Seagate vs Silicon Power Hard Drives (HDD)

Side-by-side price per gigabyte comparison across 257 products.

As of June 2026, Seagate averages $0.1353/GB across 251 products while Silicon Power averages $0.0889/GB across 6 products on BuyPerUnit. Silicon Power offers 34% better value per gigabyte for hard drives (hdd).

Seagate

Avg $/GB$0.1353
Best $/GB$0.0222
Price Range$0.0222 – $3.1289
Products251

Silicon Power

Better Value
Avg $/GB$0.0889
Best $/GB$0.0592
Price Range$0.0592 – $0.1340
Products6

Top Products Compared

Which Should You Buy?

Based on current pricing data, Silicon Power offers better overall value for hard drives (hdd) at an average of $0.0889/GB compared to Seagate's $0.1353/GB — that's roughly 34% less per gigabyte.

Silicon Power's best deal is the 4TB Silicon Power Armor A60 Shockproof Portable Hard Drive - USB3.2 - All-Black Edition (4TB) at $0.0592/GB, while Seagate's cheapest option is the Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black (18TB) at $0.0222/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 Seagate or Silicon Power cheaper per GB for hard drives (hdd)?

As of June 2026, Silicon Power averages $0.0889/GB compared to Seagate at $0.1353/GB. Silicon Power is approximately 34% cheaper per gigabyte on average.

How many Seagate and Silicon Power hard drives (hdd) does BuyPerUnit track?

BuyPerUnit currently tracks 251 Seagate products and 6 Silicon Power products in the hard drives (hdd) category, all ranked by price per gigabyte.

What is the cheapest Seagate hard drives (hdd) per GB?

The cheapest Seagate option is the Seagate One Touch 18TB USB 3.0 / USB Type-C Hard Drives - Desktop External Black at $0.0222/GB ($399.00 for 18TB).

What is the cheapest Silicon Power hard drives (hdd) per GB?

The cheapest Silicon Power option is the 4TB Silicon Power Armor A60 Shockproof Portable Hard Drive - USB3.2 - All-Black Edition at $0.0592/GB ($236.99 for 4TB).

Explore More

Submit a Better Deal

Help others save money

Report an Issue

Help us keep data accurate