Hgst vs Unionsine Hard Drives & SSDs
Side-by-side price per gigabyte comparison across 4 products.
As of March 2026, Hgst averages $0.0794/GB across 2 products while Unionsine averages $0.0665/GB across 2 products on BuyPerUnit. Unionsine offers 16% better value per gigabyte for hard drives & ssds.
Hgst
Cheapest Product
HGST Deskstar E7K1000 HDE721010SLA330 1 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 32 MB Buffer - Hot Swappable DISC PROD SPCL SOURCING SEE...1TB · $65.00 · newegg
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 | Hgst | HGST Deskstar E7K1000 HDE721010SLA330 1 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 32 MB Buffer - Hot Swappable DISC PROD SPCL SOURCING SEE... | 1TB | $0.0650 | $65.00 | newegg |
| 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 | Hgst | HGST HTS543232A7A384 Travelstar Z5K320 HTS543232A7A384 320 GB Hard Drive - 2.5' Internal - SATA (SATA/300) | 320GB | $0.0938 | $30.00 | 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 |
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 Hgst's $0.0794/GB — that's roughly 16% 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 Hgst's cheapest option is the HGST Deskstar E7K1000 HDE721010SLA330 1 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 32 MB Buffer - Hot Swappable DISC PROD SPCL SOURCING SEE... (1TB) at $0.0650/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 Hgst or Unionsine cheaper per GB for hard drives & ssds?
As of March 2026, Unionsine averages $0.0665/GB compared to Hgst at $0.0794/GB. Unionsine is approximately 16% cheaper per gigabyte on average.
How many Hgst and Unionsine hard drives & ssds does BuyPerUnit track?
BuyPerUnit currently tracks 2 Hgst products and 2 Unionsine products in the hard drives & ssds category, all ranked by price per gigabyte.
What is the cheapest Hgst hard drives & ssd per GB?
The cheapest Hgst option is the HGST Deskstar E7K1000 HDE721010SLA330 1 TB 3.5' Internal Hard Drive - SATA - 7200rpm - 32 MB Buffer - Hot Swappable DISC PROD SPCL SOURCING SEE... at $0.0650/GB ($65.00 for 1TB).
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).