What FPS will I get in Left 4 Dead 2 at 1440p?

At 1440p Ultra native, expect around 0 FPS. With DLSS Quality you can push higher.

Does GeForce RTX 4090 TUF GAMING OC support DLSS or FSR in Left 4 Dead 2?

Left 4 Dead 2 does not currently support upscalers.

Yes — the GeForce RTX 4090 TUF GAMING OC runs Left 4 Dead 2 at approximately 0 FPS at 1080p Ultra (native, no upscaling).

✕No — Too Weak

Expected: 0 FPS @ 1080p Ultra (native). This GeForce RTX 4090 TUF GAMING OC is currently $3595.00 at Newegg ↗