SSDs / Compare
Silicon Power UD90 vs XPG GAMMIX S70 BLADE
Product A: Silicon Power
26 of 63 known
Change Silicon Power UD90
Product B: XPG
31 of 63 known
Change XPG GAMMIX S70 BLADE
19 of 55 fields differ
- 14 different values
- 5 known for one only
- 8 the same
- 28 missing for both
Biggest differences
Each bar uses the scale of all 84 SSDs.
- EnduranceA: 600TBB: 1,480TBXPG is 880 TB higher.
- Read speedA: 5,000MB/sB: 7,400MB/sXPG is 2,400 MB/s higher.
- Write speedA: 4,800MB/sB: 6,800MB/sXPG is 2,000 MB/s higher.
Weight
0 to 150 g
All 63 fields
Every value links to where we found it.

General
4 of 9 differ
Series
Not available
Model numbers
SP250GBP44UD9005, SP500GBP44UD9005, SP500GBP44UD9005AY, SP01KGBP44UD9005, SP01KGBP44UD9005AY, SU01KGBP44UD9005SN, SP02KGBP44UD9005, SP02KGBP44UD9005AY, SP04KGBP44UD9005, SP04KGBP44UD9005AY1Maker product pagesilicon-power.com/product-detail/PCIe-Gen4-x4-UD90-2280Read 14 October 2026The P/N table lists SP250GBP44UD9005, SP500GBP44UD9005 and its AY twin, SP01KGBP44UD9005 with its AY and SN twins, SP02KGBP44UD9005 and its AY twin, and SP04KGBP44UD9005 with its AY twin. Silicon Power does not say what AY and SN mean9Spec databasebuildcores.com/products/Storage/zdilema3v/Silicon-Power-UD90-2TB-SSD-M.2-2280-PCIe-4.0-x4-NVMeRead 14 October 2026Lists SP02KGBP44UD9005, SP02KGBP44UD9005AY and SU02KGBP44UD9005SN. The SN part is not on the Silicon Power page and is not stored
AGAMMIXS70B-512G-CS, AGAMMIXS70B-1T-CS, AGAMMIXS70B-2T-CS, AGAMMIXS70B-4T-CS, AGAMMIXS70B-8000G-CS1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/844Read 15 October 2026Ordering information: AGAMMIXS70B-8000G-CS, AGAMMIXS70B-4T-CS, AGAMMIXS70B-2T-CS, AGAMMIXS70B-1T-CS and AGAMMIXS70B-512G-CS
GTIN / EAN
4713436149507, 8865760676129Spec databasebuildcores.com/products/Storage/zdilema3v/Silicon-Power-UD90-2TB-SSD-M.2-2280-PCIe-4.0-x4-NVMeRead 14 October 20262TB listing: UPC 886576067612 and EAN 4713436149507
4711085936219, 4711085933065, 4711085933072, 4711085937858, 47110859455251Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/844Read 15 October 2026Ordering information EAN Code column: 4711085945525 (8000GB), 4711085937858 (4TB), 4711085933072 (2TB), 4711085933065 (1TB), 4711085936219 (512GB)
Announced
20 May 20224Press releasesp-siliconpower.com/blogs/news/the-new-ud90-pcie-4-0-ssd-fuels-the-speed-to-succeedRead 14 October 2026Silicon Power's launch release is datelined Taipei, May 20st, 2022 (sic). This copy is a Silicon Power US blog post republished in 20235Press articlefunkykit.com/news/silicon-power-announces-ud90-pcie-4-0-ssdRead 14 October 2026Funky Kit reposted the release on 20 May 2022
Status
Predecessor
Not available
Not available
Successor
Not available
Not available
Launch price (US)
From $94.991Maker product pagesilicon-power.com/product-detail/PCIe-Gen4-x4-UD90-2280Read 14 October 20263Maker spec sheet (PDF)silicon-power.com/document/ssd_tbwRead 14 October 20266Reviewtomshardware.com/reviews/silicon-power-ud90-ssd-reviewRead 14 October 20267Reviewpcper.com/2023/02/silicon-power-pcie-gen-4x4-ud90-1tb-nvme-ssd-review-excellent-valueRead 14 October 20268Reviewservethehome.com/silicon-power-ud90-4tb-nvme-ssd-reviewRead 14 October 20269Spec databasebuildcores.com/products/Storage/zdilema3v/Silicon-Power-UD90-2TB-SSD-M.2-2280-PCIe-4.0-x4-NVMeRead 14 October 2026
Launch price (EU)
Not available
Not available
Markets
Not available
Not available
Colours
Not available
Not available
Form factor
Capacity
250 GB, 500 GB, 1 TB, 2 TB, 4 TB1Maker product pagesilicon-power.com/product-detail/PCIe-Gen4-x4-UD90-2280Read 14 October 2026Capacity row reads 250GB, 500GB, 1TB, 2TB, 4TB2Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ud90-2280Read 14 October 2026Capacity: 250GB, 500GB, 1TB, 2TB, 4TB
