Quick Answer
To hit 240 fps in Expedition 33 at 4K on the Arc B580, run Low with XeSS Performance plus Frame Generation and turn down Lumen global illumination and high shadows. The Arc B580 (12GB) needs aggressive tuning to approach 240 fps at 4K with these tweaks, and a 550W PSU powers the card comfortably.
Expedition 33 4K Settings That Hit 240 fps
Clair Obscur: Expedition 33 leans on UE5's Lumen, so lowering global illumination and shadow quality gives the biggest frame-rate gains. For 240 fps at 4K, start at Low with XeSS Performance plus Frame Generation. The biggest frame-rate levers are Lumen global illumination and high shadows, so drop those one or two notches first. Turn off motion blur and depth of field, which cost performance for little visual gain. The Arc B580 is a budget card built on enough VRAM (12GB) for 4K in this turn-based RPG.
Why Upscaling and Frame Pacing Matter
At 4K targeting 240 fps, XeSS upscaling is essential on the Arc B580; native rendering cannot reach this frame rate. Use XeSS Performance plus Frame Generation to bridge the gap, and accept that this is the Arc B580's ceiling for Expedition 33. Cap the frame rate a few frames below 240 so frame pacing stays even rather than spiking and dipping around the target.
SA Build Pairing and PSU
Pair the Arc B580 with a Ryzen 5 7600 or Core i5-12400F and 16GB RAM so the CPU never holds back Expedition 33; 32GB helps if you stream or keep many apps open. A 550W PSU powers the Arc B580 with headroom, and a single 8-pin connector covers most models in this class. At Evetech the Arc B580 sits in the budget GPU tier, making it a sensible match for 4K gaming in South Africa.
FAQ
Can the Arc B580 run Expedition 33 at 4K 240 fps?
Yes, with tuned settings. Running Low with XeSS Performance plus Frame Generation and lowering Lumen global illumination and high shadows lets the Arc B580 needs aggressive tuning to approach 240 fps at 4K in Expedition 33.
What settings give the biggest frame-rate boost in Expedition 33?
Lowering Lumen global illumination and high shadows gives the largest gains, and turning off motion blur and depth of field adds a few frames for little visual loss. XeSS upscaling does the rest.
What PSU does a Arc B580 build need?
A 550W PSU powers the Arc B580 comfortably with headroom for the rest of the build. Most models use a single 8-pin power connector in this class.
Pro Tip
Lower Lumen global illumination and high shadows first and enable XeSS on the Arc B580; that combination is the fastest route to 240 fps in Expedition 33 at 4K without flattening the image.