SanDisk vs Seagate Hard Drives & SSDs

Side-by-side price per gigabyte comparison across 161 products.

As of March 2026, SanDisk averages $1.3778/GB across 118 products while Seagate averages $0.0642/GB across 43 products on BuyPerUnit. Seagate offers 95% better value per gigabyte for hard drives & ssds.

SanDisk

Avg $/GB$1.3778

Best $/GB$0.0925

Price Range$0.0925 – $47.8109

Products118

Cheapest Product

SANDISK - 8TB Desk Drive USB Type-C Desktop External SSD - Black

8 TB · $739.99 · bestbuy

Seagate

Better Value

Avg $/GB$0.0642

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 · $195.35 · amazon

Top Products Compared

Rank	Brand	Product	Capacity	$/GB	Price	Retailer
1	SanDisk	SANDISK - 8TB Desk Drive USB Type-C Desktop External SSD - Black	8 TB	$0.0925	$739.99	bestbuy
1	Seagate	Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400)	8 TB	$0.0244	$195.35	amazon
2	SanDisk	SANDISK - Extreme Portable 4TB External USB-C NVMe SSD - Black	4 TB	$0.1125	$449.99	bestbuy
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	SanDisk	SanDisk 4TB Extreme Portable SSD - Up to 1050MB/s, USB-C, USB 3.2 Gen 2, IP65 Water and Dust Resistance, Updated Firmware - External Solid State Drive - SDSSDE61-4T00-G25	4 TB	$0.1125	$449.99	amazon
3	Seagate	Seagate - Barracuda 8TB Internal Hard Drive for Desktops	8 TB	$0.0250	$199.99	bestbuy
4	SanDisk	SANDISK - 2TB Creator Phone SSD External USB Type C Drive with Magsafe Compatibility for iPhone 15/16 - Blue	2 TB	$0.1150	$229.99	bestbuy
4	Seagate	Seagate - IronWolf Pro 16TB NAS Internal Hard Drive with Rescue Data Recovery Services	16 TB	$0.0250	$399.99	bestbuy
5	SanDisk	SanDisk 2TB Portable SSD - Up to 800MB/s, USB-C, USB 3.2 Gen 2, Updated Firmware - External Solid State Drive - SDSSDE30-2T00-G26	2 TB	$0.1163	$232.57	amazon
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 $0.0642/GB compared to SanDisk's $1.3778/GB — that's roughly 95% 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 SanDisk's cheapest option is the SANDISK - 8TB Desk Drive USB Type-C Desktop External SSD - Black (8 TB) at $0.0925/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 SanDisk or Seagate cheaper per GB for hard drives & ssds?

As of March 2026, Seagate averages $0.0642/GB compared to SanDisk at $1.3778/GB. Seagate is approximately 95% cheaper per gigabyte on average.

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

BuyPerUnit currently tracks 118 SanDisk products and 43 Seagate products in the hard drives & ssds category, all ranked by price per gigabyte.

What is the cheapest SanDisk hard drives & ssd per GB?

The cheapest SanDisk option is the SANDISK - 8TB Desk Drive USB Type-C Desktop External SSD - Black at $0.0925/GB ($739.99 for 8 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 ($195.35 for 8 TB).

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