NVENC vs x264 in 2026: Which Encoder Should You Use?

NVENC and x264 both compress video so you can stream or record it, but they use different hardware. x264 is a software encoder that runs on your CPU. NVENC is a dedicated encoder chip built into Nvidia GeForce RTX and GTX graphics cards. This guide explains how the two compare in quality, performance and codec support as of October 2026, including the RTX 50-series (Blackwell) cards, and suggests settings for OBS Studio.

The Short Answer

If you have an Nvidia RTX 20-series or newer card, use NVENC for live streaming. On these cards, NVENC H.264 quality is close to x264's "medium" preset, and it barely touches your CPU, so your game keeps its frame rate. x264 still makes sense for offline encodes where time does not matter, for very low bitrates where its slower presets keep a little more detail, and for systems without an Nvidia GPU.

How Software and Hardware Encoding Differ

x264 (software encoding) uses your CPU cores. Its presets run from "ultrafast" to "placebo". Slower presets look further ahead and use more B-frames, so they compress more efficiently, but they need far more CPU time. When people say x264 has the best quality, they usually mean the "medium" preset or slower. Most live streams can't run those in real time while a game is also using the CPU.

NVENC (hardware encoding) uses a fixed-function block on the GPU that is separate from the parts that render your game. Encoding therefore costs very little gaming performance and almost no CPU time. Older NVENC on GTX 10-series (Pascal) cards looked clearly worse than x264. Turing (RTX 20-series, 2018) changed that, and later generations have kept improving.

For more details, check out our guide on AI Likeness Protection or Data Risk? Why YouTube’s New Deepfake Tool Has Creators Worried.

How NVENC Has Changed: RTX 20-Series to RTX 50-Series

RTX 20 and RTX 30-Series (Turing and Ampere)

Turing brought in the encoder often called "new NVENC". Its H.264 quality is generally reported as equal to or better than x264 "medium". These cards encode H.264 and HEVC (H.265) and support B-frames in HEVC. They cannot encode AV1. RTX 30-series cards use essentially the same encoder generation for H.264 and HEVC.

RTX 40-Series (Ada Lovelace)

The RTX 40-series added hardware AV1 encoding. Higher-end models such as the RTX 4070 Ti, 4080 and 4090 have two NVENC units, which helps with high-resolution recording and with several encodes running at once. Comparisons published between 2023 and 2025 typically put NVENC H.264 on these cards within about 5 to 10 percent of x264 medium's bitrate at equal measured quality.

RTX 50-Series (Blackwell): The Current Generation

The RTX 50-series is Nvidia's current consumer line, so the RTX 40-series is no longer the newest. Nvidia says the ninth-generation NVENC in Blackwell:

• Improves AV1 and HEVC quality by about 5% (BD-BR PSNR) compared with the previous generation
• Adds 4:2:2 chroma encoding for H.264 and HEVC, a format used in professional camera workflows
• Adds an AV1 Ultra High Quality mode and multiview-HEVC (MV-HEVC) for 3D and VR video

The number of encoders depends on the model. The RTX 5090 has three NVENC units. The RTX 5080 and RTX 5070 Ti have two each. Nvidia says the extra encoders allow encoding at up to 8K90 or running more streams and recordings at the same time.

Which Nvidia Cards Encode AV1?

Only the RTX 40-series and RTX 50-series. RTX 20 and RTX 30-series cards encode H.264 and HEVC only, and GTX cards use older NVENC generations.

H.264, HEVC and AV1 Compared

Codec efficiency changes with the content and the encoder settings, so treat these figures as rough guides.

Performance and Quality in Practice

Impact While Gaming

x264: The encoder competes with your game for CPU time. Faster presets such as "veryfast" are the usual choice for live streaming because "medium" needs roughly three times the CPU. On CPU-heavy games this can cause encoding lag or dropped frames.

