UserBenchmark: SanDisk Extreme II vs Seagate 600

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SeagateST120HM000

BUY • $108

SanDiskSDSSDXP-120G-G25

$130

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Real World Speed

Performance profile from 3,117 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: 565^th / 1073

2,462 User Benchmarks

Best Bench: 101% 112GB free
Worst Bench: 59% 87GB free

Poor: 59% Great: 101%

SPEED RANK: 410^th / 1073


Effective Speed Effective SSD Speed		75.6 %			84.8 %	Faster effective speed. +12%


Read Avg. Sequential Read Speed	438 MB/s		464 MB/s	Slightly faster read speed. +6%
Write Avg. Sequential Write Speed	258 MB/s		292 MB/s	Faster write speed. +13%
4K Read Avg. 4K Random Read Speed	23.1 MB/s		27.9 MB/s	Faster random read. +21%
4K Write Avg. 4K Random Write Speed	71 MB/s		78.7 MB/s	Faster random write. +11%
Mixed Avg. Sequential Mixed IO Speed	251 MB/s	Faster mixed IO speed. +15%	219 MB/s
4K Mixed Avg. 4K Random Mixed IO Speed	28.4 MB/s		32.5 MB/s	Faster random mixed IO. +14%
SusWrite Avg. Sustained Write Speed	211 MB/s		260 MB/s	Faster sustained write speed. +23%


Read Peak Sequential Read Speed	492 MB/s		509 MB/s	+3%
Write Peak Sequential Write Speed	301 MB/s		326 MB/s	Slightly faster peak write speed. +8%
4K Read Peak 4K Random Read Speed	28.4 MB/s		34.5 MB/s	Faster peak random read. +21%
4K Write Peak 4K Random Write Speed	103 MB/s		119 MB/s	Faster peak random write. +16%
Mixed Peak Sequential Mixed IO Speed	283 MB/s	Faster peak mixed IO speed. +13%	251 MB/s
4K Mixed Peak 4K Random Mixed IO Speed	34.1 MB/s		40.5 MB/s	Faster peak random mixed IO. +19%
SusWrite Peak Sequential Sustained Write 60s Average	294 MB/s		323 MB/s	Slightly faster peak sustained write speed. +10%

Market Share

Based on 75,983,921 SSDs tested

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Market Share Market Share (trailing 30 days)	0 %		0 %
Value Value For Money	5.34 %	+3%	5.19 %
User Rating UBM User Rating	51 %		51 %
Price Price (score)	$108	Cheaper. +17%	$130


Age Newest	132 Months		132 Months
DQ Read Peak 4K-64Thread Read Speed	358 MB/s	+4%	345 MB/s
DQ Write Peak 4K-64Thread Write Speed	302 MB/s	Slightly faster peak deep queue write. +6%	286 MB/s
AS-SSD Total AS-SSD Total Score	1,093 Pts	+0%	1,091 Pts
DQ Mixed Peak 4K-64Thread Mixed IO Speed	239 MB/s	Much faster peak deep queue mixed IO. +56%	153 MB/s
ADQ Read Avg. 4K-64Thread Read Speed	297 MB/s		300 MB/s	+1%
ADQ Write Avg. 4K-64Thread Write Speed	236 MB/s		239 MB/s	+1%
ADQ Mixed Avg. 4K-64Thread Mixed IO Speed	197 MB/s	Much faster deep queue mixed IO. +42%	139 MB/s


Capacity Capacity			120GB			120GB

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 120GB Sandisk Extreme II proved to be a disappointment. I was expecting the same blistering performance as I saw on its larger 240GB sibling but that proved not to be the case. Comparing the 120GB and 240GB Extreme II's reveals that the larger 240GB version has peak speed ratings that are approximately 35% faster that the 120GB Extreme II. The main weakness of the 120GB Extreme II is its sequential write speed which is just 305 MB/s vs 492 MB/s on the 240GB version. Reduced write ability at lower capacities is explained by fewer NAND modules which reduce a controllers ability to parallelize slow write operations across different memory banks. Overall the Sandisk Extreme II sits amongst the bottom 20% of performers in the 120-128GB capacity category. Several of the drives in the group test have comparable performance at both the 120 and 240 GB capacities, those drives are the ones to go for. ^{[Feb '14 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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CPU	GPU	SSD
Intel Core i5-12600K $176	Nvidia RTX 4060 $293	Crucial MX500 250GB $39
Intel Core i5-12400F $128	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-13600K $260	Nvidia RTX 4070 $550	Samsung 870 Evo 250GB $45

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $37	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $44	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $39	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $48	SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $62	G.SKILL Trident Z DDR4 3200 C14 4x16GB $351	SanDisk Ultra Fit 32GB $16

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