The Apple iMac (Retina 5K, 27-inch, 2020) with the model number A2115 and the specifications Core i5 / 8GB / 512GB / Radeon Pro 5500XT offers a powerful and high-resolution computing experience. Here are the key specifications: 

• Model: Apple iMac (Retina 5K, 27-inch, 2020)
• Model Number: A2115
• Processor: Core i5 (specific generation not specified)
• Memory (RAM): 8GB
• Storage: 512GB (SSD, assumed)
• Graphics: Radeon Pro 5500XT
• Display: Retina 5K, 27-inch display
• Resolution: 5120 x 2880 pixels
• Operating System: macOS (specific version not specified)

These specifications suggest a high-performance system suitable for tasks such as content creation, graphic design, and more. The inclusion of a Retina 5K display ensures a vibrant and detailed visual experience.