AMD Radeon 8065S vs NVIDIA RTX 4000 Mobile Ada Generation Comparison

FAQ

Q: What are the core architectural differences between the AMD Radeon 8065S and the NVIDIA RTX 4000 Mobile Ada Generation?

A: The AMD Radeon 8065S uses the RDNA 3.5 architecture on a 4 nm TSMC process with the Gorgon Halo chip, while the NVIDIA RTX 4000 Mobile Ada Generation uses Ada Lovelace on a 5 nm TSMC process with the AD104 chip. The AMD part has 2560 shading units, 160 TMUs, 64 ROPs, and 40 RT cores; the NVIDIA part has 7424 shading units, 232 TMUs, 80 ROPs, and 58 RT cores.

Q: How do their clock speeds compare?

A: The AMD Radeon 8065S has a base clock of 1295 MHz and a boost clock of 3000 MHz. The NVIDIA RTX 4000 Mobile Ada Generation has a base clock of 1290 MHz and a boost clock of 1665 MHz. The AMD part boosts to nearly double the NVIDIA part's boost frequency.

Q: What memory configurations do the two GPUs use?

A: The AMD Radeon 8065S uses system-shared memory with system-dependent bandwidth and no dedicated VRAM. The NVIDIA RTX 4000 Mobile Ada Generation has 12 GB of GDDR6 memory on a 192-bit bus with 432.0 GB/s bandwidth and an effective memory clock of 18 Gbps.

Q: Which GPU has higher theoretical compute throughput?

A: The NVIDIA RTX 4000 Mobile Ada Generation delivers 24.72 TFLOPS FP32 and FP16 (1:1), while the AMD Radeon 8065S delivers 15.36 TFLOPS FP32 and FP16 (1:1). The NVIDIA part is approximately 61% ahead in raw FP32 throughput.

Q: What are the thermal and power specifications?

A: The AMD Radeon 8065S has a TDP of 55 W, while the NVIDIA RTX 4000 Mobile Ada Generation has a TDP of 110 W. Both are integrated graphics processors (IGP) with no power connectors.

Q: What is the bus interface and API support for each?

A: The AMD Radeon 8065S uses PCIe 5.0 x16, while the NVIDIA RTX 4000 Mobile Ada Generation uses PCIe 4.0 x16. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Architecture Differences

The AMD Radeon 8065S is built on the RDNA 3.5 architecture, manufactured on a 4 nm process at TSMC with a die size of 308 mm². It belongs to the Navi Mobile (RX 8000M) generation and uses the Gorgon Halo chip. The NVIDIA RTX 4000 Mobile Ada Generation is built on Ada Lovelace, manufactured on a 5 nm process at TSMC with a die size of 294 mm² and 35,800 million transistors, giving a transistor density of 121.8M per mm². It uses the AD104 chip and belongs to the Ada-MW generation.

The AMD part integrates 2560 shading units, 160 TMUs, 64 ROPs, and 40 RT cores. The NVIDIA part integrates 7424 shading units, 232 TMUs, 80 ROPs, 58 RT cores, and 232 tensor cores. The NVIDIA GPU has nearly triple the shading units and over triple the tensor cores, which supports its higher FP32 throughput of 24.72 TFLOPS versus 15.36 TFLOPS for the AMD part.

Memory architecture differs fundamentally. The AMD Radeon 8065S relies entirely on system-shared memory with system-dependent bandwidth, meaning performance scales with the host platform's memory subsystem. The NVIDIA RTX 4000 Mobile Ada Generation has dedicated 12 GB GDDR6 memory on a 192-bit bus, delivering a fixed 432.0 GB/s bandwidth. This gives the NVIDIA part predictable memory performance independent of the host system.

Clock behavior diverges sharply. The AMD Radeon 8065S has a boost clock of 3000 MHz, which is 80% higher than the NVIDIA part's 1665 MHz boost. However, the NVIDIA part compensates with its much larger shader count and dedicated memory. The AMD part achieves a pixel rate of 192.0 GPixel/s and a texture rate of 480.0 GTexel/s, while the NVIDIA part achieves 133.2 GPixel/s and 386.3 GTexel/s respectively.

