AMD Radeon RX 6750 XT vs NVIDIA GeForce RTX 4070 Mobile Comparison

The NVIDIA GeForce RTX 4070 Mobile and AMD Radeon RX 6750 XT represent two distinct approaches to high-performance graphics, with the former being a modern, power-efficient mobile solution and the latter a larger, desktop-oriented card. Benchmark data reveals a split decision: the NVIDIA GPU dominates in compute-oriented and modern API workloads, while the AMD card shows its strength in legacy DirectX tests and traditional rasterization. This analysis breaks down the head-to-head results, architectural differences, and practical implications for each GPU.

Head-to-Head Benchmarks

The most striking result in the dataset is the GeForce RTX 4070 Mobile's overwhelming victory in the Geekbench OpenCL test. The NVIDIA card scores 109,197 points against the AMD card's 16,360 points, a differential of 567.5%. This is not a marginal win; it is a category-defining gap that suggests the RTX 4070 Mobile's compute architecture is fundamentally better suited to this type of general-purpose GPU workload. In contrast, the Geekbench Vulkan test is far closer, with the NVIDIA card winning 108,367 to 98,089, a 10.5% advantage.

The AMD Radeon RX 6750 XT claims the majority of the PassMark test wins, taking 6 out of 9 head-to-head benchmarks. Its most decisive victory comes in the DirectX 9 test, where it scores 263 against the NVIDIA card's 223, a 15.2% lead. The AMD card also wins the G2D test (972 vs 763, a 21.5% edge) and the GPU Compute test (9,550 vs 8,399, a 12.1% advantage). In the crucial PassMark G3D test, which often reflects overall gaming performance, the AMD card leads with 20,700 points versus 19,587 points for the NVIDIA card, a 5.4% margin.

However, the NVIDIA card is not without its own PassMark victories. It wins the DirectX 12 test with a score of 85 against AMD's 80, a 6.3% difference. The DirectX 11 and DirectX 10 tests are extremely close, with the AMD card winning by only 0.6% (180 vs 179) and 7.2% (125 vs 116), respectively. These results indicate that while the AMD card has a slight edge in older API performance, the NVIDIA card is more competitive in the most modern DirectX 12 workloads.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA GeForce RTX 4070 Mobile has a higher average benchmark score of 27,435, compared to the AMD Radeon RX 6750 XT's 26,011. This places the NVIDIA card in the 73rd percentile of all GPUs, while the AMD card sits in the 71st percentile.

Q: How does the RTX 4070 Mobile compare to its closest rivals?

A: The RTX 4070 Mobile's average score of 27,435 puts it nearly identical to the AMD Radeon RX 6700 XT, which scores 27,425 (a 0% delta). It is 0.5% behind the NVIDIA GeForce RTX 3090, which scores 27,565, and 1.1% ahead of the NVIDIA RTX PRO 4000 Blackwell.

Q: What is the performance difference in the Geekbench Vulkan test?

A: The NVIDIA GeForce RTX 4070 Mobile wins the Vulkan test with a score of 108,367, which is 10.5% higher than the AMD Radeon RX 6750 XT's score of 98,089.

Q: Which card wins the PassMark G3D test?

A: The AMD Radeon RX 6750 XT wins the PassMark G3D test with a score of 20,700, which is 5.4% higher than the NVIDIA GeForce RTX 4070 Mobile's score of 19,587.

Q: How does the RX 6750 XT fare against its nearest rivals?

A: The AMD card's average score of 26,011 is 0.5% higher than the AMD Radeon R9 M395X and 0.6% higher than the AMD FirePro W7100. It is also 1.1% ahead of the NVIDIA GeForce RTX 3080 Ti Mobile.

Architecture Differences

The two GPUs are built on fundamentally different architectures and process nodes. The NVIDIA GeForce RTX 4070 Mobile uses the AD106 chip based on the Ada Lovelace architecture, manufactured on a 5 nm process at TSMC. This advanced node allows for a compact die size of 188 mm² that houses 22,900 million transistors, resulting in a high transistor density of 121.8M per mm². The AMD Radeon RX 6750 XT, in contrast, uses the Navi 22 chip based on the RDNA 2.0 architecture, built on TSMC's older 7 nm process. This results in a much larger die size of 335 mm² containing 17,200 million transistors, with a lower density of 51.3M per mm².

