NVIDIA CMP 70HX vs NVIDIA GeForce RTX 3080 Ti Mobile Comparison

Head-to-Head Benchmarks

The benchmark data shows a clear and decisive winner in this comparison. The NVIDIA GeForce RTX 3080 Ti Mobile dominates the NVIDIA CMP 70HX in every recorded test, with the CMP 70HX failing to secure a single victory across the two shared benchmarks.

In Geekbench OpenCL, the RTX 3080 Ti Mobile posts a score of 117,866 against the CMP 70HX's 25,135. That translates to a 78.7% deficit for the mining card, meaning the mobile GPU is roughly 4.7 times faster in this compute-oriented workload. The margin is staggering, and it reflects the fundamental difference in compute resources between the two chips.

The Geekbench Vulkan result tells a similar story, though the gap narrows slightly. The RTX 3080 Ti Mobile scores 107,502, while the CMP 70HX manages 35,817. The delta here is 66.7%, meaning the mobile part still holds a commanding lead of approximately 3 times the performance. Vulkan tends to favor raw throughput, and the RTX 3080 Ti Mobile's larger shader array and higher clock potential shine through even in this API.

The average benchmark score data reinforces the hierarchy. The CMP 70HX averages 30,476 across its recorded tests, placing it at the 75th percentile of all GPUs in the database. The RTX 3080 Ti Mobile averages 25,740, which sits at the 71st percentile. The apparent contradiction, where the lower-scoring GPU holds a higher percentile, stems from the different test suites each card was subjected to. The CMP 70HX was tested only in Geekbench workloads, while the RTX 3080 Ti Mobile faced a broader and more demanding battery of tests, including 3DMark Steel Nomad DX12 and multiple PassMark benchmarks.

Looking at nearest rivals, the CMP 70HX trades blows with the NVIDIA Tesla M60, which scores 30,490, a 0% delta. The AMD Radeon RX 6700 sits 0.1% behind, and the RX 6800 trails by 1.3%. The RTX 3080 Ti Mobile, meanwhile, sits within 0.4% of the AMD Radeon RX 6700M, 0.1% of the Radeon Pro W5700, and 0.4% of the FirePro D700. These rival clusters show that each card lands in its respective performance tier, but the gap between the two tiers is enormous.

The RTX 3080 Ti Mobile also demonstrates versatility in its individual benchmark results. It scores 19,288 in PassMark G3D, 8,471 in PassMark GPU Compute, and 818 in PassMark G2D. Its 3DMark Steel Nomad DX12 result of 2,869 indicates modern gaming workload capability, something the CMP 70HX cannot claim due to its lack of display outputs and mining-focused design.

Architecture Differences

Both GPUs share the Ampere architecture and are built on Samsung's 8 nm process node with identical transistor density of 44.4M per square millimeter. Beyond that, the chips diverge substantially.

The CMP 70HX uses the GA104 chip, which contains 17,400 million transistors on a die size of 392 mm². The RTX 3080 Ti Mobile employs the larger GA103 chip, packing 22,000 million transistors across 496 mm². That is a 26.4% transistor advantage for the mobile part, and it shows in every compute metric.

The shading unit count tells the performance story. The RTX 3080 Ti Mobile carries 7,424 shading units, while the CMP 70HX has just 3,840. That is nearly double the compute capacity. The texture mapping units follow the same pattern: 232 for the mobile GPU versus 120 for the mining card. Render output units stand at 96 versus 64. Ray tracing cores number 58 against 30, and tensor cores total 232 versus 120.

Clock speeds paint a nuanced picture. The CMP 70HX runs a base clock of 1365 MHz and boosts to 1395 MHz. The RTX 3080 Ti Mobile starts lower at 810 MHz base but boosts to 1260 MHz. Despite the lower boost ceiling, the mobile GPU's sheer width of compute resources overwhelms the CMP 70HX's higher clocks. The FP32 throughput demonstrates this: the RTX 3080 Ti Mobile delivers 18.71 TFLOPS against 10.71 TFLOPS for the CMP 70HX. Both offer FP16 at a 1:1 ratio with their FP32 figures.

Memory configurations differ in both capacity and type. The CMP 70HX uses 8 GB of GDDR6X on a 256-bit bus, achieving 608.3 GB/s of bandwidth with 19 Gbps effective speed. The RTX 3080 Ti Mobile doubles capacity to 16 GB of GDDR6, also on a 256-bit bus, but bandwidth drops to 512.0 GB/s due to the slower 16 Gbps memory speed. The mining card's GDDR6X gives it a 18.8% bandwidth advantage, yet the mobile GPU compensates with far more compute units.

The power profiles diverge sharply. The CMP 70HX lists a suggested power supply of 200 W, while the RTX 3080 Ti Mobile carries a TDP of 115 W. The mobile part achieves vastly higher performance while sipping less power, evidence of its more modern binning and mobile-optimized design. The CMP 70HX requires a 12-pin power connector and occupies a dual-slot form factor, whereas the RTX 3080 Ti Mobile uses no external power connectors and is portable-device dependent.

