The Crucial X9 4TB Portable SSD - Up to 1050MB/s Read - PC and Mac, Lightweight and small - USB 3.2 External Solid State Drive - CT4000X9SSD9 costs $0.1706/GB while the Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) costs $0.0874/GB. Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) offers 49% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Crucial X9 4TB Portable SSD - Up to 1050MB/s Read - PC and Mac, Lightweight and small - USB 3.2 External Solid State Drive - CT4000X9SSD9 vs Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) — Which Is Better Value?
Specification Comparison
| Spec | Crucial X9 4TB Portable SSD - Up to 1050MB/s Read - PC and Mac, Lightweight and small - USB 3.2 External Solid State Drive - CT4000X9SSD9 | Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) |
|---|---|---|
| Brand | Crucial | Silicon Power |
| Capacity | 4TB | 4TB |
| $/GB | $0.1706 | $0.0874 |
| Price | $682.23 | $349.79 |
| Retailer | Newegg | Newegg |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | ssd | ssd |
Price Across Retailers
Crucial X9 4TB Portable SSD - Up to 1050MB/s Read - PC and Mac, Lightweight and small - USB 3.2 External Solid State Drive - CT4000X9SSD9
Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE)
Which Should You Buy?
Based on current pricing data, the Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) offers better value at $0.0874//GB compared to the Crucial X9 4TB Portable SSD - Up to 1050MB/s Read - PC and Mac, Lightweight and small - USB 3.2 External Solid State Drive - CT4000X9SSD9 at $0.1706//GB — that's roughly 49% less per gigabyte.
The best deal for the Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) is $349.79 at Newegg, while the Crucial X9 4TB Portable SSD - Up to 1050MB/s Read - PC and Mac, Lightweight and small - USB 3.2 External Solid State Drive - CT4000X9SSD9 starts at $682.23 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 4TB Portable SSD - Up to 1050MB/s Read - PC and Mac, Lightweight and small - USB 3.2 External Solid State Drive - CT4000X9SSD9 and Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) product page for detailed specifications and price history.
Frequently Asked Questions
Is Crucial X9 4TB Portable SSD - Up to 1050MB/s Read - PC and Mac, Lightweight and small - USB 3.2 External Solid State Drive - CT4000X9SSD9 or Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) a better deal?
As of June 2026, Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) offers better value at $0.0874//GB compared to Crucial X9 4TB Portable SSD - Up to 1050MB/s Read - PC and Mac, Lightweight and small - USB 3.2 External Solid State Drive - CT4000X9SSD9 at $0.1706//GB. That is approximately 49% better value per gigabyte.
What is the price per GB of Crucial X9 4TB Portable SSD - Up to 1050MB/s Read - PC and Mac, Lightweight and small - USB 3.2 External Solid State Drive - CT4000X9SSD9?
The Crucial X9 4TB Portable SSD - Up to 1050MB/s Read - PC and Mac, Lightweight and small - USB 3.2 External Solid State Drive - CT4000X9SSD9 is currently priced at $0.1706/GB ($682.23 for 4TB) at Newegg.
Where can I buy Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) for the cheapest price?
The cheapest price for the Silicon Power 4TB SSD 3D NAND A55 SLC Cache Performance Boost SATA III 2.5' 7mm (0.28') SSD Internal Solid State Drive (SU004TBSS3A55S25NE) is $349.79 at Newegg, which works out to $0.0874/GB.