DOOM Eternal is one of the fastest first-person shooters on PC, built on id Tech 7 with Vulkan rendering that favors GPU performance while staying surprisingly efficient on the CPU side. You spend nearly every second dashing, double-jumping, swapping weapons, and lining up shots on demons that close distance aggressively. When frame pacing stutters or input feels sluggish, the entire rhythm of combat breaks down—especially on higher difficulties or in Battlemode PvP. For a high FPS PC build, the practical demands go beyond just pushing more frames per second. You need a CPU that can handle the simulation and culling without introducing micro-stalls, a GPU with enough headroom to keep frame delivery consistent during heavy particle explosions and dynamic lighting, and fast memory to support the tight scheduling that high-refresh play requires. DOOM Eternal scales predictably with GPU power, but many players overlook how much things like texture streaming and VRAM pressure can spike when the game loads new demon models, projectile effects, and environmental detail mid-fight. An NVMe SSD eliminates the worst texture pop-in issues. If you are wondering what PC you need for high FPS in DOOM Eternal, the answer is a balanced system where the graphics card, processor, memory, and storage all work together—not just a single flagship component surrounded by budget parts.