AMD Radeon RX 6700 vs NVIDIA CMP 70HX Comparison

The NVIDIA CMP 70HX and AMD Radeon RX 6700 are both end-of-life graphics cards that land in the same performance tier, with average benchmark scores of 30476 and 30433 respectively. That puts the NVIDIA part a mere 0.1% ahead of the AMD card in aggregate, a margin that is effectively a tie. However, looking at the individual benchmark results reveals a very different story: the RX 6700 utterly dominates in every test where both cards have data, while the CMP 70HX has no benchmark wins at all. This comparison is less about which card is faster and more about how a mining-focused product with stripped-down features compares to a conventional Radeon GPU.

Head-to-Head Benchmarks

The data available for direct comparison is limited to two compute-oriented tests, and the results are lopsided. In Geekbench OpenCL, the AMD Radeon RX 6700 scores 97841, while the NVIDIA CMP 70HX scores 25135. That is a delta of -74.3% from the AMD card's perspective, meaning the Radeon is roughly 3.9 times faster in this workload. The gap is similarly stark in Geekbench Vulkan: the RX 6700 posts 83974 against the CMP 70HX's 35817, a 57.3% advantage for AMD. These are not close contests; the Radeon wins both head-to-head tests by margins that suggest the NVIDIA part is not even competing in the same league for compute performance.

The aggregate scores obscure this reality. The CMP 70HX's average of 30476 is built from just two Geekbench results, while the RX 6700's 30433 average is derived from eleven different benchmarks, including Passmark tests for DirectX 9, 10, 11, 12, and GPU compute. The AMD card's average is dragged down by its weak Passmark DirectX 10 score of 115 and DirectX 12 score of 71, but its Geekbench OpenCL and Vulkan numbers are so high that they still bring the average within 0.1% of the NVIDIA card. The takeaway is clear: if you rely solely on the aggregate score, you would think these are equivalent products. The head-to-head data says otherwise, showing a one-sided sweep in the tests that matter most for general-purpose and GPU compute workloads.

Where Each One Wins

The AMD Radeon RX 6700 wins in every measurable category where both cards have been tested. It has two head-to-head wins in Geekbench OpenCL and Vulkan, and its broader benchmark suite shows strengths across the board. Its Passmark G3D score of 18931 indicates solid rasterization performance, while its Passmark GPU Compute score of 8240 confirms strong compute throughput. The RX 6700 also posts a Geekbench Metal score of 122223, which is a significant figure for any cross-platform workload, though the CMP 70HX has no comparable Metal result.

The NVIDIA CMP 70HX, by contrast, has zero wins in the head-to-head data. Its only benchmark scores are the two Geekbench tests, and it loses both badly. Where does it win? It does not, at least not according to the FACT PACK. The card's nearest rivals include the NVIDIA Tesla M60 (average score 30490) and the AMD Radeon RX 6800 (average score 30095), both of which are within 1.3% of its average, but the CMP 70HX does not outperform either in any listed test. The card appears designed for a specific niche—its PCIe 1.0 x4 interface and lack of display outputs point to mining—but in benchmark terms, it simply has no victories to claim. The only scenario where it "wins" is the aggregate score, and even that is a razor-thin 0.1% margin that disappears under scrutiny.

The Verdict

The data points to one clear conclusion: pick the AMD Radeon RX 6700 unless you have a specific reason to avoid it. In the two tests where they are directly compared, the RX 6700 is 74.3% faster in OpenCL and 57.3% faster in Vulkan. That is not a marginal advantage; it is a generational gap in compute capability. The RX 6700 also offers a far richer benchmark profile, with eleven scores covering everything from DirectX 9 to Metal, while the CMP 70HX only has two Geekbench results. If you need a card for any workload that involves OpenCL or Vulkan—which includes most modern games, rendering, and compute tasks—the AMD card is the only rational choice.

The NVIDIA CMP 70HX is not without a purpose, but that purpose is not general computing. Its lack of display outputs, PCIe 1.0 x4 interface, and 12-pin power connector scream mining card, and its benchmark scores reflect a narrow focus. The 0.1% aggregate edge over the RX 6700 is meaningless when the individual tests show a 57-74% deficit. Even against its own nearest rivals, the CMP 70HX sits at the same level as the Tesla M60 (0% delta) and is only 1.8% above the RTX 3070 Ti, which is a far more capable consumer card. For any builder considering these two, the verdict is unambiguous: the RX 6700 wins on every meaningful metric. The CMP 70HX should only be considered if you have a workload that specifically requires its unique configuration, and even then, the lack of display outputs makes it unusable as a standard GPU.

FAQ

Q: Which card has the higher average benchmark score?

A: The NVIDIA CMP 70HX has an average benchmark score of 30476, while the AMD Radeon RX 6700 scores 30433. The NVIDIA card is 0.1% higher, which is effectively a statistical tie.

Q: How much faster is the AMD Radeon RX 6700 in Geekbench OpenCL?

A: The RX 6700 scores 97841 in Geekbench OpenCL, while the CMP 70HX scores 25135. This represents a 74.3% advantage for the AMD card.

