NVIDIA GeForce RTX 5080 SUPER vs NVIDIA H100 CNX Comparison

Head-to-Head Benchmarks

The database shows no direct head-to-head benchmark entries for the NVIDIA GeForce RTX 5080 SUPER and the NVIDIA H100 CNX. The RTX 5080 SUPER has a recorded 3DMark Steel Nomad DX12 score of 3075, placing it in the 19th percentile among all GPUs in the database. Its nearest rivals include the NVIDIA Quadro P1000 (3163, 2.8% higher), the Intel Arc Pro B60 (3182, 3.4% higher), the NVIDIA GeForce 820A (2983, 3.1% lower), and the NVIDIA GeForce GTX 860M (2967, 3.6% lower). This indicates the RTX 5080 SUPER sits in a tight cluster around the 3000-point mark in this specific test.

The H100 CNX has no recorded benchmark scores in the database, and its average benchmark score is listed as zero, with no nearest rivals defined. As such, the comparative data is one-sided: the RTX 5080 SUPER has measurable performance data, while the H100 CNX does not appear in any recorded benchmark result. The wins count stands at zero for each part, reflecting the absence of a direct comparison set.

What the data does show is that the RTX 5080 SUPER, despite being a recent release, lands in a modest percentile (19th) for this particular DX12 workload. Its score of 3075 is within a few percentage points of older, lower-tier parts like the GTX 860M and the 820A, which suggests the Steel Nomad test may not be representative of the card's broader capabilities. The H100 CNX, by contrast, has no comparable measurement, so any head-to-head inference must rely on architectural and specification differences rather than direct benchmark outcomes.

Where Each One Wins

The RTX 5080 SUPER is designed for client-side rendering workloads. Its recorded benchmark score, while modest in percentile terms, exists, which gives it a measurable advantage in any application that uses DX12 or similar graphics APIs. The card supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, making it suitable for modern gaming and workstation graphics tasks. Its display outputs, 1x HDMI 2.1b and 3x DisplayPort 2.1b, allow direct connection to monitors, something the H100 CNX cannot do at all, as it has no display outputs listed.

The H100 CNX, on the other hand, is a server-class compute part with no graphics outputs and no graphics API support (DirectX, OpenGL, and Vulkan are all listed as null). Its strengths lie in raw compute throughput. The FP16 performance is 215.4 TFLOPS (4:1 ratio), which is nearly four times the RTX 5080 SUPER's FP16 figure of 56.28 TFLOPS (1:1 ratio). The H100 CNX also has a much larger memory pool, 80 GB of HBM2e, compared to 24 GB of GDDR7 on the RTX 5080 SUPER. The memory bandwidth difference is substantial: 2.04 TB/s versus 1.02 TB/s. These figures indicate the H100 CNX is built for large-scale data center workloads, such as AI training or high-performance computing, where memory capacity and FP16 throughput matter more than rasterization or display output.

The RTX 5080 SUPER wins in pixel rate (293.1 GPixel/s versus 44.28 GPixel/s) and texture rate (879.3 GTexel/s versus 841.3 GTexel/s), though the texture rate gap is narrow. It also has a higher FP32 throughput at 56.28 TFLOPS versus 53.84 TFLOPS. These numbers point to the RTX 5080 SUPER being the better choice for graphics rendering and general-purpose single-precision compute, while the H100 CNX is the clear winner for FP16-heavy workloads and memory-bound tasks.

Architecture Differences

The two GPUs come from different NVIDIA architectures. The RTX 5080 SUPER uses Blackwell 2.0 on the GB203 chip, while the H100 CNX uses Hopper on the GH100 chip. Both are fabricated on a 5 nm process at TSMC, but the transistor counts differ significantly. The H100 CNX has 80,000 million transistors on an 814 mm² die, while the RTX 5080 SUPER has 45,600 million transistors on a 378 mm² die. This makes the H100 CNX a much larger and denser chip in absolute terms, though the RTX 5080 SUPER has a higher transistor density at 120.6M per mm² versus 98.3M per mm².

The H100 CNX belongs to the Server Hopper generation (Hxx), while the RTX 5080 SUPER is part of the GeForce 50-series. The H100 CNX's predecessor is Server Ada, and its successor is Server Blackwell, indicating its role in NVIDIA's data center lineup. The RTX 5080 SUPER has no listed predecessor or successor.

Core counts differ as well. The H100 CNX has 14,592 shading units, 456 TMUs, and 456 tensor cores, but no RT cores listed. The RTX 5080 SUPER has 10,752 shading units, 336 TMUs, 112 ROPs, 84 RT cores, and 336 tensor cores. The H100 CNX has more shading units and tensor cores, but the RTX 5080 SUPER has a much higher ROP count (112 versus 24), which helps explain its superior pixel rate.

Memory architecture is fundamentally different. The RTX 5080 SUPER uses 24 GB of GDDR7 on a 256-bit bus, while the H100 CNX uses 80 GB of HBM2e on a 5120-bit bus. The H100 CNX's bandwidth is double that of the RTX 5080 SUPER. Clock speeds also diverge: the RTX 5080 SUPER has a base clock of 2295 MHz and a boost of 2617 MHz, whereas the H100 CNX has a base of 690 MHz and a boost of 1845 MHz. The RTX 5080 SUPER's memory runs at 2000 MHz (32 Gbps effective), while the H100 CNX's memory runs at 1593 MHz (3.2 Gbps effective).

