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The Ultimate Guide to Dual-PC Streaming: Why Twitch Streamers Use Two PCs

Discover why Twitch streamers use a dual-PC setup for smoother gameplay and high-quality streaming. Learn about alternatives, best hardware choices, and how to set up your own dual-PC streaming system!

A desktop PC setup with a ViewSonic monitor displaying the Twitch logo, positioned beside two tower PCs—one with RGB cooling fans and an open side panel—set against a purple background.

Introduction

Streaming on Twitch has become more competitive than ever, and many professional streamers are constantly looking for ways to enhance their performance and stream quality. One of the most effective ways to do this is by using a dual-PC streaming setup—one PC dedicated to gaming and the other handling the stream.

But why go through the trouble of setting up two PCs instead of just using one? In this guide, we'll break down everything you need to know about dual-PC streaming, including its benefits, potential downsides, and how to set up your own. Plus, we’ll recommend an affordable second monitor that’s perfect for managing your stream. Let’s dive in!

What is a Dual-PC Streaming Setup?

A dual-PC streaming setup is a system configuration where two separate computers work together to handle different aspects of a live stream. This setup is designed to distribute the workload between two machines, ensuring smooth gameplay while maintaining high-quality streaming output.

The two primary components of this setup include:

  • Gaming PC – This is the primary machine responsible for running the game at its highest possible settings. It focuses entirely on performance, ensuring that gameplay remains smooth, frame rates stay high, and graphics quality is maximized. The gaming PC does not have to worry about additional resource-heavy tasks such as encoding video for a live stream, as those are offloaded to the second PC.

  • Streaming PC – This secondary PC is dedicated to handling everything related to broadcasting. It encodes and transmits video and audio data to streaming platforms like Twitch, YouTube, or Facebook Gaming. Since this PC is not running the game itself, it can focus on efficient encoding, reducing dropped frames, and maintaining consistent bitrates for the best possible streaming experience.

Why Do Streamers Use Two PCs?

A female gamer wearing a beanie and headset is live streaming from her gaming setup. She is playing a game on a dual-monitor setup, with one screen displaying gameplay and the other showing a chat window. A professional microphone, audio mixer, and camera setup are visible, along with soft studio lighting, creating an immersive streaming environment.

1. Performance Optimization

When using a single PC for both gaming and streaming, running OBS (Open Broadcaster Software) alongside a game can slow down performance. With a second PC handling streaming, your gaming rig can run at full speed without worrying about extra processing demands.

By offloading video encoding to a separate PC, the gaming system’s CPU and GPU remain dedicated to the game, resulting in smoother gameplay and improved responsiveness, especially in competitive gaming scenarios where high frame rates matter.

2. Better Stream Quality

A dedicated streaming PC can encode high-quality video without affecting game performance. This means you can stream at higher resolutions and bitrates, giving your viewers a smoother and clearer experience. This is particularly useful for streamers who aim to provide 1080p 60fps or even 4K streaming.

The second PC also helps in reducing encoding lag, ensuring that streams do not stutter or drop frames due to CPU overload.

3. System Stability

If a game crashes on your gaming PC, your stream will still be live on the streaming PC, allowing you to interact with your audience and troubleshoot without immediately losing your viewers. This is particularly useful for streamers who rely on Twitch or YouTube for income, as keeping a consistent stream is essential.

Additionally, by having a separate streaming PC, you reduce the risk of unexpected in-game performance drops due to background tasks running while streaming.

4. Multitasking Benefits

With two PCs, you can keep streaming software, alerts, and chat windows separate from your gameplay, making it easier to engage with viewers without tabbing out of your game. This also allows streamers to run additional applications, such as Discord for team communication or music software, without impacting gaming performance.

5. Flexibility in Setup and Customization

Having a second PC allows you to experiment with more complex streaming setups, such as:

  • Running multiple camera angles.

  • Using a green screen with real-time background removal.

  • Implementing higher-end visual overlays and animations.

  • Running bot software or AI-driven tools without affecting gameplay performance.

Potential Downsides of a Dual-PC Setup

A young female gamer wearing a headset sits at a gaming desk with RGB lighting, resting her head on her hand in frustration. A dual-monitor setup and gaming PC with LED lights are visible in the background.

1. Higher Cost

Buying and maintaining two PCs, extra peripherals, and capture cards can be expensive. However, if you’re serious about streaming, it’s an investment worth considering.

