NVIDIA CMP 70HX vs NVIDIA GeForce RTX 5070 Mobile Comparison

The NVIDIA CMP 70HX and the NVIDIA GeForce RTX 5070 Mobile occupy vastly different segments of the GPU market, yet benchmark data places them in a comparable performance bracket. The CMP 70HX, an end-of-life Ampere mining part, and the RTX 5070 Mobile, an active Blackwell laptop chip, present a study in architectural divergence and generational efficiency. While the RTX 5070 Mobile dominates the available head-to-head tests, the CMP 70HX holds its ground in aggregate scoring, creating a nuanced comparison defined by workload-specific strengths.

Head-to-Head Benchmarks

The two benchmark results available for direct comparison show a decisive victory for the RTX 5070 Mobile. In the Geekbench OpenCL test, the RTX 5070 Mobile scores 122,238, dwarfing the CMP 70HX’s 25,135. This represents a 79.4% deficit for the CMP 70HX, a gap so substantial it indicates a fundamental difference in compute capability for general-purpose workloads. The Vulkan results tell a similar story, albeit with a slightly narrower margin. The RTX 5070 Mobile's 116,960 score surpasses the CMP 70HX’s 35,817 by 69.4%.

These deltas are not incremental improvements; they are generational leaps. The CMP 70HX, despite its higher raw memory bandwidth, cannot match the RTX 5070 Mobile's compute throughput in these synthetic API tests. However, the aggregate benchmark scores paint a different picture. The CMP 70HX achieves an average benchmark score of 30,476, while the RTX 5070 Mobile sits at 29,928. This places the CMP 70HX slightly ahead, with a 1.8% advantage over its nearest rival, the NVIDIA GeForce RTX 3070 Ti, which scores 29,945.

The contradiction between the head-to-head results and the aggregate scores suggests that the RTX 5070 Mobile’s performance is highly specialized. Its wins are concentrated in compute-heavy OpenCL and Vulkan tasks, while the CMP 70HX may excel in other, unlisted benchmark suites. The RTX 5070 Mobile’s PassMark results, for instance, show a G3D score of 20,355 and a GPU compute score of 8,279, indicating strong DirectX and compute performance, but these do not factor into the head-to-head comparison provided.

Architecture Differences

The architectural chasm between these two GPUs is immense. The CMP 70HX is built on the Ampere architecture, fabricated on Samsung’s 8 nm process node. It houses 17,400 million transistors on a 392 mm² die, yielding a transistor density of 44.4 million per square millimeter. In contrast, the RTX 5070 Mobile uses the Blackwell 2.0 architecture, manufactured by TSMC on a 5 nm node. Its 21,900 million transistors are packed into a much smaller 181 mm² die, achieving a density of 121.0 million per square millimeter. This 2.7x improvement in density is the primary driver of the RTX 5070 Mobile's efficiency.

The CMP 70HX features a 256-bit memory bus paired with 8 GB of GDDR6X memory, delivering a bandwidth of 608.3 GB/s. The RTX 5070 Mobile, conversely, uses a 128-bit bus with 8 GB of GDDR7 memory, resulting in 384.0 GB/s of bandwidth. While the CMP 70HX has a clear advantage in raw memory throughput, the RTX 5070 Mobile compensates with a significantly higher boost clock: 1425 MHz versus 1395 MHz. The RTX 5070 Mobile also has more shaders (4608 vs 3840), more TMUs (144 vs 120), and more RT cores (36 vs 30), though the CMP 70HX has more ROPs (64 vs 48).

The compute capabilities are equally divergent. The RTX 5070 Mobile's FP32 throughput is rated at 13.13 TFLOPS, compared to the CMP 70HX's 10.71 TFLOPS. This 22.6% advantage in raw floating-point performance aligns with its higher shader count and clock speed. The RTX 5070 Mobile also leads in texture rate (205.2 GTexel/s vs 167.4 GTexel/s), while the CMP 70HX wins in pixel rate (89.28 GPixel/s vs 68.40 GPixel/s). Power consumption is a stark differentiator: the RTX 5070 Mobile is rated at 50 W TDP, while the CMP 70HX requires a 200 W suggested PSU. The CMP 70HX is also a dual-slot card with a 1x 12-pin power connector and no display outputs, reinforcing its mining-specific design. The RTX 5070 Mobile is an IGP with no dedicated power connectors, designed for portable devices.

