AMD Radeon RX 6400
Expert rating5.5 / 10
- GPU Brand:
- AMD
- Series:
- Radeon RX 6000
- Tier:
- Entry
- Board Partner:
- Reference
- VRAM:
- 4 GB
- Memory Type:
- GDDR6
- Boost Clock:
- 2321 MHz
- TDP:
- 53 W
- Slot Width:
- 1
- Power Connector:
- Slot Powered
- Recommended PSU:
- 350 W
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Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Manufacturer: AMD Last updated: 2026-09-12
AMD Radeon RX 6400 Review
AMD Radeon RX 6400 is a entry-level AMD graphics card built on the RDNA 2 (Navi 24) architecture, with 4GB of GDDR6 memory, a 2321MHz boost clock, and a 53W TDP. It is a low-profile, single-slot, no-external-power card built for small-form-factor HTPCs and office rigs, not serious gaming.
If you're shopping for a entry-level card, the AMD Radeon RX 6400 lines up against Intel's Arc A380 in this catalog. Expect a card around 145mm long needing a 1-slot opening in your case, with stream processors count of 768 feeding its rendering pipeline. Launch MSRP was $159, though street pricing has moved since.
Performance and Architecture
Built on AMD's RDNA 2 (Navi 24) architecture, the AMD Radeon RX 6400 pairs 768 stream processors with 4GB of GDDR6 memory on what AMD rates as a 2321MHz boost clock. That combination places it in the entry-level tier, where it's tuned for a specific resolution and refresh-rate target rather than being a universal do-everything card.
Power, Size, and Compatibility
At a 53W TDP, the AMD Radeon RX 6400 needs a power supply with enough headroom on the 12V rail plus whatever PCIe power connectors this variant uses. Physically it runs about 145mm long and occupies a 1-slot opening, so measure your case's GPU clearance and front intake fans before buying, especially in compact builds.
Comparison to Alternatives
The closest rival to the AMD Radeon RX 6400 in this catalog is Intel's Arc A380, which competes at a similar price and resolution target. Shoppers who need more VRAM headroom or lower power draw than the AMD Radeon RX 6400 offers should cross-shop that card before deciding, since the two trade blows depending on the game engine and whether ray tracing or upscaling is in use.
Specifications
Platform
| GPU Brand | AMD |
|---|---|
| Board Partner | Reference |
Identity and type
| Product Type | Desktop Add-In Card |
|---|---|
| Series | Radeon RX 6000 |
| Tier | Entry |
Performance
| VRAM | 4 GB |
|---|---|
| Memory Type | GDDR6 |
| Boost Clock | 2321 MHz |
| Ray Tracing Support | Yes |
Physical & Power
| TDP | 53 W |
|---|---|
| Slot Width | 1 |
Silicon
| Architecture | RDNA 2 |
|---|---|
| Shader Units | 768 |
| Compute Blocks | 12 |
Ray tracing and AI
| RT Cores | 12 |
|---|
Clocks
| Game Clock | 2039 MHz |
|---|
Memory
| Memory Bus Width | 64 bit |
|---|---|
| Memory Bandwidth | 128 GB/s |
| Cache Size | 16 MB |
Power
| Recommended PSU | 350 W |
|---|---|
| Power Connector | Slot Powered |
Display and media
| DisplayPort Version | DP 1.4a |
|---|---|
| HDMI Version | HDMI 2.1 |
Market and workstation
| MSRP | 159 USD |
|---|---|
| Launch Date | 2022-01-19 |
| Source URL | https://www.amd.com/en/products/graphics/desktops/radeon/6000-series/amd-radeon-rx-6400.html |
|---|
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating5.5 / 10
A solid entry-level pick if its price and 4GB VRAM allocation match your target resolution.
Best for
- Gamers targeting the resolution this entry-level tier is built for
- Builders who want 4GB of VRAM without moving up a tier
- Anyone upgrading from an older AMD or rival card at a similar price point
Not for
- Buyers who need the absolute best price-to-performance and should compare street prices first
- 4K/high-refresh gamers if this card's tier sits below High-End
- SFF builders who haven't confirmed this card's length and slot width fit their case
FAQs
What are the key specifications of the AMD Radeon RX 6400?
The AMD Radeon RX 6400 is a graphics card from AMD. Key specs: GPU Brand AMD, Tier Entry-Level, Board Partner AMD Reference, VRAM (GB) 4GB GDDR6, Memory Type GDDR6.
Who is the AMD Radeon RX 6400 best suited to?
It suits gamers targeting the resolution this entry-level tier is built for, builders who want 4gb of vram without moving up a tier, anyone upgrading from an older amd or rival card at a similar price point.
What are the drawbacks of the AMD Radeon RX 6400?
It is a poor fit for buyers who need the absolute best price-to-performance and should compare street prices first, 4k/high-refresh gamers if this card's tier sits below high-end, sff builders who haven't confirmed this card's length and slot width fit their case.