AMD Radeon Pro Duo vs NVIDIA CMP 70HX Comparison

Head-to-Head Benchmarks

The recorded benchmark data shows a decisive overall winner, with the AMD Radeon Pro Duo taking the only head-to-head victory. In the Geekbench OpenCL test, the Radeon Pro Duo scores 35,860 against the NVIDIA CMP 70HX's 25,135, a margin of 42.7%. That is a substantial gap, roughly four-tenths ahead of the NVIDIA card in raw compute throughput as measured by this test.

The NVIDIA CMP 70HX does not win any of the direct comparison benchmarks in this database. However, the NVIDIA card does have a second recorded result in Geekbench Vulkan, scoring 35,817, which is close to the AMD card's OpenCL score of 35,860. This is worth noting because it shows the NVIDIA card is capable of competitive performance under a different API, but since the AMD card was not tested under Vulkan, no direct head-to-head comparison can be drawn from that data.

Looking at the broader percentile rankings, the AMD Radeon Pro Duo sits at the 80th percentile among all GPUs in the database. The NVIDIA CMP 70HX sits at the 75th percentile. The AMD card's average benchmark score is 35,860, while the NVIDIA card's average across its two recorded tests is 30,476. That average difference of roughly 5,384 points, or about 17.7%, aligns with the OpenCL result showing AMD's advantage.

The nearest rival data places the AMD card among a tight cluster. The NVIDIA Quadro GV100 scores 35,520, just 1% below the Radeon Pro Duo. The NVIDIA GeForce RTX 5070 Ti Mobile scores 35,435, 1.2% behind. The NVIDIA T1000 scores 36,289, which is 1.2% ahead of the AMD card, and the AMD Radeon RX 5300M scores 36,529, 1.8% ahead. The data shows the Radeon Pro Duo is competitive with these cards, sitting in the middle of that grouping.

For the NVIDIA CMP 70HX, the nearest rivals show a different story. The NVIDIA Tesla M60 scores 30,490, a 0% delta. The AMD Radeon RX 6700 scores 30,433, just 0.1% behind. The AMD Radeon RX 6800 scores 30,095, 1.3% behind. The NVIDIA GeForce RTX 3070 Ti scores 29,945, 1.8% behind. The CMP 70HX's average of 30,476 places it slightly ahead of these rivals, but only marginally.

Architecture Differences

The two cards come from fundamentally different design eras. The AMD Radeon Pro Duo uses the Capsaicin chip built on GCN 3.0 architecture, fabricated on a 28 nm process at TSMC. The CMP 70HX uses the GA104 chip on Ampere architecture, built on an 8 nm process at Samsung. The process node difference is significant: 28 nm versus 8 nm, which directly impacts transistor density. The AMD chip packs 8,900 million transistors on a 596 mm² die, giving a density of 14.9 million transistors per square millimeter. The NVIDIA chip packs 17,400 million transistors on a 392 mm² die, for a density of 44.4 million per square millimeter. That is nearly three times the density, a direct consequence of the newer fabrication process.

Memory architecture also diverges sharply. The AMD card uses 4 GB of HBM on a 4096-bit bus, delivering 512.0 GB/s of bandwidth. The NVIDIA card uses 8 GB of GDDR6X on a 256-bit bus, delivering 608.3 GB/s. The NVIDIA card has both more capacity and higher bandwidth, despite the narrower bus, due to the higher memory clock. The recorded memory clocks show the AMD card running at 500 MHz (1000 Mbps effective) while the NVIDIA card runs at 1188 MHz (19 Gbps effective). This explains the bandwidth advantage.

Compute resources differ in configuration. The AMD card has 4,096 shading units, 256 TMUs, and 64 ROPs. The NVIDIA card has 3,840 shading units, 120 TMUs, and 64 ROPs. The AMD card has more shading units and TMUs, but the NVIDIA card has dedicated ray tracing cores (30) and tensor cores (120). The AMD card has no such dedicated units. The pixel rate favors NVIDIA at 89.28 GPixel/s versus 64.00 GPixel/s for AMD, a 39.5% advantage. The texture rate favors AMD at 256.0 GTexel/s versus 167.4 GTexel/s, a 52.9% advantage. FP32 compute favors NVIDIA at 10.71 TFLOPS versus 8.192 TFLOPS, a 30.7% advantage. FP16 compute mirrors FP32 on both cards at a 1:1 ratio, so the same percentage differences apply.

The NVIDIA card supports PCIe 1.0 x4, which is a notable limitation, while the AMD card supports PCIe 3.0 x16. The NVIDIA card has no display outputs, reflecting its mining-oriented design. The AMD card has 1x HDMI 1.4a and 3x DisplayPort 1.2 outputs. API support also differs: the NVIDIA card supports DirectX 12 Ultimate (12_2), while the AMD card supports DirectX 12 (12_0). Vulkan support on the NVIDIA card is version 1.4 versus 1.2.170 on the AMD card.

Where Each One Wins

The AMD Radeon Pro Duo wins in OpenCL compute workloads, as evidenced by the 42.7% margin over the CMP 70HX. This suggests the AMD card is better suited for applications that rely on OpenCL acceleration. The AMD card also wins on texture throughput, with its 256.0 GTexel/s versus 167.4 GTexel/s, which could benefit texture-heavy workloads. The AMD card's dual-slot design and three 8-pin power connectors indicate it was designed for professional workstations with generous power delivery.

