ADATA vs Silicon Power Hard Drives (HDD)

Side-by-side price per gigabyte comparison across 19 products.

As of July 2026, ADATA averages $0.0942/GB across 11 products while Silicon Power averages $0.0979/GB across 8 products on BuyPerUnit. ADATA offers 4% better value per gigabyte for hard drives (hdd).

ADATA

Better Value

Avg $/GB$0.0942

Best $/GB$0.0430

Price Range$0.0430 – $0.1690

Products11

Cheapest Product

5TB AData HD710 Pro USB3.1 2.5-inch Portable Hard Drive (Black)

5TB · $214.92 · newegg

Silicon Power

Avg $/GB$0.0979

Best $/GB$0.0582

Price Range$0.0582 – $0.1760

Products8

Cheapest Product

4TB Silicon Power Armor A60 Shockproof Portable Hard Drive - USB3.2 - All-Black Edition

4TB · $232.99 · newegg

Top Products Compared

Rank	Brand	Product	Capacity	$/GB	Price	Retailer
1	ADATA	5TB AData HD710 Pro USB3.1 2.5-inch Portable Hard Drive (Black)	5TB	$0.0430	$214.92	newegg
1	Silicon Power	4TB Silicon Power Armor A60 Shockproof Portable Hard Drive - USB3.2 - All-Black Edition	4TB	$0.0582	$232.99	newegg
2	ADATA	ADATA HD710 Pro - 2 TB External Hard Drive - Shockproof, Waterproof & Dustproof - Durable Storage - For Gamers, Students & Professionals - Mac, PC & Linux Compatible - Black - AHD710P-2TU31-CBK	2 TB	$0.0565	$112.99	amazon
2	Silicon Power	5TB Silicon Power Armor A60 Shockproof Portable Hard Drive - USB3.0 - Black/Green Edition	5TB	$0.0600	$299.99	newegg
3	ADATA	ADATA HD710 Pro - 2 TB External Hard Drive - Shockproof, Waterproof & Dustproof - Durable Storage - For Gamers, Students & Professionals - Mac, PC & Linux Compatible - Blue - AHD710P-2TU31-CBL	2 TB	$0.0600	$120.00	amazon
3	Silicon Power	Silicon Power 4TB Armor A60 IPX4 Water-resistant and Shockproof Portable Hard Drive USB 3.1 Gen1 Model SP040TBPHDA60S3K Black	4TB	$0.0822	$328.99	newegg
4	ADATA	ADATA 2TB HD720 Waterproof / Dustproof / Shockproof External Hard Drive USB 3.0 Model AHD720-2TU3-CBL Blue	2TB	$0.0675	$135.00	newegg
4	Silicon Power	Silicon Power 2TB Armor A60 Shockproof and Water-Resistant Portable Hard Drive USB 3.0 Model SP020TBPHDA60S3K Black	2TB	$0.0865	$172.99	newegg
5	ADATA	ADATA 2TB HV320 Portable Hard Drive USB 3.2 Gen1 Model AHV320-2TU31-CBK Black	2TB	$0.0684	$136.90	newegg
5	Silicon Power	2TB Silicon Power Armor A60 Shockproof Portable Hard Drive - USB3.2 - All-Black Edition	2TB	$0.0865	$172.99	newegg

Which Should You Buy?

Based on current pricing data, ADATA offers better overall value for hard drives (hdd) at an average of $0.0942/GB compared to Silicon Power's $0.0979/GB — that's roughly 4% less per gigabyte.

ADATA's best deal is the 5TB AData HD710 Pro USB3.1 2.5-inch Portable Hard Drive (Black) (5TB) at $0.0430/GB, while Silicon Power's cheapest option is the 4TB Silicon Power Armor A60 Shockproof Portable Hard Drive - USB3.2 - All-Black Edition (4TB) at $0.0582/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 Silicon Power cheaper per GB for hard drives (hdd)?

As of July 2026, ADATA averages $0.0942/GB compared to Silicon Power at $0.0979/GB. ADATA is approximately 4% cheaper per gigabyte on average.

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

BuyPerUnit currently tracks 11 ADATA products and 8 Silicon Power 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 $0.0430/GB ($214.92 for 5TB).

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 $0.0582/GB ($232.99 for 4TB).

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