CMP 40HX vs RTX PRO 4000 Blackwell for Blender
Compare CMP 40HX 8 GB and RTX PRO 4000 Blackwell 24 GB for Blender Cycles. See benchmark performance, VRAM, power ratings and checked prices side by side. RTX PRO 4000 Blackwell 24 GB leads the Blender benchmark score by 462.6%.
Fastest in Cycles
RTX PRO 4000 Blackwell 24 GB
463% faster than CMP 40HX 8 GB
Most VRAM
RTX PRO 4000 Blackwell 24 GB
200% more VRAM than CMP 40HX 8 GB
Lowest power draw
RTX PRO 4000 Blackwell 24 GB
24% lower rating than CMP 40HX 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. | $3,102.45 Checked Oct 4, 2026 |
| Value for money | N/A | 2.12 |
| Performance | ||
| Blender benchmark score | 1,170.87 | 6,586.97 +463% |
| CUDA cores | 2,304 | 8,960 +289% |
| Boost clock | 1650 MHz | 2055 MHz +25% |
| RT cores | 36 | 70 +94% |
| Tensor cores | 288 +3% | 280 |
| Memory | ||
| VRAM | 8 GB Meets Blender’s recommended VRAM | 24 GB More capacity for heavy scenes+200% |
| Memory bandwidth | 448 GB/s | 672 GB/s +50% |
| Memory type | GDDR6 | GDDR7 |
| Memory bus | 256-bit +33% | 192-bit |
| Platform | ||
| Architecture | Turing | Blackwell 2.0 |
| Render support | CUDA, OpenCL | CUDA, OpenCL |
| TDP | 185 W | 140 W −24% |
| System PSU | 450 W Secondary source suggestion | 300 W Secondary source suggestion−33% |
| Release year | 2021 | 2025 |
Blender Cycles benchmarks
Estimated seconds / frame Lower is faster
CMP 40HX 8 GB
Blender 4.4.0 · OptiX · 5 runs
RTX PRO 4000 Blackwell 24 GB
Blender 5.2.0 · OptiX · 7 runs
Junkshop
Monster
Classroom
Which GPU should you choose for Blender?
RTX PRO 4000 Blackwell 24 GB is the stronger Blender rendering pick here based on benchmark score.
Cycles rendering performance
RTX PRO 4000 Blackwell 24 GB leads by 462.6% in the Renderjuice Blender benchmark model (6,587 vs 1,171). For render-time-first decisions, that is the card to prioritize.
VRAM and scene capacity
RTX PRO 4000 Blackwell 24 GB has more scene headroom with 24 GB of VRAM versus 8 GB on CMP 40HX 8 GB. That matters most for large environments, dense geometry, high-resolution textures, and less optimized production files.
Power ratings and cooling
RTX PRO 4000 Blackwell 24 GB is the lower-power option at 140 W TDP, compared with 185 W for CMP 40HX 8 GB. If render speed is close, that can make RTX PRO 4000 Blackwell 24 GB easier to cool and run quietly.
Is the upgrade worthwhile?
RTX PRO 4000 Blackwell 24 GB is both the newer and faster Blender rendering choice here. The main reason to choose CMP 40HX 8 GB would be price, availability, existing ownership, or a specific workstation requirement.
Comparison summary
RTX PRO 4000 Blackwell 24 GB leads the Blender benchmark score by 462.6%.
Fastest in Cycles: RTX PRO 4000 Blackwell 24 GB 463% faster than CMP 40HX 8 GB.
Most VRAM: RTX PRO 4000 Blackwell 24 GB 200% more VRAM than CMP 40HX 8 GB.
Lowest power draw: RTX PRO 4000 Blackwell 24 GB 24% lower rating than CMP 40HX 8 GB.
Cheapest: Cannot compare Price unavailable for some GPUs.
Best value for money: Cannot compare Price or benchmark unavailable for some GPUs.
CMP 40HX 8 GB has 8 GB of VRAM, while RTX PRO 4000 Blackwell 24 GB has 24 GB, which matters when scenes, textures, or geometry get heavier.
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.