AMD Radeon 780M vs AMD Radeon RX 7600S Comparison

The AMD Radeon 780M and AMD Radeon RX 7600S are both RDNA 3.0 parts, but they serve fundamentally different purposes. The 780M is an integrated graphics processor embedded in the Phoenix chip, while the RX 7600S is a discrete mobile GPU from the Navi 33 line. The benchmark data shows a decisive performance gap: the RX 7600S wins all three head-to-head tests, with its average benchmark score of 16696 sitting close to the 780M's 17588 average. This places both in the 60th percentile of all GPUs, but the distribution of wins and losses tells a more complex story about where each part makes sense.

Where Each One Wins

The AMD Radeon RX 7600S wins every single benchmark in the head-to-head comparison. In 3DMark Steel Nomad DX12, it scores 1888 versus the 780M's 480, a massive 74.6% advantage. The gap narrows somewhat in compute workloads but remains substantial: in Geekbench OpenCL, the RX 7600S scores 68012 against 18602 (72.6% ahead), and in Geekbench Vulkan, it scores 73868 against 33683 (54.4% ahead). There are no tests in the data where the 780M comes out on top.

However, the 780M wins in a different category: power efficiency and integration. It operates at a 15 W TDP, whereas the RX 7600S draws 75 W. The 780M is an IGP with no power connectors, making it suitable for thin-and-light systems where space and cooling are at a premium. The RX 7600S, despite also being listed as IGP slot width and having no power connectors, is a discrete chip that requires a laptop chassis designed for higher thermal loads.

For users who need raw graphics throughput, the RX 7600S is the clear winner. For users who need a capable GPU that doesn't consume much power or require a dedicated cooling solution, the 780M is the practical choice. The data shows that the 780M's 8.909 TFLOPS FP32 performance, while lower than the RX 7600S's 15.77 TFLOPS, is still respectable for an integrated solution.

Architecture Differences

The two GPUs share the same RDNA 3.0 architecture but differ significantly in implementation. The 780M uses the Phoenix chip on a 4 nm TSMC process, packing 25,390 million transistors into a 178 mm² die. The RX 7600S uses the Navi 33 chip on a 6 nm TSMC process, with 13,300 million transistors on a larger 204 mm² die. This is a counterintuitive result: the 780M has nearly twice the transistor count but a smaller die, giving it a transistor density of 142.6M per mm² versus the RX 7600S's 65.2M per mm².

The core configurations differ dramatically. The 780M has 768 shading units, 48 texture mapping units, 32 ROPs, and 12 ray tracing cores. The RX 7600S more than doubles this: 1792 shading units, 112 TMUs, 64 ROPs, and 28 RT cores. This explains the raw performance gap. The 780M clocks higher, with a boost of 2900 MHz versus the RX 7600S's 2200 MHz, but the RX 7600S compensates with more cores and a higher base clock of 1500 MHz versus 800 MHz.

Memory is another major divider. The 780M uses system shared memory, with bandwidth that is system dependent. The RX 7600S has 8 GB of dedicated GDDR6 memory on a 128-bit bus, delivering 256.0 GB/s of bandwidth. This dedicated memory is crucial for gaming and compute workloads, as it doesn't compete with the CPU for bandwidth. The RX 7600S also has a game clock of 1865 MHz and memory running at 2000 MHz (16 Gbps effective), whereas the 780M has no game clock listed and relies entirely on system memory.

The bus interface also differs: the 780M uses PCIe 4.0 x8, while the RX 7600S uses PCIe 4.0 x16. This gives the discrete GPU twice the bandwidth to the rest of the system. The RX 7600S also supports FP16 at a 2:1 ratio (31.54 TFLOPS) versus the 780M's 1:1 ratio (8.909 TFLOPS), which matters for workloads that can leverage half-precision math.

Head-to-Head Benchmarks

The largest single victory for the RX 7600S comes in 3DMark Steel Nomad DX12, where it scores 1888 versus 480. That is a 74.6% advantage, and it reflects the RX 7600S's superior fill rates: 140.8 GPixel/s pixel rate and 246.4 GTexel/s texture rate, versus 92.80 GPixel/s and 139.2 GTexel/s on the 780M. In real-world terms, this means the RX 7600S can handle modern DX12 titles at higher resolutions and detail settings.

In Geekbench OpenCL, the RX 7600S scores 68012, a 72.6% improvement over the 780M's 18602. This is a compute-heavy test that stresses raw FP32 throughput, and the RX 7600S's 15.77 TFLOPS nearly double the 780M's 8.909 TFLOPS. The gap is slightly smaller in Geekbench Vulkan, where the RX 7600S scores 73868 versus 33683, a 54.4% delta. This narrower margin suggests that the 780M's higher clock speed (2900 MHz boost) helps in API-optimized workloads, but the RX 7600S's core count advantage still dominates.

