NVIDIA CMP 70HX vs NVIDIA RTX PRO 4500 Blackwell Comparison

The NVIDIA RTX PRO 4500 Blackwell and NVIDIA CMP 70HX represent two divergent paths in NVIDIA’s lineup: one is a modern workstation accelerator built for professional rendering and compute, the other a discontinued mining card with no display outputs. The data shows a decisive performance gap, but the comparison is not merely about speed — it is about architectural generation, memory capacity, and intended use. The RTX PRO 4500 Blackwell wins the only shared benchmark by a staggering margin, yet the CMP 70HX still holds a place in the dataset for those analyzing legacy mining hardware.

The Verdict

The NVIDIA RTX PRO 4500 Blackwell is the clear choice for any professional workload that can leverage its hardware. Its average benchmark score of 31532 places it in the 76th percentile of all GPUs, while the CMP 70HX sits at 30476 in the 75th percentile. The delta between their average scores is only 3.5%, but that figure masks the real story: the RTX PRO 4500 Blackwell delivers 221768 in Geekbench Vulkan against the CMP 70HX’s 35817, a 519.2% advantage. This is not a close contest in raw compute.

For creators, engineers, or researchers, the RTX PRO 4500 Blackwell is the only defensible option. It offers 32 GB of GDDR7 memory, 10496 shading units, and 82 RT cores, all housed in an active production card with DisplayPort 2.1b outputs. The CMP 70HX, by contrast, is end-of-life, has no display outputs, and cannot be used for any visual task without a secondary GPU. Its 8 GB of GDDR6X memory and 3840 shading units are a fraction of the Blackwell card’s resources.

The CMP 70HX is only relevant in a historical or niche mining context. Its PCIe 1.0 x4 interface severely limits data transfer, and its 10.71 TFLOPS FP32 performance is roughly one-fifth of the RTX PRO 4500 Blackwell’s 50.53 TFLOPS. The benchmark data shows no scenario where the CMP 70HX outperforms the RTX PRO 4500 Blackwell — it wins zero head-to-head tests. The verdict is straightforward: the RTX PRO 4500 Blackwell dominates, and the CMP 70HX is a legacy artifact.

Architecture Differences

The two cards are built on entirely different architectures and process nodes. The RTX PRO 4500 Blackwell uses the GB203 chip on a 5 nm process from TSMC, with 45,600 million transistors packed into a 378 mm² die. That yields a transistor density of 120.6 million per mm². The CMP 70HX, in contrast, uses the GA104 chip on Samsung’s 8 nm process, with 17,400 million transistors on a larger 392 mm² die, resulting in a much lower density of 44.4 million per mm².

The Blackwell architecture is designated as Blackwell 2.0, while the CMP 70HX is based on Ampere. This generational leap explains the massive differences in core counts and features. The RTX PRO 4500 Blackwell has 10496 shading units, 328 TMUs, and 112 ROPs, compared to the CMP 70HX’s 3840 shading units, 120 TMUs, and 64 ROPs. RT core counts are 82 versus 30, and tensor cores are 328 versus 120.

Memory architecture also diverges sharply. The RTX PRO 4500 Blackwell uses 32 GB of GDDR7 on a 256-bit bus, achieving 896.0 GB/s of bandwidth. The CMP 70HX has 8 GB of GDDR6X on the same 256-bit bus, but only reaches 608.3 GB/s. Clock speeds favor the newer card as well: the RTX PRO 4500 Blackwell boosts to 2407 MHz from a 1635 MHz base, while the CMP 70HX tops out at 1395 MHz with a 1365 MHz base. The RTX PRO 4500 Blackwell’s memory runs at 1750 MHz (28 Gbps effective), versus the CMP 70HX’s 1188 MHz (19 Gbps effective).

The CMP 70HX lacks any display outputs, while the RTX PRO 4500 Blackwell provides four DisplayPort 2.1b connections. The bus interface differs too: the RTX PRO 4500 Blackwell uses PCIe 5.0 x16, while the CMP 70HX is limited to PCIe 1.0 x4. The power connector is a 16-pin on the Blackwell card versus a 12-pin on the CMP 70HX, and the suggested PSU is 550 W versus 200 W, though the CMP 70HX has no listed TDP.

FAQ

Q: Which card has higher raw graphics performance in the shared benchmark?

A: The NVIDIA RTX PRO 4500 Blackwell scores 221768 in Geekbench Vulkan, which is 519.2% higher than the NVIDIA CMP 70HX’s 35817. The RTX PRO 4500 Blackwell wins the only head-to-head test.

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

A: No. The CMP 70HX has no display outputs, while the RTX PRO 4500 Blackwell offers four DisplayPort 2.1b ports. This makes the CMP 70HX unsuitable for any visual workstation task without a secondary GPU.

