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 SanDisk - Optimus GX PRO 850X 4TB Internal SSD NVMe costs $0.3325/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 72% 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 SanDisk - Optimus GX PRO 850X 4TB Internal SSD NVMe — Which Is Better Value?
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 | SanDisk - Optimus GX PRO 850X 4TB Internal SSD NVMe |
|---|---|---|
| Brand | Crucial | SanDisk |
| Capacity | 4 TB | 4 TB |
| $/GB | $0.0932 | $0.3325 |
| Price | $372.84 | $1329.99 |
| 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
SanDisk - Optimus GX PRO 850X 4TB Internal SSD 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 $0.0932//GB compared to the SanDisk - Optimus GX PRO 850X 4TB Internal SSD NVMe at $0.3325//GB — that's roughly 72% 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 SanDisk - Optimus GX PRO 850X 4TB Internal SSD NVMe starts at $1329.99 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 SanDisk - Optimus GX PRO 850X 4TB Internal SSD 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 SanDisk - Optimus GX PRO 850X 4TB Internal SSD NVMe 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 SanDisk - Optimus GX PRO 850X 4TB Internal SSD NVMe at $0.3325//GB. That is approximately 72% 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 SanDisk - Optimus GX PRO 850X 4TB Internal SSD NVMe for the cheapest price?
The cheapest price for the SanDisk - Optimus GX PRO 850X 4TB Internal SSD NVMe is $1329.99 at Best Buy, which works out to $0.3325/GB.