The Crucial X9 4TB Portable SSD, Up to 1050MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902 costs $0.0932/GB while the 4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0 costs $0.1975/GB. Crucial X9 4TB Portable SSD, Up to 1050MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902 offers 53% 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, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902 vs 4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0 — Which Is Better Value?
4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0
Specification Comparison
| Spec | Crucial X9 4TB Portable SSD, Up to 1050MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902 | 4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0 |
|---|---|---|
| Brand | Crucial | Western Digital |
| Capacity | 4 TB | 4TB |
| $/GB | $0.0932 | $0.1975 |
| Price | $372.84 | $789.99 |
| Retailer | Amazon | Newegg |
| Category | SSDs & NVMe Drives | SSDs & NVMe Drives |
| Subcategory | ssd | nvme |
Price Across Retailers
Crucial X9 4TB Portable SSD, Up to 1050MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902
4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0
Which Should You Buy?
Based on current pricing data, the Crucial X9 4TB Portable SSD, Up to 1050MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902 offers better value at $0.0932//GB compared to the 4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0 at $0.1975//GB — that's roughly 53% less per gigabyte.
The best deal for the Crucial X9 4TB Portable SSD, Up to 1050MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902 is $372.84 at Amazon, while the 4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0 starts at $789.99 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, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902 and 4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0 product page for detailed specifications and price history.
Frequently Asked Questions
Is Crucial X9 4TB Portable SSD, Up to 1050MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902 or 4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0 a better deal?
As of June 2026, Crucial X9 4TB Portable SSD, Up to 1050MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902 offers better value at $0.0932//GB compared to 4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0 at $0.1975//GB. That is approximately 53% better value per gigabyte.
What is the price per GB of Crucial X9 4TB Portable SSD, Up to 1050MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902?
The Crucial X9 4TB Portable SSD, Up to 1050MB/s, USB 3.2 USB-C, External Solid State Drive, Compatible with Windows, Mac, & Android, Reliable Storage for Games, Files, & Backups, Black - CT4000X9SSD902 is currently priced at $0.0932/GB ($372.84 for 4 TB) at Amazon.
Where can I buy 4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0 for the cheapest price?
The cheapest price for the 4TB* WD_BLACK SN8100 PCIe 5.0x4 NVMe M.2 SSD - WDS400T1X0M-00CMT0 is $789.99 at Newegg, which works out to $0.1975/GB.