PowerColor

PowerColor AMD Radeon RX 6400 ITX Graphics Card with 4GB GDDR6 Memory

Name: PowerColor AMD Radeon RX 6400 ITX Graphics Card with 4GB GDDR6 Memory
Brand: PowerColor
SKU: B09WXVVP89

Status: PowerColor AMD Radeon RX 6400 ITX Graphics Card… (RX 6400 4GB graphics card): Unavailable on Amazon as of 2026-10-21 10:13 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 PowerColor AMD Radeon RX 6400 ITX Graphics Card with 4GB GDDR6 Memory: 4GB GDDR5 memory handles esports and 1080p titles at low settings; main trade-off: only 320 stream processors struggle with modern AAA games.

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

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Currently unavailable on Amazon. Not the same product — an in-stock alternative with matching specs:

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

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

✓ 4GB GDDR5 memory handles esports and 1080p titles at low settings
✓ 320 stream processors with 780 MHz boost clock
✓ Compact entry GPU for basic desktop and HTPC builds
✓ 1150 MHz memory clock delivers 4.6 Gbps effective bandwidth

Cons

✗ Only 320 stream processors struggle with modern AAA games
✗ 780 MHz boost clock limits demanding titles
✗ 4GB GDDR5, not faster GDDR6, shows dated bandwidth
✗ Runs on a PCIe 3.0 x8 link rather than full x16

Manufacturer description

PowerColor AMD Radeon RX 6400 ITX Graphics Card with 4GB GDDR6 Memory

SpecPicks Verdict

SpecPicks scored PowerColor AMD Radeon RX 6400 ITX Graphics Card with 4GB GDDR6 Memory using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the graphics cards category. PowerColor'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

Tiny RDNA2, The Best LP Single Slot GPU: AMD Radeon RX 6400 Review — Hardware Unboxed on YouTube

Key Features

Video Memory: 4GB GDDR6
Stream Processor: 768
Game Clock: 2039 MHz
Boost Clock: 2321 MHz
Memory Clock: 16.0 Gbps

Full Specifications

Brand	PowerColor
GPU Series	AMD RX 6000 Series
Game Clock	2039 MHz
Model Name	RX 6400 ITX Graphics Card
Boost Clock	2321 MHz
Memory Clock	16.0 Gbps
Model Number	AXRX 6400 4GBD6-DH
Video Memory	4GB GDDR6
Built-In Media	Graphics card, Quick Installation Manual
Number of Fans	1
Mfr Part Number	AXRX 6400 4GBD6-DH
Number of Items	1
Video Processor	AMD
Antenna Location	Gaming
Stream Processor	768
Graphics Card Ram	4 GB
Graphics Ram Size	4 GB
Graphics Ram Type	GDDR6
Compatible Devices	Desktop
Memory Clock Speed	16000 MHz

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 PowerColor AMD Radeon RX 6400 ITX Graphics Card… 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