ASRock

ASRock AMD Radeon RX 6400 Challenger ITX 4GB GDDR6 0dB Silent Cooling 16 Gbps Graphics Card 8K 64bit 7680 x 4320 HDMI DisplayPort PCI Express 4.0

Name: ASRock AMD Radeon RX 6400 Challenger ITX 4GB GDDR6 0dB Silent Cooling 16 Gbps Graphics Card 8K 64bit 7680 x 4320 HDMI DisplayPort PCI Express 4.0
Brand: ASRock
SKU: B09YRXYDTT

Status: ASRock AMD Radeon RX 6400 Challenger ITX 4GB… (RX 6400 4GB graphics card): Unavailable on Amazon as of 2026-10-21 04:13 UTC. Closest in-stock match (same RX 6400 4GB graphics card): MSI Gaming Radeon RX 6400 64-bit 4GB GDDR6…, $420.00 on Amazon as of 2026-10-21 10:13 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $420.00 🛒 Search eBay for this model

Bottom line: The ASRock AMD Radeon RX 6400 Challenger ITX 4GB GDDR6 0dB Silent Cooling: 0dB idle: the single fan stops spinning entirely at low temps; main trade-off: 4GB GDDR6 limits texture settings in modern AAA titles.

Unavailable on Amazon as of 2026-10-21 04:13 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Same RX 6400 4GB graphics card: MSI Gaming Radeon RX 6400 64-bit 4GB GDDR6… — $420.00 on Amazon as of 2026-10-21 10:13 UTC (price may vary).

View Current Price — $420.00

Similar: PowerColor Red Devil AMD Radeon RX 6700 XT… — $849.00 on Amazon as of 2026-10-21 20:32 UTC (price may vary).

View Current Price — $849.00

Similar: ASRock AMD Radeon RX 6500 XT Phantom Gaming D… — $289.99 on Amazon as of 2026-10-21 10:13 UTC (price may vary).

View Current Price — $289.99

Original listing (currently unavailable) → Compare to similar graphics cards

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-21

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ 0dB idle: the single fan stops spinning entirely at low temps
✓ ITX-length board fits small-form-factor and slim office builds
✓ Drives 8K 7680x4320 output over HDMI or DisplayPort

Cons

✗ 4GB GDDR6 limits texture settings in modern AAA titles
✗ 64-bit memory bus is narrow even at 16 Gbps
✗ Single-fan cooler has no redundancy if the fan fails
✗ Only one HDMI and one DisplayPort for multi-monitor setups

Manufacturer description

Single Fan Design Optimized Cooling Efficiency. Single fan that provide strong cooling performance and make your gaming rig stay cool. It’s optimized for delivering excellent gaming experience with stylish and streamlined design. The fan spins when the temperature goes high for the optimal cooling, and stops when the temperature goes low for the complete silence.

SpecPicks Verdict

SpecPicks scored ASRock AMD Radeon RX 6400 Challenger ITX 4GB GDDR6 0dB Silent… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the graphics cards category. ASRock's graphics cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for graphics cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Video review

A NOVA RX 6400 RODA TUDO POR R$1000! SERÁ QUE VALE MESMO? RX 6400 4GB — TecnoArt on YouTube

Key Features

6nm AMD Radeon RX 6400
4GB GDDR6
AMD RDNA 2 Architecture
DirectX 12 Ultimate
PCI Express 4.0 Support

Full Specifications

Brand	ASRock
GPU Series	AMD RX 6000 Series
Model Name	RX6400 CLI 4G
Unit Count	1.0 Count
Model Number	RX6400 CLI 4G
Built-In Media	6nm AMD Radeon™ RX 6400
Number of Fans	1
Mfr Part Number	RX6400 CLI 4G
Video Processor	AMD
Antenna Location	Gaming
Graphics Card Ram	4
Graphics Ram Size	4
Graphics Ram Type	GDDR6
Compatible Devices	Desktop
Graphics Coprocessor	AMD Radeon RX 6400
Graphics Description	AMD Radeon RX 6400 (RDNA 2 Architecture) with 4GB GDDR6, PCIe 4.0 Support, Single Fan Design for Optimized Cooling
Warranty Description	1 year
Item Dimensions L x W	6.38"L x 4.41"W
Video Output Interface	DisplayPort, HDMI
Graphics Card Interface	PCI-Express x4

Performance Data

View gaming FPS, AI inference throughput, and synthetic scores for the Radeon RX 6400 — the core hardware component in this product. Benchmarks sourced from TechPowerUp, PassMark, and the r/LocalLLaMA community.

Which local LLMs fit in 4 GB?

4 GB is below the floor for an 8B model at Q4 — expect part of the model to execute on the CPU.

❌ 7–9B models (Llama 3.1 8B, Qwen 3 8B) — needs 8 GB+
❌ 12–14B models (Qwen 3 14B, Phi-4) — needs 12 GB+
❌ 20–27B models (Gemma 3 27B, Mistral Small) — needs 20 GB+
❌ 30–35B models (Qwen 3 32B, QwQ 32B) — needs 24 GB+
❌ 70B models (Llama 3.3 70B, Qwen 2.5 72B) — needs 48 GB+

Per-model VRAM guide: which GPU for which LLM →

Ready to buy?

Amazon shows no buyable offer for ASRock AMD Radeon RX 6400 Challenger ITX 4GB… at the last check. The closest in-stock match with the same RX 6400 4GB graphics card is MSI Gaming Radeon RX 6400 64-bit 4GB GDDR6…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $420.00