2. Complex Setup

A dual-PC setup requires additional equipment like capture cards and audio routing solutions, which can be tricky to configure. Setting up audio correctly can be particularly challenging, as sound must be properly routed between both PCs to ensure both stream audio and game audio are balanced correctly.

3. More Space & Power Consumption

Running two PCs means more desk space is needed, and it will increase electricity usage. Additionally, managing the heat output from two computers in a confined space can become an issue, requiring better ventilation or cooling solutions.

4. Additional Cables and Accessories

Since two PCs are being used simultaneously, you may need extra cables, USB hubs, or even a KVM switch to efficiently switch between the two setups.

Essential Components for a Dual-PC Setup

Gaming PC – Recommended: 

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  • Windows 11 Home
  • Intel Core i5 12400F CPU
  • 32GB DDR4 Memory
  • 1TB Gen4 NVMe SSD
  • GeForce RTX 4060 Ti 8GB
  • 867Mbps Wi-Fi

£899.99 inc VAT

CCL Code: AMZ-GAM-CORE-A4|
Part Number: AMZ-GAM-CORE-A4
|Manufacturer: HORIZON

For a high-performance gaming PC that ensures smooth, high-FPS gameplay, we recommend the Horizon Core i5 RTX 4060 Ti Next Day Gaming PC. Here’s why this system is a fantastic choice for gaming:

  • Intel Core i5 12400F CPU – A powerful 6-core processor that provides excellent gaming performance without bottlenecking your GPU.

  • 32GB DDR4 Memory – More than enough RAM to handle modern games, background apps, and multitasking without performance drops.

  • 1TB Gen4 NVMe SSD – Ultra-fast storage ensures rapid game loading times and smooth system performance.

  • GeForce RTX 4060 Ti 8GB GPU – A next-gen graphics card that supports ray tracing, DLSS, and high frame rates in modern AAA games.

  • 867Mbps Wi-Fi – Stable wireless connectivity, ensuring low latency in online games.

  • Windows 11 Home – Optimized for gaming, ensuring full support for DirectX 12 and gaming optimizations.

This well-balanced system delivers the power needed to run demanding games at high settings while maintaining smooth frame rates. It pairs exceptionally well with a dual-PC setup, as it offloads streaming duties to another machine, allowing full CPU and GPU resources to be dedicated to gameplay.

Streaming PC – Recommended:

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CCL Alpha Ryzen 5 Configurable Home/Office PC
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CCL Alpha Ryzen 5 Configurable Home/Office PC

Experience unmatched performance with our configurable tower PC featuring the latest AMD AM5 platform.
  • Windows 11 Home
  • AMD Ryzen 5 8600G CPU
  • 16GB DDR5 Memory
  • 1TB Gen4 NVMe SSD
  • Radeon 760M CPU Graphics
  • 1201Mbps Wi-Fi

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CCL Code: CCL-8600G-TWR|
Part Number: CCL-8600G-TWR
|Manufacturer: CCL Computers

A great streaming PC needs to be efficient at encoding video, managing streaming software, and handling overlays without stuttering. The CCL Alpha Ryzen 5 Configurable Home/Office PC is an ideal choice for this role:

  • AMD Ryzen 5 8600G CPU – A 6-core, 12-thread processor that offers great multi-threaded performance for encoding and streaming.

  • 16GB DDR5 Memory – Faster than DDR4, ensuring smooth operation of OBS, chat overlays, and streaming tools.

  • 1TB Gen4 NVMe SSD – Rapid storage speeds prevent delays in video file processing and keep the system responsive.

  • Radeon 760M CPU Graphics – While a discrete GPU isn’t needed for a streaming PC, this integrated graphics option ensures fluid operation for encoding tasks.

  • 1201Mbps Wi-Fi – High-speed Wi-Fi connectivity for stable streaming performance.

  • Windows 11 Home – Fully optimized for multitasking and streaming applications.

This system is perfectly tailored for a dedicated streaming PC. It ensures high-quality video encoding, low power consumption, and seamless integration with a dual-PC setup. With OBS and streaming tools running on this system, your gaming PC remains focused on performance, resulting in smoother gameplay and higher-quality streams.

Capture Card – Recommended: 

CCL Code: AVD0799|
Part Number: RZ20-02850100-R3M1
|Manufacturer: Razer

A capture card is an essential component for transferring video and audio from your gaming PC to your streaming PC. We highly recommend the Razer Ripsaw HD Capture Card, as it delivers premium performance and ease of use:

  • Full HD 1080p at 60 FPS – Provides high-quality, smooth video for a professional-looking stream.

