequential Read Speed 		507 MB/s 516 MB/s +2%
Write
Peak Sequential Write Speed 		469 MB/s 471 MB/s +0%
4K Read
Peak 4K Random Read Speed 		34.1 MB/s 40 MB/s Faster peak random read.
+17%
4K Write
Peak 4K Random Write Speed 		112 MB/s 120 MB/s Slightly faster peak random write.
+7%
Mixed
Peak Sequential Mixed IO Speed 		272 MB/s 443 MB/s Much faster peak mixed IO speed.
+63%
4K Mixed
Peak 4K Random Mixed IO Speed 		39.7 MB/s 55.8 MB/s Much faster peak random mixed IO.
+41%
SusWrite
Peak Sequential Sustained Write 60s Average 		466 MB/s +0% 464 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 75,652,979 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.15 % Insanely higher market share.
+∞%
Value
Value For Money 		10.5 % 19 % Hugely better value.
+81%
User Rating
UBM User Rating 		54 % 54 %
Price
Price (score) 		$110 $54 Much cheaper.
+51%
Nice To Haves 
+21%
Age
Newest 		131 Months 91 Months Much more recent.
+31%
DQ Read
Peak 4K-64Thread Read Speed 		361 MB/s 381 MB/s Slightly faster peak deep queue read.
+6%
DQ Write
Peak 4K-64Thread Write Speed 		306 MB/s 360 MB/s Faster peak deep queue write.
+18%
AS-SSD Total
AS-SSD Total Score 		1,149 Pts 1,254 Pts Slightly stronger server IO.
+9%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		154 MB/s 279 MB/s Hugely faster peak deep queue mixed IO.
+81%
ADQ Read
Avg. 4K-64Thread Read Speed 		313 MB/s Faster deep queue read.
+15% 		273 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		260 MB/s 271 MB/s +4%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		139 MB/s 187 MB/s Much faster deep queue mixed IO.
+35%
Specifications 
Capacity
Capacity 		240GB 256GB
Conclusion 
Average Bench 90.1%
Average Bench 90.7%
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The Sandisk Extreme II uses the 88SS9187-BLD2 controller, Marvel's latest, and Sandisk's own 19MM MLC Memory. On paper this makes an extremely good combination and the benchmarks agree. The Extreme II scored an impressive 1143 in the server orientated AS SSD Benchmark putting it amongst the more capable server drives. In terms of real world consumer performance the Extreme II also fared well achieving a real world speed index score of 570.5 MB/s, amongst the top three scores we have seen to date. The Extreme II has everything going for it apart from its price which is currently significantly above average and hurting its value rating. Because the Extreme is the newest SSD we have in our group test we expect prices will drop with time. Until then, however, there is better value to be had elsewhere. [Jun '13 SSDrivePro]

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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 $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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