Intel LGA1156 Heatsink fan for Core i7-880 i7-875K i7-870S i7-870 i7-860S i7-860 | eBay
Relative CPU performance compared to Elden Ring requirements, take this with a large grain of salt because likely a slower CPU will do just fine : r/Eldenring
Intel i5-8400 CPU Review: 2666MHz & 3200MHz Gaming Benchmarks | GamersNexus - Gaming PC Builds & Hardware Benchmarks
i5 8400 (3.9GHz) vs i7 4790K (4.7GHz) OC | Which is a better for money...??? - YouTube
Review: Intel Core i7-8700K and Core i5-8400 (14nm Coffee Lake) - CPU - HEXUS.net - Page 11