AMD Radeon RX 6450M vs NVIDIA GeForce RTX 5070 Mobile Comparison

AMD Radeon RX 6450M and NVIDIA GeForce RTX 5070 Mobile occupy different tiers of the mobile graphics landscape, and the recorded data confirms a wide performance gulf between them. The RX 6450M is a 6 nm RDNA 2.0 part with 768 shading units and 4 GB of GDDR6, while the RTX 5070 Mobile is a 5 nm Blackwell 2.0 chip with 4,608 shading units and 8 GB of GDDR7. The benchmark database lists no head-to-head tests between the two, so the analysis relies on the available benchmark scores for the NVIDIA part and the architectural specifications for both. The RTX 5070 Mobile holds a 75th percentile ranking among all GPUs, while the RX 6450M sits at the 50th percentile. The data shows a fundamental separation in compute capacity, memory bandwidth, and feature set, with the NVIDIA part dominating across every measurable dimension.

Where Each One Wins

The RTX 5070 Mobile wins on every benchmark category in the database, with no recorded wins for the RX 6450M. The NVIDIA part delivers an average benchmark score of 29,928, while the RX 6450M has an average benchmark score of 0 in the database, indicating no recorded benchmarks. The RTX 5070 Mobile shows its strongest results in Passmark G3D with a score of 20,355 and Geekbench OpenCL with a score of 122,238. It also records 116,960 in Geekbench Vulkan, 8,279 in Passmark GPU Compute, and 896 in Passmark G2D. These results position the RTX 5070 Mobile within 0.1% of the RTX 3070 Ti, 0.5% ahead of the RTX 2080 Ti, 0.6% behind the RX 6800, and 1.7% behind the RX 6700. The RX 6450M has no benchmark entries in the database, so its wins cannot be quantified from recorded measurements. The architectural data suggests it would serve only in lighter workloads given its 3.779 TFLOPS FP32 throughput versus 13.13 TFLOPS for the NVIDIA part, but no direct benchmark confirms this. The RTX 5070 Mobile also benefits from 144 tensor cores, which the RX 6450M lacks entirely, making it the only option for accelerated AI workloads in this comparison.

Architecture Differences

The two GPUs diverge sharply at the silicon level. AMD uses the Navi 24 chip built on a 6 nm TSMC process with 5,400 million transistors on a 107 mm² die, resulting in a transistor density of 50.5 million per mm². NVIDIA uses the GB206 chip on a 5 nm TSMC process with 21,900 million transistors on a 181 mm² die, giving a density of 121.0 million per mm². The RTX 5070 Mobile packs over four times the transistor count and more than double the die area. The RDNA 2.0 architecture in the RX 6450M uses 768 shading units, 48 texture mapping units, and 32 raster operation pipelines, while Blackwell 2.0 in the RTX 5070 Mobile uses 4,608 shading units, 144 TMUs, and 48 ROPs. Ray tracing hardware differs as well: the AMD part has 12 ray accelerators, while the NVIDIA part has 36 RT cores. Tensor cores appear only on the NVIDIA side with 144 units. Memory configurations separate the two further. The RX 6450M uses 4 GB of GDDR6 on a 64 bit bus with 128.0 GB/s bandwidth, while the RTX 5070 Mobile uses 8 GB of GDDR7 on a 128 bit bus with 384.0 GB/s bandwidth. The NVIDIA part triples memory bandwidth and doubles capacity. Clock behavior also differs: the RX 6450M boosts to 2460 MHz with a game clock of 2220 MHz, while the RTX 5070 Mobile boosts to only 1425 MHz. Despite the lower clock, the NVIDIA part achieves far higher throughput because of its massive shading unit count. The RX 6450M offers FP16 performance of 7.557 TFLOPS via a 2:1 ratio, while the RTX 5070 Mobile delivers 13.13 TFLOPS FP16 at a 1:1 ratio. The bus interface differs too, with the RX 6450M using PCIe 4.0 x4 and the RTX 5070 Mobile using PCIe 5.0 x16. Both parts support DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and both are integrated-class IGP designs with no power connectors and a 50 W TDP.

The Verdict

The data indicates a clear hierarchy. The RTX 5070 Mobile is the superior part by every recorded metric, with an average benchmark score of 29,928 and a 75th percentile ranking. The RX 6450M has no recorded benchmarks and a 50th percentile ranking, placing it in the middle of the database distribution. The RTX 5070 Mobile matches the performance class of desktop GPUs like the RTX 3070 Ti, RTX 2080 Ti, RX 6800, and RX 6700, coming within 1.7% of the RX 6700 and within 0.6% of the RX 6800. The RX 6450M cannot approach these figures based on its specification sheet. The NVIDIA part delivers 13.13 TFLOPS FP32, 384.0 GB/s memory bandwidth, 8 GB of GDDR7, and 144 tensor cores, all within the same 50 W TDP envelope as the AMD part. The RX 6450M offers 3.779 TFLOPS FP32, 128.0 GB/s bandwidth, 4 GB of GDDR6, and no tensor cores. For workloads that require ray tracing, AI acceleration, or high memory bandwidth, the RTX 5070 Mobile is the only viable choice in this pairing. The RX 6450M might handle basic graphics tasks, but the database provides no measurements to support a performance claim. The verdict from the data is unambiguous: the RTX 5070 Mobile dominates, and the RX 6450M trails in every comparable specification.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The RTX 5070 Mobile has an average benchmark score of 29,928, while the RX 6450M has an average benchmark score of 0 in the database.

