SSDs / Compare
Sandisk Portable SSD (E30) vs Silicon Power Ace A55
Product A: Sandisk
20 of 63 known
Change Sandisk Portable SSD (E30)
Product B: Silicon Power
19 of 63 known
Samsung Portable SSD T7 Shield
Samsung Portable SSD T7
Sandisk Extreme Portable SSD (V2)
Lexar ES3 Portable SSD
Sandisk Portable SSD (V3)
Samsung Portable SSD T5 EVO
Sandisk Professional PRO-G40 SSD
Western Digital WD_BLACK P40 Game Drive SSD
Samsung Portable SSD T9
Kingston XS2000
Sabrent Rocket XTRM 5
Lexar ES5 Magnetic Portable SSD
Change Silicon Power Ace A55
Compare the Sandisk Portable SSD (E30) with
Samsung Portable SSD T7 Shield
Samsung Portable SSD T7
Sandisk Extreme Portable SSD (V2)
Lexar ES3 Portable SSD
Sandisk Portable SSD (V3)
Samsung Portable SSD T5 EVO
Sandisk Professional PRO-G40 SSD
Western Digital WD_BLACK P40 Game Drive SSD
Samsung Portable SSD T9
Kingston XS2000
Sabrent Rocket XTRM 5
Lexar ES5 Magnetic Portable SSD16 of 55 fields differ
- 8 different values
- 8 known for one only
- 3 the same
- 36 missing for both
Biggest differences
Each bar uses the scale of all 84 SSDs.
- Read speedA: 800MB/sB: 500MB/sSandisk is 300 MB/s higher.
Size, drawn to scale
Front and side.
- ASandisk: 46.9 × 9.9 mm
- BSilicon Power: 69.9 × 7 mm
Weight
0 to 150 g
All 63 fields
Every value links to where we found it.

General
2 of 9 differ
Series
Not available
Not available
Model numbers
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
619659204877, 6196592048533Retailer pageshop.cisilion.com/sandisk-sdssde30-1t00-g26-external-solid-state-drive-1-tb-usb-type-c-3-2-gen-2-3-1-gen-2-black-sdssde30-1t00-g26.htmlRead 15 October 2026EAN 0619659204877 for SDSSDE30-1T00-G26, stored without the leading zero. eBay lists the same UPC4Retailer pageshop.cisilion.com/sandisk-sdssde30-2t00-g26-external-solid-state-drive-2-tb-usb-type-c-3-2-gen-2-3-1-gen-2-black-sdssde30-2t00-g26.htmlRead 15 October 2026EAN 0619659204853 for SDSSDE30-2T00-G26, stored 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
Not available
Successor
Sandisk Portable SSD (V3)5Retailer pagebhphotovideo.com/c/replacement_for/1773430-REG/sandisk_sdssde30_2t00_g26_e30_2tb_800mb_s_portable.htmlRead 21 October 2026B&H marks the 2TB SDSSDE30-2T00-G26 as discontinued and lists the SDSSDE31-2T00-G25, the SANDISK Portable SSD V3, as its replacement. Sandisk's own store still sells the drive, so the status stays available6Press articlenotebookcheck.com/Sandisk-E31-Kompakte-SSD-mit-bis-zu-2-TB-und-drei-Jahren-Garantie-startet-weltweit.1403869.0.htmlRead 21 October 2026Notebookcheck article of 20 September 2026 on the Portable SSD (V3) calls it lighter by about 8 g than its predecessor (33.2 g against 40 g), about 200 MB/s faster (1,000 against 800 MB/s) and with a fixed eyelet in place of the predecessor's rubber hook. Those values match this drive. The article does not name the E30
Not available
Launch price (US)
Not available
Not available
Launch price (EU)
Not available
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Markets
Not available
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Colours
Not available
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Form factor
Capacity
1 TB, 2 TB1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-usb-3-2-ssdRead 15 October 2026Specifications show 1TB and 2TB for the G26 model numbers2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/usb-3-2-ssd/data-sheet-sandisk-usb-3-2-ssd.pdfRead 15 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
2 of 5 differ
Interface
USB 3.2 Gen 2 (10 Gbps)1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-usb-3-2-ssdRead 15 October 2026Interface row reads USB 3.2 Gen 2, connector USB-C. The page names no USB bridge or flash controller2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/usb-3-2-ssd/data-sheet-sandisk-usb-3-2-ssd.pdfRead 15 October 2026
PCIe generation
Not available
Not available
PCIe lanes
Not available
Not available
NVMe version
Not available
Not available
Hardware
None of 7 known
Controller
Not available
Not available
Flash type
Not available
Not available
Flash memory
Not available
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
Not available
Performance
2 of 4 differ
Sequential read (claimed)
