Topaz Video AI Denoise (Nyx Model) Review 2026: Settings, Tests & Best Alternative

If you came here to denoise video in Topaz Video AI using the Nyx model, you're in the right place. I’ll show the exact settings I use for Topaz Video Denoise, when to reach for the Nyx model versus the heavier Nyx XL, and how to avoid the common over-smoothing artifact. I'll also share how topaz video ai denoise holds up against a practical Topaz alternative I keep in my toolkit—UniFab Denoise AI—for times when I want similar denoising quality with less setup and a lighter price.

Side‑by‑side example

For more details, see this part: [Performance Comparison: Topaz Nyx Model vs UniFab Denoise AI]

Quick comparison table

Here's a clear comparison table between the Topaz Nyx Model and UniFab Denoise AI based on basic information. For more info, this article UniFab vs Topaz has conducted a detailed comparison of each function.

What Is Topaz Video Denoise?

Topaz Video Denoise (also called "topaz denoise video") is the AI-driven noise-reduction workflow inside Topaz Video AI. It uses dedicated machine-learning models — Nyx for sensor noise / grain, Artemis and Proteus for compression artifacts — to clean footage while preserving real texture and detail.

Unlike traditional spatial or temporal denoise filters that apply a global blur, the Topaz approach analyzes each frame to separate genuine image structure from noise patterns. That's why the Nyx model can lift heavy ISO grain off a night shot without turning skin into plastic.

Core capabilities of the Topaz video denoise workflow:

• AI-powered models (Nyx, Nyx XL, Artemis) for different noise and artifact types
• Combined denoise + 4K/8K upscaling, deinterlacing, and frame-rate conversion in a single pass
• Artifact removal: blockiness, mosquito noise, chroma noise from heavily compressed sources
• Per-clip controls: denoise strength, detail recovery, sharpening, dehalo

Topaz Nyx Model Overview

When people say "the Nyx model" in video editing, they almost always mean this: the Topaz Video AI Nyx noise-reduction engine, designed for noisy, high-resolution footage shot in low-light or high-ISO conditions. The Nyx model separates noise from real textures so night shots, available-light interiors, and underexposed clips can be cleaned without flattening detail.

Nyx runs at its native resolution (denoise only) or pairs with an upscaling model for a complete restoration pass.

Key Features & Use Cases

• Low-light and high-ISO footage — heavy sensor noise in night cityscapes, concerts, weddings, indoor events
• Detail-preserving denoise — targets noise patterns while keeping hair, fabric, and skin texture intact
• Compression and artifact cleanup — reduces blocky compression and chroma noise on highly compressed clips
• GPU-accelerated processing — uses NVIDIA CUDA, AMD, and Apple Silicon acceleration for faster previews and renders
• Manual fine-tuning — denoise / detail / sharpening sliders for precise control (on the standard Nyx model)

Nyx vs Nyx XL: Which Denoise Model to Use

Topaz's current denoise lineup is built around two models — the standard Nyx model and the newer Nyx XL. Older "v2 / v3" numbering has been folded into the app's model updates, so what you actually choose in a 2026 build is Nyx or Nyx XL:

Both can run as a pure denoise pass at the source resolution, or be paired with an upscaling model (for example a noisy 1080p clip cleaned and pushed to 4K in the same render).

Reference: Topaz Labs documentation — model names and behavior change between releases, so always check the in-app description for your build.

When to Use Nyx vs Other Topaz Models

Performance Tests of the Topaz Nyx Model

I ran the Nyx model through controlled tests on real footage. All results below are from the same hardware and clip set — nothing cherry-picked.

Test System

• GPU: NVIDIA GeForce RTX 4070
• CPU: AMD Ryzen 7 5700G with Radeon Graphics

Test Footage

• Duration: 30 s
• Resolution: 1920 × 1080 (Full HD)
• Frame rate: 24 fps
• Output target: 4K

Nyx Denoising Quality Analysis

Nyx delivered excellent noise reduction across diverse scenes. Grain and compression artifacts were effectively removed while natural textures and fine details survived. Unlike some denoisers that over-smooth into a "plastic" look, Nyx maintained realistic image quality — particularly noticeable on skin and fabric.

Performance Metrics

• Processing time: 2 min 37 s
• Processing speed: 4.59 fps

However, the Nyx model's processing speed is relatively slow compared to other denoise models, requiring more time to complete the task—particularly on higher-resolution footage.

How to Use Topaz Denoise Video (Step-by-Step)

The following steps show how to use Topaz Video AI to perform Topaz video denoise on noisy or low-resolution clips. This walkthrough focuses on the Topaz Nyx model so you can remove noise and sharpen video frames with clear, repeatable settings.

