Practical Example: Which Desktop to Buy?

Another scenario: Lorry is a YouTube content creator and frequently deals with large MP4 (video) files. She is looking for a computer where she can save the various MP4 files she is working on, without resorting to saving them on a cloud elsewhere outside the computer. Which of the following desktop computers meets her need?

	Desktop №1	Desktop №2	Desktop №3
Display	23'', LCD, 16:10, 3840 x 2160	20.5'', LED, 16:9, 2560 x 1440	27'', Curved, 21:9, 1920 x 1200
CPU	Intel i7, 4.3 GHz, 20 cores, 28 threads	AMD Ryzen 9, 4.9 GHz, 16 cores, 32 threads	Intel i9, 3.2 GHz, 24 cores, 32 threads
Cache	64KB L1, 28MB L2, 33MB L3	256KB L1, 4MB L2, 68MB L3	128KB L1, 20MB L2, 24MB L3
RAM	3200 MHz, 16GB, DDR4, 2Rx8	1700 MHz, 8GB, DDR3, 1Rx16	5600 MHz, 64GB, DDR5, 1Rx8
Storage	7000 RPM SATA 2TB HDD	SAS 850GB SSD	6500 RPM SCSI 1TB HDD

Which hardware component will you pay attention to in this scenario? Hint: the focus is on storing large files.