UserBenchmark: SanDisk Extreme II vs Seagate 600

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SeagateST120HM000

BUY • $108

SanDiskSDSSDXP-240G-G25

BUY • $110

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Real World Speed

Performance profile from 3,664 user samples

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655 User Benchmarks

Best Bench: 90% 86GB free
Worst Bench: 54% 15GB free (System drive)

Poor: 54% Great: 90%

SPEED RANK: 563^rd / 1072

3,009 User Benchmarks

Best Bench: 109% 170GB free (System drive)
Worst Bench: 65% 77GB free (System drive)

Poor: 65% Great: 109%

SPEED RANK: 331^st / 1072


Effective Speed Effective SSD Speed		75.6 %			90.1 %	Faster effective speed. +19%


Read Avg. Sequential Read Speed	438 MB/s		459 MB/s	+5%
Write Avg. Sequential Write Speed	258 MB/s		393 MB/s	Much faster write speed. +52%
4K Read Avg. 4K Random Read Speed	23.1 MB/s		28.2 MB/s	Faster random read. +22%
4K Write Avg. 4K Random Write Speed	71 MB/s		77.1 MB/s	Slightly faster random write. +9%
Mixed Avg. Sequential Mixed IO Speed	251 MB/s	Faster mixed IO speed. +10%	228 MB/s
4K Mixed Avg. 4K Random Mixed IO Speed	28.4 MB/s		32.2 MB/s	Faster random mixed IO. +13%
SusWrite Avg. Sustained Write Speed	211 MB/s		341 MB/s	Much faster sustained write speed. +62%


Read Peak Sequential Read Speed	492 MB/s		507 MB/s	+3%
Write Peak Sequential Write Speed	301 MB/s		469 MB/s	Much faster peak write speed. +56%
4K Read Peak 4K Random Read Speed	28.4 MB/s		34.1 MB/s	Faster peak random read. +20%
4K Write Peak 4K Random Write Speed	103 MB/s		112 MB/s	Slightly faster peak random write. +9%
Mixed Peak Sequential Mixed IO Speed	283 MB/s	+4%	272 MB/s
4K Mixed Peak 4K Random Mixed IO Speed	34.1 MB/s		39.7 MB/s	Faster peak random mixed IO. +16%
SusWrite Peak Sequential Sustained Write 60s Average	294 MB/s		466 MB/s	Much faster peak sustained write speed. +59%

Market Share

Based on 75,807,048 SSDs tested

See market share leaders


Market Share Market Share (trailing 30 days)	0 %		0 %
Value Value For Money	5.34 %		10.5 %	Hugely better value. +97%
User Rating UBM User Rating	51 %		54 %	Slightly more popular. +6%
Price Price (score)	$108	+2%	$110


Age Newest	132 Months		132 Months
DQ Read Peak 4K-64Thread Read Speed	358 MB/s		361 MB/s	+1%
DQ Write Peak 4K-64Thread Write Speed	302 MB/s		306 MB/s	+1%
AS-SSD Total AS-SSD Total Score	1,093 Pts		1,149 Pts	Slightly stronger server IO. +5%
DQ Mixed Peak 4K-64Thread Mixed IO Speed	239 MB/s	Much faster peak deep queue mixed IO. +55%	154 MB/s
ADQ Read Avg. 4K-64Thread Read Speed	297 MB/s		313 MB/s	Slightly faster deep queue read. +5%
ADQ Write Avg. 4K-64Thread Write Speed	236 MB/s		260 MB/s	Faster deep queue write. +10%
ADQ Mixed Avg. 4K-64Thread Mixed IO Speed	197 MB/s	Much faster deep queue mixed IO. +42%	139 MB/s


Capacity Capacity			120GB			240GB

The 120GB Seagate 600 is yet another drive that massively underperforms its larger, in this case 240GB, sibling. Looking at the 120GB and 240GB 600's shows that the larger 240GB version has peak speeds that are nearly 50% higher than the smaller 120GB. This increase in speed is down to additional NAND modules on the larger version which allow more parallelization during writes. The 120GB 600 has peak sequential read/write speeds of 508/246 MB/s which is great for reading but terrible for writing. The 600 does have reasonable deep queue performance but that doesn't make up for its relative inability to write. Overall the 120GB Seagate 600 is both slower and more expensive than the group leaders. ^{[Feb '14 SSDrivePro]}

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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) May 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

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CPU	GPU	SSD
Intel Core i5-13600K $254	Nvidia RTX 4060 $300	Crucial MX500 250GB $39
Intel Core i5-12400F $133	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $163	Nvidia RTX 4070 $539	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) $31	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $37	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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