The NVIDIA CMP 70HX wins on raw FP32 compute, delivering 10.71 TFLOPS versus 8.192 TFLOPS. This gives it a 30.7% advantage in general-purpose compute tasks that scale with FP32 throughput. The NVIDIA card also wins on memory capacity and bandwidth, with 8 GB versus 4 GB and 608.3 GB/s versus 512.0 GB/s. This makes it better suited for workloads with larger memory footprints. The NVIDIA card's ray tracing and tensor cores provide capabilities the AMD card lacks entirely, making it the only choice for workloads that leverage those features. The NVIDIA card's pixel rate of 89.28 GPixel/s versus 64.00 GPixel/s also gives it an advantage in rasterization-heavy tasks.

The power requirements differ significantly. The AMD card has a TDP of 350 W and a suggested PSU of 750 W. The NVIDIA card has no recorded TDP, but its suggested PSU is 200 W. The NVIDIA card uses a single 12-pin connector versus three 8-pin connectors on the AMD card. This makes the NVIDIA card easier to integrate into systems with lower power budgets.

FAQ

Q: Which card has the higher OpenCL benchmark score?

A: The AMD Radeon Pro Duo scores 35,860 in Geekbench OpenCL, which is 42.7% higher than the NVIDIA CMP 70HX's score of 25,135.

Q: What is the average benchmark score for each card?

A: The AMD Radeon Pro Duo has an average benchmark score of 35,860 based on one recorded test. The NVIDIA CMP 70HX has an average of 30,476 based on two recorded tests.

Q: How do these cards compare in memory capacity?

A: The NVIDIA CMP 70HX has 8 GB of GDDR6X memory, while the AMD Radeon Pro Duo has 4 GB of HBM memory. The NVIDIA card also has higher bandwidth at 608.3 GB/s versus 512.0 GB/s.

Q: Which card has better FP32 compute performance?

A: The NVIDIA CMP 70HX delivers 10.71 TFLOPS of FP32 compute, which is 30.7% higher than the AMD Radeon Pro Duo's 8.192 TFLOPS.

Q: Does the NVIDIA CMP 70HX support display outputs?

A: No, the NVIDIA CMP 70HX has no display outputs. The AMD Radeon Pro Duo has 1x HDMI 1.4a and 3x DisplayPort 1.2 outputs.

Q: What are the nearest rivals for each card based on average score?

A: For the AMD card, the nearest rival is the NVIDIA Quadro GV100 at 35,520, which is 1% lower. For the NVIDIA card, the nearest rival is the NVIDIA Tesla M60 at 30,490, which is essentially tied with a 0% delta.

The Verdict

Based strictly on the recorded data, the AMD Radeon Pro Duo is the clear winner in OpenCL compute performance. Its 42.7% advantage over the CMP 70HX in the head-to-head benchmark is substantial and not close to being marginal. The AMD card also holds a higher percentile ranking at 80 versus 75, and its average benchmark score is 17.7% higher than the NVIDIA card's average.

However, the choice is not straightforward for all use cases. The NVIDIA CMP 70HX offers 8 GB of memory versus 4 GB, higher memory bandwidth, higher FP32 compute, and dedicated ray tracing and tensor cores. These features make it more suitable for workloads that require large memory footprints or leverage RT and tensor acceleration. The NVIDIA card's lower power requirements, with a 200 W suggested PSU versus 750 W for the AMD card, also make it easier to deploy in constrained systems.

The AMD card wins for OpenCL-centric workloads and texture-heavy processing. Its higher texture rate of 256.0 GTexel/s versus 167.4 GTexel/s supports this. The AMD card also has display outputs, making it usable in systems where visual output is required, whereas the NVIDIA card has none.

For a user prioritizing raw OpenCL compute and professional display functionality, the AMD Radeon Pro Duo is the data-backed choice. For a user prioritizing memory capacity, FP32 compute, or modern API features like ray tracing and DirectX 12 Ultimate, the NVIDIA CMP 70HX is the better fit despite its lower OpenCL score. The data does not support a universal recommendation; it supports a workload-dependent one.

Specification Differences

| Specification | AMD Radeon Pro Duo | NVIDIA CMP 70HX |

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

| Architecture | GCN 3.0 | Ampere |

| Process Node | 28 nm | 8 nm |

| Foundry | TSMC | Samsung |

| Transistors | 8,900 million | 17,400 million |

| Die Size | 596 mm² | 392 mm² |

| Transistor Density | 14.9M / mm² | 44.4M / mm² |

| Memory Size | 4 GB | 8 GB |

| Memory Type | HBM | GDDR6X |

| Memory Bus Width | 4096 bit | 256 bit |

| Memory Bandwidth | 512.0 GB/s | 608.3 GB/s |

| Shading Units | 4096 | 3840 |

| TMUs | 256 | 120 |

| ROPs | 64 | 64 |

| RT Cores | None | 30 |

| Tensor Cores | None | 120 |

| Pixel Rate | 64.00 GPixel/s | 89.28 GPixel/s |

| Texture Rate | 256.0 GTexel/s | 167.4 GTexel/s |

| FP32 | 8.192 TFLOPS | 10.71 TFLOPS |

| FP16 | 8.192 TFLOPS (1:1) | 10.71 TFLOPS (1:1) |

| TDP | 350 W | Not recorded |

| Power Connectors | 3x 8-pin | 1x 12-pin |

| Suggested PSU | 750 W | 200 W |

| Bus Interface | PCIe 3.0 x16 | PCIe 1.0 x4 |

| Display Outputs | 1x HDMI 1.4a, 3x DisplayPort 1.2 | No outputs |

| DirectX Support | 12 (12_0) | 12 Ultimate (12_2) |

| Vulkan Support | 1.2.170 | 1.4 |

| Length | 277 mm (10.9 inches) | 267 mm (10.5 inches) |

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

| Launch MSRP | 1,499 USD | Not recorded |