A dual PC streaming setup separates gaming and streaming onto two machines — your gaming PC handles the game at full performance while a dedicated streaming PC handles encoding, overlays, and broadcasting. The result is zero streaming overhead on your gaming rig and higher-quality streams from the dedicated encoder.

Do You Actually Need a Dual PC Setup?

Dual PC setups make sense when:

Your gaming PC struggles to maintain FPS while streaming (streaming taxes the CPU or GPU)
You want NVENC/ARC encoding on one machine while gaming on another
You’re streaming at high bitrates (8000+ kbps) that stress a single system
You want true 1080p60 or 1440p60 capture with no compromises

For most modern gaming PCs (RTX 4070+ or RX 7800 XT+), hardware encoding (NVENC/ARC) is good enough for a single-PC setup. Consider dual-PC only if you’ve maxed out your current hardware.

Hardware Required

Gaming PC (Source)

Any modern gaming PC. The key output to the capture card:

HDMI 2.1 for 4K60 or 1440p144
DisplayPort to HDMI adapter if needed

Streaming PC (Capture)

The streaming PC doesn’t need to be powerful — encoding is handled by its GPU or CPU:

Minimum: Intel i5-12400 + 16GB RAM (for CPU encoding)
Recommended: Any PC with NVIDIA GPU (for NVENC) or Intel Arc (for AVC/HEVC QSV)
Old gaming PCs, mini-PCs (Beelink EQ12), or a used workstation work well

Capture Card

The capture card connects the gaming PC’s video output to the streaming PC’s input.

Card	Max Capture	Best For
Elgato HD60 X	4K30 / 1080p60	Entry-level USB
AVerMedia Live Gamer 4K (GC553)	4K60 HDR	High-end USB
AVerMedia Live Gamer Duo	1080p60	Two sources
Elgato 4K X (PCIe)	4K60 HDR	Best quality, internal PCIe
AVerMedia Live Gamer Ultra 2.1	4K144 HDR	Top of market

For 1080p60 streaming (standard), the Elgato HD60 X (~$150) is a solid entry-level choice. For 1440p60 or 4K capture, step up to the AVerMedia GC553 or Elgato 4K X.

Physical Connection

Gaming PC:
  GPU → HDMI/DP cable → [Splitter or direct]
                              ↓
                       Gaming Monitor   Capture Card (HDMI IN)
                                              ↓
                                    Streaming PC (USB 3.0 or PCIe)
                                              ↓
                                         OBS Studio
                                              ↓
                                      Twitch / YouTube

Most capture cards are pass-through — the gaming PC’s signal goes to both the gaming monitor (at full quality) and the capture card simultaneously. The capture card records/streams a copy.

Connect:

Run HDMI from gaming PC GPU → capture card HDMI IN
Run HDMI from capture card HDMI OUT → gaming monitor
Connect capture card to streaming PC via USB 3.0 (or PCIe if internal)

OBS Configuration on the Streaming PC

Install OBS Studio (obsproject.com) on the streaming PC
Sources → + → Video Capture Device
Select your capture card from the Device dropdown
Set resolution to 1920×1080 (or your capture resolution) and FPS to 60

Encoding Settings for Streaming PC

Go to Settings → Output → Streaming:

Encoder: NVENC H.264 (if NVIDIA GPU) / Quick Sync H.264 (if Intel) / Software x264 (if CPU)
Bitrate: 6000 kbps for Twitch (partner), 8500 kbps for YouTube
Keyframe Interval: 2 seconds
Preset: Quality or Balanced (NVENC); Medium (x264)

Audio Setup

Audio is the trickiest part of dual-PC streaming.

Option 1: HDMI audio capture

If the gaming PC’s audio goes through HDMI to the capture card, the streaming PC captures audio along with video. Simple but adds latency.

Option 2: 3.5mm audio cable

Run a 3.5mm cable from the gaming PC’s headphone output to the streaming PC’s line-in. Add an audio input source in OBS.

Option 3: Virtual Audio Cable + NDI

More complex but highest quality — use software like VoiceMeeter on the gaming PC to route audio over the network via NDI.

NDI: Alternative to Capture Cards

NDI (Network Device Interface) streams video over your local network instead of requiring a capture card:

Install NDI Tools (ndi.video) on both PCs
Gaming PC: run OBS with the NDI plugin — output the game feed via NDI
Streaming PC: add an NDI source in OBS, select the gaming PC feed

NDI requires a gigabit Ethernet connection between both PCs. Wi-Fi is not reliable enough. The benefit: no capture card purchase. Drawback: more CPU usage and potential latency.

Synchronizing Audio/Video

Capture introduces latency — video arrives slightly delayed compared to audio. Fix in OBS:

Right-click the video capture source → Filters
Add Sync Offset filter
Adjust offset until video and audio align (usually -100ms to +200ms)

Use a handclap or audio event to sync: clap while watching the OBS preview, then adjust offset until you see and hear the clap simultaneously.

Cost Summary

Component	Estimated Cost
Elgato HD60 X capture card	$150
Streaming PC (used mini-PC)	$200–400
HDMI cables (2x)	$20
Total	~$370–570

Many streamers repurpose an old gaming PC as the streaming machine — if you have a 5-year-old PC collecting dust, a $150 capture card is all you need.