GPU Comparison

The AMD Radeon RX 6800 XT and NVIDIA CMP 50HX occupy the same percentile ranking among all GPUs (87th), but their benchmark data reveals starkly different performance profiles. The RX 6800 XT is a fully-featured gaming card from the RDNA 2.0 generation, while the CMP 50HX is a Turing-based mining product with no display outputs. Their average benchmark scores sit close, 49,982 for AMD versus 49,071 for NVIDIA, but the nature of the workloads they handle diverges sharply, as the head-to-head results show.

Head-to-Head Benchmarks

The only two benchmarks where both cards have recorded scores are Geekbench OpenCL and Geekbench Vulkan, and the AMD Radeon RX 6800 XT wins both by a decisive margin. In Geekbench OpenCL, the RX 6800 XT scores 154,506 against the CMP 50HX’s 53,411, a delta of 189.3%. That is nearly triple the compute output in a general-purpose API that scales with raw shader throughput and memory bandwidth. The Vulkan result is even more lopsided: 152,200 versus 44,731, a 240.3% advantage for AMD. Vulkan is the API most relevant to modern gaming and compute, so this gap is not academic, it represents a fundamental difference in execution capability.

These deltas dwarf the differences seen in the cards’ nearest rival comparisons. The RX 6800 XT sits only 0.5% above the Intel Arc A550M and 1.7% below the NVIDIA RTX A1000 in average score, while the CMP 50HX is 0.8% above the RTX 4070 Ti SUPER and 1.3% below the Arc A550M. Against each other, however, the spread is enormous. The 189.3% OpenCL lead and 240.3% Vulkan lead are not incremental; they place the RX 6800 XT in a different performance class when the same workload runs on both cards.

What makes the Vulkan result particularly telling is that both cards support the same API version (1.4), so the delta cannot be attributed to software feature gaps. The RX 6800 XT’s FP32 throughput of 20.74 TFLOPS versus 11.07 TFLOPS for the CMP 50HX explains much of the compute advantage, but the memory subsystem also factors in, the AMD card has 512.0 GB/s of bandwidth on a 256-bit bus, while the NVIDIA card has 560.0 GB/s on a wider 320-bit bus. Despite the CMP 50HX’s higher raw bandwidth, the AMD card’s superior shader count and clock speeds win out in these API-level tests.

Where Each One Wins

The AMD Radeon RX 6800 XT wins every recorded head-to-head benchmark, so the practical question is where the CMP 50HX could still be relevant. The data shows zero benchmark wins for NVIDIA in direct comparison, but the CMP 50HX does have one structural advantage: its 560.0 GB/s memory bandwidth exceeds the RX 6800 XT’s 512.0 GB/s. That higher bandwidth, paired with a 250 W TDP versus 300 W for AMD, suggests the CMP 50HX could be more efficient in memory-bound mining workloads where raw compute is secondary.

The RX 6800 XT wins in every other measurable category that appears in the fact pack. It has more shading units (4,608 versus 3,584), more texture mapping units (288 versus 192), more ROPs (128 versus 80), and more RT cores (72 versus 56). Its pixel rate of 288.0 GPixel/s is more than double the CMP 50HX’s 123.6 GPixel/s, and its texture rate of 648.0 GTexel/s is more than double the NVIDIA card’s 296.6 GTexel/s. For any workload that stresses pixel fill or texture sampling, which includes most conventional gaming and rendering tasks, the RX 6800 XT is the clear choice.

The CMP 50HX does have tensor cores (448 of them), which the RX 6800 XT lacks entirely. That is a genuine differentiator for AI inference workloads that leverage Tensor Core acceleration, though no benchmark in the fact pack directly measures tensor performance. The CMP 50HX also has no display outputs, meaning it cannot drive a monitor, while the RX 6800 XT offers 1x HDMI 2.1, 2x DisplayPort 1.4a, and 1x USB Type-C. If a user needs a card for anything other than headless compute, the CMP 50HX is disqualified by its lack of outputs.

Architecture Differences

The RX 6800 XT is built on TSMC’s 7 nm process with a die size of 520 mm² and 26,800 million transistors, yielding a transistor density of 51.5 million per mm². The CMP 50HX uses TSMC’s 12 nm node with a larger 754 mm² die but fewer transistors at 18,600 million, resulting in a much lower density of 24.7 million per mm². This is a generational gap, RDNA 2.0 on 7 nm versus Turing on 12 nm, and it shows up in clock speeds. The RX 6800 XT boosts to 2250 MHz with a base of 1825 MHz and a game clock of 2015 MHz, while the CMP 50HX runs at a 1350 MHz base and 1545 MHz boost. Higher clocks on a denser process explain why the AMD card achieves 20.74 TFLOPS FP32 despite having fewer transistors per area.

Memory configurations differ substantially. The RX 6800 XT has 16 GB of GDDR6 on a 256-bit bus running at 16 Gbps effective, producing 512.0 GB/s. The CMP 50HX has 10 GB of GDDR6 on a 320-bit bus at 14 Gbps effective, producing 560.0 GB/s. The NVIDIA card has more bandwidth but less capacity and slower effective memory speed. The bus interface also differs: the RX 6800 XT uses PCIe 4.0 x16, while the CMP 50HX uses PCIe 1.0 x4, a severely restricted interface that would bottleneck any data transfer to or from the host system.