The Verdict

The data presents a clear choice based on use case. The RTX 5070 Mobile is the superior GPU for any general-purpose or compute-intensive workload. Its Geekbench scores are 79.4% and 69.4% higher than the CMP 70HX in OpenCL and Vulkan, respectively. This makes it the obvious pick for users running modern applications, game engines, or any software leveraging DirectX 12 Ultimate or Vulkan APIs. Its active production status and 50 W TDP also make it a viable option for portable systems, whereas the CMP 70HX is end-of-life and offers no display outputs.

The CMP 70HX, however, is not without merit. Its aggregate benchmark score of 30,476 is 1.8% higher than the RTX 3070 Ti and 0.1% higher than the AMD Radeon RX 6700, indicating strong overall performance in the specific benchmarks that contribute to its average. Its 608.3 GB/s memory bandwidth is a substantial asset for bandwidth-sensitive tasks, and its higher pixel rate suggests potential advantages in certain rasterization scenarios. For a user with a fixed PCIe 1.0 x4 slot and a 200 W PSU, the CMP 70HX might offer a viable, if niche, solution. However, its lack of display outputs and mining-focused design make it a poor choice for a conventional desktop.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The NVIDIA CMP 70HX has a higher average benchmark score of 30,476, compared to the NVIDIA GeForce RTX 5070 Mobile’s 29,928.

Q: How large is the performance gap in the Geekbench Vulkan test?

A: The RTX 5070 Mobile scores 116,960 in Geekbench Vulkan, which is 69.4% higher than the CMP 70HX’s score of 35,817.

Q: What are the memory specifications for each GPU?

A: The CMP 70HX has 8 GB of GDDR6X memory on a 256-bit bus with 608.3 GB/s bandwidth. The RTX 5070 Mobile has 8 GB of GDDR7 memory on a 128-bit bus with 384.0 GB/s bandwidth.

Q: Which GPU is more power-efficient based on the data?

A: The RTX 5070 Mobile is more power-efficient, with a 50 W TDP, whereas the CMP 70HX requires a 200 W suggested PSU.

Q: Does the CMP 70HX support display outputs?

A: No, the CMP 70HX has no display outputs, while the RTX 5070 Mobile’s outputs are described as portable device dependent.

Q: Is the RTX 5070 Mobile’s performance consistent across all benchmarks?

A: No, its head-to-head wins are substantial, but its average score is lower than the CMP 70HX, indicating variability across different test suites.

Where Each One Wins

NVIDIA GeForce RTX 5070 Mobile:

• Compute-intensive workloads: The RTX 5070 Mobile wins decisively in both Geekbench OpenCL (122,238 vs 25,135) and Geekbench Vulkan (116,960 vs 35,817), making it the clear choice for applications leveraging these APIs.
• Modern API support: With DirectX 12 Ultimate and Vulkan 1.4 support, it is better positioned for future software and game engines.
• Efficiency and portability: Its 50 W TDP and IGP form factor make it suitable for laptops and compact systems, unlike the CMP 70HX’s dual-slot, 200 W design.
• Raw compute throughput: The RTX 5070 Mobile’s FP32 performance of 13.13 TFLOPS exceeds the CMP 70HX’s 10.71 TFLOPS, indicating superior shader processing capability.

NVIDIA CMP 70HX:

• Aggregate benchmark performance: The CMP 70HX’s average score of 30,476 is higher than the RTX 5070 Mobile’s 29,928, suggesting it performs better in the broader set of benchmarks that contribute to the average.
• Memory bandwidth: With 608.3 GB/s of bandwidth versus the RTX 5070 Mobile’s 384.0 GB/s, the CMP 70HX is better suited for bandwidth-bound tasks.
• Pixel throughput: The CMP 70HX’s pixel rate of 89.28 GPixel/s is higher than the RTX 5070 Mobile’s 68.40 GPixel/s, potentially offering advantages in fill-rate-limited scenarios.
• Rasterization resources: The CMP 70HX has more ROPs (64 vs 48), which could benefit certain rendering workloads.