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SanDiskSDSSDHII-240G-G25
▲ 500 ▼
  

Release date ≈ Q3 2015.

VS
▲ 547,376 ▼

Controller: Marvell 88SS9187. Memory: SanDisk 19nm TLC. Release date: Q3 2014.

Effective Speed 
+5%
Real World Speed
Performance profile from 54,126 user samples
Benchmark your SSD here
195 User Benchmarks
Best Bench: 104% 220GB free (System drive)
Worst Bench: 62% 929GB free
Poor: 62% Great: 104%
SPEED RANK: 395th / 1080
53,931 User Benchmarks
Best Bench: 101% 220GB free
Worst Bench: 58% 120GB free
Poor: 58% Great: 101%
SPEED RANK: 460th / 1080
Effective Speed
Effective SSD Speed 		86.2 % +5% 82.2 %
Average Score 
+12%
Read
Avg. Sequential Read Speed 		470 MB/s Slightly faster read speed.
+5% 		446 MB/s
Write
Avg. Sequential Write Speed 		387 MB/s Slightly faster write speed.
+5% 		367 MB/s
4K Read
Avg. 4K Random Read Speed 		22.6 MB/s 29.8 MB/s Much faster random read.
+32%
4K Write
Avg. 4K Random Write Speed 		76 MB/s 77.3 MB/s +2%
Mixed
Avg. Sequential Mixed IO Speed 		332 MB/s Much faster mixed IO speed.
+30% 		255 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		29.6 MB/s 36.4 MB/s Faster random mixed IO.
+23%
SusWrite
Avg. Sustained Write Speed 		359 MB/s Hugely faster sustained write speed.
+101% 		179 MB/s
Peak Score 
+6%
Read
Peak Sequential Read Speed 		514 MB/s +2% 504 MB/s
Write
Peak Sequential Write Speed 		433 MB/s 477 MB/s Faster peak write speed.
+10%
4K Read
Peak 4K Random Read Speed 		29.2 MB/s 39.1 MB/s Much faster peak random read.
+34%
4K Write
Peak 4K Random Write Speed 		111 MB/s 112 MB/s +1%
Mixed
Peak Sequential Mixed IO Speed 		461 MB/s Much faster peak mixed IO speed.
+31% 		352 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		42.7 MB/s 50 MB/s Faster peak random mixed IO.
+17%
SusWrite
Peak Sequential Sustained Write 60s Average 		428 MB/s Much faster peak sustained write speed.
+69% 		254 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,583,531 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.01 % Insanely higher market share.
+∞%
User Rating
UBM User Rating 		50 % 54 % Slightly more popular.
+8%
Nice To Haves 
+22%
Age
Newest 		109+ Months More recent.
+11% 		122 Months
DQ Read
Peak 4K-64Thread Read Speed 		279 MB/s 390 MB/s Much faster peak deep queue read.
+40%
DQ Write
Peak 4K-64Thread Write Speed 		301 MB/s 310 MB/s +3%
AS-SSD Total
AS-SSD Total Score 		1,005 Pts 1,207 Pts Stronger server IO.
+20%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		201 MB/s 254 MB/s Faster peak deep queue mixed IO.
+26%
ADQ Read
Avg. 4K-64Thread Read Speed 		220 MB/s 325 MB/s Much faster deep queue read.
+48%
ADQ Write
Avg. 4K-64Thread Write Speed 		243 MB/s 244 MB/s +0%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		139 MB/s 202 MB/s Much faster deep queue mixed IO.
+45%
Specifications 
Capacity
Capacity 		1TB 240GB
Conclusion 
Average Bench 86.2%
Average Bench 82.2%

The Sandisk Ultra II sits above Sandisk's Ultra Plus and below their Extreme Pro. The Ultra Plus would probably have been phased out completely were it not for its continued success within budget space. The Ultra II is the first Sandisk drive to utilize cheaper (and slower) TLC NAND. Similarly to the Extreme Pro, the Ultra II utilizes an nCache which operates a portion of the NAND in simulated SLC mode. This strategy also matches the one employed by Samsung's now 14 months old Evo. Comparing the Ultra II and Evo shows broad performance equivalence which given the Ultra II's 15% price discount makes it the better choice today. That said it's probably worth waiting for the release of the 850 Evo which will pack another 14 months of Samsung's market leading R&D and will probably steal the show. [Sep '14 SSDrivePro]

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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]

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  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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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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 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?
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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?
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The Best
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Intel Core i5-12400F $111Nvidia RTX 4060 $280WD Black SN850X M.2 2TB $130
Intel Core i5-12600K $164Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-13600K $210Nvidia RTX 4070 $500Crucial T700 M.2 4TB $389
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