ADATA vs Seagate Hard Drives & SSDs

Side-by-side price per gigabyte comparison across 47 products.

As of March 2026, ADATA averages $0.2355/GB across 4 products while Seagate averages $0.0638/GB across 43 products on BuyPerUnit. Seagate offers 73% better value per gigabyte for hard drives & ssds.

ADATA

Avg $/GB$0.2355

Best $/GB$0.1150

Price Range$0.1150 – $0.4653

Products4

Cheapest Product

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 · $115.00 · amazon

Seagate

Better Value

Avg $/GB$0.0638

Best $/GB$0.0244

Price Range$0.0244 – $0.2400

Products43

Cheapest Product

Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400)

8 TB · $195.31 · 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	Seagate	Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400)	8 TB	$0.0244	$195.31	amazon
2	ADATA	ADATA SU650 512GB 3D-NAND SATA 2.5 inch Internal SSD (ASU650SS-512GT-R)	512GB	$0.1738	$88.99	newegg
2	Seagate	Seagate - Game Drive for Xbox 8TB External USB 3.2 Gen 1 Desktop Hard Drive with Certified Xbox Green LED Lighting - Black	8 TB	$0.0250	$199.99	bestbuy
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
3	Seagate	Seagate - Barracuda 8TB Internal Hard Drive for Desktops	8 TB	$0.0250	$199.99	bestbuy
4	ADATA	256GB AData Premier Extreme SD Express Card SDXC PCIe Gen3 UHS-I U3 SD7.0	256GB	$0.4653	$119.11	newegg
4	Seagate	Seagate - IronWolf Pro 16TB NAS Internal Hard Drive with Rescue Data Recovery Services	16 TB	$0.0250	$399.99	bestbuy
5	Seagate	Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004)	8 TB	$0.0250	$199.99	amazon

Which Should You Buy?

Based on current pricing data, Seagate offers better overall value for hard drives & ssds at an average of $0.0638/GB compared to ADATA's $0.2355/GB — that's roughly 73% less per gigabyte.

Seagate's best deal is the Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) (8 TB) at $0.0244/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 Seagate cheaper per GB for hard drives & ssds?

As of March 2026, Seagate averages $0.0638/GB compared to ADATA at $0.2355/GB. Seagate is approximately 73% cheaper per gigabyte on average.

How many ADATA and Seagate hard drives & ssds does BuyPerUnit track?

BuyPerUnit currently tracks 4 ADATA products and 43 Seagate 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 Seagate hard drives & ssd per GB?

The cheapest Seagate option is the Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) at $0.0244/GB ($195.31 for 8 TB).

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