These architectural choices lead to significant differences in core configuration. The NVIDIA card features 4,608 shading units, 144 texture mapping units, and 48 ROPs. It also includes 36 RT cores and 144 tensor cores, which are absent in the AMD card's specification. The AMD card has fewer shading units at 2,560 but more texture mapping units (160) and ROPs (64), along with 40 RT cores. The memory subsystems also differ: the NVIDIA card uses an 8 GB GDDR6 memory on a 128-bit bus, providing 256.0 GB/s of bandwidth, while the AMD card offers 12 GB of GDDR6 memory on a 192-bit bus, delivering 432.0 GB/s.

Power consumption and physical design are starkly contrasted. The RTX 4070 Mobile is a mobile-integrated GPU (IGP) with a TDP of 115 W and no power connectors or dedicated slot width. The RX 6750 XT is a dual-slot desktop card with a 250 W TDP, requiring a 1x 6-pin + 1x 8-pin power connector and a 600 W suggested PSU. The AMD card is physically larger, measuring 267 mm in length, 110 mm in height, and 40 mm in width.

The Verdict

Based strictly on the benchmark data, the choice between these two GPUs depends heavily on the target workload. The NVIDIA GeForce RTX 4070 Mobile is the clear winner in compute performance, as demonstrated by its 567.5% lead in Geekbench OpenCL and its 10.5% advantage in Vulkan. It also has a higher average benchmark score (27,435 vs 26,011) and holds the edge in DirectX 12 performance.

The AMD Radeon RX 6750 XT, however, shows its strength in legacy and traditional graphics workloads. It wins the PassMark G3D test by 5.4% and the DirectX 9 test by 15.2%, indicating better performance in older games and standard rasterization scenarios. The AMD card also excels in the G2D and GPU Compute tests, suggesting advantages in 2D applications and certain compute tasks.

The production status is also a factor: the NVIDIA card is listed as "Active," while the AMD card is "End-of-life." For users prioritizing modern API performance, compute capabilities, and a current production status, the RTX 4070 Mobile is the data-backed choice. For those focused on direct rasterization performance in existing titles, the RX 6750 XT's benchmark wins make it a compelling option, despite its older status.

Specification Differences

The two GPUs differ across nearly every core specification. The NVIDIA GeForce RTX 4070 Mobile uses a 5 nm process, while the AMD Radeon RX 6750 XT uses a 7 nm process. The NVIDIA card has a higher transistor count (22,900 million vs 17,200 million) but a smaller die size (188 mm² vs 335 mm²). Clock speeds vary significantly: the AMD card has a base clock of 2150 MHz and a boost clock of 2600 MHz, while the NVIDIA card runs at 1395 MHz base and 1695 MHz boost.

Memory configurations are distinct, with the NVIDIA card offering 8 GB on a 128-bit bus versus the AMD card's 12 GB on a 192-bit bus. The AMD card provides higher memory bandwidth (432.0 GB/s vs 256.0 GB/s) and faster effective memory speed (18 Gbps vs 16 Gbps). Compute capabilities differ, with the NVIDIA card delivering 15.62 TFLOPS FP32 and 15.62 TFLOPS FP16, while the AMD card provides 13.31 TFLOPS FP32 and 26.62 TFLOPS FP16. Power requirements are drastically different: the NVIDIA card consumes 115 W, while the AMD card consumes 250 W and requires external power connectors. The bus interface also differs, with the NVIDIA card using PCIe 4.0 x8 and the AMD card using PCIe 4.0 x16.

Where Each One Wins

The NVIDIA GeForce RTX 4070 Mobile wins in compute-heavy and modern API scenarios. Its 567.5% lead in Geekbench OpenCL makes it the obvious choice for general-purpose GPU compute tasks. The 10.5% Vulkan victory suggests better performance in Vulkan-based games and applications. The 6.3% DirectX 12 win indicates a forward-looking advantage for the latest games. The higher average benchmark score and 73rd percentile ranking also point to overall superiority in mixed workloads.

The AMD Radeon RX 6750 XT wins in legacy and traditional graphics workloads. Its 15.2% DirectX 9 lead and 5.4% PassMark G3D advantage make it the stronger performer for older games and standard 3D rendering. The 21.5% win in the G2D test indicates better 2D performance. The 12.1% GPU Compute win suggests it handles certain compute tasks more efficiently. The AMD card's 12 GB memory capacity and higher bandwidth (432.0 GB/s) provide a tangible advantage in memory-intensive scenarios, even if the benchmark suite does not isolate this directly. The RX 6750 XT also wins the DirectX 10 and DirectX 11 tests, albeit by slim margins of 7.2% and 0.6%, respectively, showing competitiveness across the DirectX spectrum.