Pros and Cons of Topaz Video Denoise Nyx Model

Pros of Topaz Denoise Video

• Effective on heavy noise — Nyx removes high-ISO grain and low-light noise that simpler tools can't touch
• Temporal stability — flicker, grain, and noise reduction stay consistent across frames with minimal motion artifacts when tuned correctly
• Detail preservation — when balanced, Nyx keeps hair, fabric, and skin texture better than most traditional denoisers
• AI-powered fine-tuning — granular control over denoise strength, detail recovery, and sharpening for different luminance/chroma/film grain noise
• Non-destructive workflow — Topaz processes a copy of your source; original stays intact
• Batch and 4K capable — supports batch processing and high-resolution post-production work, GPU permitting

Cons of Topaz Denoise Video

• Expensive — $299/year subscription (Topaz retired the perpetual license in October 2025, so the cost recurs every year)
• Complex UI — preserving detail takes trial-and-error on the standard Nyx model; not fully automatic
• Demands a capable GPU — Topaz recommends an NVIDIA RTX 30-series with ≥ 8 GB VRAM (6 GB VRAM is the minimum)
• Slow — Nyx is noticeably slower than Topaz's lighter enhancement models on the same hardware
• Nyx XL has no adjustable settings — the aggressive XL variant runs fully automatically, so you can't dial back over-smoothing on tricky clips
• Occasional over-smoothing — aggressive settings flatten fine detail, especially on skin and shadow

Topaz Pricing & Trial (2026 Subscription)

In October 2025 Topaz Labs retired the perpetual license. As of 2026 every new buyer is on a recurring subscription.

Free Trial — Topaz offers a free demo (no credit card needed). Catch: every exported clip is watermarked. You can preview model behavior and test hardware speed, but you can't ship production work from the trial.

The one-time perpetual license is no longer available for new users. Continued access to the Nyx model (and any model updates) requires an active subscription.

Best Alternative to Topaz Nyx: UniFab Denoise AI

If you want Topaz video ai denoise quality at faster speed and lower long-term cost, UniFab Denoise AI is the most direct alternative. Two purchase paths:

• UniFab Denoise AI standalone — $139.99 lifetime (or $99.99 for a 1-year plan)
• UniFab All-In-One — $279.99 lifetime, a 14-in-1 toolkit that bundles Denoise AI plus 13 more tools (Upscaler / HDR Upconverter / Face Enhancer / Stabilizer / Smoother / Subtitle Generator / Translator / Vocal Remover and more)

UniFab Denoise AI uses the Silens AI model in Fast and Standard modes, runs on Windows and macOS (Intel + Apple Silicon), supports NVIDIA 50-series GPUs, and falls back to FabCloud cloud processing when your local GPU isn't enough — something Topaz's local models don't offer for denoise.

Key Highlights

• Cleans low-light, high-ISO, and camera-artifact footage with one-click presets
• AI-powered interface for sharp, clean output without parameter babysitting
• NVIDIA 50-series GPU support for faster processing
• Customizable output — resolution, format, codec controls when you want them
• 30-day full-feature trial — no watermark on output (Topaz's trial watermarks every export)

Performance Comparison: Topaz Nyx Model vs UniFab Denoise AI

I ran identical 50-second 720p source clips through Topaz Nyx, Topaz Artemis, and UniFab Denoise AI on the same hardware to a 4K target.

Test Environment 

• GPU: NVIDIA GeForce RTX 4070
• CPU: AMD Ryzen 7 5700G
• Source: 50 s, 30 fps, 1280 × 720
• Target: 3840 × 2160 (4K)

Processing Speed

UniFab Denoise was ~2.7× faster than Nyx and ~8.6× faster than Artemis on the same source.

Denoising Quality Summary

Combined Ranking

• Speed: UniFab Denoise ≫ Topaz Nyx ≫ Topaz Artemis
• Quality: UniFab Denoise > Topaz Nyx > Topaz Artemis

For mainstream low-light denoising work, UniFab is faster AND produces a cleaner, more natural result. Topaz's edge appears in extreme-noise edge cases (dark scenes with very high-ISO smartphone footage) where Nyx XL can recover slightly more detail at the cost of dramatically longer render times.

For a deeper head-to-head, see this UniFab vs Topaz Video AI review on YouTube:

How to Denoise Video with UniFab

Topaz vs UniFab Denoise — 5-Year TCO

After the October 2025 subscription switch, the long-term cost gap matters more than the year-1 sticker price.

For pure denoising, UniFab Denoise AI saves you $159 in year one alone vs Topaz, and the gap grows every year because Topaz keeps charging $299 annually. The All-In-One bundle is the better pick if you also need upscaling, HDR, or any of the other tools in the 14-in-1 toolkit — by year 2 it's still cheaper than a single year of Topaz.

