AMD Radeon RX 6700M vs NVIDIA GeForce GTX 780 Ti Comparison

The AMD Radeon RX 6700M and NVIDIA GeForce GTX 780 Ti represent two very different eras of GPU design, and the benchmark data reflects that divide starkly. While the GTX 780 Ti was a flagship desktop card of its generation, the RX 6700M is a modern mobile part built on a much newer process and architecture. The data shows a decisive performance gap, with the AMD card winning all head-to-head comparisons by significant margins, though the older card retains a place in the historical record for its own era's strengths.

Head-to-Head Benchmarks

The most lopsided result comes from the Geekbench Metal test, where the RX 6700M scores 91,911 against the GTX 780 Ti's 18,144. That is a 406.6% advantage for the AMD card, a massive generational leap that highlights how far GPU compute has come. In raw compute terms, this is not a close contest; the modern RDNA 2 architecture simply overwhelms the older Kepler design in Apple's Metal API.

The Geekbench OpenCL benchmark tells a similar story, though with a slightly smaller gap. The RX 6700M posts 77,666 points, while the GTX 780 Ti manages 27,326. The 184.2% delta is still enormous, but it shows that the older card is relatively less disadvantaged in this API than in Metal. This suggests the GTX 780 Ti's compute cores, while old, still have some raw throughput that scales better in OpenCL workloads.

For Geekbench Vulkan, the RX 6700M again dominates with 90,816 points versus the GTX 780 Ti's 27,238, a 233.4% difference. Vulkan is a modern low-level API, and the data indicates the RX 6700M is far better optimized for it, likely due to its newer architecture and driver support. The GTX 780 Ti's Vulkan support is limited to version 1.2.175, while the AMD card supports Vulkan 1.4, which may partially explain the performance gap.

Across all three available head-to-head tests, the AMD Radeon RX 6700M wins 3 out of 3 benchmarks. The GTX 780 Ti has zero wins in this comparison. The average benchmark score for the RX 6700M is 25,633, compared to 24,236 for the GTX 780 Ti, a modest 5.8% overall average difference that is heavily influenced by the inclusion of other tests in the full benchmark suite. However, in the direct head-to-head tests, the margins are anything but modest.

Where Each One Wins

The RX 6700M is the clear winner in every benchmark category where both cards have data. Its performance in Geekbench Metal, OpenCL, and Vulkan is consistently several times higher than the GTX 780 Ti's. This makes it the obvious choice for any modern workload that leverages these APIs, including contemporary game engines, compute tasks, and creative applications that use GPU acceleration.

The GTX 780 Ti, however, does not win any benchmark in this dataset. Its only redeeming quality in a historical context is that it remains functional in older DirectX 11 titles, as its Passmark DirectX 11 score of 129 is from the full suite (though the RX 6700M also has a score of 129 in that same test, making them equal). The GTX 780 Ti's strengths are purely legacy: it was a powerful card for its time, but the data shows it cannot compete with the RX 6700M in any modern API benchmark.

If you are looking at these two cards for actual use today, the RX 6700M is the only sensible option based on performance. The GTX 780 Ti might still run older games that rely on early DirectX 12 features, but its support is limited to DirectX 12 (11_1), while the RX 6700M supports DirectX 12 Ultimate (12_2). For any modern software, the AMD card is the one that wins.

Architecture Differences

The architectural gap between these two GPUs is vast. The RX 6700M is built on RDNA 2.0 architecture using a 7 nm process at TSMC, while the GTX 780 Ti uses the Kepler architecture on a 28 nm process, also from TSMC. This process shrink is a major factor in the performance difference, allowing the RX 6700M to pack 17,200 million transistors into a 335 mm² die, compared to the GTX 780 Ti's 7,080 million transistors on a much larger 561 mm² die. The transistor density tells the story: the RX 6700M has 51.3M / mm², while the GTX 780 Ti has only 12.6M / mm².

The memory subsystems also differ significantly. The RX 6700M uses 10 GB of GDDR6 memory on a 160-bit bus, delivering 320.0 GB/s of bandwidth. The GTX 780 Ti has only 3 GB of GDDR5 on a wider 384-bit bus, giving it 336.6 GB/s of bandwidth. Interestingly, the older card has slightly more bandwidth, but the AMD card has over three times the memory capacity, which is crucial for modern games and high-resolution textures.

In terms of compute resources, the RX 6700M has 2304 shading units, 144 texture mapping units, and 64 ROPs, along with 36 dedicated ray tracing cores. The GTX 780 Ti has more shading units at 2880 and more TMUs at 240, but only 48 ROPs, and no ray tracing cores at all. The RX 6700M also supports hardware ray tracing, a feature that is completely absent on the GTX 780 Ti. Clock speeds are also much higher on the AMD card: the RX 6700M boosts to 2400 MHz and has a game clock of 2300 MHz, while the GTX 780 Ti's boost is only 928 MHz.

