SSDs / Compare
Sandisk SSD PLUS vs Silicon Power Ace A55
Product A: Sandisk
20 of 63 known
Change Sandisk SSD PLUS
Product B: Silicon Power
19 of 63 known
Change Silicon Power Ace A55
13 of 55 fields differ
- 8 different values
- 5 known for one only
- 5 the same
- 37 missing for both
Biggest differences
Each bar uses the scale of all 84 SSDs.
- Write speedA: 515MB/sB: 450MB/sSandisk is 65 MB/s higher.
Weight
0 to 150 g
All 63 fields
Every value links to where we found it.

General
3 of 9 differ
Series
Not available
Model numbers
SDSSDA-250G-G28, SDSSDA-500G-G28, SDSSDA-1T00-G28, SDSSDA-2T00-G281Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 2026Specifications table, Global Model Numbers: SDSSDA-2T00-G28, SDSSDA-1T00-G28, SDSSDA-500G-G28 and SDSSDA-250G-G28. Earlier SSD PLUS revisions (G25, G26, G27) are older drives with other part numbers and are not part of this product2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-ssd-plus-sata-iii-ssdRead 16 October 2026Model Numbers block: 250GB SDSSDA-250G-G28, 500GB SDSSDA-500G-G28, 1TB SDSSDA-1T00-G28, 2TB SDSSDA-2T00-G28
SP128GBSS3A55S25, SPJ128GBSS3A55B, SU128GBSS3A55S25EU, SP256GBSS3A55S25, SPJ256GBSS3A55B, SU256GBSS3A55S25EU, SU256GBSS3A55S25AH, SP512GBSS3A55S25, SPJ512GBSS3A55B, SU512GBSS3A55S25EU, SP001TBSS3A55S25, SPJ001TBSS3A55B, SU001TBSS3A55S25EU, SU001TBSS3A55S25AC, SP002TBSS3A55S25, SPJ002TBSS3A55B, SU002TBSS3A55S25EU, SU002TBSS3A55S25SN, SP004TBSS3A55S25, SPJ004TBSS3A55B, SP004TBSS3A55S25AY, SP008TBSS3A55S25, SP016TBSS3A55S251Maker product pagesilicon-power.com/product-detail/Ace_A55Read 15 October 2026The price table lists a P/N per capacity. Each capacity has an SP, an SPJ and an SU code, and some have a regional suffix such as EU, AC, SN or AY. The page does not say what the prefixes and suffixes mean. They are stored as one list per capacity.2Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ace-a55Read 15 October 2026Ordering Information lists only 2TB SP002TBSS3A55S25, 4TB SP004TBSS3A55S25, 8TB SP008TBSS3A55S25 and 16TB SP016TBSS3A55S25, and says more part numbers are available from sales.3Maker product pageweb.archive.org/web/20251216203842/https://sp-siliconpower.com/products/a55-128gb-2tb-sata-iii-2-5-inch-internal-solid-state-driveRead 21 October 2026The US store sells the 256GB as SU256GBSS3A55S25AH, a code that the global page does not list. It is added to the 256GB list
GTIN / EAN
619659217969, 619659218003, 619659217952, 6196592179903Retailer pageamazon.com/dp/B0F4Y3DH17Read 21 October 2026Product information lists UPC 619659217990 for model SDSSDA-2T00-G28. The 13-digit EAN form is 0619659217990, which a price-comparison feed (Globerada) also shows for this model4Retailer pagehard.rozetka.com.ua/ua/sandisk-sdssda-250g-g28/p599168167Read 21 October 2026Rozetka (Ukraine) specification tab, manufacturer code SDSSDA-250G-G28: EAN 6196592179695Retailer pagegloberada.com/precios/sandisk-ssd-plus-1tb-sdssda-1t00-g28.htmlRead 21 October 2026Price-comparison page for SDSSDA-1T00-G28 carries the product barcode 0619659217952 (UPC 619659217952). Go-UPC lists the same code as a 1TB SSD Plus with up to 545 MB/s read and 515 MB/s write, the G28 speeds6Retailer pageshop.cisilion.com/sandisk-ssd-plus-500-gb-2-5-serial-ata-iii-3d-nand-sdssda-500g-g28.htmlRead 21 October 2026Cisilion (UK distributor) product page for SKU SDSSDA-500G-G28: EAN 0619659218003, which is UPC 619659218003 without the leading zero
886576030425, 886576078304, 886576030449, 886576030456, 886576037912, 8865760696783Maker product pageweb.archive.org/web/20251216203842/https://sp-siliconpower.com/products/a55-128gb-2tb-sata-iii-2-5-inch-internal-solid-state-driveRead 21 October 2026Variant barcodes from the store page data of the same capture: 886576030425 (128GB, SP128GBSS3A55S25), 886576078304 (256GB, SU256GBSS3A55S25AH), 886576030449 (512GB, SP512GBSS3A55S25), 886576030456 (1TB, SP001TBSS3A55S25), 886576037912 (2TB, SP002TBSS3A55S25), 886576069678 (4TB, SP004TBSS3A55S25). These are 12-digit UPCs for the US store. EAN barcodes for other markets are not stored, since the retailer listings that show them disagree on the part number
Announced
Not available
Not available
Status
Predecessor
Not available
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Successor
Not available
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Launch price (US)
Not available
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Launch price (EU)
Not available
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Markets
Not available
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Colours
Not available
Form factor
2.5-inch1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 2026Form Factor reads 2.5in/7mm cased2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-ssd-plus-sata-iii-ssdRead 16 October 2026
Capacity
250 GB, 500 GB, 1 TB, 2 TB1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 2026Capacities 250GB, 500GB, 1TB and 2TB. Footnote 1 says 1TB is one trillion bytes2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-ssd-plus-sata-iii-ssdRead 16 October 2026
128 GB, 256 GB, 512 GB, 1 TB, 2 TB, 4 TB, 8 TB, 16 TB1Maker product pagesilicon-power.com/product-detail/Ace_A55Read 15 October 2026Capacity row reads 128GB, 256GB, 512GB, 1TB, 2TB, 4TB, 8TB, 16TB. The datasheet footnote says 1GB equals 1 billion bytes.2Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ace-a55Read 15 October 2026
Interface
0 of 5 differ
Interface
SATA1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 2026Interface reads SATA III 6 Gb/s, backward compatible to SATA II and I2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-ssd-plus-sata-iii-ssdRead 16 October 2026
PCIe generation
Not available
Not available
PCIe lanes
Not available
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NVMe version
Not available
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Detachable cable
Not available
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Hardware
1 of 7 differ
Controller
Not available
Not available
Flash type
Not available
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Flash memory
Not available
Flash layers