800MB/s1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-usb-3-2-ssdRead 15 October 2026Sequential Read Performance 800MB/s. Footnote on the page and in the datasheet says up to 800MB/s read, write speeds lower, based on internal testing. No write speed is published2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/usb-3-2-ssd/data-sheet-sandisk-usb-3-2-ssd.pdfRead 15 October 2026Footnote: 1TB-2TB up to 800MB/s read speed, 480GB up to 520MB/s. Write speeds lower. Based on internal testing. 1MB=1,000,000 bytes
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)
Not available
Random 4K read (claimed)
Not available
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Random 4K write (claimed)
Not available
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Endurance and reliability
3 of 3 differ
MTBF or MTTF (claimed)
Not available
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
Min0Max45°C1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-usb-3-2-ssdRead 15 October 2026Operating Temperature row reads 0°C to 45°C. Non-operating -20°C to 85°C is not stored2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/usb-3-2-ssd/data-sheet-sandisk-usb-3-2-ssd.pdfRead 15 October 2026Operating temperature 0°C to 45°C
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
Not available
Idle power (claimed)
Not available
Not available
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
Not available
Random 4K write at queue depth 1 (measured)
Not available
Not available
Write cache size (measured)
Not available
Not available
Write speed after the cache (measured)
Not available
Not available
3DMark Storage Benchmark
Not available
Not available
Highest temperature under load (measured)
Not available
Not available
Idle power (measured)
Not available
Not available
Cooling and build
2 of 4 differ
Heatsink
Not available
RGB lighting
Not available
Not available
Dust and water rating
Not available
Not available
Drop test height
2m1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-usb-3-2-ssdRead 15 October 2026Page text says up to two-meter drop protection. The datasheet footnote says based on internal testing. Surface and conditions are not stated2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/usb-3-2-ssd/data-sheet-sandisk-usb-3-2-ssd.pdfRead 15 October 2026Highlights say up to two-meter drop protection, footnote 3 says based on internal testing. The datasheet also lists shock resistance up to 1500G, which has no field
Not available
Security and software
1 of 2 differ
Security
Not available
Not available
Software
Compatibility
0 of 1 differ
Platforms
Dimensions and weight
2 of 2 differ
Dimensions
Length96.9Width46.9Height9.91mm(3.8 × 1.8 × 0.4 in)2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/usb-3-2-ssd/data-sheet-sandisk-usb-3-2-ssd.pdfRead 15 October 2026Row reads 3.81 x 1.85 x 0.39 in. (96.90 x 46.90 x 9.91 mm). The row is labelled H x W x L but 96.9 mm is the long side, so it is stored as length. Cisilion's feed gives the same three values
Weight
40g(1.4 oz)1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-usb-3-2-ssdRead 15 October 2026Weight row reads 40gms3Retailer pageshop.cisilion.com/sandisk-sdssde30-1t00-g26-external-solid-state-drive-1-tb-usb-type-c-3-2-gen-2-3-1-gen-2-black-sdssde30-1t00-g26.htmlRead 15 October 2026Weight 40 g, matching the maker's page
In the box
2 of 2 differ
In the box
SanDisk Portable SSD, USB-C to USB-A Cable, Safety and Warranty Guide1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-usb-3-2-ssdRead 15 October 2026In The Box rows, verbatim
Not available
Cables included
ASandisk Portable SSD (E30)
| Type | Count |
|---|---|
| USB-C to USB-A | 1 |
BSilicon Power Ace A55
Not availableLinks
Not compared
Product page
Spec sheet
documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/usb-3-2-ssd/data-sheet-sandisk-usb-3-2-ssd.pdf2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/usb-3-2-ssd/data-sheet-sandisk-usb-3-2-ssd.pdfRead 15 October 2026
Manual
Not available
Not available
EPREL registration number
Not available
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Warranty
0 of 1 differ
Manufacturer warranty (source market)
3years1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-usb-3-2-ssdRead 15 October 2026Specifications row reads 3-Year Limited Warranty2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/portable-drives/usb-3-2-ssd/data-sheet-sandisk-usb-3-2-ssd.pdfRead 15 October 2026Warranty 3-year limited (US only) and 3-year (rest of world)









