The SanDisk - 4TB Extreme Portable SSD, up to 2000MB/s with USB Type-C, IP65 water /dust resistance, up to 3-meter drop protection - Black costs $0.2300/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 62% better value per gigabyte as of May 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SanDisk - 4TB Extreme Portable SSD, up to 2000MB/s with USB Type-C, IP65 water /dust resistance, up to 3-meter drop protection - 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 - 4TB Extreme Portable SSD, up to 2000MB/s with USB Type-C, IP65 water /dust resistance, up to 3-meter drop protection - 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 | $0.2300 | $0.0875 |
| Price | $919.99 | $349.97 |
| Retailer | Best Buy | Amazon |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | ssd | ssd |
Price Across Retailers
SanDisk - 4TB Extreme Portable SSD, up to 2000MB/s with USB Type-C, IP65 water /dust resistance, up to 3-meter drop protection - 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)
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 - 4TB Extreme Portable SSD, up to 2000MB/s with USB Type-C, IP65 water /dust resistance, up to 3-meter drop protection - Black at $0.2300//GB — that's roughly 62% 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 - 4TB Extreme Portable SSD, up to 2000MB/s with USB Type-C, IP65 water /dust resistance, up to 3-meter drop protection - Black starts at $919.99 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 - 4TB Extreme Portable SSD, up to 2000MB/s with USB Type-C, IP65 water /dust resistance, up to 3-meter drop protection - 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 - 4TB Extreme Portable SSD, up to 2000MB/s with USB Type-C, IP65 water /dust resistance, up to 3-meter drop protection - 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 - 4TB Extreme Portable SSD, up to 2000MB/s with USB Type-C, IP65 water /dust resistance, up to 3-meter drop protection - Black at $0.2300//GB. That is approximately 62% better value per gigabyte.
What is the price per GB of SanDisk - 4TB Extreme Portable SSD, up to 2000MB/s with USB Type-C, IP65 water /dust resistance, up to 3-meter drop protection - Black?
The SanDisk - 4TB Extreme Portable SSD, up to 2000MB/s with USB Type-C, IP65 water /dust resistance, up to 3-meter drop protection - Black is currently priced at $0.2300/GB ($919.99 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.