ADATA vs Western Digital Hard Drives (HDD)

Side-by-side price per gigabyte comparison across 297 products.

As of August 2026, ADATA averages $0.0982/GB across 14 products while Western Digital averages $0.0773/GB across 283 products on BuyPerUnit. Western Digital offers 21% better value per gigabyte for hard drives (hdd).

ADATA

Avg $/GB$0.0982

Best $/GB$0.0472

Price Range$0.0472 – $0.1775

Products14

Cheapest Product

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

5TB · $236.07 · newegg

Western Digital

Better Value

Avg $/GB$0.0773

Best $/GB$0.0265

Price Range$0.0265 – $1.5000

Products283

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	ADATA	5TB AData HD710 Pro USB3.1 2.5-inch Portable Hard Drive (Black)	5TB	$0.0472	$236.07	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	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	$0.0625	$124.99	amazon
2	Western Digital	WD Elements 18TB USB 3.0 Desktop External Hard Drive NE-WDBWLG0180HBK-NESN Black	18TB	$0.0342	$614.99	newegg
3	ADATA	ADATA 2TB HD720 Waterproof / Dustproof / Shockproof External Hard Drive USB 3.0 Model AHD720-2TU3-CBL Blue	2TB	$0.0670	$134.00	newegg
3	Western Digital	WD 14TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Backup Software - WDBBGB0140HBK-NESN	14 TB	$0.0342	$478.55	amazon
4	ADATA	ADATA 4TB HD710 Pro Portable Hard Drive USB 3.1 Model AHD710P-4TU31-CBK Black	4TB	$0.0681	$272.58	newegg
4	Western Digital	WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4)	18TB	$0.0342	$615.95	newegg
5	ADATA	ADATA 4TB HD710P Portable Hard Drive USB 3.1 Model AHD710P-4TU31-CBK Black	4TB	$0.0684	$273.41	newegg
5	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

Which Should You Buy?

Based on current pricing data, Western Digital offers better overall value for hard drives (hdd) at an average of $0.0773/GB compared to ADATA's $0.0982/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 ADATA's cheapest option is the 5TB AData HD710 Pro USB3.1 2.5-inch Portable Hard Drive (Black) (5TB) at $0.0472/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 Western Digital cheaper per GB for hard drives (hdd)?

As of August 2026, Western Digital averages $0.0773/GB compared to ADATA at $0.0982/GB. Western Digital is approximately 21% cheaper per gigabyte on average.

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

BuyPerUnit currently tracks 14 ADATA products and 283 Western Digital 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 $0.0472/GB ($236.07 for 5TB).

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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