The SANDISK - Extreme Pro Portable 4TB External USB-C NVMe SSD - Black costs $0.1625/GB while 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) costs $0.0875/GB. SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) offers 46% better value per gigabyte as of May 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SANDISK - Extreme Pro Portable 4TB External USB-C NVMe SSD - Black vs SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) — Which Is Better Value?
Specification Comparison
| Spec | SANDISK - Extreme Pro Portable 4TB External USB-C NVMe SSD - Black | SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) |
|---|---|---|
| Brand | SanDisk | SP Silicon Power |
| Capacity | 4 TB | 4 TB |
| $/GB | $0.1625 | $0.0875 |
| Price | $649.99 | $349.97 |
| Retailer | Best Buy | Amazon |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | ssd | ssd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, 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) offers better value at $0.0875//GB compared to the SANDISK - Extreme Pro Portable 4TB External USB-C NVMe SSD - Black at $0.1625//GB — that's roughly 46% less per gigabyte.
The best deal for 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) is $349.97 at Amazon, while the SANDISK - Extreme Pro Portable 4TB External USB-C NVMe SSD - Black starts at $649.99 at Best Buy.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each SANDISK - Extreme Pro Portable 4TB External USB-C NVMe SSD - Black and SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) product page for detailed specifications and price history.
Frequently Asked Questions
Is SANDISK - Extreme Pro Portable 4TB External USB-C NVMe SSD - Black or SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) a better deal?
As of May 2026, SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) offers better value at $0.0875//GB compared to SANDISK - Extreme Pro Portable 4TB External USB-C NVMe SSD - Black at $0.1625//GB. That is approximately 46% better value per gigabyte.
What is the price per GB of SANDISK - Extreme Pro Portable 4TB External USB-C NVMe SSD - Black?
The SANDISK - Extreme Pro Portable 4TB External USB-C NVMe SSD - Black is currently priced at $0.1625/GB ($649.99 for 4 TB) at Best Buy.
Where can I buy SP Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5'' 7mm (0.28'') Internal Solid State Drive (SP004TBSS3A55S25) for the cheapest price?
The cheapest price for 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) is $349.97 at Amazon, which works out to $0.0875/GB.