NVENC: The encoder chip works separately from the rendering cores, so CPU load stays low and the effect on frame rate is small. Higher NVENC presets and features such as look-ahead use a bit more GPU resources. That matters most when the GPU is already at full load.

Quality at Common Bitrates

Live streaming at around 6,000 kbps: In a realistic live setup, you are comparing NVENC on a high-quality preset with x264 "veryfast" or "faster". Here, RTX 20-series and newer NVENC usually comes out ahead on quality.

High-bitrate recording: At recording bitrates, both encoders look very good, and the difference is hard to see.

Low bitrates and offline encodes: x264 on "slow" or "slower" can still hold slightly more fine detail per bit than NVENC H.264. It also has no real-time limit when you are encoding a finished file.

You might also be interested in 7 Most Useful HTML5 Video Integrating Tools.

Recommended OBS Studio Settings

These settings are common starting points. Adjust them for your content, your upload speed and the limits of your streaming platform. In OBS, set Output Mode to Advanced to see all of these options.

NVENC H.264 for Live Streaming (RTX 20-Series and Newer)

Rate control: CBR
Bitrate: about 6,000 kbps for 1080p60 on Twitch. Use a higher value for YouTube, depending on resolution and codec.
Keyframe interval: 2 seconds
Preset: P5 (Slow) or P6 (Slower). Use P7 only if your GPU has headroom.
Tuning: High Quality
Multipass mode: Two Passes (Quarter Resolution)
Profile: High
Look-ahead / Psycho Visual Tuning: turn these on if your GPU has headroom. Turn them off if your game is GPU-bound.
Max B-frames: 2 (up to 4 with look-ahead on)

NVENC HEVC or AV1 for Recording (RTX 40 or RTX 50-Series for AV1)

Rate control: CQP
CQ level: about 16 to 23. Lower numbers give better quality and larger files.
Keyframe interval: 2 seconds
Preset: P6 or P7
Tuning: High Quality
Profile: Main
Look-ahead: on if you have GPU headroom

x264 for Quality-Focused Recording

Rate control: CRF
CRF: 18 to 23. Lower numbers give better quality.
CPU usage preset: medium to slow
Profile: High
Tune: none (or film for live-action footage)

Streaming vs Recording: Which Encoder to Use

Live Streaming

First choice: NVENC on an RTX 20-series or newer card. Gaming performance stays steady, bitrate output is stable, and CPU load stays low.

Alternative: x264 on a strong CPU or a dedicated streaming PC. Use "veryfast" or "faster" and watch OBS's stats for encoding lag. This works best for streams without games, such as podcasts, or on a two-PC setup where the second machine only encodes.

Recording

RTX 40 and RTX 50-series: AV1 or HEVC NVENC gives small files at high quality, which suits 4K captures and YouTube uploads. Use HEVC instead if your editing software or playback devices handle it better.

RTX 20 and RTX 30-series: HEVC NVENC produces smaller files than H.264 at similar quality.

x264 on "slow": This is still an option when maximum detail per bit matters more than encoding time or file size.

For more details, check out our guide on Free AI Video Editors Without Watermark: 10 Best Tools in 2026.

Platform-Specific Considerations

Twitch

Standard Twitch streams use H.264, and about 6,000 kbps remains the usual recommended ceiling for 1080p60. Through Enhanced Broadcasting in OBS 30 or later, Twitch accepts HEVC as well as H.264. In June 2026, HEVC streaming at up to 1440p was reported to have become available to Partners and Affiliates. AV1 and 4K are reportedly not offered on Twitch at this time.

YouTube Live and Uploads

YouTube Live accepts H.264, HEVC and AV1 over Enhanced RTMP. OBS added this in version 29.1. AV1 needs less bitrate than H.264 for the same quality tier. If you stream in HDR, use HEVC, because YouTube's guidance lists HDR support for HEVC but not for AV1.

Kick and Other Platforms

Kick's documentation specifies H.264 only. Many smaller platforms also expect H.264, so NVENC H.264 is the safest choice when multistreaming.