512 GB, 1,024 GB, 2,048 GB, 4,096 GB, 8 TB1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/844Read 15 October 2026Capacities line: 512GB / 1TB(1024GB) / 2TB(2048GB) / 4TB(4096GB) / 8TB(8000GB). XPG prints 1024, 2048 and 4096 GB for the TB models and 8000 GB for the top model, so those literal GB values are stored. The 2048GB model is the base
Interface
0 of 5 differ
Interface
PCIe generation
PCIe lanes
NVMe version
1.41Maker product pagesilicon-power.com/product-detail/PCIe-Gen4-x4-UD90-2280Read 14 October 2026Supports NVMe 1.42Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ud90-2280Read 14 October 2026Gen4 x4 and NVMe 1.48Reviewservethehome.com/silicon-power-ud90-4tb-nvme-ssd-reviewRead 14 October 2026CrystalDiskInfo confirms PCIe 4.0 x4 and NVMe 1.4
Detachable cable
Not available
Not available
Hardware
3 of 7 differ
Controller
Phison E21T6Reviewtomshardware.com/reviews/silicon-power-ud90-ssd-reviewRead 14 October 2026Phison E21T, the first drive Tom's tested with it. Four channels and DRAM-less7Reviewpcper.com/2023/02/silicon-power-pcie-gen-4x4-ud90-1tb-nvme-ssd-review-excellent-valueRead 14 October 2026Phison E21 (PS5021-E21T) controller, DRAM-less8Reviewservethehome.com/silicon-power-ud90-4tb-nvme-ssd-reviewRead 14 October 2026Phison PS5021-E21T
Flash type
Not available
TLC5Reviewthessdreview.com/our-reviews/nvme/xpg-gammix-s70-blade-reviewRead 15 October 2026Review, 2021-09-09: four Micron 176-layer 3D NAND TLC packages, two on each side, plus two DDR4 DRAM chips. XPG states only 3D NAND, so the flash maker and layer count are not stored (see the APH Networks note)6Reviewaphnetworks.com/reviews/xpg-gammix-s70-blade-1tb/2Read 15 October 2026APH Networks 1TB review, page 2: Micron 3D TLC flash chips on both sides, two Samsung DDR4 chips, InnoGrit Rainier IG5236 controller. APH calls the flash 96-layer, while TheSSDReview, HotHardware and TweakTown call it 176-layer. Because the layer count conflicts and later production may use other flash, flash maker and layers are left out
Flash memory
Not available
Not available
Flash layers
Not available
Not available
DRAM cache
None, uses host memory (HMB)1Maker product pagesilicon-power.com/product-detail/PCIe-Gen4-x4-UD90-2280Read 14 October 2026Supports Host Memory Buffer (HMB). The maker does not say there is no DRAM chip. Reviewers found none2Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ud90-2280Read 14 October 2026Supports NVMe 1.4 and Host Memory Buffer (HMB)6Reviewtomshardware.com/reviews/silicon-power-ud90-ssd-reviewRead 14 October 2026Spec table reads No (HMB). No DRAM on the board
DRAM cache size
Not available
Not available
Component sides
Not available
Not available
Performance
4 of 4 differ
Sequential read (claimed)
5,000MB/s1Maker product pagesilicon-power.com/product-detail/PCIe-Gen4-x4-UD90-2280Read 14 October 2026Performance Read (max.): 250GB 4,700 MB/s and 5,000 MB/s for 500GB, 1TB, 2TB and 4TB. Footnote: performance varies by system and capacity. No test host is named2Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ud90-2280Read 14 October 2026Up to 5000MB/s. Per-capacity values are on the product page
Sequential write (claimed)
4,800MB/s1Maker product pagesilicon-power.com/product-detail/PCIe-Gen4-x4-UD90-2280Read 14 October 2026Performance Write (max.): 250GB 1,500, 500GB 2,700, 1TB 4,800, 2TB 4,800 and 4TB 4,500 MB/s. The 2022 launch figures were 4,800 read and 4,200 write for the 1TB and 250GB write was 1,950 in 2023. Today's page is stored2Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ud90-2280Read 14 October 2026Up to 4800MB/s. Footnote: read and write vary by system performance and capacity
