NVIDIA CMP 70HX vs NVIDIA RTX PRO 4000 Blackwell Comparison

NVIDIA CMP 70HX and NVIDIA RTX PRO 4000 Blackwell are both NVIDIA GPUs, but they are built for entirely different purposes. The CMP 70HX is a mining-specific card with no display outputs, while the RTX PRO 4000 Blackwell is an active workstation card with full display support. The recorded data shows a clear generational and architectural divide, with the RTX PRO 4000 Blackwell dominating in raw compute and the CMP 70HX holding its ground only in niche benchmark scenarios.

Head-to-Head Benchmarks

The database contains one direct head-to-head comparison between these two cards: the Geekbench Vulkan test. In this test, the NVIDIA RTX PRO 4000 Blackwell scores 194,168, while the NVIDIA CMP 70HX scores 35,817. The RTX PRO 4000 Blackwell wins with a delta of -81.6%, meaning it is roughly 5.4 times faster than the CMP 70HX in this API workload. This is not a marginal victory; it is a dramatic performance gap that reflects the fundamental differences in compute resources, memory capacity, and architecture generation.

Looking at the broader average benchmark scores, the CMP 70HX has an average of 30,476, while the RTX PRO 4000 Blackwell has an average of 27,135. Interestingly, the CMP 70HX holds a slight advantage in this aggregate metric, but this is misleading because the average includes different benchmark suites. The CMP 70HX's average is based on only two tests (Geekbench OpenCL and Vulkan), while the RTX PRO 4000 Blackwell's average includes nine tests, several of which are older DirectX and Passmark workloads where it scores very low (e.g., Passmark DirectX 12 at 97 and Passmark DirectX 10 at 173). The CMP 70HX's average is inflated by the absence of these legacy tests in its record.

In terms of percentile ranking, the CMP 70HX sits at the 75th percentile among all GPUs, while the RTX PRO 4000 Blackwell sits at the 72nd percentile. Despite the RTX PRO 4000 Blackwell's massive Vulkan win, its overall percentile is slightly lower, again due to the mixed benchmark set dragging down its average. The nearest rivals for the CMP 70HX include the NVIDIA Tesla M60 (avg 30,490, delta 0%), AMD Radeon RX 6700 (avg 30,433, delta 0.1%), AMD Radeon RX 6800 (avg 30,095, delta 1.3%), and NVIDIA GeForce RTX 3070 Ti (avg 29,945, delta 1.8%). For the RTX PRO 4000 Blackwell, the nearest rivals are the AMD Radeon RX 6700 XT (avg 27,425, delta -1.1%), NVIDIA GeForce RTX 4070 Mobile (avg 27,435, delta -1.1%), NVIDIA GeForce RTX 3090 (avg 27,565, delta -1.6%), and NVIDIA RTX A4000 (avg 26,683, delta 1.7%). The CMP 70HX is roughly 12% above the RTX PRO 4000 Blackwell's nearest rival cluster in average score, but again, this is a function of test selection, not raw capability.

Architecture Differences

The CMP 70HX is built on the GA104 chip using the Ampere architecture, fabricated on Samsung's 8 nm process. It contains 17,400 million transistors on a die size of 392 mm², giving a transistor density of 44.4 million per mm². The RTX PRO 4000 Blackwell uses the GB203 chip with the Blackwell 2.0 architecture, fabricated on TSMC's 5 nm process. It packs 45,600 million transistors on a smaller die of 378 mm², resulting in a much higher density of 120.6 million per mm². The RTX PRO 4000 Blackwell has more than 2.6 times the transistor count in a slightly smaller physical package, which directly enables its higher core counts and memory bandwidth.

Core configuration differs massively. The CMP 70HX has 3,840 shading units, 120 texture mapping units, and 64 ROPs. The RTX PRO 4000 Blackwell has 8,960 shading units, 280 TMUs, and 96 ROPs. That is 2.3 times the shader count, 2.3 times the TMUs, and 1.5 times the ROPs. The RTX PRO 4000 Blackwell also has 70 RT cores and 280 tensor cores, compared to 30 RT cores and 120 tensor cores on the CMP 70HX. This means the RTX PRO 4000 Blackwell has 2.3 times the ray tracing hardware and 2.3 times the tensor throughput, making it far more capable for modern games and AI workloads.

Clock speeds tell an interesting story. The CMP 70HX has a base clock of 1365 MHz and a boost clock of 1395 MHz. The RTX PRO 4000 Blackwell has a lower base clock of 1230 MHz but a much higher boost clock of 2055 MHz. The boost delta is significant: the RTX PRO 4000 Blackwell sustains a 47% higher boost frequency, which combined with more cores yields a massive compute advantage. The memory clock also differs: the CMP 70HX runs at 1188 MHz (19 Gbps effective) while the RTX PRO 4000 Blackwell runs at 1750 MHz (28 Gbps effective).

Memory architecture is a major divider. The CMP 70HX has 8 GB of GDDR6X on a 256-bit bus, yielding 608.3 GB/s of bandwidth. The RTX PRO 4000 Blackwell has 24 GB of GDDR7 on a 192-bit bus, yielding 672.0 GB/s. Despite the narrower bus, the RTX PRO 4000 Blackwell delivers 10% more bandwidth thanks to the faster memory technology. The capacity difference is 3x, which is critical for large datasets, high-resolution textures, and multi-app workstation workflows.

FAQ

Q: Which card has more raw compute power?

A: The RTX PRO 4000 Blackwell is decisively ahead. Its FP32 throughput is 36.83 TFLOPS versus 10.71 TFLOPS on the CMP 70HX, a 3.4x advantage. The pixel rate is 197.3 GPixel/s versus 89.28 GPixel/s, and the texture rate is 575.4 GTexel/s versus 167.4 GTexel/s.

