AMD Radeon RX 6700 XT vs NVIDIA GeForce RTX 5070 Mobile Comparison

The NVIDIA GeForce RTX 5070 Mobile and AMD Radeon RX 6700 XT represent two very different approaches to high-performance graphics, separated by four years of architectural evolution and a stark contrast in power envelopes. The data shows a fascinating split: the mobile NVIDIA part dominates in modern API workloads and raw compute in certain tests, while the older AMD desktop card holds its own in legacy DirectX and specific compute tasks. This analysis examines the head-to-head benchmark results, architectural differences, and the specific use cases where each GPU emerges as the better option.

Head-to-Head Benchmarks

The benchmark suite reveals a clear generational advantage for the NVIDIA GeForce RTX 5070 Mobile in most tests. The most dramatic difference appears in Geekbench OpenCL, where the RTX 5070 Mobile scores 122,238 against the RX 6700 XT's 44,152, a staggering 176.9% advantage. This is not a marginal win; it indicates a fundamental difference in how the two architectures handle compute-heavy OpenCL workloads. Similarly, in Geekbench Vulkan, the NVIDIA part leads with 116,960 versus 93,500, a 25.1% margin that shows better modern graphics API utilization.

The DirectX 12 test tells a similar story. The RTX 5070 Mobile scores 93 versus the RX 6700 XT's 77, a 20.8% advantage. This is particularly significant because DirectX 12 is the primary API for contemporary AAA games. The NVIDIA part also wins in PassMark DirectX 11, scoring 192 against 173 (11% ahead), and in DirectX 10, where it scores 129 versus 124 (4% ahead). In the aggregate PassMark G3D test, the RTX 5070 Mobile maintains its lead with 20,355 points against 19,786, a 2.9% margin that reflects the overall 3D rendering performance.

However, the RX 6700 XT is not without its victories. In PassMark DirectX 9, the AMD card wins decisively, scoring 242 against the NVIDIA's 214, an 11.6% advantage for the older architecture. This suggests that RDNA 2.0 retains strong performance in legacy DirectX 9 titles. The AMD card also wins in PassMark G2D (2D graphics), scoring 951 versus 896, a 5.8% lead, and in PassMark GPU Compute, where it scores 9,336 against 8,279, an 11.3% advantage. The compute win is notable because it contradicts the OpenCL result, highlighting that different compute APIs and test methodologies can yield opposite conclusions.

Overall, the RTX 5070 Mobile wins 6 of the 9 head-to-head tests, while the RX 6700 XT wins 3. The average benchmark scores reflect this: the NVIDIA part averages 29,928 across all tests, while the AMD card averages 27,425. This places the RTX 5070 Mobile in the 75th percentile of all GPUs, while the RX 6700 XT sits slightly lower at the 72nd percentile. The NVIDIA part's nearest rivals include the RTX 3070 Ti (within 0.1%) and the RX 6800 (within 0.6%), while the AMD card's nearest rival is the RTX 4070 Mobile, with which it is exactly tied at 0.0% delta.

Architecture Differences

The two GPUs could not be more different in their design philosophies. The RTX 5070 Mobile is built on NVIDIA's Blackwell 2.0 architecture using the GB206 chip, fabricated on a 5 nm process at TSMC. This process node allows for 21,900 million transistors packed into a die size of just 181 mm², resulting in a transistor density of 121.0 million per square millimeter. In contrast, the RX 6700 XT uses AMD's RDNA 2.0 architecture with the Navi 22 chip, built on a 7 nm process. It houses 17,200 million transistors across a much larger 335 mm² die, yielding a significantly lower density of 51.3 million per square millimeter.

The memory subsystems highlight another key difference. The RTX 5070 Mobile features 8 GB of GDDR7 memory on a 128-bit bus, delivering 384.0 GB/s of bandwidth. The RX 6700 XT offers 12 GB of GDDR6 memory on a wider 192-bit bus, but also achieves 384.0 GB/s of bandwidth. The equal bandwidth is notable, but the NVIDIA part uses newer memory technology to achieve it with a narrower bus, while the AMD card relies on more memory chips and a wider interface. The 12 GB capacity of the AMD card is a significant advantage for texture-heavy workloads at high resolutions.

Compute resources diverge substantially. The RTX 5070 Mobile has 4,608 shading units, 144 TMUs, and 48 ROPs, along with 36 RT cores and 144 tensor cores. The RX 6700 XT has fewer shading units at 2,560, but more TMUs (160) and ROPs (64), plus 40 RT cores and no tensor cores. Despite the higher shader count, the NVIDIA part's FP32 throughput is 13.13 TFLOPS, nearly identical to the AMD card's 13.21 TFLOPS. However, in FP16, the AMD card is far ahead with 26.43 TFLOPS (2:1 ratio) versus the NVIDIA's 13.13 TFLOPS (1:1 ratio), indicating that the RX 6700 XT has dedicated hardware for half-precision compute.

