SanDisk vs Sp Silicon Power Hard Drives & SSDs

Side-by-side price per gigabyte comparison across 169 products.

As of March 2026, SanDisk averages $1.1078/GB across 159 products while Sp Silicon Power averages $0.1534/GB across 10 products on BuyPerUnit. Sp Silicon Power offers 86% better value per gigabyte for hard drives & ssds.

SanDisk

Avg $/GB$1.1078

Best $/GB$0.0925

Price Range$0.0925 – $47.8109

Products159

Cheapest Product

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

8 TB · $739.99 · bestbuy

Sp Silicon Power

Better Value

Avg $/GB$0.1534

Best $/GB$0.0900

Price Range$0.0900 – $0.2304

Products10

Cheapest Product

SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25)

4 TB · $359.97 · 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	Sp Silicon Power	SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25)	4 TB	$0.0900	$359.97	amazon
2	SanDisk	SANDISK - Extreme Portable 4TB External USB-C NVMe SSD - Black	4 TB	$0.1125	$449.99	bestbuy
2	Sp Silicon Power	Silicon Power 2TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") SSD Internal Solid State Drive (SU002TBSS3A55S25EC)	2 TB	$0.1100	$219.97	amazon
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	Sp Silicon Power	Silicon Power 2TB NVMe M.2 PCIe Gen3x4 2280 SSD Solid State Drive (SP002TBP34A60M28)	2 TB	$0.1350	$269.97	amazon
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	Sp Silicon Power	Silicon Power 1TB A55 M.2 SATA M+B Key SSD Internal Solid State Drive 2280 SU001TBSS3A55M28AB	1 TB	$0.1400	$139.97	amazon
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	Sp Silicon Power	SP 1TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5" 7mm (0.28") Internal Solid State Drive (SP001TBSS3A55S25)	1 TB	$0.1440	$143.97	amazon

Which Should You Buy?

Based on current pricing data, Sp Silicon Power offers better overall value for hard drives & ssds at an average of $0.1534/GB compared to SanDisk's $1.1078/GB — that's roughly 86% less per gigabyte.

Sp Silicon Power's best deal is the SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) (4 TB) at $0.0900/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 Sp Silicon Power cheaper per GB for hard drives & ssds?

As of March 2026, Sp Silicon Power averages $0.1534/GB compared to SanDisk at $1.1078/GB. Sp Silicon Power is approximately 86% cheaper per gigabyte on average.

How many SanDisk and Sp Silicon Power hard drives & ssds does BuyPerUnit track?

BuyPerUnit currently tracks 159 SanDisk products and 10 Sp Silicon Power 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 Sp Silicon Power hard drives & ssd per GB?

The cheapest Sp Silicon Power option is the SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) at $0.0900/GB ($359.97 for 4 TB).

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