Q: Can the CMP 70HX be used for display output?

A: No. The CMP 70HX has no display outputs at all. The RTX PRO 4000 Blackwell has 4x DisplayPort 2.1b outputs, making it a full workstation card for driving monitors.

Q: What is the power requirement for each card?

A: The CMP 70HX has a suggested PSU of 200 W and uses a 1x 12-pin connector. The RTX PRO 4000 Blackwell has a TDP of 140 W, a suggested PSU of 300 W, and uses a 1x 16-pin connector. The RTX PRO 4000 Blackwell draws less power under load despite being far faster.

Q: Which card is physically smaller?

A: The RTX PRO 4000 Blackwell is 241 mm long, 111 mm high, and 20 mm wide, fitting in a single slot. The CMP 70HX is 267 mm long, 112 mm high, and is dual-slot. The RTX PRO 4000 Blackwell is shorter and thinner.

Q: What is the memory capacity difference?

A: The CMP 70HX has 8 GB of GDDR6X, while the RTX PRO 4000 Blackwell has 24 GB of GDDR7. The RTX PRO 4000 Blackwell offers 3 times the capacity with slightly higher bandwidth (672.0 GB/s versus 608.3 GB/s).

Q: Which card has a better PCIe interface?

A: The RTX PRO 4000 Blackwell uses PCIe 5.0 x16, while the CMP 70HX uses PCIe 1.0 x4. The RTX PRO 4000 Blackwell has a vastly faster and more modern bus interface, reducing transfer bottlenecks.

Specification Differences

| Specification | NVIDIA CMP 70HX | NVIDIA RTX PRO 4000 Blackwell |

|----------------|-----------------|-------------------------------|

| Chip | GA104 | GB203 |

| Architecture | Ampere | Blackwell 2.0 |

| Process Node | 8 nm (Samsung) | 5 nm (TSMC) |

| Transistors | 17,400 million | 45,600 million |

| Die Size | 392 mm² | 378 mm² |

| Transistor Density | 44.4M / mm² | 120.6M / mm² |

| Base Clock | 1365 MHz | 1230 MHz |

| Boost Clock | 1395 MHz | 2055 MHz |

| Memory Clock | 1188 MHz (19 Gbps effective) | 1750 MHz (28 Gbps effective) |

| Memory Size | 8 GB | 24 GB |

| Memory Type | GDDR6X | GDDR7 |

| Memory Bus Width | 256 bit | 192 bit |

| Memory Bandwidth | 608.3 GB/s | 672.0 GB/s |

| Shading Units | 3840 | 8960 |

| TMUs | 120 | 280 |

| ROPs | 64 | 96 |

| RT Cores | 30 | 70 |

| Tensor Cores | 120 | 280 |

| Pixel Rate | 89.28 GPixel/s | 197.3 GPixel/s |

| Texture Rate | 167.4 GTexel/s | 575.4 GTexel/s |

| FP32 | 10.71 TFLOPS | 36.83 TFLOPS |

| FP16 | 10.71 TFLOPS (1:1) | 36.83 TFLOPS (1:1) |

| TDP | Not specified | 140 W |

| Slot Width | Dual-slot | Single-slot |

| Power Connectors | 1x 12-pin | 1x 16-pin |

| Suggested PSU | 200 W | 300 W |

| Bus Interface | PCIe 1.0 x4 | PCIe 5.0 x16 |

| Display Outputs | No outputs | 4x DisplayPort 2.1b |

| Length | 267 mm (10.5 inches) | 241 mm (9.5 inches) |

| Height | 112 mm (4.4 inches) | 111 mm (4.4 inches) |

| Production Status | End-of-life | Active |

| Release Date | Not specified | 2025-03-17 |

Where Each One Wins

The RTX PRO 4000 Blackwell wins in every meaningful compute category. It has 3.4x the FP32 throughput, 2.3x the shading units, 2.3x the RT cores, and 2.3x the tensor cores. Its Vulkan score of 194,168 versus 35,817 shows a massive API performance lead. The 24 GB memory capacity supports larger datasets and multi-tasking, and the faster GDDR7 memory with higher bandwidth (672.0 GB/s versus 608.3 GB/s) benefits memory-bound workloads. The single-slot design, lower TDP of 140 W, and modern PCIe 5.0 x16 interface make it a practical choice for dense workstation builds. The 4x DisplayPort 2.1b outputs enable multi-monitor setups.

The CMP 70HX has no true performance wins in the recorded data. Its only advantages are structural: it has a 256-bit memory bus (wider than the 192-bit bus on the RTX PRO 4000 Blackwell), and its average benchmark score is higher (30,476 versus 27,135) due to the limited test set. The CMP 70HX's percentile ranking is also slightly higher at 75 versus 72. However, these are artifacts of benchmark selection, not genuine superiority. The CMP 70HX is end-of-life, has no display outputs, and uses an outdated PCIe 1.0 x4 interface, which severely limits its utility in modern systems.

The Verdict

The data is unambiguous: the NVIDIA RTX PRO 4000 Blackwell is the superior card for any real-world use case. It delivers a 3.4x FP32 advantage, a 5.4x Vulkan performance lead, triple the memory capacity, and a more efficient architecture on a smaller, single-slot design. Anyone needing compute performance, ray tracing, tensor operations, or display output should choose the RTX PRO 4000 Blackwell. The CMP 70HX is a legacy mining part with no display outputs, an end-of-life status, and a PCIe 1.0 x4 bus that bottlenecks even modest workloads. Its wider 256-bit memory bus and higher average score in a narrow test set do not compensate for its severe limitations. For a builder selecting between these two, the RTX PRO 4000 Blackwell is the only rational choice based on benchmark results and specifications.