Both GPUs are integrated graphics processors with no power connectors and portable-device-dependent display outputs. The AMD part uses PCIe 5.0 x16, while the NVIDIA part uses PCIe 4.0 x16. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD part is from the Navi Mobile (RX 8000M) generation with a release date in late 2025 and predecessor Polaris Mobile. The NVIDIA part is from the GeForce 40-series with a release date in March 2023, predecessor Ampere-MW, and successor Blackwell-MW.

Where Each One Wins

The AMD Radeon 8065S wins in scenarios that favor high clock speeds and high fill rates. Its boost clock of 3000 MHz versus 1665 MHz gives it an advantage in latency-sensitive workloads where clock speed matters more than raw shader throughput. Its pixel rate of 192.0 GPixel/s is 44% higher than the NVIDIA part's 133.2 GPixel/s, suggesting an edge in rasterization-heavy tasks that stress ROP throughput. Its texture rate of 480.0 GTexel/s is 24% higher than the NVIDIA part's 386.3 GTexel/s, indicating strength in texture-heavy scenes. The AMD part also carries a lower TDP of 55 W versus 110 W, which may allow for more efficient operation in thermally constrained portable devices.

The NVIDIA RTX 4000 Mobile Ada Generation wins in compute-heavy and memory-bound workloads. Its FP32 throughput of 24.72 TFLOPS is 61% higher than the AMD part's 15.36 TFLOPS, giving it a clear advantage in general-purpose compute, simulation, and rendering tasks that scale with shader count. The 12 GB of dedicated GDDR6 memory with 432.0 GB/s bandwidth provides consistent memory performance, whereas the AMD part depends on system memory bandwidth. The NVIDIA part also has 58 RT cores versus 40, and 232 tensor cores versus none on the AMD part, making it the stronger choice for ray tracing and AI-accelerated workloads. The Intel part's transistor count of 35,800 million versus unknown for the AMD part suggests a more complex compute architecture.

The NVIDIA part's higher TDP of 110 W allows for sustained performance in larger portable devices with better cooling. The AMD part's lower TDP of 55 W may be preferable for thin-and-light systems where thermal headroom is limited. The AMD part's PCIe 5.0 x16 interface offers double the bandwidth of the NVIDIA part's PCIe 4.0 x16, which could benefit system-shared memory access patterns if the host platform supports it.

Specification Differences

| Specification | AMD Radeon 8065S | NVIDIA RTX 4000 Mobile Ada Generation |

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

| Architecture | RDNA 3.5 | Ada Lovelace |

| Process node | 4 nm | 5 nm |

| Die size | 308 mm² | 294 mm² |

| Transistors | Unknown | 35,800 million |

| Base clock | 1295 MHz | 1290 MHz |

| Boost clock | 3000 MHz | 1665 MHz |

| Memory size | System Shared | 12 GB |

| Memory type | System Shared | GDDR6 |

| Memory bus | System Shared | 192 bit |

| Memory bandwidth | System Dependent | 432.0 GB/s |

| Shading units | 2560 | 7424 |

| TMUs | 160 | 232 |

| ROPs | 64 | 80 |

| RT cores | 40 | 58 |

| Tensor cores | None | 232 |

| Pixel rate | 192.0 GPixel/s | 133.2 GPixel/s |

| Texture rate | 480.0 GTexel/s | 386.3 GTexel/s |

| FP32 | 15.36 TFLOPS | 24.72 TFLOPS |

| FP16 | 15.36 TFLOPS (1:1) | 24.72 TFLOPS (1:1) |

| TDP | 55 W | 110 W |

| Bus interface | PCIe 5.0 x16 | PCIe 4.0 x16 |

| Release date | 2025-12-31 | 2023-03-20 |

Both parts share DirectX 12 Ultimate (12_2), OpenGL 4.6, Vulkan 1.4, IGP slot width, no power connectors, portable-device-dependent display outputs, and active production status.

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark entries for these two GPUs, and neither has an average benchmark score or nearest rival entries in the database. The comparison must therefore be drawn from their specification differences and theoretical throughput figures.