Q: How do their memory capacities and types compare?

A: The RTX PRO 4500 Blackwell has 32 GB of GDDR7 with 896.0 GB/s bandwidth, while the CMP 70HX has 8 GB of GDDR6X with 608.3 GB/s bandwidth. Both use a 256-bit bus.

Q: What is the production status of each card?

A: The RTX PRO 4500 Blackwell is listed as Active, with a release date of 2025-03-17. The CMP 70HX is End-of-life, with no release date provided in the data.

Q: How do their compute capabilities differ in FP32?

A: The RTX PRO 4500 Blackwell delivers 50.53 TFLOPS FP32, while the CMP 70HX delivers 10.71 TFLOPS. That is a roughly 4.7x difference in raw floating-point throughput.

Q: Which card has a better transistor density?

A: The RTX PRO 4500 Blackwell’s 5 nm process yields 120.6 million transistors per mm², compared to the CMP 70HX’s 44.4 million per mm² on 8 nm. This reflects the newer, denser manufacturing technology.

Specification Differences

• Chip: GB203 (RTX PRO 4500 Blackwell) vs GA104 (CMP 70HX)
• Architecture: Blackwell 2.0 vs Ampere
• Process Node: 5 nm (TSMC) vs 8 nm (Samsung)
• Transistors: 45,600 million vs 17,400 million
• Die Size: 378 mm² vs 392 mm²
• Transistor Density: 120.6M / mm² vs 44.4M / mm²
• Base Clock: 1635 MHz vs 1365 MHz
• Boost Clock: 2407 MHz vs 1395 MHz
• Memory Clock: 1750 MHz (28 Gbps effective) vs 1188 MHz (19 Gbps effective)
• Memory Size: 32 GB vs 8 GB
• Memory Type: GDDR7 vs GDDR6X
• Memory Bandwidth: 896.0 GB/s vs 608.3 GB/s
• Shading Units: 10496 vs 3840
• TMUs: 328 vs 120
• ROPs: 112 vs 64
• RT Cores: 82 vs 30
• Tensor Cores: 328 vs 120
• Pixel Rate: 269.6 GPixel/s vs 89.28 GPixel/s
• Texture Rate: 789.5 GTexel/s vs 167.4 GTexel/s
• FP32: 50.53 TFLOPS vs 10.71 TFLOPS
• FP16: 50.53 TFLOPS (1:1) vs 10.71 TFLOPS (1:1)
• TDP: 200 W vs null
• Power Connectors: 1x 16-pin vs 1x 12-pin
• Suggested PSU: 550 W vs 200 W
• Bus Interface: PCIe 5.0 x16 vs PCIe 1.0 x4
• Display Outputs: 4x DisplayPort 2.1b vs No outputs
• Production Status: Active vs End-of-life
• Release Date: 2025-03-17 vs null
• Dimensions: Height 111 mm vs 112 mm (length and width identical at 267 mm / 10.5 inches, width 40 mm for RTX, null for CMP)

Head-to-Head Benchmarks

The only shared benchmark in the dataset is Geekbench Vulkan, and the results are lopsided. The RTX PRO 4500 Blackwell scores 221768, while the CMP 70HX manages just 35817. The delta is 519.2%, meaning the Blackwell card is more than six times faster in this API test. This is a direct consequence of the architectural gulf: the RTX PRO 4500 Blackwell has 10496 shading units to the CMP 70HX’s 3840, 82 RT cores to 30, and a boost clock of 2407 MHz versus 1395 MHz.

Beyond that single test, the RTX PRO 4500 Blackwell’s benchmark suite shows broad strength. It scores 7025 in 3DMark Steel Nomad DX12, 33360 in Passmark G3D, and 19255 in Passmark GPU Compute. The CMP 70HX has only one additional benchmark, Geekbench OpenCL at 25135, which cannot be directly compared to any RTX PRO 4500 Blackwell result. The average benchmark scores tell a similar story: 31532 for the RTX PRO 4500 Blackwell versus 30476 for the CMP 70HX, a 3.5% difference in aggregate performance.

The nearest rivals for each card further contextualize the results. The RTX PRO 4500 Blackwell’s closest competitor is the NVIDIA TITAN RTX at 31676, which is 0.5% ahead, while the Intel Arc Pro A30M trails by 1.1%. The CMP 70HX sits near the NVIDIA Tesla M60 (0% delta), the AMD Radeon RX 6700 (0.1% ahead), and the AMD Radeon RX 6800 (1.3% ahead). These figures suggest that while the RTX PRO 4500 Blackwell is a high-end workstation part, the CMP 70HX is roughly on par with mid-range consumer GPUs from the previous generation — but without any display capability to use them. In every measurable way, the RTX PRO 4500 Blackwell is the superior product, and the CMP 70HX’s only relevance is as a data point in mining GPU history.