Streaming , CPU vs GPU Encoding in 2026

Short answer

Use NVENC (HEVC or AV1) on Nvidia AV1 on AMD RDNA 4 (AMF) or QSV AV1 on Intel Arc / integrated Xe. Only use x264 CPU encoding if you have a dedicated streaming PC.

Why hardware encoding won in 2026

NVENC (Blackwell) AMF (RDNA 4) and QSV (Intel Arc) all support AV1 with quality that matches or beats x264 slow preset at half the bitrate. They also run on dedicated silicon so they do not steal frames from the CPU.

In 2020 x264 still had a small quality edge. In 2026 it is behind at the bitrates Twitch and YouTube actually allow.

Bitrate targets

• Twitch (H.264 required 8 Mbps max) , NVENC H.264 quality preset. Stay under 6 Mbps for reliability.
• Twitch beta HEVC/AV1 , NVENC AV1 6 Mbps.
• YouTube 1080p60 , NVENC AV1 12 Mbps.
• YouTube 1440p60 , NVENC AV1 18 Mbps.
• Local recording , NVENC HEVC CQP 20 VBR max 60 Mbps.

OBS settings that matter

1. Set the encoder preset to P5 (Slow) on NVENC , it is nearly free in CPU cost.

2. Enable Look-ahead and Psycho Visual Tuning.

3. Keyframe interval 2 seconds.

4. Profile High level Auto.

The single-PC bottleneck

If you stream and game on the same PC the GPU is doing both jobs. On a 5070 Ti or better NVENC + gaming costs about 3-5 FPS. On a 5060 expect 8-12 FPS loss.

A CPU with 12+ cores handling audio chat alerts and browser sources helps 1% lows more than a faster GPU does.

Two-PC setup

If your income depends on the stream a second PC with a capture card and x264 medium preset on a 9950X3D still produces the highest quality result. Overkill for hobby streamers.

FAQ

Can I use AV1 on Twitch today? In select regions and via the enhanced broadcasting beta yes. Fully public rollout is expected in 2026.

Does OBS record and stream at the same time cost double? Only if you use two separate encoders. Use the "record stream" option to reuse the same encode.