ADATA vs Seagate Hard Drives (HDD)
Side-by-side price per gigabyte comparison across 278 products.
As of June 2026, ADATA averages $0.0873/GB across 14 products while Seagate averages $0.1667/GB across 264 products on BuyPerUnit. ADATA offers 48% better value per gigabyte for hard drives (hdd).
ADATA
Better ValueCheapest Product
5TB AData HD710 Pro USB3.1 2.5-inch Portable Hard Drive (Black)5TB · $216.71 · newegg
Seagate
Cheapest Product
seagate archive hdd 8tb sata 6gbps 128mb cache sata hard drive (st8000as0002)8TB · $195.00 · newegg
Top Products Compared
Which Should You Buy?
Based on current pricing data, ADATA offers better overall value for hard drives (hdd) at an average of $0.0873/GB compared to Seagate's $0.1667/GB — that's roughly 48% less per gigabyte.
ADATA's best deal is the 5TB AData HD710 Pro USB3.1 2.5-inch Portable Hard Drive (Black) (5TB) at $0.0433/GB, while Seagate's cheapest option is the seagate archive hdd 8tb sata 6gbps 128mb cache sata hard drive (st8000as0002) (8TB) at $0.0244/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 Seagate cheaper per GB for hard drives (hdd)?
As of June 2026, ADATA averages $0.0873/GB compared to Seagate at $0.1667/GB. ADATA is approximately 48% cheaper per gigabyte on average.
How many ADATA and Seagate hard drives (hdd) does BuyPerUnit track?
BuyPerUnit currently tracks 14 ADATA products and 264 Seagate products in the hard drives (hdd) category, all ranked by price per gigabyte.
What is the cheapest ADATA hard drives (hdd) per GB?
The cheapest ADATA option is the 5TB AData HD710 Pro USB3.1 2.5-inch Portable Hard Drive (Black) at $0.0433/GB ($216.71 for 5TB).
What is the cheapest Seagate hard drives (hdd) per GB?
The cheapest Seagate option is the seagate archive hdd 8tb sata 6gbps 128mb cache sata hard drive (st8000as0002) at $0.0244/GB ($195.00 for 8TB).