RX 6400 vs RX 6600 for Blender
Compare RX 6400 4 GB and RX 6600 8 GB for Blender Cycles. See benchmark performance, VRAM, power ratings and checked prices side by side. RX 6600 8 GB leads the Blender benchmark score by 150.3%.
Fastest in Cycles
RX 6600 8 GB
150% faster than RX 6400 4 GB
Most VRAM
RX 6600 8 GB
100% more VRAM than RX 6400 4 GB
Lowest power draw
RX 6400 4 GB
60% lower rating than RX 6600 8 GB
Cheapest
Cannot compare
Price unavailable for some GPUs
Best value for money
Cannot compare
Price or benchmark unavailable for some GPUs
| Spec | ||
|---|---|---|
| Lowest price | Price unavailable No current offer matches your preferences. | $457.81 Checked Oct 2, 2026 |
| Value for money | N/A | 1.65 |
| Performance | ||
| Blender benchmark score | 301.42 | 754.43 +150% |
| Boost clock | 2321 MHz | 2491 MHz +7% |
| RT cores | 12 | 28 +133% |
| Memory | ||
| VRAM | 4 GB Below Blender’s recommended VRAM | 8 GB Meets Blender’s recommended VRAM+100% |
| Memory bandwidth | 128 GB/s | 224 GB/s +75% |
| Memory type | GDDR6 | GDDR6 |
| Memory bus | 64-bit | 128-bit +100% |
| Platform | ||
| Architecture | RDNA 2.0 | RDNA 2.0 |
| Render support | OpenCL | OpenCL |
| TDP | 53 W −60% | 132 W |
| System PSU | 350 W Manufacturer requirement−22% | 450 W Manufacturer requirement |
| Release year | 2022 | 2021 |
Blender Cycles benchmarks
Estimated seconds / frame Lower is faster
RX 6400 4 GB
Blender 4.0.0 · HIP · 9 runs
RX 6600 8 GB
Blender 5.2.0 · HIP · 13 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
RX 6600 8 GB leads by 150.3% in the Renderjuice Blender benchmark model (754 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 132 W for RX 6600 8 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
RX 6600 8 GB leads the Blender benchmark score by 150.3%.
Fastest in Cycles: RX 6600 8 GB 150% faster than RX 6400 4 GB.
Most VRAM: RX 6600 8 GB 100% more VRAM than RX 6400 4 GB.
Lowest power draw: RX 6400 4 GB 60% lower rating than RX 6600 8 GB.
Cheapest: Cannot compare Price unavailable for some GPUs.
Best value for money: Cannot compare Price or benchmark unavailable for some GPUs.
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.