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Compact black rectangular capture box with HDMI ports and USB-C connector

Elgato

Elgato 4K X video capturing device 4K144 HDMI 2.1 VRR HDR10 USB 3.2 Gen 2

SKU CH-SW51-DFDT4

Captures 4K at 144 fps with HDR10 and VRR passthrough via HDMI 2.1, connects over USB 3.2 Gen 2 for ultra-low latency, works with OBS on PC, Mac and iPad.

  • Capture up to 4K at 144 frames per second for ultra-smooth recordings
  • Record 1080p gameplay at 240 frames per second for high-speed action
  • VRR passthrough eliminates screen tearing during play and capture
  • Ultra-low latency over USB 3.2 Gen 2 keeps stream and game in sync
  • Compact 112 x 72 x 18 mm design weighs just 91 grams

Purpose and audience

Elgato 4K X is a USB 3.2 Gen 2 video capturing device built for creators who stream or record gameplay from HDMI sources. It accepts unencrypted HDMI input and provides lag-free HDMI passthrough so the player sees no added delay. The unit works with Windows 10 64-bit, macOS 11, and iPadOS 17 or later. It is not for buyers who need to capture encrypted HDCP streams or who lack a USB 3.2 Gen 2 port for full resolution.

Sustained capture behaviour

The device captures up to 4K at 144 frames per second with HDR10 and can record 1080p at 240 frames per second through its HDMI 2.1 interface. Variable Refresh Rate passthrough eliminates screen tearing during extended sessions. Ultra-low latency keeps broadcast and gameplay synchronised over long periods. A 6th generation Intel Core i5 or AMD Ryzen 5 processor and an NVIDIA GeForce GTX 10xx or better GPU are required to maintain these rates.

Interface limits

HDMI 2.1 bandwidth caps the maximum capture resolution at 4K144 and the high-frame-rate mode at 1080p240. USB 3.2 Gen 1 ports function but force reduced capture resolution. The included USB 3.2 C-to-C cable is 150 cm long and the 8K HDMI cable is 200 cm long. The unit measures 112 x 72 x 18 mm and weighs 91 g.

Highlights

  • Capture up to 4K at 144 frames per second for ultra-smooth recordings
  • Record 1080p gameplay at 240 frames per second for high-speed action
  • VRR passthrough eliminates screen tearing during play and capture
  • Ultra-low latency over USB 3.2 Gen 2 keeps stream and game in sync
  • Compact 112 x 72 x 18 mm design weighs just 91 grams

Specifications

No published specifications for this item yet.

Questions about this item

Does the 4K X stay cool and quiet when it captures 4K144 HDR10 all day?

The 4K X has no fan and no active cooling listed in the specifications. It draws power from the USB 3.2 Gen 2 port and weighs 91 g, so it runs silently with minimal heat during extended sessions.

Which host port and operating system do I need before the 4K X will work?

You need a USB 3.2 Gen 2 Type-C port and Windows 10 64-bit, macOS 11 or iPadOS 17. A 6th-generation Intel Core i5, AMD Ryzen 5 or better CPU plus an NVIDIA GeForce GTX 10-series or better GPU are also required.

Will my older 1080p240 monitor still get a clean signal through the 4K X HDMI 2.1 passthrough?

Yes. The HDMI 2.1 output supports lag-free passthrough up to 1080p240 with VRR, so an older high-refresh monitor receives the same variable-refresh signal without added latency.

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