A2 vs RX 6400 for Blender
Compare A2 16 GB and RX 6400 4 GB for Blender Cycles. See benchmark performance, VRAM, power ratings and checked prices side by side. A2 16 GB leads the Blender benchmark score by 226.1%.
Fastest in Cycles
A2 16 GB
226% faster than RX 6400 4 GB
Most VRAM
A2 16 GB
300% more VRAM than RX 6400 4 GB
Lowest power draw
RX 6400 4 GB
12% lower rating than A2 16 GB
Cheapest
RX 6400 4 GB
53% cheaper than A2 16 GB
Best value for money
A2 16 GB
54% better value than RX 6400 4 GB
GPU comparison
Key specifications for Blender rendering.
| Spec | A2 16 GB | RX 6400 4 GB |
|---|---|---|
| Lowest price | $770.00 Checked Oct 9, 2026 | $362.74 Checked Oct 9, 2026 |
| Value for money | 1.28 +54% | 0.83 |
| Blender benchmark score | 982.86 +226% | 301.42 |
| VRAM | 16 GB More headroom for complex scenes+300% | 4 GB Below Blender’s recommended VRAM |
| System PSU | 250 W Secondary source suggestion−29% | 350 W Manufacturer requirement |
| Render support | CUDA, OpenCL | OpenCL |
| Performance | ||
| CUDA cores | 1,280 | N/A |
| Boost clock | 1770 MHz | 2321 MHz +31% |
| RT cores | 10 | 12 +20% |
| Tensor cores | 40 | N/A |
| Memory | ||
| Memory bandwidth | 200.1 GB/s +56% | 128 GB/s |
| Memory type | GDDR6 | GDDR6 |
| Memory bus | 128-bit +100% | 64-bit |
| Platform | ||
| Architecture | Ampere | RDNA 2.0 |
| TDP | 60 W | 53 W −12% |
| Release year | 2021 | 2022 |
Blender Cycles benchmarks
Estimated seconds / frame Lower is faster
A2 16 GB
Blender 3.5.0 · OptiX · 6 runs
RX 6400 4 GB
Blender 4.0.0 · HIP · 9 runs
Junkshop
Monster
Classroom
Which GPU should you choose for Blender?
RX 6400 4 GB (4 GB) meets Blender’s 2 GB VRAM minimum but is below its 8 GB recommendation. Check scene memory needs and GPU compatibility.
Cycles rendering performance
A2 16 GB leads by 226.1% in the Renderjuice Blender benchmark model (983 vs 301). RX 6400 4 GB (4 GB) meets Blender’s 2 GB VRAM minimum but is below its 8 GB recommendation. Check scene memory needs and GPU compatibility.
VRAM and scene capacity
RX 6400 4 GB (4 GB) meets Blender’s 2 GB VRAM minimum but is below its 8 GB recommendation. Check scene memory needs and GPU compatibility.
Power ratings and cooling
RX 6400 4 GB is the lower-power option at 53 W TDP, compared with 60 W for A2 16 GB. If render speed is close, that can make RX 6400 4 GB easier to cool and run quietly.
Is the upgrade worthwhile?
RX 6400 4 GB (4 GB) meets Blender’s 2 GB VRAM minimum but is below its 8 GB recommendation. Check scene memory needs and GPU compatibility.
Comparison summary
A2 16 GB leads the Blender benchmark score by 226.1%.
Fastest in Cycles: A2 16 GB 226% faster than RX 6400 4 GB.
Most VRAM: A2 16 GB 300% more VRAM than RX 6400 4 GB.
Lowest power draw: RX 6400 4 GB 12% lower rating than A2 16 GB.
Cheapest: RX 6400 4 GB 53% cheaper than A2 16 GB.
Best value for money: A2 16 GB 54% better value than RX 6400 4 GB.
RX 6400 4 GB (4 GB) meets Blender’s 2 GB VRAM minimum but is below its 8 GB recommendation. Check scene memory needs and GPU compatibility.
If you are deciding between these cards for Blender, focus first on Blender benchmark score, VRAM capacity, memory bandwidth, and whether your scenes are likely to benefit more from raw speed or extra memory headroom. The comparison table above keeps those tradeoffs in one place.