NVIDIA CMP 70HX vs NVIDIA GeForce RTX 5080 Mobile Comparison

The NVIDIA GeForce RTX 5080 Mobile and the NVIDIA CMP 70HX are both high-end GPUs that land in the same performance percentile, but they are built for entirely different worlds. The data shows a near-tie in aggregate benchmark scores, yet the GeForce RTX 5080 Mobile utterly dominates in the direct head-to-head tests available. This comparison is less about raw performance parity and more about architectural intent: one is a modern mobile powerhouse, the other is a retired mining card with no display outputs.

FAQ

Q: How do the two GPUs compare in average benchmark score?

A: The NVIDIA GeForce RTX 5080 Mobile has an average benchmark score of 38349, while the NVIDIA CMP 70HX scores 38225. This puts the RTX 5080 Mobile a mere 0.3% ahead, with both cards sitting at the 81st percentile among all GPUs.

Q: Which GPU wins in the Geekbench OpenCL test?

A: The GeForce RTX 5080 Mobile wins decisively with a score of 166986, compared to the CMP 70HX's 41446. This represents a massive 302.9% advantage for the mobile GPU.

Q: Is the CMP 70HX a viable option for gaming or desktop use?

A: No. The CMP 70HX has no display outputs, making it impossible to connect a monitor directly. It was designed for mining operations, as indicated by its "Mining GPUs" generation and its dual-slot form factor with a 1x 12-pin power connector.

Q: What is the difference in memory capacity between the two?

A: The GeForce RTX 5080 Mobile comes with 16 GB of GDDR7 memory on a 256-bit bus, delivering 896.0 GB/s of bandwidth. The CMP 70HX offers 8 GB of GDDR6X on the same 256-bit bus, but with lower bandwidth at 608.3 GB/s.

Q: How do their transistor counts and process nodes differ?

A: The RTX 5080 Mobile uses a 5 nm process from TSMC and packs 45,600 million transistors on a 378 mm² die. The CMP 70HX is built on Samsung's 8 nm node, with 17,400 million transistors on a larger 392 mm² die.

Q: Which GPU has a higher boost clock speed?

A: The CMP 70HX has a higher boost clock at 1395 MHz, compared to the RTX 5080 Mobile's 1500 MHz boost. However, the RTX 5080 Mobile's base clock is lower at 975 MHz versus 1365 MHz on the CMP 70HX.

The Verdict

The data paints a clear picture for different use cases. The NVIDIA GeForce RTX 5080 Mobile is the only choice for anyone needing a functional graphics card for a laptop, given its IGP slot width, portable device dependent display outputs, and active production status. Its overwhelming wins in compute benchmarks make it the superior performer for any workload that can utilize its architecture.

The NVIDIA CMP 70HX is an end-of-life product with no display outputs, effectively restricting it to compute-only mining or server roles. While its average benchmark score is within 0.3% of the RTX 5080 Mobile, this aggregate is based on a limited dataset. The CMP 70HX's higher boost clock of 1395 MHz and lower transistor density suggest a different design philosophy, but its performance in the tests we have is far behind. Pick the RTX 5080 Mobile for any modern application; pick the CMP 70HX only if you have a specific, display-less compute task and can source the discontinued hardware.

Head-to-Head Benchmarks

The head-to-head data is stark and one-sided. In the Geekbench OpenCL test, the RTX 5080 Mobile scores 166986, a 302.9% improvement over the CMP 70HX's 41446. This is not a marginal win; it is a generational leap in compute throughput.

The results are even more lopsided in the Geekbench Vulkan test. Here, the RTX 5080 Mobile scores 169754, while the CMP 70HX trails far behind with 35003. The deltaPct of 385% indicates the RTX 5080 Mobile is nearly four times faster in this API, which strongly suggests the newer architecture handles modern graphics workloads far more efficiently. The CMP 70HX wins zero benchmarks in this comparison.

Specification Differences

The specification sheets reveal fundamental differences in design goals. The RTX 5080 Mobile is a compact, mobile-first chip with an IGP slot width and no power connectors, drawing just 80 W TDP. The CMP 70HX is a dual-slot card with a 1x 12-pin power connector and a suggested PSU of 200 W, reinforcing its desktop mining card origins.

| Specification | NVIDIA GeForce RTX 5080 Mobile | NVIDIA CMP 70HX |

| :--- | :--- | :--- |

| Process Node | 5 nm | 8 nm |

| Foundry | TSMC | Samsung |

| Shading Units | 7680 | 3840 |

| TMUs | 240 | 120 |

| ROPs | 96 | 64 |

| RT Cores | 60 | 30 |

| Tensor Cores | 240 | 120 |

| Base Clock | 975 MHz | 1365 MHz |

| Boost Clock | 1500 MHz | 1395 MHz |

| Memory Size | 16 GB | 8 GB |

| Memory Type | GDDR7 | GDDR6X |

| Memory Bandwidth | 896.0 GB/s | 608.3 GB/s |

| TDP | 80 W | Not specified |

| Slot Width | IGP | Dual-slot |

| Power Connectors | None | 1x 12-pin |

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

| Display Outputs | Portable Device Dependent | No outputs |

| Dimensions | Not specified | 267 mm / 112 mm |

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

Architecture Differences

The architectural gap is the root cause of the performance disparity. The RTX 5080 Mobile uses the GB203 chip based on the Blackwell 2.0 architecture, built on a 5 nm TSMC process. It crams 45,600 million transistors into a 378 mm² die, achieving a transistor density of 120.6M / mm². This density enables a massive 7680 shading units, 240 TMUs, and 96 ROPs, along with 60 RT cores and 240 tensor cores.

In contrast, the CMP 70HX uses the GA104 chip based on the older Ampere architecture. It is manufactured on Samsung's 8 nm process, housing 17,400 million transistors on a similar 392 mm² die, resulting in a much lower density of 44.4M / mm². It has half the shading units (3840), TMUs (120), and ROPs (64), and a correspondingly reduced count of 30 RT cores and 120 tensor cores. The RTX 5080 Mobile's FP32 compute is 23.04 TFLOPS, more than double the CMP 70HX's 10.71 TFLOPS, and its pixel rate of 144.0 GPixel/s versus 89.28 GPixel/s shows a similar advantage in fill rate capabilities.

Where Each One Wins

The RTX 5080 Mobile wins in every measurable performance category, but its wins are concentrated in modern, compute-heavy workloads. Its dominance in both Geekbench OpenCL and Vulkan tests indicates it is the superior choice for applications that leverage general-purpose GPU compute, ray tracing, and modern graphics APIs. The 16 GB of GDDR7 memory and 896.0 GB/s of bandwidth make it suitable for large datasets and high-resolution textures, reinforcing its position as a capable mobile workstation or high-end gaming GPU.

The CMP 70HX, despite having no benchmark wins, has niche advantages based on its specifications. Its higher base clock (1365 MHz vs 975 MHz) and boost clock (1395 MHz vs 1500 MHz) suggest it may have lower latency in some single-threaded tasks, though the lack of data makes this speculative. Its PCIe 1.0 x4 interface is a significant bottleneck compared to the RTX 5080 Mobile's PCIe 5.0 x16 connection, but for a dedicated mining card that does not need to move data back to a CPU frequently, this was a cost-saving measure. Ultimately, the CMP 70HX's only practical win is for a display-less compute task where its end-of-life status and 8 GB memory are sufficient, and even then, the RTX 5080 Mobile's raw compute power would likely prove more effective if it could be mounted in the same system.