Power and connectivity differ too. The RTX 5080 SUPER has a TDP of 415 W and uses a 1x 16-pin connector, while the H100 CNX has a TDP of 350 W and uses an 8-pin EPS connector, with a suggested PSU of 750 W. Both are dual-slot cards, and both use PCIe 5.0 x16. The RTX 5080 SUPER is 304 mm long, 137 mm high, and 40 mm wide; the H100 CNX is 267 mm long and 111 mm high, with no width listed.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The RTX 5080 SUPER delivers 56.28 TFLOPS FP32, while the H100 CNX delivers 53.84 TFLOPS FP32. The difference is about 4.5% in favor of the RTX 5080 SUPER.

Q: How does memory capacity compare?

A: The H100 CNX has 80 GB of HBM2e, while the RTX 5080 SUPER has 24 GB of GDDR7. The H100 CNX provides more than three times the memory capacity.

Q: Which card supports display outputs?

A: Only the RTX 5080 SUPER has display outputs, with 1x HDMI 2.1b and 3x DisplayPort 2.1b. The H100 CNX has no display outputs at all.

Q: What is the memory bandwidth for each?

A: The H100 CNX has 2.04 TB/s bandwidth, while the RTX 5080 SUPER has 1.02 TB/s. The H100 CNX offers exactly double the bandwidth.

Q: Are the GPUs on the same process node?

A: Yes, both are fabricated on a 5 nm process at TSMC. However, the H100 CNX has 80,000 million transistors on an 814 mm² die, while the RTX 5080 SUPER has 45,600 million transistors on a 378 mm² die.

Q: Which GPU has a higher boost clock?

A: The RTX 5080 SUPER boosts to 2617 MHz, while the H100 CNX boosts to 1845 MHz. The RTX 5080 SUPER's boost clock is approximately 42% higher.

Specification Differences

| Specification | RTX 5080 SUPER | H100 CNX |

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

| Architecture | Blackwell 2.0 | Hopper |

| Chip | GB203 | GH100 |

| Generation | GeForce 50 | Server Hopper (Hxx) |

| Process Node | 5 nm | 5 nm |

| Transistors | 45,600 million | 80,000 million |

| Die Size | 378 mm² | 814 mm² |

| Base Clock | 2295 MHz | 690 MHz |

| Boost Clock | 2617 MHz | 1845 MHz |

| Memory Size | 24 GB GDDR7 | 80 GB HBM2e |

| Memory Bus Width | 256 bit | 5120 bit |

| Memory Bandwidth | 1.02 TB/s | 2.04 TB/s |

| Shading Units | 10752 | 14592 |

| TMUs | 336 | 456 |

| ROPs | 112 | 24 |

| RT Cores | 84 | None listed |

| Tensor Cores | 336 | 456 |

| FP32 | 56.28 TFLOPS | 53.84 TFLOPS |

| FP16 | 56.28 TFLOPS (1:1) | 215.4 TFLOPS (4:1) |

| TDP | 415 W | 350 W |

| Power Connectors | 1x 16-pin | 8-pin EPS |

| Suggested PSU | None listed | 750 W |

| Display Outputs | 1x HDMI 2.1b, 3x DisplayPort 2.1b | No outputs |

| DirectX | 12 Ultimate (12_2) | None |

| OpenGL | 4.6 | None |

| Vulkan | 1.4 | None |

| Length | 304 mm (12 inches) | 267 mm (10.5 inches) |

| Height | 137 mm (5.4 inches) | 111 mm (4.4 inches) |

| Width | 40 mm (1.6 inches) | None listed |

| Release Date | 2025-12-31 | 2023-03-20 |

| Launch MSRP | 999 USD | None listed |

The two GPUs share a process node, foundry, and PCIe interface, but diverge in nearly every other measurable specification. The H100 CNX is physically larger, uses more transistors, and has more memory and tensor cores. The RTX 5080 SUPER has higher clocks, more ROPs, and a higher pixel rate.

The Verdict

The data separates these two parts cleanly by use case. The RTX 5080 SUPER is a client graphics card with display output, modern API support, and a measured DX12 benchmark score of 3075. Its higher pixel rate and FP32 throughput make it suitable for rendering tasks that require rasterization and single-precision compute. Its 24 GB of GDDR7 memory and 1.02 TB/s bandwidth are ample for high-resolution textures and frame buffers, though the H100 CNX doubles that bandwidth.

The H100 CNX is a server compute accelerator with no graphics output and no API support. Its 80 GB of HBM2e memory, 2.04 TB/s bandwidth, and 215.4 TFLOPS FP16 performance indicate a design optimized for large-scale data center workloads, such as AI inference and training, where memory capacity and reduced-precision throughput dominate. Its FP32 figure (53.84 TFLOPS) is close to the RTX 5080 SUPER's (56.28 TFLOPS), but the H100 CNX's FP16 capability is far ahead.

The recorded benchmark data favors the RTX 5080 SUPER only because it is the sole part with a score. The H100 CNX's lack of any benchmark entry means its performance in the same test cannot be compared directly. Based on specifications alone, the H100 CNX is the stronger choice for memory-bound and FP16-heavy workloads, while the RTX 5080 SUPER is the only one of the two that can drive a display or run graphics APIs. Buyers should select based on whether they need a render-capable client GPU or a compute-focused server accelerator. The RTX 5080 SUPER has a launch MSRP of 999 USD, while the H100 CNX has no listed launch price.