https://wccftech.com/ipad-air-4-has-4gb-ram/

Apple has made it a habit not to reveal the amount of memory present in its products and the iPad Air 4 is no exception. The exception here is that it’s the first tablet from the company in nine years to feature a new chipset before the iPhone family gets treated to it, which in this case, is the A14 Bionic. A fresh benchmark leak of the iPad Air 4 earlier revealed that it’s no slouch in the performance department, and possibly the only thing holding it back would be the lack of memory. Fortunately, for a capable iPad, Apple decided to give it a fair amount of treatment, for the price it’s charging.

Though the Geekbench leak revealed that the A14 Bionic running in the iPad Air 4 will make very short work of the Snapdragon 865, Snapdragon 865 Plus, and the Exynos 990, there are more details you should know. For instance, the iPad Air 4 features 4GB of RAM, though it’s unclear if Apple is using the LPDDR4x or LPDDR5 standard. Regardless, this much memory means that the iPad Air 4 sports the same amount as the 2018 iPad Pro (not the 1TB version), but not as much as the 6GB RAM found in the 2020 iPad Pro models.