The Delkin 633X U3 is an incredibly fast UHS-I SD memory card and gives even the top brands like Kingston and Sandisk a run for their money. The Delkin 633X is often in the top of the list with the in-camera memory card speed tests and Delkin is a very reliable and trusted brand. This makes the Delkin 633X a great buy for those looking for an alternative to the Sandisk Extreme Pro.
Delkin 633X U3 UHS-I Memory Card Sizes
The Delkin 633X is available in all sizes from 8GB to 512GBs and is easy to find on both BHPhoto and Amazon.
| Memory Card Name | 16GB | 32GB | 64GB | 128GB | 256GB | 512GB |
| Delkin 633X Memory Card | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| B&H | B&H | B&H | B&H | B&H | B&H |
Real World Memory Card Performance
Read and write speeds are fantastic with the Delkin 633X. The read speed on par with the best UHS-I memory cards out there and the write speeds just slightly lags behind the top cards from Sandisk and Kingston. I’m talking like 1 megabyte per second slower, an insignificant difference really.
In-camera performance usually lands the Delkin 633X at the top of the charts for a UHS-I cards.
All around it’s a great card from a brand you can trust.
| Memory Card Name | USB 3.0 Read | USB 3.0 Write |
| Delkin 633XÂ SD Memory Card | 98.3 MB/S | 88.7 MB/S |
Compatibility
Speed Class: Class 10 / U3
UHS-I devices
Reliability
Limited Lifetime Warranty
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