  • 4K 60 FPS Passthrough – Allows you to game in full 4K resolution with zero impact on gameplay performance while streaming in 1080p.

  • Full Audio Mixing Capabilities – Enables hassle-free audio management, ensuring game audio and voice commentary are perfectly balanced.

  • HDMI 2.0 & USB 3.0 Connectivity – Zero-latency output and ultra-fast data transfer for maximum performance.

  • 3.5mm Audio Cable Support – Allows for software-free setup and easy audio management.

With crystal-clear video quality, fast response times, and seamless integration, the Razer Ripsaw HD Capture Card is one of the best options for streamers who want the best dual-PC setup experience.

How to Set Up a Dual-PC Streaming System

A diagram illustrating the setup of a dual-PC streaming system. The image shows connections between a gaming PC and a streaming PC using a capture card, audio splitter, microphone, and headphones. It details how game audio, microphone input, and USB connections are routed to ensure smooth streaming and audio management.

A. Hardware Setup

  1. Connect the gaming PC to the capture card.

    • Your gaming PC needs to send its video output to the streaming PC. To do this, you will connect an HDMI cable from your gaming PC’s GPU output to the HDMI input on the capture card (such as the Razer Ripsaw HD). This allows the streaming PC to receive the game feed.

    • If your monitor has only one HDMI port, you may need an HDMI splitter to duplicate the signal to both your monitor and capture card.

  2. Plug the capture card into the streaming PC via USB or PCIe.

    • If you’re using an external capture card (like the Razer Ripsaw HD), plug it into a USB 3.0 port on your streaming PC.

    • If you’re using an internal capture card, you’ll need to install it into a PCIe slot inside the streaming PC. This requires opening the PC case and securely inserting the capture card into an available PCIe slot on the motherboard.

  3. Connect both PCs to a router for network stability.

    • It’s important that both the gaming and streaming PC are connected to the internet for seamless performance.

    • The best option is using an Ethernet cable to connect both PCs to your router. This provides lower latency and higher bandwidth, ensuring a smooth, lag-free stream.

    • If you must use Wi-Fi, ensure both PCs have strong, stable connections and use high-speed Wi-Fi adapters to minimize interruptions.

B. Software Setup

  1. Install OBS Studio (or Streamlabs) on the streaming PC.

    • OBS Studio (Open Broadcaster Software) and Streamlabs OBS are the two most popular programs for managing your live stream.

    • Download and install OBS Studio on your streaming PC, as this is where the video feed from your gaming PC will be processed and broadcasted.

  2. Configure the capture card as the main video input.

    • Open OBS on the streaming PC and add a new source.

    • Select “Video Capture Device” and choose your capture card (e.g., Razer Ripsaw HD).

    • Adjust the resolution to match your gaming output (e.g., 1080p 60fps for a high-quality stream).

    • Ensure the audio from the capture card is enabled so that game sound is also captured.

  3. Adjust bitrate, encoding settings, and overlays.

    • Bitrate: The ideal bitrate depends on your internet speed and streaming quality. For 1080p 60fps, a bitrate of 6000 Kbps is recommended. If your upload speed is limited, lower the bitrate accordingly.

    • Encoding settings: Choose x264 (CPU encoding) or NVENC (GPU encoding) for better performance. The streaming PC should handle encoding, ensuring minimal load on your gaming PC.

    • Overlays: Customize your stream with alerts, webcam feeds, and overlays to enhance audience engagement. OBS allows you to add these elements easily.

C. Audio Configuration

  1. Route game audio from gaming PC to streaming PC.

    • You need to ensure that game sound from your gaming PC is captured properly on the streaming PC.

    • The simplest method is enabling audio capture through the capture card, which sends sound along with the video signal.

    • For more control, you can use an audio splitter or Voicemeeter software to manually route the audio between both systems.

  2. Use Voicemeeter or GoXLR for advanced audio mixing.

    • Voicemeeter Banana (free software) allows you to separate and control different audio sources (game audio, voice chat, music) independently.

    • GoXLR (hardware mixer) is a professional solution that lets you control mic input, system audio, and music independently while adding effects like noise suppression.

    • These tools prevent issues like echo, delayed sound, or unbalanced volumes, ensuring your audience hears clear, high-quality audio.

Choosing the Right Second Monitor for Your Dual-PC Setup

Do You Really Need an Expensive Second Monitor?