My Verdict — Which Tool Should You Pick?

Use Topaz Video AI Nyx if you do high-end professional restoration work, you've already got an RTX 30-series workstation, you specifically need Nyx XL's edge-case detail recovery, and you're comfortable paying $299/year on an ongoing subscription.

Use UniFab Denoise AI if you process low-light footage regularly, batch through more than a few clips per week, want a no-watermark trial to evaluate before you commit, or work on a Mac (where UniFab's FabCloud closes the GPU gap for heavy denoise jobs).

FAQs about Topaz Denoise Video

What is the Topaz Nyx model?

The Nyx model is Topaz Video AI's dedicated AI denoiser, designed to clean heavy noise and grain in low-light or high-ISO footage while preserving fine detail. It's part of the Topaz Video AI suite — not a standalone product — and runs at its native resolution or paired with upscaling for a full restoration pass. The current denoise lineup is the standard Nyx model plus the newer, more aggressive Nyx XL.

Is Topaz Denoise Video free?

No. Topaz Video AI requires a $299/year subscription as of October 2025 (the one-time perpetual license was retired). A free demo is available without a credit card, but every exported clip carries a watermark. For a free 30-day full-feature trial without watermarks, UniFab Denoise AI is the closest like-for-like alternative.

When should I use Nyx instead of Artemis in Topaz Video AI?

Use the Nyx model when your main problem is sensor noise or film-like grain in otherwise decent-quality footage (night shots, high-ISO, low-light). Use Artemis (or Proteus) when the video suffers more from compression artifacts, blockiness, or low-bitrate streaming damage. Some workflows benefit from running Nyx first for noise, then a sharpening or detail model afterward.

Is Topaz video denoise good for old VHS or MiniDV footage?

Yes, with caveats. Nyx can reduce noise and grain in VHS, MiniDV, or analog captures, especially when combined with upscaling and dehalo controls. However, results depend heavily on tape condition — extremely damaged or warped tapes may still need manual restoration or specialized models before Nyx can help.

What are the system requirements for Topaz Video AI denoise?

Windows 10/11 (64-bit) or macOS 13 or newer with Apple Silicon support. Topaz recommends an NVIDIA RTX 30-series or newer GPU with 8 GB VRAM (6 GB VRAM is the minimum on a supported NVIDIA/AMD/Intel GPU), 16 GB RAM (32 GB recommended), and a CPU with AVX support. Lower-tier GPUs run Nyx but slowly; Apple M-series chips work well for short clips but trail high-end NVIDIA RTX cards on heavy 4K + Nyx XL workloads.

Does Topaz Video AI work on Mac (Apple Silicon)?

Yes. Topaz Video AI is compatible with macOS 13+ and optimized for Apple M-series chips (Intel Macs are no longer supported). That said, Apple Silicon performance still trails high-end NVIDIA RTX cards on long-form 4K denoising. For Mac-only workflows that need to denoise long clips at 4K, UniFab's FabCloud cloud processing offers a faster path.

Is Topaz Video AI Nyx safe to use?

Yes. Topaz Video AI is a legitimate desktop application from Topaz Labs with no malware or hidden data harvesting beyond standard product analytics. Always download from the official Topaz Labs site — third-party "cracked" copies often carry trojans and can't receive model updates anyway, defeating the point of using the Nyx model.

How does UniFab Denoise AI compare to the Topaz Nyx model?

UniFab Denoise AI was ~2.7× faster than Nyx on a 720p → 4K denoise in my test (12 fps vs 4.37 fps on an RTX 4070) and produced a slightly cleaner, more natural-looking image side by side. Topaz Nyx XL still wins on extreme-noise edge cases where maximum detail recovery matters. Pricing: UniFab Denoise AI is $139.99 lifetime vs Topaz's $299/year subscription.

Who should buy Topaz Video AI Nyx in 2026?

Professional video restorers and post-production pros who process noisy archival material weekly, need Nyx XL's edge-case detail recovery, already own RTX 30/40-series workstations, and are comfortable with a $299/year subscription. Hobbyists, YouTubers, wedding shooters, and casual editors will get better total value from UniFab Denoise AI's lifetime license.

How can I denoise video without a Topaz subscription, and what's the best denoiser?

The best all-round pick for most Windows and Mac users is the best video denoiser, UniFab Denoise AI: a free 30-day no-watermark trial, one-click AI denoising that preserves the original detail, and a $139.99 lifetime license instead of a recurring fee. Other subscription-free routes include DaVinci Resolve Studio (one-time license, good Spatial/Temporal Noise Reduction) and open-source tools like Hybrid + NeatVideo, though those carry a steeper learning curve.