The largest win for the NVIDIA RTX 4000 Mobile Ada Generation is in FP32 compute. Its 24.72 TFLOPS is 61% higher than the AMD part's 15.36 TFLOPS. This gap directly translates to performance in shader-bound workloads, where the NVIDIA part's 7424 shading units vastly outnumber the AMD part's 2560. The NVIDIA part also has 232 tensor cores, which the AMD part lacks entirely, giving it a decisive advantage in AI inference and DLSS-style workloads.

The NVIDIA part also wins in memory capacity and bandwidth. Its 12 GB of GDDR6 memory with 432.0 GB/s bandwidth is fixed and dedicated, whereas the AMD part's memory is system-shared and system-dependent. In games or applications that require more than the system memory allocation, the NVIDIA part will not contend with CPU memory traffic.

The AMD Radeon 8065S wins in fill-rate metrics. Its pixel rate of 192.0 GPixel/s is 44% higher than the NVIDIA part's 133.2 GPixel/s, and its texture rate of 480.0 GTexel/s is 24% higher. These figures come from the AMD part's much higher boost clock of 3000 MHz, which more than compensates for its lower ROP and TMU counts in these specific throughput calculations. In rasterization-bound scenes with heavy overdraw or texture sampling, the AMD part could demonstrate measurable advantages.

The AMD part also wins on clock speed. Its base clock of 1295 MHz is only marginally higher than the NVIDIA part's 1290 MHz, but its boost clock of 3000 MHz is 80% higher than the NVIDIA part's 1665 MHz. This suggests that the AMD part is designed for bursty, high-frequency operation, while the NVIDIA part relies on wider parallelism at lower clocks.

The TDP difference is significant. The AMD part draws 55 W while the NVIDIA part draws 110 W. This means the AMD part uses half the power budget, which could translate to longer battery life or quieter operation in portable devices. The NVIDIA part's higher power budget, however, enables its larger shader array and dedicated memory to operate at sustained levels.

The die sizes are close, at 308 mm² for the AMD part and 294 mm² for the NVIDIA part, but the transistor counts differ sharply. The NVIDIA part packs 35,800 million transistors, while the AMD part's transistor count is unknown. The NVIDIA part's higher transistor density of 121.8M per mm² reflects its more complex compute architecture with tensor cores and a larger shader array.

The Verdict

The data indicates a clear split in use cases. The NVIDIA RTX 4000 Mobile Ada Generation is the stronger compute performer, delivering 24.72 TFLOPS FP32 versus 15.36 TFLOPS for the AMD Radeon 8065S. It also brings 12 GB of dedicated GDDR6 memory with 432.0 GB/s bandwidth, 58 RT cores, and 232 tensor cores. This makes it the appropriate choice for workloads that demand raw shader throughput, ray tracing, AI acceleration, or consistent memory performance regardless of the host system. Its 110 W TDP indicates it is designed for larger portable workstations with adequate cooling.

The AMD Radeon 8065S is the higher-frequency part, with a 3000 MHz boost clock that drives superior fill rates: 192.0 GPixel/s pixel rate and 480.0 GTexel/s texture rate. Its 55 W TDP makes it suitable for thinner, lighter devices where power efficiency is a priority. The PCIe 5.0 x16 interface provides ample bandwidth for its system-shared memory architecture, but that memory performance remains system-dependent. This part is better suited to rasterization-focused tasks and scenarios where the host platform can supply sufficient memory bandwidth.

Neither part has an average benchmark score, nearest rival data, or head-to-head results in the database, so the comparison relies on specification-level analysis. The NVIDIA part's release date of March 2023 and successor Blackwell-MW indicate it is a mature product. The AMD part's release date of late 2025 and predecessor Polaris Mobile place it as a newer design. Both are active in production.

For users who need maximum compute throughput, dedicated VRAM, and tensor-core acceleration, the NVIDIA RTX 4000 Mobile Ada Generation is the data-supported choice. For users who prioritize clock speed, fill rates, and lower power consumption in a portable form factor, the AMD Radeon 8065S offers distinct advantages. The database shows no overlap in their strongest metrics: the NVIDIA part wins on shader count, memory, and compute; the AMD part wins on frequency, fill rate, and power efficiency.