Q: Does the NVIDIA CMP 70HX have any display outputs?

A: No. The CMP 70HX has no display outputs, making it unsuitable for use as a standard graphics card. The RX 6700, by contrast, has 1x HDMI 2.1 and 3x DisplayPort 1.4a outputs.

Q: What is the difference in memory bandwidth between the two cards?

A: The CMP 70HX has 608.3 GB/s of bandwidth from its 8 GB GDDR6X memory on a 256-bit bus. The RX 6700 has 320.0 GB/s from 10 GB GDDR6 on a 160-bit bus. The NVIDIA card has nearly double the bandwidth.

Q: Which card has more shading units?

A: The NVIDIA CMP 70HX has 3840 shading units, compared to 2304 on the AMD Radeon RX 6700. Despite having more shading units, the CMP 70HX is significantly slower in compute benchmarks.

Q: What is the bus interface difference?

A: The CMP 70HX uses PCIe 1.0 x4, which is a very old and slow interface. The RX 6700 uses PCIe 4.0 x16, which offers substantially higher bandwidth for data transfer between the GPU and the rest of the system.

Architecture Differences

The two cards come from completely different architectural families. The NVIDIA CMP 70HX uses the GA104 chip built on the Ampere architecture, fabricated on Samsung's 8 nm process. The die measures 392 mm² and contains 17,400 million transistors, giving a transistor density of 44.4M per mm². The AMD Radeon RX 6700 uses the Navi 22 chip on the RDNA 2.0 architecture, built on TSMC's 7 nm process. Its die is smaller at 335 mm² but packs 17,200 million transistors, resulting in a higher density of 51.3M per mm². The process node difference is significant: AMD uses a more advanced node that allows for higher clock speeds and better efficiency.

The compute configurations differ substantially. The CMP 70HX has 3840 shading units, 120 TMUs, and 64 ROPs, along with 30 RT cores and 120 tensor cores. The RX 6700 has fewer shading units at 2304, but more TMUs at 144 and the same 64 ROPs. It also has 36 RT cores but no tensor cores, as AMD relies on different acceleration methods. Clock speeds tell the performance story: the CMP 70HX has a base of 1365 MHz and a boost of 1395 MHz, while the RX 6700 runs at 1941 MHz base and 2450 MHz boost, with a game clock of 2174 MHz. The AMD card's much higher clocks help explain why it beats the NVIDIA card in compute despite having fewer shading units.

Memory architecture is another major divergence. The CMP 70HX uses 8 GB of GDDR6X on a 256-bit bus, delivering 608.3 GB/s of bandwidth. The RX 6700 uses 10 GB of GDDR6 on a 160-bit bus, delivering 320.0 GB/s. The NVIDIA card has higher bandwidth but less capacity, and the AMD card has more capacity but lower bandwidth. In terms of pixel and texture rates, the RX 6700 leads with 156.8 GPixel/s and 352.8 GTexel/s, while the CMP 70HX posts 89.28 GPixel/s and 167.4 GTexel/s. FP32 performance is close: the CMP 70HX delivers 10.71 TFLOPS, while the RX 6700 delivers 11.29 TFLOPS. The AMD card also has a 2:1 FP16 ratio with 22.58 TFLOPS, whereas the NVIDIA card has a 1:1 ratio at 10.71 TFLOPS.

Specification Differences

The most obvious difference is the bus interface. The NVIDIA CMP 70HX uses PCIe 1.0 x4, which is a severely limited interface, while the AMD Radeon RX 6700 uses PCIe 4.0 x16. This alone makes the CMP 70HX unsuitable for any modern system, as it would bottleneck data transfer severely. The CMP 70HX also has no display outputs, while the RX 6700 has 1x HDMI 2.1 and 3x DisplayPort 1.4a. Power requirements differ: the CMP 70HX has a suggested PSU of 200 W and uses a 1x 12-pin connector, while the RX 6700 has a 175 W TDP, a suggested PSU of 450 W, and uses a 1x 8-pin connector. The AMD card is more power-efficient in terms of performance per watt, given its higher scores and similar power draw.

Memory specifications differ in both size and type. The CMP 70HX has 8 GB of GDDR6X with a 256-bit bus and 608.3 GB/s bandwidth. The RX 6700 has 10 GB of GDDR6 with a 160-bit bus and 320.0 GB/s bandwidth. The clock speeds are also distinct: the CMP 70HX has a memory clock of 1188 MHz (19 Gbps effective), while the RX 6700 has a memory clock of 2000 MHz (16 Gbps effective). The AMD card has a higher base and boost clock by a wide margin—1941/2450 MHz versus 1365/1395 MHz. The RX 6700 also has a game clock of 2174 MHz, which the NVIDIA card lacks entirely. The RX 6700 is a dual-slot card measuring 267 mm in length, 110 mm in height, and 40 mm in width. The CMP 70HX is also dual-slot but slightly taller at 112 mm, with the same 267 mm length and no listed width. The RX 6700 has a release date of 2021-06-08, while the CMP 70HX has no release date listed.