UserBenchmark: SanDisk Extreme Pro vs Ultra II

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SanDiskSDSSDXPS-240G

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SanDiskSDSSDHII-240G-G25

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Real World Speed

Performance profile from 64,793 user samples

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10,862 User Benchmarks

Best Bench: 114% 83GB free (System drive)
Worst Bench: 65% 20GB free (System drive)

Poor: 65% Great: 114%

SPEED RANK: 308^th / 1072

53,931 User Benchmarks

Best Bench: 101% 220GB free
Worst Bench: 58% 120GB free

Poor: 58% Great: 101%

SPEED RANK: 452^nd / 1072


Effective Speed Effective SSD Speed		91.7 %	Faster effective speed. +11%		82.2 %


Read Avg. Sequential Read Speed	455 MB/s	+2%	446 MB/s
Write Avg. Sequential Write Speed	406 MB/s	Faster write speed. +11%	367 MB/s
4K Read Avg. 4K Random Read Speed	28.9 MB/s		29.8 MB/s	+3%
4K Write Avg. 4K Random Write Speed	76.5 MB/s		77.3 MB/s	+1%
Mixed Avg. Sequential Mixed IO Speed	258 MB/s	+1%	255 MB/s
4K Mixed Avg. 4K Random Mixed IO Speed	33.4 MB/s		36.4 MB/s	Slightly faster random mixed IO. +9%
SusWrite Avg. Sustained Write Speed	350 MB/s	Hugely faster sustained write speed. +96%	179 MB/s


Read Peak Sequential Read Speed	509 MB/s	+1%	504 MB/s
Write Peak Sequential Write Speed	479 MB/s	+0%	477 MB/s
4K Read Peak 4K Random Read Speed	35.6 MB/s		39.1 MB/s	Slightly faster peak random read. +10%
4K Write Peak 4K Random Write Speed	113 MB/s	+1%	112 MB/s
Mixed Peak Sequential Mixed IO Speed	316 MB/s		352 MB/s	Faster peak mixed IO speed. +11%
4K Mixed Peak 4K Random Mixed IO Speed	42.4 MB/s		50 MB/s	Faster peak random mixed IO. +18%
SusWrite Peak Sequential Sustained Write 60s Average	480 MB/s	Hugely faster peak sustained write speed. +89%	254 MB/s

Market Share

Based on 75,647,491 SSDs tested

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Market Share Market Share (trailing 30 days)	0 %	0.04 %	Insanely higher market share. +∞%
Value Value For Money	13.7 %	20.5 %	Much better value. +50%
User Rating UBM User Rating	54 %	54 %
Price Price (score)	$79	$40	Much cheaper. +49%


Age Newest	118 Months		115 Months	+3%
DQ Read Peak 4K-64Thread Read Speed	376 MB/s		390 MB/s	+4%
DQ Write Peak 4K-64Thread Write Speed	343 MB/s	Faster peak deep queue write. +11%	310 MB/s
AS-SSD Total AS-SSD Total Score	1,214 Pts	+1%	1,207 Pts
DQ Mixed Peak 4K-64Thread Mixed IO Speed	164 MB/s		254 MB/s	Much faster peak deep queue mixed IO. +55%
ADQ Read Avg. 4K-64Thread Read Speed	325 MB/s		325 MB/s
ADQ Write Avg. 4K-64Thread Write Speed	267 MB/s	Slightly faster deep queue write. +9%	244 MB/s
ADQ Mixed Avg. 4K-64Thread Mixed IO Speed	148 MB/s		202 MB/s	Much faster deep queue mixed IO. +36%


Capacity Capacity			240GB			240GB

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]}

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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) 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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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?

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What is 4K 64 thread write speed?

Can CPU power saving states (C1,C2,C3) impact SSD speed?

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CPU	GPU	SSD
Intel Core i5-13600K $275	Nvidia RTX 4060 $300	Crucial MX500 250GB $40
Intel Core i5-12400F $134	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184	Nvidia RTX 4070 $409	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $39	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43	SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51	G.SKILL Trident Z DDR4 3200 C14 4x16GB $351	SanDisk Ultra Fit 32GB $16

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