Random 4K read (claimed)
Not available
Random 4K write (claimed)
Not available
Endurance and reliability
2 of 3 differ
Endurance (TBW)
MTBF or MTTF (claimed)
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
Not available
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
1 of 4 differ
Heatsink
RGB lighting
Not available
Not available
Dust and water rating
Not available
Not available
Drop test height
Not available
Not available
Security and software
2 of 2 differ
Security
Not available
Software
ADATA SSD ToolBox3Maker product pagexpg.com/us/xpg/830Read 15 October 2026Description tab: SSD Toolbox. XPG's FAQ calls it ADATA's SSD ToolBox. The tab also lists NVMe 1.4, Dynamic SLC Caching with DRAM Cache Buffer, AES 256-bit encryption, Works with PS5 and a 5-year warranty7Reviewfunkykit.com/reviews/storage/adata-xpg-gammix-s70-blade-2tb-m-2-pcie-4-0-ssd-review/2Read 15 October 2026Funky Kit 2TB review, page 2: ADATA provides the SSD ToolBox software for diagnostics, performance checks, optimisation, firmware updates and cloning. The pack contains the SSD and a thin aluminum heat sink
Compatibility
1 of 1 differ
Platforms
Dimensions and weight
2 of 2 differ
Dimensions
Length80Width22Height3.5mm(3.1 × 0.9 × 0.1 in)1Maker product pagesilicon-power.com/product-detail/PCIe-Gen4-x4-UD90-2280Read 14 October 202622.0mm x 80.0mm x 3.5mm. Stored as length 80, width 22 and height 3.52Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ud90-2280Read 14 October 202622.0mm x 80.0mm x 3.5mm
Length80Width22Height4.3mm(3.1 × 0.9 × 0.2 in)1Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/844Read 15 October 2026Dimensions (L x W x T): 80 x 22 x 4.3 mm with heatsink and 80 x 22 x 3.3 mm without
In the box
None of 2 known
In the box
Not available
Not available
Cables included
Not available
Not available
Links
Not compared
Product page
www.silicon-power.com/product-detail/PCIe-Gen4-x4-UD90-22801Maker product pagesilicon-power.com/product-detail/PCIe-Gen4-x4-UD90-2280Read 14 October 2026Silicon Power global page for the 2280 drive. The UD90 is also sold as a 2230 drive, which is a separate product
www.xpg.com/us/xpg/8302Maker product pagexpg.com/us/xpg/830Read 15 October 2026XPG US product page for the GAMMIX S70 BLADE. Its spec tab (read on the UK path) agrees with the 2024 sheet: IG5236 controller, 7,400/6,800 MB/s, 750K/750K IOPS, 80 x 22 x 4.3 mm with heatsink, 11 g, MTBF 2,000,000 hours, 5-year limited warranty and 1,480 TB for the 2TB model. Its capacity row still reads 1TB / 2TB and is older than the sheet. The claims were tested on an ASRock X570 Taichi with a Ryzen 7 5800X and CrystalDiskMark 7.0.0
Spec sheet
www.silicon-power.com/download-detail/edm-ud90-22802Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ud90-2280Read 14 October 2026SP UD90 2280 datasheet, e-DM issued on Jul. 7, 2026, one page
regard.ru/api/site/files/goodspdf/download/8441Maker spec sheet (PDF)regard.ru/api/site/files/goodspdf/download/844Read 15 October 2026XPG GAMMIX S70 BLADE spec sheet, PDF created 2024-05-31, hosted by the retailer Regard. It lists 512GB, 1TB, 2TB, 4TB and 8000GB. The 2021 sheets on cdn.iceshop.nl list only 1TB and 2TB (March 2021, 7400/6400 MB/s) or 512GB to 2TB (November 2021). The newest sheet is used
Manual
Not available
Not available
EPREL registration number
Not available
Not available
Warranty
0 of 1 differ
Manufacturer warranty (source market)
5years1Maker product pagesilicon-power.com/product-detail/PCIe-Gen4-x4-UD90-2280Read 14 October 20265-year limited warranty. The warranty is based on the TBW or the warranty period. Market not named2Maker spec sheet (PDF)silicon-power.com/download-detail/edm-ud90-2280Read 14 October 20265-year limited warranty