Hardware Recommendations

Streamers Using NVENC

Any RTX card from the 20-series onward gives you the improved encoder for H.264 and HEVC streaming. If you want AV1 for YouTube or recording, you need an RTX 40 or RTX 50-series card. Among current models, the RTX 5070 is a reasonable entry point to the ninth-generation encoder.

Creators Who Record Heavily or Run Several Encodes

The RTX 5070 Ti and RTX 5080 each have two NVENC units, and the RTX 5090 has three. Extra encoders help when you stream and record at once, stream to several platforms, or export high-resolution video. The RTX 50-series also adds 4:2:2 H.264 and HEVC encoding for camera footage.

CPU-Focused Builds for x264

Software encoding while gaming needs a lot of CPU cores. Twelve cores is a sensible minimum if you want x264 to run without slowing the game. The AMD Ryzen 9 9900X (12 cores, 24 threads) and Intel Core Ultra 7 265K or Core Ultra 7 265 (20 cores) are options. In multi-core benchmarks, the 265K is about 10% faster than the 9900X.

Learn more in our article about Tools To Upload Multiple Videos On YouTube: The Ultimate Guide (2026).

Troubleshooting Common Encoding Problems

NVENC

• "Encoding overloaded" while gaming: Lower the preset (for example, P7 to P5), turn off look-ahead, or cap your game's frame rate to leave the GPU some headroom.
• Blocky motion in fast scenes: Raise the bitrate if your platform allows it, or lower the output resolution, for example to 936p or 720p60.
• Uneven stream quality: Use CBR for streaming. VBR and CQP are better suited to recording.

x264

• Dropped frames from encoding lag: Switch to a faster preset or lower the output resolution.
• Game stutters while streaming: The encoder is competing with the game for CPU time. Switch to NVENC or move encoding to a second PC.

What to Watch Next

Twitch codec rollout: HEVC has reportedly been rolled out on Twitch for Partners and Affiliates, but AV1 is reportedly not offered. Check Twitch's announcements before you set up AV1 for Twitch.

Multi-encode setups: Enhanced Broadcasting can send several renditions from your own PC. On those setups, the number of NVENC units on your card matters more than it used to.

Frequently Asked Questions

Is NVENC better than x264?

For live streaming on an RTX 20-series or newer card, usually yes. NVENC H.264 quality is around x264 "medium", and it beats the "veryfast" preset that most CPUs can manage while gaming. NVENC also barely uses the CPU. x264 on slow presets can still keep slightly more detail at low bitrates or in offline encodes.

Is Nvidia NVENC H.264 better than x264 for Twitch?

For most streamers, yes. At Twitch's usual bitrate of around 6,000 kbps, NVENC H.264 on a high-quality preset matches or beats x264 at the presets you can realistically run live. It also leaves your CPU free for the game. If you are a Partner or Affiliate using Enhanced Broadcasting, NVENC HEVC is also an option for 1440p streams.

Which RTX cards support AV1 encoding?

The RTX 40-series and the current RTX 50-series. RTX 20 and RTX 30-series cards encode H.264 and HEVC but not AV1.

Can I stream on Twitch with AV1?

Not generally. As of October 2026, Twitch has reportedly made HEVC available for 1440p streams from Partners and Affiliates, but AV1 is reportedly not offered at this time. YouTube Live does accept AV1.

Can I stream with NVENC and record with x264 at the same time?

Yes. OBS lets you choose separate encoders for streaming and recording. You can also use NVENC for both. Cards with more than one NVENC unit, such as the RTX 5070 Ti, 5080 and 5090, have extra capacity for running encodes in parallel.

Does NVENC work with an AMD or Intel CPU?

Yes. NVENC is part of the Nvidia graphics card, so it works with any CPU. All it needs is an Nvidia GPU with NVENC and up-to-date drivers.