Clock speeds differ dramatically. The RX 6700 XT runs at a base clock of 2,321 MHz and boosts to 2,581 MHz, with a game clock of 2,424 MHz. The RTX 5070 Mobile, constrained by its mobile form factor, runs at a much lower base clock of 907 MHz and a boost of 1,425 MHz. This clock disparity explains why the NVIDIA part, despite having nearly twice the shaders, only matches the AMD card in raw FP32 throughput. The power envelope reinforces this: the RTX 5070 Mobile has a TDP of just 50 W and uses no power connectors (it is an integrated GPU for laptops), while the RX 6700 XT consumes 230 W and requires a 1x 6-pin + 1x 8-pin power connector, with a suggested PSU of 550 W.

The Verdict

The data presents a clear verdict for different use cases. The NVIDIA GeForce RTX 5070 Mobile is the superior choice for modern, API-heavy workloads. Its 176.9% lead in OpenCL and 25.1% lead in Vulkan demonstrate that Blackwell 2.0 is exceptionally well-optimized for contemporary compute and graphics APIs. The 20.8% advantage in DirectX 12 ensures that it will handle current and upcoming game releases with better efficiency. Its 50 W TDP makes it suitable for thin-and-light laptops, whereas the RX 6700 XT's 230 W TDP and dual-slot design require a full desktop chassis with robust cooling.

However, the AMD Radeon RX 6700 XT remains viable in specific scenarios. Its 11.3% win in PassMark GPU Compute and 11.6% win in DirectX 9 show that it retains strength in legacy applications and certain compute tasks. The 12 GB memory capacity is double the NVIDIA part's 8 GB, which could be decisive in modded games or professional workloads with large texture sets. The RX 6700 XT is also an end-of-life product with a launch MSRP of 479 USD, while the RTX 5070 Mobile is an active product released on April 14, 2025, with no MSRP listed.

For a laptop buyer seeking maximum performance per watt and future-proofing for modern titles, the RTX 5070 Mobile is the clear winner. For a desktop user running legacy software or needing more VRAM, the RX 6700 XT still has merit. The average benchmark scores—29,928 versus 27,425—favor the NVIDIA part by 9.1%, but the RX 6700 XT's nearest rival is the RTX 4070 Mobile, indicating it competes well against other mobile parts despite its desktop origins.

FAQ

Q: Which GPU has higher raw FP32 compute performance?

A: The two are nearly identical. The RTX 5070 Mobile achieves 13.13 TFLOPS, while the RX 6700 XT achieves 13.21 TFLOPS, a difference of less than 1%.

Q: How does memory bandwidth compare between the two?

A: Both GPUs deliver exactly 384.0 GB/s of memory bandwidth. The RTX 5070 Mobile uses 8 GB of GDDR7 on a 128-bit bus, while the RX 6700 XT uses 12 GB of GDDR6 on a 192-bit bus.

Q: Which GPU is better for DirectX 12 gaming?

A: The RTX 5070 Mobile wins the PassMark DirectX 12 test with a score of 93 versus 77 for the RX 6700 XT, representing a 20.8% advantage.

Q: What are the power consumption differences?

A: The RTX 5070 Mobile has a TDP of 50 W and uses no power connectors, making it suitable for laptops. The RX 6700 XT has a TDP of 230 W and requires a 1x 6-pin + 1x 8-pin power connector with a 550 W suggested PSU.

Q: Which GPU has more VRAM?

A: The RX 6700 XT has 12 GB of GDDR6 memory, while the RTX 5070 Mobile has 8 GB of GDDR7 memory. Both offer the same 384.0 GB/s bandwidth.

Q: How do their overall benchmark averages compare?

A: The RTX 5070 Mobile averages 29,928 across all benchmarks, placing it in the 75th percentile. The RX 6700 XT averages 27,425, placing it in the 72nd percentile.

Where Each One Wins

NVIDIA GeForce RTX 5070 Mobile wins in:

• Modern Compute APIs: The 176.9% OpenCL lead and 25.1% Vulkan lead make it the clear choice for applications leveraging these APIs, including scientific computing and modern game engines.
• DirectX 12 and 11: With 20.8% and 11% advantages respectively, it is better equipped for current and upcoming game titles that use these APIs.
• Overall 3D Performance: The 2.9% lead in PassMark G3D, combined with a higher average benchmark score (29,928 versus 27,425), makes it the stronger all-around performer.
• Efficiency: A 50 W TDP versus 230 W means it can deliver competitive performance in a laptop form factor, where the RX 6700 XT cannot be installed at all.
• DirectX 10: A modest 4% lead (129 versus 124) ensures compatibility with older titles that still use this API.

AMD Radeon RX 6700 XT wins in:

• Legacy DirectX: An 11.6% lead in DirectX 9 (242 versus 214) makes it the better choice for older games that rely on this API.
• GPU Compute (PassMark): An 11.3% lead in PassMark GPU Compute (9,336 versus 8,279) suggests it handles certain compute workloads more efficiently, despite losing in OpenCL.
• 2D Graphics: A 5.8% lead in PassMark G2D (951 versus 896) indicates better performance in desktop rendering and 2D applications.
• Memory Capacity: With 12 GB versus 8 GB, it can handle larger textures and more demanding VRAM usage without swapping, which is critical for high-resolution texture packs and heavy modding.
• FP16 Compute: The 26.43 TFLOPS FP16 throughput (2:1 ratio) versus the RTX 5070 Mobile's 13.13 TFLOPS (1:1 ratio) makes it far superior for half-precision workloads.