ASRock Radeon RX 6400 Challenger 4GB GDDR6
Built on the 6nm RDNA 2 architecture, this card stands out with a compact single-fan design that enables 0dB silent cooling by stopping the fan under low load. Its low-profile, slot-powered form factor makes it a simple drop-in upgrade for small form factor or office PCs lacking auxiliary power connectors. This card is best for users needing basic display output, light esports gaming, or adding HDMI/DisplayPort to a budget home theater PC.
No current retailer price
Snapshot
Pros & Cons
Pros
- Strong efficiency (96th percentile) 96th
- Strong social proof (76th percentile) 76th
- Strong affordability (70th percentile) 70th
Cons
- Below average compute (14th percentile)
- Below average ai (16th percentile)
- Below average vram (18th percentile)
- Below average raster (20th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 6 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Chipset
| GPU Chipset | Radeon RX 6400 |
| Brand | AMD |
| Architecture | RDNA 2 |
| Class | consumer |
| Process | 6 |
Memory
| VRAM | 4 GB |
| Memory Type | GDDR6 |
| Memory Bus | 64 |
| Bandwidth | 128 |
Compute
| Stream Processors | 768 |
| RT Cores | 12 |
| Base Clock | 1923 |
| Boost Clock | 2321 |
| FP16 TFLOPS | 7.13 |
| FP32 TFLOPS | 3.565 |
Performance
| PassMark G3D | 7746 |
| GPU Compute | 2798 |
Power & Cooling
| TDP | 53 |
| Recommended PSU | 350 |
| Power Connectors | None |
| Cooler | Single Fan |
| Fans | 1 |
Connectivity
| Interface | PCI Express 4.0 |
| DisplayPort | 1 |
| HDMI | 1 |
| Max Displays | 2 |
| Max Resolution | 7680 x 4320 |
Physical
| Length | 162 |
| Slot Width | 2 |
| Form Factor | ITX |
| Weight | 0.3 kg / 0.6 lbs |
Features
| Ray Tracing | Yes |
| Upscaling | AMD FidelityFX Super Resolution |
| DirectX | 12 Ultimate |
vs Competition
| Spec | ASRock Radeon RX 6400 Challenger | ASUS TUF Gaming TUF-RTX5090-32G-GAMING | MSI Ventus RTX 5070 Ti 16G VENTUS 3X PZ OC | Gigabyte AERO GV-N5080AERO OC-16GD | ZOTAC APOCALYPSE ZT-B50800C-10P | Sapphire NITRO+ 11322-01-40G |
|---|---|---|---|---|---|---|
| Chipset | Radeon RX 6400 | GeForce RTX 5090 | GeForce RTX 5070 Ti | GeForce RTX 5080 | GeForce RTX 5080 | Radeon RX 7900 XTX |
| Vram | 4GB GDDR6 | 32GB GDDR7 | 16GB GDDR7 | 16GB GDDR7 | 16GB GDDR7 | 24GB GDDR6 |
| Boost Clock Mhz | 2321 | 2407 | 2482 | 2730 | 2730 | 2680 |
| Tdp W | 53 | 575 | 300 | 360 | 360 | 339 |
| Memory Bus Bits | 64 | 512 | 256 | 256 | 256 | 384 |
| Ray Tracing | true | true | true | true | true | true |
| GPU Class | consumer | consumer | consumer | consumer | consumer | consumer |
| Compare | Compare | Compare | Compare | Compare |
| Product | AI | Rt | Vram | Raster | Compute | Feature | Thermal | Efficiency | Connectivity | Social Proof | Affordability |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ASRock Radeon RX 6400 Challenger | 15.8 | 25.8 | 17.6 | 20 | 14.1 | 53.4 | 34.6 | 95.6 | 32.2 | 75.6 | 70.3 |
| ASUS TUF Gaming TUF-RTX5090-32G-GAMING Compare | 96.7 | 90 | 97.4 | 98.6 | 97.4 | 96.4 | 72.8 | 26.8 | 99.2 | 99.1 | 3.4 |
| MSI Ventus RTX 5070 Ti 16G VENTUS 3X PZ OC Compare | 79 | 92.1 | 85.3 | 88.4 | 87.8 | 96.4 | 91.5 | 73.4 | 94.1 | 88.8 | 21 |
| Gigabyte AERO GV-N5080AERO OC-16GD Compare | 85 | 95.2 | 88.5 | 94.1 | 93.1 | 96.4 | 91.5 | 58.9 | 94.1 | 88.8 | 15.9 |
| ZOTAC APOCALYPSE ZT-B50800C-10P Compare | 85 | 97.5 | 88.5 | 94.1 | 93.1 | 96.4 | 91.5 | 58.9 | 94.1 | 99.1 | 19.6 |
| Sapphire NITRO+ 11322-01-40G Compare | 94.7 | 96.2 | 91.5 | 83.6 | 95.4 | 84.4 | 91.5 | 54.5 | 98.7 | 78.4 | 15.7 |
Price
Value & Pricing
We started tracking prices for this product on Jul 12, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
