The Glyph Atom EX20 SSD stands out in the crowded external storage market, offering top-tier performance with USB 3.2x2 (20Gbps) speeds—if paired with the right cable. However, its steep pricing and reliance on a high-quality cable to unlock full potential introduce practical challenges for users weighing cost against speed.
Design-wise, the EX20 is built with a rugged silicone jacket that provides a secure grip, adding both durability and aesthetic appeal. Its 7.5-ounce weight and compact dimensions (4.4 inches long, 2.4 inches wide, and nearly an inch thick) make it one of the more substantial external SSDs on the market, reflecting its premium positioning.
Performance is where the EX20 shines, but only when using a Thunderbolt or high-quality Type-C cable. The included cable fails to deliver consistent speeds, capping writes at 50-80MBps instead of the expected 20Gbps. This issue has been observed in other high-speed SSDs, underscoring the importance of cable selection for peak performance.
- Capacity: 1TB, 2TB, 4TB, 8TB
- Interface: USB 3.2x2 (20Gbps)
- Cable Dependency: Requires Thunderbolt or premium Type-C cable for full speed
- Warranty: 3 years (2 years data recovery, 1 year replacement)
- Estimated TBW: ~600TB (writes only)
- Price (when reviewed):
- 1TB: $310
- 2TB: $420
- 4TB: $700
- 8TB: $1,500
The price of the EX20 is notably high, especially for a 20Gbps SSD. Comparable performance can be achieved with less expensive alternatives, such as the OWC 1M2 enclosure paired with an NVMe SSD, which offers similar speeds at a fraction of the cost. The Glyph Atom EX40, a 40Gbps variant, may also present a better value for users willing to invest in higher bandwidth.
For power users who prioritize speed and can afford the premium, the EX20 delivers exceptional performance—once cable issues are resolved. However, its cost and dependency on external hardware make it a niche product, suitable only for those with specific high-speed storage needs or deep pockets.