Not available
Not available
DRAM cache
Not available
Not available
DRAM cache size
Not available
Not available
Component sides
Not available
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Performance
2 of 4 differ
Sequential read (claimed)
545MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 2026Sequential Read up to 545 MB/s for all four capacities. Footnote 2: based on internal testing, 1 MB/s is 1 million bytes per second, host not named2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-ssd-plus-sata-iii-ssdRead 16 October 2026545 MB/s. The page text says up to 545MB/s read and up to 515MB/s write for 1-2TB and 505MB/s for 250-500GB
500MB/s1Maker product pagesilicon-power.com/product-detail/Ace_A55Read 15 October 2026Performance Read (max.) row: 460 MB/s for 128GB and 256GB, 500 MB/s for 512GB and up. The base is the 2TB model. No test tool or host is named. The page note says results vary with platform, software, interface and capacity.2Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ace-a55Read 15 October 2026
Sequential write (claimed)
515MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 2026Sequential Write up to 515 MB/s for 1TB and 2TB and 505 MB/s for 250GB and 500GB. The base stores the 2TB model2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-ssd-plus-sata-iii-ssdRead 16 October 2026
Random 4K read (claimed)
Not available
Not available
Random 4K write (claimed)
Not available
Not available
Endurance and reliability
2 of 3 differ
MTBF or MTTF (claimed)
1,500,000h1Maker product pagesilicon-power.com/product-detail/Ace_A55Read 15 October 2026MTBF (est) row reads 1,500,000 hours. The datasheet row says MTBF (test) with the same value. Stored as MTBF.2Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ace-a55Read 15 October 2026MTBF (test) 1,500,000 hours.
Operating temperature
Min0Max70°C1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 2026Operating temperature 0 C to 70 C (32 F to 158 F), as reported by the drive. Non-operating range of -55 C to 85 C is not stored2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-ssd-plus-sata-iii-ssdRead 16 October 2026
Power
None of 6 known
Power while reading (claimed)
Not available
Not available
Power while writing (claimed)
Not available
Not available
Max power consumption (claimed)
Not available
Not available
Average power in light use (claimed)
Not available
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Idle power (claimed)
Not available
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Sleep power (claimed)
Not available
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Measured
None of 9 known
Sequential read (measured)
Not available
Not available
Sequential write (measured)
Not available
Not available
Random 4K read at queue depth 1 (measured)
Not available
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Random 4K write at queue depth 1 (measured)
Not available
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Write cache size (measured)
Not available
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Write speed after the cache (measured)
Not available
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3DMark Storage Benchmark
Not available
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Highest temperature under load (measured)
Not available
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Idle power (measured)
Not available
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Cooling and build
1 of 4 differ
Heatsink
Not available
RGB lighting
Not available
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Dust and water rating
Not available
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Drop test height
Not available
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Security and software
1 of 2 differ
Security
Not available
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Software
SanDisk Dashboard1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 2026Highlights text names SanDisk Dashboard, with tools for monitoring and optimizing the drive. The maker's page also offers Acronis True Image for SanDisk for cloning2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-ssd-plus-sata-iii-ssdRead 16 October 2026Page names Acronis True Image for SanDisk for set-up and migration. The datasheet names SanDisk Dashboard, which is stored
Compatibility
1 of 1 differ
Platforms
Dimensions and weight
2 of 2 differ
Dimensions
Length100.5Width69.85Height7mm(4 × 2.8 × 0.3 in)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 2026Length 100.50 mm, width 69.85 mm, height 7.0 mm for the 2.5in/7mm cased drive. Footnote 8: length and width vary by 0.10 mm2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-ssd-plus-sata-iii-ssdRead 16 October 2026
Weight
32.7g(1.2 oz)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 202632.7 g for the cased drive. Footnote 8: weight may vary by 10 percent. The same weight is listed for every capacity2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-ssd-plus-sata-iii-ssdRead 16 October 2026
In the box
None of 2 known
In the box
Not available
Not available
Cables included
Not available
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Links
Not compared
Product page
Spec sheet
documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdf1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 2026Sandisk SSD PLUS SATA data sheet, two pages, footer dated April 2025. The PDF metadata shows it was created on 2025-05-23. The link is the Data Sheet download on the maker's product page
Manual
Not available
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EPREL registration number
Not available
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Warranty
0 of 1 differ
Manufacturer warranty (source market)
3years1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/ssd-plus-sata-iii-ssd/data-sheet-sandisk-ssd-plus-sata.pdfRead 16 October 20263 years or the Max Endurance (TBW) limit, whichever occurs first (footnote 5). The TBW limit is not published for this drive2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-ssd-plus-sata-iii-ssdRead 16 October 2026













