Silicon Power vs Western Digital Hard Drives (HDD)

Side-by-side price per gigabyte comparison across 270 products.

As of July 2026, Silicon Power averages $0.0979/GB across 8 products while Western Digital averages $0.0774/GB across 262 products on BuyPerUnit. Western Digital offers 21% better value per gigabyte for hard drives (hdd).

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

Western Digital

Better Value

Avg $/GB$0.0774

Best $/GB$0.0265

Price Range$0.0265 – $1.0829

Products262

Cheapest Product

WD2003FYYS-18W0B0 - DELL WD2003FYYS-18W0B0 DELL 2TB 7.2K 3G LFF SATA HARD DRIVE

2TB · $52.95 · newegg

Top Products Compared

Rank	Brand	Product	Capacity	$/GB	Price	Retailer
1	Silicon Power	4TB Silicon Power Armor A60 Shockproof Portable Hard Drive - USB3.2 - All-Black Edition	4TB	$0.0582	$232.99	newegg
1	Western Digital	WD2003FYYS-18W0B0 - DELL WD2003FYYS-18W0B0 DELL 2TB 7.2K 3G LFF SATA HARD DRIVE	2TB	$0.0265	$52.95	newegg
2	Silicon Power	5TB Silicon Power Armor A60 Shockproof Portable Hard Drive - USB3.0 - Black/Green Edition	5TB	$0.0600	$299.99	newegg
2	Western Digital	WD 20TB Elements Desktop External Hard Drive, USB 3.0 drive for plug-and-play storage - WDBWLG0200HBK-NESN	20 TB	$0.0350	$700.35	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
3	Western Digital	WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4)	18TB	$0.0353	$635.07	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
4	Western Digital	WD Ultrastar DC HC550 16TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38462 (WUH721816ALE6L4)	16TB	$0.0374	$599.00	newegg
5	Silicon Power	2TB Silicon Power Armor A60 Shockproof Portable Hard Drive - USB3.2 - All-Black Edition	2TB	$0.0865	$172.99	newegg
5	Western Digital	WD Blue WD120EAGZ 12TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive	12TB	$0.0375	$449.99	newegg

Which Should You Buy?

Based on current pricing data, Western Digital offers better overall value for hard drives (hdd) at an average of $0.0774/GB compared to Silicon Power's $0.0979/GB — that's roughly 21% less per gigabyte.

Western Digital's best deal is the WD2003FYYS-18W0B0 - DELL WD2003FYYS-18W0B0 DELL 2TB 7.2K 3G LFF SATA HARD DRIVE (2TB) at $0.0265/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 Silicon Power or Western Digital cheaper per GB for hard drives (hdd)?

As of July 2026, Western Digital averages $0.0774/GB compared to Silicon Power at $0.0979/GB. Western Digital is approximately 21% cheaper per gigabyte on average.

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

BuyPerUnit currently tracks 8 Silicon Power products and 262 Western Digital products in the hard drives (hdd) category, all ranked by price per gigabyte.

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).

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

The cheapest Western Digital option is the WD2003FYYS-18W0B0 - DELL WD2003FYYS-18W0B0 DELL 2TB 7.2K 3G LFF SATA HARD DRIVE at $0.0265/GB ($52.95 for 2TB).

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