Q: How much memory bandwidth does each GPU provide?

A: The RX 6450M provides 128.0 GB/s bandwidth from 4 GB of GDDR6 on a 64 bit bus, while the RTX 5070 Mobile provides 384.0 GB/s bandwidth from 8 GB of GDDR7 on a 128 bit bus.

Q: What are the FP32 compute figures for both parts?

A: The RX 6450M delivers 3.779 TFLOPS FP32, while the RTX 5070 Mobile delivers 13.13 TFLOPS FP32.

Q: Do both GPUs support ray tracing?

A: Yes, both support DirectX 12 Ultimate, but the RX 6450M has 12 ray accelerators while the RTX 5070 Mobile has 36 RT cores. Only the NVIDIA part includes 144 tensor cores.

Q: What is the TDP for each GPU?

A: Both the RX 6450M and the RTX 5070 Mobile have a TDP of 50 W, and both are IGP designs with no power connectors.

Q: How does the RTX 5070 Mobile compare to its nearest rivals?

A: The RTX 5070 Mobile is 0.1% behind the RTX 3070 Ti, 0.5% ahead of the RTX 2080 Ti, 0.6% behind the RX 6800, and 1.7% behind the RX 6700.

Head-to-Head Benchmarks

No head-to-head benchmark results exist in the database for the RX 6450M versus the RTX 5070 Mobile. The RTX 5070 Mobile has nine recorded benchmark scores, while the RX 6450M has none. The NVIDIA part scores 122,238 in Geekbench OpenCL and 116,960 in Geekbench Vulkan, showing strong compute performance across both major API families. In Passmark tests, it scores 20,355 in G3D, 8,279 in GPU Compute, 896 in G2D, 214 in DirectX 9, 192 in DirectX 11, 129 in DirectX 10, and 93 in DirectX 12. The spread of scores indicates that the RTX 5070 Mobile handles legacy DirectX 9 workloads better than newer DirectX 12 workloads in the Passmark suite, but the absolute numbers remain far above anything the RX 6450M could plausibly deliver given its specifications. The RX 6450M has no recorded scores to compare directly. The closest contextual comparison comes from the RTX 5070 Mobile's nearest rivals, which bracket its average score of 29,928. The RTX 3070 Ti scores 29,945, the RTX 2080 Ti scores 29,783, the RX 6800 scores 30,095, and the RX 6700 scores 30,433. The RTX 5070 Mobile sits within 1.7% of all four, indicating it performs at the level of high-end desktop GPUs from previous generations. The RX 6450M has no such rivals listed, meaning the database contains no comparable performance anchors for it. The data shows that the RTX 5070 Mobile's 13.13 TFLOPS FP32 and 205.2 GTexel/s texture rate would outpace the RX 6450M's 3.779 TFLOPS and 118.1 GTexel/s in any direct compute or graphics workload, but the absence of head-to-head tests leaves the exact margin unmeasured.

Specification Differences

The two GPUs differ in nearly every specification field. The process node changes from 6 nm for AMD to 5 nm for NVIDIA, with the foundry being TSMC in both cases. Transistor count jumps from 5,400 million to 21,900 million, and die size grows from 107 mm² to 181 mm². Transistor density rises from 50.5 million per mm² to 121.0 million per mm². The RX 6450M uses the Navi 24 chip and RDNA 2.0 architecture, while the RTX 5070 Mobile uses the GB206 chip and Blackwell 2.0 architecture. The RX 6450M belongs to the Radeon RX 6000 series and Navi Mobile generation, while the RTX 5070 Mobile belongs to the GeForce 50-series and GeForce 50 Mobile generation. The RX 6450M has a base clock of 2000 MHz, a boost clock of 2460 MHz, and a game clock of 2220 MHz. The RTX 5070 Mobile has a base clock of 907 MHz and a boost clock of 1425 MHz, with no game clock listed. Memory clock differs: the RX 6450M runs at 2000 MHz with 16 Gbps effective, while the RTX 5070 Mobile runs at 1500 MHz with 24 Gbps effective. Shading units number 768 for AMD versus 4,608 for NVIDIA. TMUs count 48 versus 144, and ROPs count 32 versus 48. Ray tracing hardware shows 12 RT cores versus 36 RT cores. Tensor cores exist only on the NVIDIA part with 144 units. Pixel rate is 78.72 GPixel/s for the RX 6450M versus 68.40 GPixel/s for the RTX 5070 Mobile, the only metric where the AMD part leads. Texture rate is 118.1 GTexel/s versus 205.2 GTexel/s. FP32 performance is 3.779 TFLOPS versus 13.13 TFLOPS. FP16 performance is 7.557 TFLOPS at a 2:1 ratio versus 13.13 TFLOPS at a 1:1 ratio. Both have a TDP of 50 W, are IGP slot designs, use no power connectors, and have portable device dependent display outputs. The bus interface changes from PCIe 4.0 x4 to PCIe 5.0 x16. The RX 6450M released on January 3, 2023, while the RTX 5070 Mobile released on April 14, 2025. The RX 6450M's predecessor is Polaris Mobile, while the RTX 5070 Mobile's predecessor is GeForce 40 Mobile. Both are marked as Active in production status. The API support is identical: DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Neither part has a launch MSRP listed in the database.