ADATA vs Unionsine Hard Drives & SSDs
Side-by-side price per gigabyte comparison across 6 products.
As of March 2026, ADATA averages $0.2355/GB across 4 products while Unionsine averages $0.0665/GB across 2 products on BuyPerUnit. Unionsine offers 72% better value per gigabyte for hard drives & ssds.
ADATA
Unionsine
Better ValueCheapest Product
UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black)500 GB · $30.73 · amazon
Top Products Compared
| Rank | Brand | Product | Capacity | $/GB | Price | Retailer |
|---|---|---|---|---|---|---|
| 1 | ADATA | ADATA Ultimate SU650 Solid State Drive - 1TB Internal SSD - 2.5" SATA 6Gb/s - PC Upgrade - High-Speed, Secure Data Storage - Advanced Error Correction - Desktop Compatible - ASU650SS-1TT-R | 1 TB | $0.1150 | $115.00 | amazon |
| 1 | Unionsine | UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) | 500 GB | $0.0615 | $30.73 | amazon |
| 2 | ADATA | ADATA SU650 512GB 3D-NAND SATA 2.5 inch Internal SSD (ASU650SS-512GT-R) | 512GB | $0.1738 | $88.99 | newegg |
| 2 | Unionsine | UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Pink) | 500 GB | $0.0715 | $35.73 | amazon |
| 3 | ADATA | ADATA SC735 External SSD - 2TB USB 3.2 Gen2 Portable Solid State Drive for Gaming & High Speed Data Transfer - Up to 1050/1000MB/s - MIL-STD Drop Resistant - Black/Grey - 1 Count | 2 TB | $0.1881 | $376.12 | amazon |
| 4 | ADATA | 256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0 | 256GB | $0.4653 | $119.11 | newegg |
Which Should You Buy?
Based on current pricing data, Unionsine offers better overall value for hard drives & ssds at an average of $0.0665/GB compared to ADATA's $0.2355/GB — that's roughly 72% less per gigabyte.
Unionsine's best deal is the UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) (500 GB) at $0.0615/GB, while ADATA's cheapest option is the ADATA Ultimate SU650 Solid State Drive - 1TB Internal SSD - 2.5" SATA 6Gb/s - PC Upgrade - High-Speed, Secure Data Storage - Advanced Error Correction - Desktop Compatible - ASU650SS-1TT-R (1 TB) at $0.1150/GB.
However, price per GB isn't everything — consider factors like warranty, performance specs, and your specific capacity needs. Check individual product pages for detailed specifications.
Frequently Asked Questions
Is ADATA or Unionsine cheaper per GB for hard drives & ssds?
As of March 2026, Unionsine averages $0.0665/GB compared to ADATA at $0.2355/GB. Unionsine is approximately 72% cheaper per gigabyte on average.
How many ADATA and Unionsine hard drives & ssds does BuyPerUnit track?
BuyPerUnit currently tracks 4 ADATA products and 2 Unionsine products in the hard drives & ssds category, all ranked by price per gigabyte.
What is the cheapest ADATA hard drives & ssd per GB?
The cheapest ADATA option is the ADATA Ultimate SU650 Solid State Drive - 1TB Internal SSD - 2.5" SATA 6Gb/s - PC Upgrade - High-Speed, Secure Data Storage - Advanced Error Correction - Desktop Compatible - ASU650SS-1TT-R at $0.1150/GB ($115.00 for 1 TB).
What is the cheapest Unionsine hard drives & ssd per GB?
The cheapest Unionsine option is the UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) at $0.0615/GB ($30.73 for 500 GB).