UserBenchmark: Adata XPG SX900 vs SanDisk Ultra Plus

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AdataASX900S3-256GM-C

BUY • $164

SanDiskSDSSDHP-128G-G25

BUY • $75

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Real World Speed

Performance profile from 23,435 user samples

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6,726 User Benchmarks

Best Bench: 90% 238GB free
Worst Bench: 58% 1GB free

Poor: 58% Great: 90%

SPEED RANK: 542^nd / 1072

16,709 User Benchmarks

Best Bench: 91% 42GB free
Worst Bench: 56% 38GB free

Poor: 56% Great: 91%

SPEED RANK: 540^th / 1072


Effective Speed Effective SSD Speed		76.6 %			76.8 %	+0%


Read Avg. Sequential Read Speed	368 MB/s		448 MB/s	Faster read speed. +22%
Write Avg. Sequential Write Speed	256 MB/s	+2%	250 MB/s
4K Read Avg. 4K Random Read Speed	28.3 MB/s	Slightly faster random read. +5%	26.9 MB/s
4K Write Avg. 4K Random Write Speed	79.7 MB/s	Faster random write. +10%	72.2 MB/s
Mixed Avg. Sequential Mixed IO Speed	270 MB/s	Much faster mixed IO speed. +45%	186 MB/s
4K Mixed Avg. 4K Random Mixed IO Speed	35.2 MB/s	Faster random mixed IO. +18%	29.8 MB/s
SusWrite Avg. Sustained Write Speed	190 MB/s		213 MB/s	Faster sustained write speed. +12%


Read Peak Sequential Read Speed	423 MB/s		492 MB/s	Faster peak read speed. +16%
Write Peak Sequential Write Speed	298 MB/s	+2%	292 MB/s
4K Read Peak 4K Random Read Speed	34.7 MB/s	Slightly faster peak random read. +7%	32.3 MB/s
4K Write Peak 4K Random Write Speed	111 MB/s	Slightly faster peak random write. +9%	102 MB/s
Mixed Peak Sequential Mixed IO Speed	302 MB/s	Much faster peak mixed IO speed. +37%	220 MB/s
4K Mixed Peak 4K Random Mixed IO Speed	43.3 MB/s	Faster peak random mixed IO. +20%	36.2 MB/s
SusWrite Peak Sequential Sustained Write 60s Average	236 MB/s		290 MB/s	Faster peak sustained write speed. +23%

Market Share

Based on 75,803,565 SSDs tested

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Market Share Market Share (trailing 30 days)	0.01 %	0.01 %
Value Value For Money	6.96 %	7.45 %	Slightly better value. +7%
User Rating UBM User Rating	53 %	53 %
Price Price (score)	$164	$75	Much cheaper. +54%


Age Newest	146 Months		136 Months	Slightly more recent. +7%
DQ Read Peak 4K-64Thread Read Speed	298 MB/s		319 MB/s	Slightly faster peak deep queue read. +7%
DQ Write Peak 4K-64Thread Write Speed	264 MB/s	Much faster peak deep queue write. +33%	199 MB/s
AS-SSD Total AS-SSD Total Score	978 Pts	+4%	937 Pts
DQ Mixed Peak 4K-64Thread Mixed IO Speed	256 MB/s	Hugely faster peak deep queue mixed IO. +105%	125 MB/s
ADQ Read Avg. 4K-64Thread Read Speed	245 MB/s		284 MB/s	Faster deep queue read. +16%
ADQ Write Avg. 4K-64Thread Write Speed	219 MB/s	Faster deep queue write. +27%	173 MB/s
ADQ Mixed Avg. 4K-64Thread Mixed IO Speed	194 MB/s	Much faster deep queue mixed IO. +70%	114 MB/s


Capacity Capacity			256GB			128GB

The SX900 and SX910 are both Sandforce 2881 based SSDs from Adata. The only difference between them is their warranty period: 5 years for the SX910 vs 3 years for the SX900. Both drives utilize Intel-Micron 25Nm MLC so the differences must be at a "sub-atomic" level, or at least beyond the scope of the specs. Once again as with all Sandforce 2881 based drives performance is skewed in favour of reads over writes. With a peak sequential read of 510 MB/s and corresponding sequential write of 309 MB/s the SX series does not break any records but, like all SSDs, they do offer speeds way in excess of mechanical hard drives. Overall performance lags the SSD group leaders by around 40% and there are far faster, cheaper and newer (non-Sandforce) alternatives such as the Samsung 840 Evo or the Sandisk Ultra Plus available. ^{[Jan '14 SSDrivePro]}

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The 128GB Sandisk Ultra Plus proved to be a bit of a disappointment in comparison to its larger 256GB sibling. The 256GB version has more NAND modules which enable peak sequential write speeds in the region of 450 MB/s. On the 128GB version we saw a peak sequential write speed of just 279 MB/s which is significantly lower than the market leaders which also manage to hit the high 400's. Across the core performance metrics, the 128GB Ultra Plus is around 25% slower than the average of its top competitors and, unlike its 256GB sibling, really struggles to keep up with its direct competition. In terms of value for money the Ultra Plus fares a little better thanks to its reasonably low price tag but there are far better deals to be had in the 128GB category. ^{[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 i5-13600K $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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