Absolutely not! Unlike your primary gaming monitor, which requires high refresh rates, low response times, and premium resolution for the best gameplay experience, your second monitor for streaming serves a different purpose. It is primarily used for checking chat, managing stream alerts, monitoring OBS settings, and handling stream interactions. Because of this, you don’t need to invest in a high-end, ultra-fast display—what you really need is a clear, reliable, and budget-friendly monitor that does the job efficiently.

Recommended Monitor

  • 1920 x 1080 Full HD Resolution
  • Lightning 1ms Response Time
  • 250cd/m2 Brightness
  • 100Hz Refresh Rate
  • FreeSync Support
  • Inputs: VGA and HDMI

£54.99 inc VAT

CCL Code: MON7725|
Part Number: VA2406-H
|Manufacturer: ViewSonic

For streamers looking for a practical and affordable second monitor, the ViewSonic VA2406-H 24" Full HD Monitor is an excellent choice. Here's why:

  • 24-inch Full HD (1080p) Display – The 1920x1080 resolution ensures crisp visuals, making it easy to read chat, track alerts, and monitor your stream software without straining your eyes.

  • 100Hz Refresh Rate & 1ms Response Time – While a second monitor doesn’t need a high refresh rate, the 100Hz refresh rate ensures smoothness when scrolling through chat, browser windows, and stream analytics. The 1ms** **response time minimizes lag, ensuring there’s no delay when switching between tabs or adjusting settings.

  • VA Panel for Great Contrast and Wide Viewing Angles – VA panels are known for deep blacks, rich colors, and excellent viewing angles. This means clear visibility even if the monitor is mounted to the side or positioned at an angle.

  • Affordable at Only £59.99 – At this price, the ViewSonic VA2406-H is an unbeatable deal, offering essential features that meet a streamer's needs without breaking the bank.

Why It’s Perfect for Streamers

  • Dedicated Stream Management Screen – Having a separate screen for your streaming software allows you to keep an eye on everything without disrupting your gameplay.

  • Perfect for Multitasking – You can monitor your chat, stream health, notifications, and music playlist all in one place without cluttering your gaming screen.

  • Comfortable for Long Streaming Sessions – The flicker-free technology and blue light filter help reduce eye strain, making it comfortable to use for extended periods of time.

If you’re setting up a dual-PC streaming system, having a dedicated second monitor is a game-changer. The ViewSonic VA2406-H is the perfect balance between affordability, functionality, and comfort, making it a top pick for budget-conscious streamers looking for a reliable and efficient display.

Extra Considerations for a Dual-PC Setup

A. Monitor Positioning & Ergonomics

  • Use a monitor stand or arm for better placement.

  • Vertical orientation can improve visibility.

B. Connectivity & Cables

  • Ensure HDMI/DisplayPort compatibility between PCs and monitors.

  • Use a KVM switch for managing both PCs with one mouse & keyboard.

C. Reducing Eye Strain

  • Enable blue light filter modes for long streaming sessions.

  • The ViewSonic VA2406-H includes flicker-free technology, making it easier on the eyes.

Alternative Solutions for Streaming

A dual-PC streaming setup is ideal, but there are other ways to achieve high-quality streaming depending on your setup and budget.

1. Single-PC Streaming

If you have a high-performance gaming PC, you might not need a second system. Many modern CPUs and GPUs handle both gaming and streaming simultaneously. To make it work:

  • Use a strong CPU like an Intel i9 or AMD Ryzen 9 for multitasking.

  • Leverage a modern GPU with built-in encoding, such as the RTX 40-series or AMD Radeon 7000-series.

  • Ensure proper cooling to prevent overheating during long streams.

2. Hardware Encoding (NVENC/AMD VCE)

Instead of relying on CPU-based software encoding (x264), modern GPUs offer built-in encoders for better performance:

  • NVIDIA NVENC (RTX/GTX cards) offloads encoding tasks, reducing CPU load while maintaining stream quality.

  • AMD VCE (Radeon GPUs) provides similar hardware-accelerated encoding for smooth, high-resolution streaming.

Using NVENC or VCE allows your game to run without performance drops while streaming.

3. Cloud-Based Streaming Services

Cloud services reduce the hardware strain by handling encoding remotely:

  • NVIDIA GeForce Now – Streams games from NVIDIA’s servers, reducing load on your PC.

  • Shadow PC – Lets you stream games using a powerful, cloud-based PC.

While these options enable streaming on lower-end hardware, they require fast and stable internet to avoid lag.

Conclusion

A dual-PC setup can massively improve stream quality and reliability, but it’s not for everyone. If you’re serious about streaming, investing in a second PC and a practical second monitor can make a huge difference.