Feature sets diverge on display capabilities and compute accelerators. The RX 6800 XT has 72 RT cores for ray tracing and no tensor cores; the CMP 50HX has 56 RT cores and 448 tensor cores. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API-level compatibility is identical. The CMP 50HX’s lack of display outputs is a hard architectural choice for mining, while the RX 6800 XT’s full display suite makes it a complete consumer product. Physical dimensions are close, both are 267 mm long, but the CMP 50HX is slightly narrower (116 mm height and 35 mm width versus 120 mm and 50 mm for AMD).

The Verdict

The data is unambiguous: the AMD Radeon RX 6800 XT outperforms the NVIDIA CMP 50HX in every benchmark where both have scores. The 189.3% OpenCL lead and 240.3% Vulkan lead are not close calls. For anyone building a system that must render graphics, drive displays, or run general-purpose compute, the RX 6800 XT is the only viable option, the CMP 50HX cannot output video at all. The AMD card’s 16 GB memory, 72 RT cores, and PCIe 4.0 x16 interface make it a modern, flexible GPU, while the CMP 50HX’s PCIe 1.0 x4 interface and 10 GB capacity are limitations that would frustrate any non-mining use case.

The CMP 50HX has two arguments in its favor from the fact pack: higher memory bandwidth (560.0 GB/s versus 512.0 GB/s) and lower power draw (250 W versus 300 W). Those are real advantages for sustained, memory-heavy compute tasks where the card’s lack of display outputs is irrelevant. Its 448 tensor cores also give it an edge in AI workloads that AMD cannot match. But the RX 6800 XT’s 20.74 TFLOPS FP32 versus 11.07 TFLOPS is a 87.4% raw compute advantage, and its 288.0 GPixel/s pixel rate versus 123.6 GPixel/s is a 133% fill-rate advantage. No benchmark in the pack suggests the CMP 50HX can close that gap in any realistic workload.

Choose the RX 6800 XT if you need a card that can game, render, or compute at high performance with full modern features. Choose the CMP 50HX only if your workload is exclusively headless, memory-bandwidth-bound, and can leverage tensor cores, and even then, the PCIe 1.0 x4 interface will limit data throughput to the host. The CMP 50HX is a niche product for a narrow use case; the RX 6800 XT is a general-purpose GPU that happens to also beat it in compute.

FAQ

Q: Which card has a higher average benchmark score?

A: The AMD Radeon RX 6800 XT averages 49,982 across all recorded benchmarks, while the NVIDIA CMP 50HX averages 49,071. That is a 1.9% difference in AMD’s favor according to its rival listing, and 1.8% in AMD’s favor from the CMP 50HX’s perspective.

Q: How much faster is the RX 6800 XT in Vulkan?

A: The RX 6800 XT scores 152,200 in Geekbench Vulkan versus 44,731 for the CMP 50HX, a 240.3% lead. This is the largest head-to-head gap between the two cards.

Q: Does the CMP 50HX have any advantage in memory bandwidth?

A: Yes. The CMP 50HX provides 560.0 GB/s on a 320-bit bus, while the RX 6800 XT provides 512.0 GB/s on a 256-bit bus. The NVIDIA card also draws less power at 250 W versus 300 W.

Q: Can the CMP 50HX be used to display video?

A: No. The CMP 50HX has no display outputs, while the RX 6800 XT has 1x HDMI 2.1, 2x DisplayPort 1.4a, and 1x USB Type-C. The CMP 50HX is a headless mining card.

Q: Which card has more shading units?

A: The RX 6800 XT has 4,608 shading units, compared to 3,584 on the CMP 50HX. The AMD card also has more TMUs (288 versus 192), ROPs (128 versus 80), and RT cores (72 versus 56).

Q: Do both cards support the same APIs?

A: Yes. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. However, the CMP 50HX has 448 tensor cores while the RX 6800 XT has none.

Specification Differences

| Specification | AMD Radeon RX 6800 XT | NVIDIA CMP 50HX |

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

| Architecture | RDNA 2.0 | Turing |

| Process Node | 7 nm | 12 nm |

| Transistors | 26,800 million | 18,600 million |

| Die Size | 520 mm² | 754 mm² |

| Base Clock | 1825 MHz | 1350 MHz |

| Boost Clock | 2250 MHz | 1545 MHz |

| Memory | 16 GB GDDR6 | 10 GB GDDR6 |

| Memory Bus | 256 bit | 320 bit |

| Memory Bandwidth | 512.0 GB/s | 560.0 GB/s |

| Shading Units | 4608 | 3584 |

| TMUs | 288 | 192 |

| ROPs | 128 | 80 |

| RT Cores | 72 | 56 |

| Tensor Cores | None | 448 |

| FP32 Performance | 20.74 TFLOPS | 11.07 TFLOPS |

| TDP | 300 W | 250 W |

| Bus Interface | PCIe 4.0 x16 | PCIe 1.0 x4 |

| Display Outputs | 1x HDMI 2.1, 2x DisplayPort 1.4a, 1x USB Type-C | No outputs |

| Width | 50 mm | 35 mm |

| Release Date | 2020-10-27 | 2021-06-23 |

| Launch MSRP | 649 USD | None |