Interface connectivity also separates the two. The CMP 70HX runs on PCIe 1.0 x4, an unusual choice that limits host communication. The RTX 3080 Ti Mobile uses PCIe 4.0 x16, offering 16 times the lane count and a newer revision. The CMP 70HX has no display outputs, reinforcing its mining-only purpose, while the RTX 3080 Ti Mobile's outputs are portable-device dependent.

FAQ

Q: Which GPU is faster in OpenCL compute?

A: The NVIDIA GeForce RTX 3080 Ti Mobile scores 117,866 in Geekbench OpenCL, which is 78.7% higher than the NVIDIA CMP 70HX's 25,135. The mobile GPU holds a commanding lead of roughly 4.7 times the performance.

Q: Does the CMP 70HX have any benchmark victory over the RTX 3080 Ti Mobile?

A: No. Across the two shared benchmarks in the database, Geekbench OpenCL and Geekbench Vulkan, the RTX 3080 Ti Mobile wins both. The CMP 70HX records zero wins.

Q: How do the memory configurations compare?

A: The CMP 70HX uses 8 GB of GDDR6X with 608.3 GB/s bandwidth, while the RTX 3080 Ti Mobile has 16 GB of GDDR6 with 512.0 GB/s bandwidth. Both use a 256-bit bus, but the CMP 70HX's faster memory type provides higher bandwidth.

Q: What is the transistor count difference between the two chips?

A: The RTX 3080 Ti Mobile uses the GA103 chip with 22,000 million transistors, while the CMP 70HX uses the GA104 with 17,400 million transistors. The mobile GPU has 26.4% more transistors.

Q: Which GPU has higher clock speeds?

A: The CMP 70HX has a base clock of 1365 MHz and boost of 1395 MHz, both higher than the RTX 3080 Ti Mobile's 810 MHz base and 1260 MHz boost. However, the mobile GPU's greater number of shading units more than compensates.

Q: What is the power requirement difference?

A: The RTX 3080 Ti Mobile has a TDP of 115 W and uses no external power connectors. The CMP 70HX lists a suggested power supply of 200 W and requires a single 12-pin connector.

The Verdict

The data is unambiguous. The NVIDIA GeForce RTX 3080 Ti Mobile is the superior performer by every measurable metric in the database. Its average benchmark score of 25,740, while lower than the CMP 70HX's 30,476, comes from a much broader and more demanding test suite. In the head-to-head comparisons, the mobile GPU wins by 78.7% in OpenCL and 66.7% in Vulkan.

The CMP 70HX holds advantages in specific areas: higher clock speeds, faster GDDR6X memory with greater bandwidth, and a lower power supply suggestion of 200 W versus the mobile part's 115 W TDP. But those advantages do not translate into benchmark victories. The mining card's PCIe 1.0 x4 interface and lack of display outputs make it unsuitable for general computing or gaming.

The RTX 3080 Ti Mobile, despite being a mobile part, delivers 18.71 TFLOPS of FP32 compute, 292.3 GTexel/s texture rate, and 121.0 GPixel/s pixel rate. It also supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, matching the CMP 70HX's API support. With 16 GB of memory and a 71st percentile ranking, it serves as a capable all-rounder. The CMP 70HX, at the 75th percentile, performs well in compute benchmarks but offers nothing beyond that.

For any workload that requires general-purpose graphics, gaming, or compute versatility, the RTX 3080 Ti Mobile is the clear choice. The CMP 70HX appears designed for a single purpose, and its benchmark profile reflects that narrow focus. The comparison is not close.

Specification Differences

| Specification | NVIDIA CMP 70HX | NVIDIA GeForce RTX 3080 Ti Mobile |

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

| Chip | GA104 | GA103 |

| Generation | Mining GPUs | GeForce 30 Mobile |

| Transistors | 17,400 million | 22,000 million |

| Die Size | 392 mm² | 496 mm² |

| Base Clock | 1365 MHz | 810 MHz |

| Boost Clock | 1395 MHz | 1260 MHz |

| Memory Clock | 19 Gbps effective | 16 Gbps effective |

| Memory Size | 8 GB | 16 GB |

| Memory Type | GDDR6X | GDDR6 |

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

| Shading Units | 3840 | 7424 |

| TMUs | 120 | 232 |

| ROPs | 64 | 96 |

| RT Cores | 30 | 58 |

| Tensor Cores | 120 | 232 |

| Pixel Rate | 89.28 GPixel/s | 121.0 GPixel/s |

| Texture Rate | 167.4 GTexel/s | 292.3 GTexel/s |

| FP32 | 10.71 TFLOPS | 18.71 TFLOPS |

| FP16 | 10.71 TFLOPS (1:1) | 18.71 TFLOPS (1:1) |

| TDP | null | 115 W |

| Slot Width | Dual-slot | null |

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

| Suggested PSU | 200 W | null |

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

| Display Outputs | No outputs | Portable Device Dependent |

| Dimensions | 267 mm length, 112 mm height | null |

| Release Date | null | 2022-01-24 |

| Predecessor | null | GeForce 20 Mobile |