Notably, the 780M's average benchmark score of 17588 is actually higher than the RX 7600S's 16696, despite losing every head-to-head test. This is because the 780M's nearest rivals include the NVIDIA GeForce RTX 4060 (avg score 17639, delta -0.3%) and AMD Radeon Pro 560 (17551, delta 0.2%), while the RX 7600S sits near the NVIDIA T400 4 GB (16792, delta -0.6%) and NVIDIA Tesla M4 (16932, delta -1.4%). The 780M's percentile rank of 61 versus 60 for the RX 7600S reflects this quirk, but the head-to-head data is unambiguous about which GPU is faster.

FAQ

Q: Which GPU is faster in DirectX 12 workloads?

A: The AMD Radeon RX 7600S is significantly faster. In 3DMark Steel Nomad DX12, it scores 1888 versus the 780M's 480, a 74.6% advantage. This is the largest delta in the head-to-head data.

Q: How does memory configuration affect performance?

A: The RX 7600S has 8 GB of dedicated GDDR6 memory on a 128-bit bus with 256.0 GB/s bandwidth. The 780M uses system shared memory with system-dependent bandwidth. Dedicated memory avoids contention with the CPU, which is a major factor in the RX 7600S's higher scores.

Q: Is the 780M competitive in any workload?

A: The data shows zero benchmark wins for the 780M in the head-to-head tests. However, its average benchmark score of 17588 is higher than the RX 7600S's 16696, and it ranks at the 61st percentile versus 60th. This suggests the 780M performs well in other tests not listed, but in the tests shown, the RX 7600S wins all three.

Q: What is the power draw difference?

A: The 780M has a 15 W TDP, while the RX 7600S has a 75 W TDP. The 780M is an integrated part with no power connectors, making it suitable for low-power systems. The RX 7600S requires a laptop designed for 75 W GPUs.

Q: Which GPU has more ray tracing cores?

A: The RX 7600S has 28 ray tracing cores, while the 780M has 12. Both support DirectX 12 Ultimate (12_2), but the RX 7600S has more hardware resources for RT workloads.

Q: Do these GPUs support the same APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7600S additionally has FP16 at a 2:1 ratio, while the 780M runs FP16 at 1:1.

The Verdict

The data is straightforward: the AMD Radeon RX 7600S wins every benchmark in the head-to-head comparison, with deltas ranging from 54.4% to 74.6%. If you need maximum graphics performance, the RX 7600S is the only choice between these two. Its 1792 shading units, 8 GB of GDDR6 memory, and 15.77 TFLOPS FP32 performance make it a legitimate gaming GPU for 1080p and even some 1440p workloads. The 780M, with its 768 shading units and shared system memory, cannot compete in the same class.

However, the 780M is not without merit. Its 15 W TDP makes it ideal for ultraportable laptops where battery life and thermal management are priorities. The 780M's higher average benchmark score (17588 vs 16696) and slightly better percentile rank (61 vs 60) suggest that in certain synthetic tests, it punches above its weight. But those tests are not the ones where it matters most for gaming or compute.

The RX 7600S is the pick for anyone who prioritizes frame rates and compute throughput. The 780M is the pick for anyone who needs a GPU that fits into a 15 W power budget and doesn't require dedicated memory. The RX 7600S is a 75 W part that needs a proper cooling solution, but it delivers roughly 3.5x the FP32 performance of the 780M. Choose based on your chassis and power constraints, not on the benchmark averages, which are misleadingly close.

Specification Differences

| Specification | AMD Radeon 780M | AMD Radeon RX 7600S |

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

| Chip | Phoenix | Navi 33 |

| Process Node | 4 nm | 6 nm |

| Transistors | 25,390 million | 13,300 million |

| Die Size | 178 mm² | 204 mm² |

| Transistor Density | 142.6M / mm² | 65.2M / mm² |

| Base Clock | 800 MHz | 1500 MHz |

| Boost Clock | 2900 MHz | 2200 MHz |

| Game Clock | None | 1865 MHz |

| Memory | System Shared | 8 GB GDDR6 |

| Memory Bus | System Shared | 128 bit |

| Memory Bandwidth | System Dependent | 256.0 GB/s |

| Shading Units | 768 | 1792 |

| TMUs | 48 | 112 |

| ROPs | 32 | 64 |

| Ray Tracing Cores | 12 | 28 |

| Pixel Rate | 92.80 GPixel/s | 140.8 GPixel/s |

| Texture Rate | 139.2 GTexel/s | 246.4 GTexel/s |

| FP32 Performance | 8.909 TFLOPS | 15.77 TFLOPS |

| FP16 Performance | 8.909 TFLOPS (1:1) | 31.54 TFLOPS (2:1) |

| TDP | 15 W | 75 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |

| Release Date | 2024-01-30 | 2023-01-03 |

| Predecessor | Navi II IGP | Polaris Mobile |