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 $0.0933/GB while the WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe costs $0.1500/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 38% better value per gigabyte as of May 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 WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe — Which Is Better Value?
WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe
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 | WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe |
|---|---|---|
| Brand | Crucial | Western Digital |
| Capacity | 4 TB | 4 TB |
| $/GB | $0.0933 | $0.1500 |
| Price | $373.29 | $599.99 |
| Retailer | Amazon | Best Buy |
| 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
WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe
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 $0.0933//GB compared to the WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe at $0.1500//GB — that's roughly 38% 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 $373.29 at Amazon, while the WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe starts at $599.99 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 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 WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe 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 WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe a better deal?
As of May 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 $0.0933//GB compared to WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe at $0.1500//GB. That is approximately 38% 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 $0.0933/GB ($373.29 for 4 TB) at Amazon.
Where can I buy WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe for the cheapest price?
The cheapest price for the WD - BLACK SN850X 4TB Internal SSD PCIe Gen 4 x4 NVMe is $599.99 at Best Buy, which works out to $0.1500/GB.