Seagate Storage Expansion Card 1TB
Score: 69/100
Crucial P3 Plus 1TB
Score: 73/100Rankings
The Crucial P3 Plus 1TB is a budget-oriented PCIe 4.0 NVMe SSD that offers blazing sequential read speeds and a large pSLC cache for fast burst writes, delivering strong first-impression performance. Its DRAM-less design and limited random IOPS cause latency and throttling once the cache is depleted, making it less suitable for sustained heavy-write workloads. It is best for gamers and general users who want Gen4 speeds without a premium price.
The Seagate Storage Expansion Card for Xbox Series X|S adds up to 4 TB of native-speed storage via a PCIe Gen4 x4 NVMe interface. Its performance is slightly lower than the theoretical maximum and it works only with the Xbox Series X|S ecosystem. Best for gamers who need seamless expansion without cables.
| Attribute | | |
|---|---|---|
1,024 GBbest | 1,000 GB | |
820 MB/s | 5,000 MB/sbest | |
664 MB/sbest | — | |
30,219 IOPS | 164,000 IOPSbest | |
684 IOPS | 65,000 IOPSbest | |
— | 220 TBbest | |
— | 1,500,000 hoursbest | |
128 MBbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Connectivity(1) | ||
Interface | PCIe Gen4 x4 NVMe | PCIe Gen4 x4 |
Performance(4) | ||
Sequential Read Speed (MB/s) | 820 MB/s | 5000 MB/s |
Sequential Write Speed (MB/s) | 664 MB/s | 3600-4200 MB/s |
Random Read IOPS (4K) (IOPS) | 30219 IOPS | 164000 IOPS |
Random Write IOPS (4K) (IOPS) | 684 IOPS | 65000 IOPS |
Storage(1) | ||
Storage Capacity (GB) | 1024 GB | 1000 GB |
General(1) | ||
Warranty (years) | 3 years | 5 years |
Design & Build(3) | ||
Form Factor | Proprietary Card | M.2 2280 |
Weight (g) | 30 g | 5.8 g |
Dimensions (L×W×H) (mm) | 80x23.4x8.9 mm | 80.01×2.29×22.10 mm mm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the Seagate Expansion Card as the only true plug-and-play solution that delivers PCIe Gen4 performance and full Xbox Velocity Architecture integration, matching the console's internal SSD for optimized games. They commend its seamless installation, high capacities, and ability to run next-gen titles without transfers, while noting that real-world speeds fall short of the PCIe Gen4 ceiling and that the product's exclusivity and premium price limit its broader appeal.
Everyday users consistently highlight the card's ease of installation and the immediate boost in available storage, especially for large open-world games. Quick Resume reliability and the compact, cable-free form factor receive strong praise. Recurring concerns revolve around limited capacity on lower-tier models, the inability to use the card on other platforms, and occasional heat during prolonged sessions.
“Matches internal SSD speeds for optimized games, Quick Resume, and load times, delivering near-native performance.”
“Benchmark read speeds (~738 MB/s) are lower than the theoretical maximum of PCIe Gen4, potentially limiting peak performance.”
Professional reviewers commend the P3 Plus for its impressive sequential throughput and aggressive pricing, especially the 64K write performance that outpaces many QLC competitors. However, they consistently point out its weak random IOPS, high latency, and the drawbacks of a DRAM-less architecture, which cause sustained write speeds to tumble once the cache is exhausted. Overall, they view it as a solid budget Gen4 option for bursty workloads but not a contender for performance-critical or heavy-write scenarios.
Everyday users love the noticeable speed boost in booting, app loading, and large file transfers, often describing the experience as "very snappy" and a "massive jump" from SATA or HDD setups. Recurring complaints focus on performance throttling after the cache fills, heat concerns without a heatsink, and disappointment with random small-file speed, especially for VDI or database-type tasks.