The API support further highlights the generational gap. The RX 6700M supports DirectX 12 Ultimate (12_2), Vulkan 1.4, and OpenGL 4.6. The GTX 780 Ti supports DirectX 12 (11_1), Vulkan 1.2.175, and OpenGL 4.6. The AMD card also features a modern PCIe 4.0 x16 interface, while the NVIDIA card uses PCIe 3.0 x16.

FAQ

Q: Which card is faster in Geekbench Metal?

A: The AMD Radeon RX 6700M is significantly faster, scoring 91,911 compared to the GTX 780 Ti's 18,144, a 406.6% advantage.

Q: Does the GTX 780 Ti support ray tracing?

A: No, the GTX 780 Ti has no ray tracing cores. The RX 6700M includes 36 dedicated ray tracing cores.

Q: What is the memory capacity difference?

A: The RX 6700M has 10 GB of GDDR6 memory, while the GTX 780 Ti has 3 GB of GDDR5 memory.

Q: How do their power requirements compare?

A: The RX 6700M has a TDP of 135 W and uses no power connectors (it's an IGP for mobile). The GTX 780 Ti has a TDP of 250 W and requires a 1x 6-pin + 1x 8-pin power connector setup, with a suggested PSU of 600 W.

Q: Which card has better Vulkan support?

A: The RX 6700M supports Vulkan 1.4, while the GTX 780 Ti supports Vulkan 1.2.175. Benchmark results show the RX 6700M scoring 90,816 in Geekbench Vulkan versus 27,238 for the GTX 780 Ti.

Q: Are both cards end-of-life?

A: Yes, both the AMD Radeon RX 6700M and the NVIDIA GeForce GTX 780 Ti are listed as end-of-life products.

The Verdict

The data is unambiguous: the AMD Radeon RX 6700M is the superior GPU in every measured benchmark. It wins all three head-to-head tests with margins ranging from 184.2% to 406.6%. Its average benchmark score of 25,633 is higher than the GTX 780 Ti's 24,236, and it holds a 71st percentile ranking among all GPUs, compared to the GTX 780 Ti's 70th percentile. The RX 6700M is also far more feature-rich, with ray tracing support, a newer architecture, and double the memory capacity.

If you are choosing between these two for any modern application, the RX 6700M is the only rational choice. The GTX 780 Ti's only advantage is historical; it was a high-end card in its day with a 699 USD launch MSRP, but it simply cannot keep up with a modern mid-range mobile chip. The RX 6700M offers better performance, more memory, and modern features like ray tracing and DirectX 12 Ultimate support. The GTX 780 Ti's higher TDP of 250 W versus 135 W also makes the AMD card far more power-efficient, even before considering that the RX 6700M is a mobile part.

For someone building a legacy system or collecting vintage hardware, the GTX 780 Ti has historical interest. But for anyone reading this to make a purchasing decision, the RX 6700M wins on every metric that matters for current and near-future software.

Specification Differences

| Specification | AMD Radeon RX 6700M | NVIDIA GeForce GTX 780 Ti |

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

| Architecture | RDNA 2.0 | Kepler |

| Process Node | 7 nm | 28 nm |

| Transistors | 17,200 million | 7,080 million |

| Die Size | 335 mm² | 561 mm² |

| Transistor Density | 51.3M / mm² | 12.6M / mm² |

| Base Clock | 1489 MHz | 875 MHz |

| Boost Clock | 2400 MHz | 928 MHz |

| Memory Size | 10 GB | 3 GB |

| Memory Type | GDDR6 | GDDR5 |

| Memory Bus | 160 bit | 384 bit |

| Memory Bandwidth | 320.0 GB/s | 336.6 GB/s |

| Shading Units | 2304 | 2880 |

| TMUs | 144 | 240 |

| ROPs | 64 | 48 |

| Ray Tracing Cores | 36 | None |

| Pixel Rate | 153.6 GPixel/s | 55.68 GPixel/s |

| Texture Rate | 345.6 GTexel/s | 222.7 GTexel/s |

| FP32 Performance | 11.06 TFLOPS | 5.345 TFLOPS |

| TDP | 135 W | 250 W |

| Slot Width | IGP | Dual-slot |

| Power Connectors | None | 1x 6-pin + 1x 8-pin |

| Suggested PSU | N/A | 600 W |

| Bus Interface | PCIe 4.0 x16 | PCIe 3.0 x16 |

| DirectX Support | 12 Ultimate (12_2) | 12 (11_1) |

| Vulkan Support | 1.4 | 1.2.175 |

| Release Date | 2021-05-30 | 2013-11-06 |

| Launch MSRP | N/A | 699 USD |