Radeon RX 6400
The Radeon RX 6400 is AMD’s 4GB graphics card with a 53W board power rating, built on the RDNA 2 Navi 24 architecture. Below you’ll find its full spec sheet and gaming and productivity benchmarks, plus all 2 board versions we track, each with its cheapest current price.
Prices update regularly and may differ at the retailer. This page contains affiliate links.
Gaming performance
Gaming score: geometric mean of in-game FPS, normalized so the RTX 5090 = 100. Render and synthetic scores are in the Benchmarks section below.
Gaming scores are normalised performance indexes derived from Tom’s Hardware’s published GPU benchmarks. Performance per dollar and per watt are our own calculations on top of that data.
1080p Gaming
1440p Gaming
4K Gaming
The Radeon RX 6400 scores 11.9 at 1080p, 0.0 at 1440p, and 0.0 at 4K on a scale where 100 = the fastest GPU we test (RTX 5090). These scores apply to all board versions of this chip.
Performance-per-dollar rank among all GPUs with live pricing
Value at 1080p
#46
of 51
Value at 1440p
—
Value at 4K
—
Benchmarks
Standardized benchmark scores for this chip, each compared to the fastest card we track and linked to its source. They apply to every board version.
3D & gaming
Compute & AI
Radeon RX 6400 versions (2)
Every board version we track, cheapest first.
- $303.47
- Sapphire PULSE RX 6400$465.00170 mm
| Version | Boost Clock | Length | Color | From | Buy | |
|---|---|---|---|---|---|---|
| XFX Speedster SWFT105 RX 6400 | — | 155 mm | — | $303.47 | | |
| Sapphire PULSE RX 6400 | — | 170 mm | — | $465.00 | |
2 board versions of the Radeon RX 6400 are listed above, starting from $303.47. Prices update daily from live retailer stock. Click any version name for its full spec sheet and all current retailer prices.
Specifications
Board versions of the Radeon RX 6400 range from 155–170 mm long, so check your case's GPU clearance before buying.
Performance
- Boost clock
- 2321 MHz
- Base clock
- 1923 MHz
- Shader cores
- 768
- Compute units
- 12
- Texture units (TMUs)
- 48
- Render outputs (ROPs)
- 32
- RT cores
- 12 · 1st gen
Memory
- VRAM
- 4GB GDDR6
- Memory bus
- 64-bit
- Bandwidth
- 128 GB/s
- Memory speed
- 16 Gbps
- Infinity Cache
- 16 MB
GPU die
- Architecture
- RDNA 2 Navi 24
- Process node
- TSMC N6
- Foundry
- TSMC
- Die size
- 107 mm²
- Transistors
- 5.4 billion
- Generation
- Radeon RX 6000
Power
- TDP
- 53W
- Recommended PSU
- 350W
Display & outputs
- Max resolution
- 7680 × 4320
- Max displays
- 4
- HDCP
- 2.3
- Outputs
- 1 HDMI 2.1, 1 Displayport 1.4a
- PCIe interface
- PCIe 3.0 ×16
APIs & software
- DirectX
- 12 Ultimate (12.2)
- Vulkan
- 1.3
- OpenGL
- 4.6
- OpenCL
- 2.2
- Shader model
- 6.7
Video encoding & decoding
| Codec | Encode | Decode |
|---|---|---|
| H.264 / AVC | Not supported | Not supported |
| H.265 / HEVC | Not supported | Supported |
| AV1 | Not supported | Not supported |
| VP9 | Not supported | Not supported |
Decoder: VCN (HEVC decode only)
Features
- Upscaling
- FSR 3, FSR 3 Frame Generation
- Also runs
- XeSS 2, XeSS 2 Frame Generation
- Resizable BAR
- Yes
Physical
- Reference length
- 172 mm
- Slot width
- 1 slots
- Released
- 2022-04-20
- MSRP
- $159.00
768 shader cores feed a 64-bit memory interface delivering 128 GB/s of peak bandwidth. 12 RT cores enable hardware-accelerated ray tracing. Compare the Radeon RX 6400 against the full GPU lineup on the full graphics card rankings.
Local AI performance
What the Radeon RX 6400 can run on your own machine, and how fast.
Largest model it can run (8K context)
- Q4 (the usual choice, near-original quality)
- ~3.1B
- Q8 (closer to original, half the model size)
- ~1.8B
- FP16 (unquantised, for training and research)
- ~0.9B
Parameter counts the card holds with room for an 8K conversation, counting the model weights plus its attention cache. A longer conversation needs more memory, so it lowers these figures.
Speed & value
- Speed, 8B model at Q4
- 21-24 tok/s
- Memory bandwidth
- 128 GB/s
- Price per GB of VRAM
- $75.87
Generation speed tracks memory bandwidth, because every word produced reads the whole model from memory. Shown as a range.
Models that fit, at Q4
| Model | Size | Memory needed | Est. speed |
|---|---|---|---|
| Falcon3 3B | 3.2B | 2.7GB | 47-55 tok/s |
| Llama3.2 3B | 3.2B | 3.0GB | 47-55 tok/s |
| Qwen2.5 3B | 3.1B | 2.2GB | 49-57 tok/s |
Popular models small enough for this card at Q4, one per family. Speed is left blank for mixture-of-experts models, where a bandwidth estimate is not reliable enough to publish.
Affiliate disclosure: Some links on this page are affiliate links — MaxMyBuild may earn a commission at no extra cost to you if you buy through them. As an Amazon Associate, MaxMyBuild earns from qualifying purchases. For Amazon, current price and availability are shown on the Amazon product page; product prices and availability are accurate as of the date and time of purchase and are subject to change. Prices shown for other retailers are approximate and may differ at checkout. “Search” links are non-affiliate and provided for convenience only.