Seagate Storage Expansion Card 1TB
Score: 69/100
WD_BLACK SN770
Score: 80/100Rankings
The WD_BLACK SN770 2TB is a DRAM-less PCIe Gen4 SSD delivering up to 5150 MB/s reads and 4850 MB/s writes with a robust 1200 TBW endurance. Its budget-friendly price and low power draw come at the cost of no onboard DRAM and no included heatsink, which can limit sustained performance under heavy loads. Ideal for gamers and mainstream builders seeking fast sequential performance without the 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 GB | 2,000 GBbest | |
820 MB/s | 5,150 MB/sbest | |
664 MB/s | 4,850 MB/sbest | |
30,219 IOPS | 650,000 IOPSbest | |
684 IOPS | 800,000 IOPSbest | |
— | 1,200 TBbest | |
128 MBbest | 0 MB | |
3 years | 5 yearsbest |
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 NVMe 1.4 |
Performance(5) | ||
Sequential Read Speed (MB/s) | 820 MB/s | 5150 MB/s |
Sequential Write Speed (MB/s) | 664 MB/s | 4850 MB/s |
Random Read IOPS (4K) (IOPS) | 30219 IOPS | 650000 IOPS |
Random Write IOPS (4K) (IOPS) | 684 IOPS | 800000 IOPS |
DRAM Cache (MB) | 128 MB | 0 MB |
Storage(1) | ||
Storage Capacity (GB) | 1024 GB | 2000 GB |
General(1) | ||
Warranty (years) | 3 years | 5 years |
Design & Build(3) | ||
Form Factor | Proprietary Card | M.2 2280 |
Weight (g) | 30 g | 5.5 g |
Dimensions (L×W×H) (mm) | 80x23.4x8.9 mm | 80x22x2.4 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.”
“Fast game loading and smooth performance in PCs/PlayStation 5”
Professional reviewers regard the WD_BLACK SN770 as a compelling budget-friendly PCIe Gen4 SSD that punches above its weight class, delivering flagship-like sequential speeds and solid endurance while keeping costs low. They commend its value, fast load times, and low power draw, but warn that the DRAM-less design and lack of a heatsink could limit sustained performance in demanding scenarios.
General users praise the drive for its rapid game loading, smooth everyday performance, and easy installation, seeing it as a solid value for a 2 TB capacity. Recurring concerns revolve around thermal throttling without a heatsink and occasional slowdowns during long write operations, especially for those expecting flagship-level consistency.
