Introduction

The SanDisk Extreme microSDXC UHS-I Memory Card (model number SDSQXA1-512G-GN6MA) promises blazing-fast speeds for capturing and transferring high-resolution photos and 4K video. Having put this 512GB card through its paces with various devices and applications, I’m ready to share my in-depth review. This review covers everything from its real-world performance in various scenarios to its build quality and overall value.

Features

This SanDisk Extreme card boasts impressive features designed for demanding users. The advertised read speeds of up to 160MB/s are a significant selling point, allowing for incredibly quick file transfers. The write speed of up to 90MB/s ensures smooth recording of 4K UHD video without interruption. The A2 rating means it’s optimized for Android devices, promising better app performance. The U3 and V30 speed classes ensure compatibility with high-resolution video recording and playback.

Performance

I tested the SDSQXA1-512G-GN6MA in a variety of situations, including 4K video recording on a GoPro Hero 11 Black, transferring large RAW image files from my DSLR, and using it as internal storage for my Android phone. The read speeds consistently met, and often exceeded, the advertised 160MB/s during file transfers. Write speeds were also impressive, only occasionally dipping below the 90MB/s mark during sustained 4K recording. I experienced no noticeable lag during video recording or app usage on my phone. The card remained remarkably cool even during prolonged periods of heavy use.

One specific test involved transferring a 20GB 4K video file; It took under 3 minutes as claimed – an excellent result. Furthermore, I experienced no data corruption or errors throughout the testing period. This consistent performance underscores the reliability of the SanDisk Extreme microSDXC card.

Pros & Cons

Pros:

• Exceptional read and write speeds
• Reliable performance under heavy load
• Excellent for 4K video recording
• A2 rating for optimized Android app performance
• Durable build quality

Cons:

• Price point is slightly higher than some competitors
• May not be necessary for users who don’t require ultra-high speeds

Final Verdict

The SanDisk Extreme microSDXC UHS-I Memory Card (SDSQXA1-512G-GN6MA) is a top-tier memory card that delivers on its promises. The blazing-fast speeds, reliable performance, and robust build quality make it an excellent choice for professionals and enthusiasts who demand the best. While the price is a bit premium, the performance justifies the cost for those who need seamless 4K video recording and lightning-fast file transfers. I highly recommend this card.