This build starts with the MSI RTX 5070 Ti 16GB because at 4K in Red Dead Redemption, the graphics card is doing the vast majority of the heavy lifting. Its 16GB of VRAM provides headroom for high-resolution textures and generous draw distances without running into memory pressure, and its support for DLSS 3.7 means you can use intelligent upscaling to maintain smooth frame pacing without sacrificing the visual clarity that makes 4K worthwhile. The Ryzen 7 7800X3D pairs well here because Red Dead Redemption's engine still leans on CPU performance during dense town scenes, AI encounters, and scripted sequences where stutters can ruin a story moment. The 3D V-Cache architecture gives this chip an edge in exactly those simulation-limited scenarios without requiring an overly expensive or power-hungry platform. With 32GB of DDR5-6000 memory on a reliable ASUS B650 motherboard, the system has fast, modern RAM that keeps the platform responsive without overspending on capacity you will not use for a single-player game. A 1TB NVMe SSD handles fast loading and the initial shader compilation that the port performs on first runs. The 850W power supply gives plenty of headroom for the GPU's power draw, and the Thermalright cooler keeps the CPU thermals in check without noise complaints. Overall, this is a balanced 4K gaming PC that prioritizes where Red Dead Redemption actually depends on hardware while avoiding wasted spending on components that would not improve your experience in this particular game at this resolution.