The Crucial X9 Pro 4TB Portable SSD - Up to 1050MB/s read and write - water and dust resistant, PC and Mac - USB 3.2 External Solid State Drive -... costs $0.1187/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 $0.0825/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 31% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Crucial X9 Pro 4TB Portable SSD - Up to 1050MB/s read and write - water and dust resistant, PC and Mac - USB 3.2 External Solid State Drive -... 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 | Crucial X9 Pro 4TB Portable SSD - Up to 1050MB/s read and write - water and dust resistant, PC and Mac - USB 3.2 External Solid State Drive -... | 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 | Crucial | SP Silicon Power |
| Capacity | 4TB | 4 TB |
| $/GB | $0.1187 | $0.0825 |
| Price | $474.90 | $329.97 |
| Retailer | Newegg | Amazon |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | ssd | ssd |
Price Across Retailers
Crucial X9 Pro 4TB Portable SSD - Up to 1050MB/s read and write - water and dust resistant, PC and Mac - USB 3.2 External Solid State Drive -...
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 $0.0825//GB compared to the Crucial X9 Pro 4TB Portable SSD - Up to 1050MB/s read and write - water and dust resistant, PC and Mac - USB 3.2 External Solid State Drive -... at $0.1187//GB — that's roughly 31% 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 $329.97 at Amazon, while the Crucial X9 Pro 4TB Portable SSD - Up to 1050MB/s read and write - water and dust resistant, PC and Mac - USB 3.2 External Solid State Drive -... starts at $474.90 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Crucial X9 Pro 4TB Portable SSD - Up to 1050MB/s read and write - water and dust resistant, PC and Mac - USB 3.2 External Solid State Drive -... 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 Crucial X9 Pro 4TB Portable SSD - Up to 1050MB/s read and write - water and dust resistant, PC and Mac - USB 3.2 External Solid State Drive -... 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 June 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 $0.0825//GB compared to Crucial X9 Pro 4TB Portable SSD - Up to 1050MB/s read and write - water and dust resistant, PC and Mac - USB 3.2 External Solid State Drive -... at $0.1187//GB. That is approximately 31% better value per gigabyte.
What is the price per GB of Crucial X9 Pro 4TB Portable SSD - Up to 1050MB/s read and write - water and dust resistant, PC and Mac - USB 3.2 External Solid State Drive -...?
The Crucial X9 Pro 4TB Portable SSD - Up to 1050MB/s read and write - water and dust resistant, PC and Mac - USB 3.2 External Solid State Drive -... is currently priced at $0.1187/GB ($474.90 for 4TB) at Newegg.
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 $329.97 at Amazon, which works out to $0.0825/GB.