Microsoft has marketed their Surface Pro tablets as laptop replacements. Apple took years before they introduced the big-screen iPad Pro, but can it compare to the Surface Pro 4?

The iPad Pro is the largest tablet that Apple has created, aimed at business users, TechRadar reports. Although it is powerful, it lacks the power and performance of the Microsoft Surface Pro 4.

The Surface Pro 4 is designed to deliver a full-computer experience, similar to a laptop. Because of this, it uses the same processors that laptops use. The processor in the Surface Pro 4 can up upgraded all the way to an Intel Core i7. The iPad Pro still has a mobile processor, the Apple A9X and a mobile operating system, Apple iOS. The A9X is the only option for a processor in the iPad Pro.

For memory, the Surface Pro 4 offers several choices in RAM. The entry-level Surface Pro 4 starts at 4 GB of RAM, but it can be expanded up to 16 GB of RAM. The iPad Pro is only offered with 4 GB of RAM. This is disappointing for iPad Pro owners who want to run memory-heavy programs.

The amount of storage on the iPad Pro cannot compare to the Surface Pro 4. The iPad Pro is offered in either 32 GB or 128 GB options. The Surface Pro 4 starts at 256 GB of storage and goes all the way up to 1 TB.

Both tablets have excellent screens. The 12.9-inch screen on the iPad Pro displays 264 pixels per inch, while the 12.3-inch screen on the Surface Pro 4 displays 267 pixels per inch.

For performance, the iPad Pro is running iOS, which means a mobile experience, instead of a desktop experience. Additionally, the iPad Pro will only allow two programs to run side-by-side. With Windows 10, the Surface Pro 4 works more like a traditional laptop or desktop. This means multitasking and running full versions of programs rather than apps.

The entry-level Surface Pro 4 starts at $899.

The entry-level iPad Pro starts at $799.