4K X Capture Up to 4K144 - Ultra-Low Latency HDMI 2.1 Capture Card

In this review the 4K X Capture is presented as a purpose-built option for gamers and creators who need next-gen capture without compromise. The single biggest reason to buy is its ability to record up to 4K at 144 fps with HDMI 2.1 support and ultra-low latency passthrough, making it a clear choice for PS5, Xbox Series X, Switch and PC users who demand high frame rates and clean HDR10 footage while streaming or recording.

Key Features

• 4K144 capture: Records up to 4K at 144 frames per second to preserve fast motion and deliver crisp footage for high-refresh gameplay captures.
• HDMI 2.1 in/out: Provides modern connectivity and supports high frame rate recording and lag-free HDMI passthrough for a responsive monitor or TV experience.
• VRR passthrough: Variable Refresh Rate passthrough eliminates screen tearing so players keep a smooth on-screen experience while the feed is captured.
• USB 3.2 Gen 2 low latency: Ultra-low latency transfer keeps broadcast and gameplay synchronized for live streaming and real-time commentary.
• Wide app compatibility: Works with common broadcast apps such as OBS and popular platforms so creators can stream to Twitch, YouTube, Discord and others without complex setup.

Who It's For

The 4K X is aimed at serious streamers, tournament players and content creators who prioritize high frame rates and top-tier video quality. It suits owners of PS5, Xbox Series X, PC setups, and newer handhelds who want clean 4K144 or 1080p240 recordings with HDR10 for highlight reels, long-form videos, or professional broadcasts.

Those who need only basic 1080p capture for occasional clips, or who lack a USB 3.2 Gen 2 host port, may find the 4K X overkill; casual streamers on older laptops should consider simpler, lower-resolution capture devices instead.

Pros & Cons

Pros

• Industry-leading frame rate support makes it ideal for high-refresh gameplay capture and smooth motion video.
• HDMI 2.1 connectivity and VRR passthrough combine to prevent tearing and preserve a native console experience.
• Plug-and-play compatibility with major broadcast apps lets creators start streaming quickly with minimal configuration.
• Solid build and reliable performance reported across modern consoles and PCs.

Cons

• High-end feature set requires a capable host system and USB 3.2 Gen 2 port, which some older computers may lack.
• Some users report mixed lag experiences depending on host setup and routing, so results can vary by configuration.

Specifications

Input	HDMI (unencrypted)
Output	HDMI lag-free passthrough
Max recording resolution	Up to 4K at 144 fps; up to 1080p240 recording
HDR	HDR10 support
Connectivity	USB 3.2 Gen 2
Dimensions	112 x 72 x 18 mm (4.4 x 2.8 x 0.7 in)
Weight	91 g (3.2 oz)

Our Verdict

The 4K X Capture is a top choice for creators who need high-frame-rate capture and low latency passthrough; it offers modern HDMI 2.1 features, VRR support and wide app compatibility that justify its position as a professional-grade external capture card and represent good value for serious streamers and competitive gamers.

Frequently Asked Questions

Will this work with PS5 and Xbox Series X?
Yes. The card supports HDMI 2.1 devices including PS5 and Xbox Series X and can capture up to 4K144 or 1080p240 depending on the source and settings.

Do I need a specific USB port?
For the lowest latency and full performance you should use a host with a USB 3.2 Gen 2 port; older USB ports may limit frame rates or add latency.

Does it support HDR?
Yes. HDR10 is supported for capture and passthrough, letting you retain expanded color and contrast when the source provides it.