1. Design Comparison:
Both Samsung UA75CU8000 and UA75AU8000 boast sleek and premium designs, perfectly suited for various interior settings. They share a similar T-shaped inverted stand design placed at both ends, ensuring stability on surfaces.
In terms of dimensions, the Samsung UA75AU8000 measures 3.1cm in thickness, while the UA75CU8000 is slightly slimmer at 2.8cm. Both smart TVs have a bezel thickness of 0.9cm.

2. Display Comparison:
Both of these 4K smart TVs excel in image display with impressive contrast ratios. They both deliver deep, accurate blacks, creating an enticing viewing experience even in dark rooms.
The HDR brightness on both Samsung TVs isn't exceptional. However, in comparison, the UA75AU8000 tends to perform slightly better than the UA75CU8000. When it comes to HDR gaming, though, the Samsung UA75CU8000 exhibits slightly better brightness. Meanwhile, SDR brightness on both 75-inch Samsung TVs is relatively consistent, adequate for overcoming glare in rooms and displaying content clearly to viewers.

In terms of color reproduction, the Samsung UA75CU8000 demonstrates a slight edge even though both have coverage from the DCI-P3 color space. Essentially, they both present vibrant colors when enjoying HDR content.
The viewing angles on these 4K Samsung TVs are somewhat limited. When viewers shift off-center by 38 degrees, the Samsung UA75AU8000 begins to lose optimal brightness and dims, while the UA75CU8000 starts dimming at a 34-degree angle. Hence, neither are suitable for wide guest areas.
On the bright side, both the Samsung UA75CU8000 and UA75AU8000 handle reflections impressively. Even in rooms with intense sunlight or electric light, they maintain clear and gentle content display for viewers' comfort.
3. Samsung 4K 75-inch Smart TVs UA75CU8000 vs UA75AU8000: Operating System and Features Comparison
Both the 75-inch Samsung 4K Smart TVs UA75CU8000 and UA75AU8000 utilize Samsung's Tizen operating system. However, the version on the UA75CU8000 model will be the latest update. Nevertheless, the interfaces of both are quite similar, making menu navigation easy and convenient for user experience.

In terms of features and smart utilities, the 75-inch Samsung TV UA75AU8000 lacks the Multi View feature – viewing multiple contents simultaneously like on the Samsung UA75CU8000.
4. Samsung 4K 75-inch Smart TVs UA75CU8000 vs UA75AU8000: Remote Control
The remote controls of both these 75-inch Samsung Smart TVs have compact, easy-to-hold, and user-friendly designs. The most noticeable difference is that the remote for the Samsung UA75CU8000 TV supports charging via USB-C or solar energy. This helps reduce battery waste in the environment. Meanwhile, the remote for the Samsung UA75CU8000 series still uses standard AAA batteries.
5. Choosing Between Samsung 4K 75-inch Smart TVs UA75CU8000 and UA75AU8000
The Samsung 4K 75-inch Smart TV UA75CU8000 is the TV of 2023, with a reference price of about 29,900,000 VND.
Meanwhile, the Samsung 4K Crystal UHD 85-inch Smart TV UA85AU8000, released in 2021, has a reference price of 24,900,000 VND.
Although the newer Samsung 4K 75-inch Smart TV UA75CU8000 is more expensive, it brings a more modern and sophisticated TV with advanced features.
On the other hand, the Samsung 4K 75-inch Smart TV UA75AU8000 has a lower price tag and remarkably sharp display quality.