AMD Radeon 840M vs AMD Radeon RX 7600M XT Comparison

Head-to-Head Benchmarks

The AMD Radeon 840M and AMD Radeon RX 7600M XT occupy very different positions in the mobile graphics landscape. The RX 7600M XT is a discrete-class part with a recorded average benchmark score of 12710, placing it at the 52nd percentile of all GPUs in the database. The 840M, by contrast, has no recorded benchmark scores in the database, which means direct numerical comparisons are limited to architectural specifications and the RX 7600M XT's measured results.

Looking at the RX 7600M XT's benchmark results, its strongest showing comes in Geekbench OpenCL with a score of 74869, while Geekbench Vulkan delivers 27793. Passmark G3D shows 13907, and Passmark GPU Compute reaches 7140. In legacy DirectX tests, the card scores 175 in DirectX 9, 137 in DirectX 11, 76 in DirectX 10, and 58 in DirectX 12. The 3DMark Steel Nomad DX12 test records 2048. These figures establish a clear performance baseline for the discrete GPU.

Since the 840M lacks benchmark entries, the comparison relies on raw throughput numbers. The RX 7600M XT delivers 20.23 TFLOPS of FP32 compute, while the 840M provides 1,484.8 GFLOPS (approximately 1.48 TFLOPS). That represents a massive gap of roughly 13.6 times in favor of the discrete card. The RX 7600M XT also achieves 158.0 GPixel/s pixel rate versus 23.20 GPixel/s for the 840M, a 6.8 times advantage. Texture rate favors the RX 7600M XT at 316.0 GTexel/s against 46.40 GTexel/s, a 6.8 times difference as well.

The nearest rivals for the RX 7600M XT provide context for its positioning. It sits within 1% of the NVIDIA GeForce GTX 670 (which scores 12773, a delta of -0.5%), the NVIDIA Tesla K20Xm (12625, delta +0.7%), the NVIDIA GeForce GTX 590 (12830, delta -0.9%), and the AMD Radeon Pro 455 (12831, delta -0.9%). This places the RX 7600M XT in the performance band of older flagship desktop cards from roughly a decade ago, though it achieves that with far lower power draw.

Where Each One Wins

The RX 7600M XT wins decisively in every compute-heavy scenario. Its FP32 throughput of 20.23 TFLOPS dwarfs the 840M's 1,484.8 GFLOPS, making it the clear choice for gaming, 3D rendering, and GPU-accelerated workloads. The 8 GB of dedicated GDDR6 memory with 288.0 GB/s bandwidth provides a massive advantage over the 840M's system-shared memory, whose bandwidth is system dependent. This matters for texture-heavy games, high-resolution assets, and any workload that exceeds the system memory allocation available to the integrated GPU.

The 840M wins in power efficiency and integration. Its 15 W TDP versus 120 W for the RX 7600M XT means it can operate in thin-and-light laptops without discrete cooling solutions. The 840M is an IGP (integrated graphics processor) with no power connectors, while the RX 7600M XT, despite also being listed as IGP in slot width, requires 120 W of power delivery. For everyday tasks, light gaming, and battery-conscious use, the 840M's 4 nm process node and 2900 MHz boost clock (versus 2469 MHz for the RX 7600M XT) allow it to deliver usable graphics performance within a 15 W envelope.

The RX 7600M XT's 32 ray tracing cores versus 4 for the 840M gives it an 8 times advantage in hardware ray tracing. Similarly, its 2048 shading units versus 256 represents an 8 times difference, and its 128 texture mapping units versus 16 is also 8 times. The 64 ROPs versus 8 is a 8 times gap. In every parallel-processing metric, the discrete card wins by a factor of 8 or more.

Architecture Differences

The AMD Radeon 840M uses the Krackan Point chip built on RDNA 3.5 architecture, manufactured on a 4 nm process at TSMC. It belongs to the Navi III IGP generation for Strix Point Mobile. The RX 7600M XT uses the Navi 33 chip with RDNA 3.0 architecture, built on a 6 nm process at TSMC, with the codename Hotpink Bonefish and the Navi Mobile generation for RX 7000M series.

The 840M has 256 shading units, 16 TMUs, 8 ROPs, and 4 RT cores. The RX 7600M XT has 2048 shading units, 128 TMUs, 64 ROPs, and 32 RT cores. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Neither has tensor cores listed in the database.

The RX 7600M XT uses 13,300 million transistors on a 204 mm² die, with a transistor density of 65.2M per mm². The 840M's transistor count and die size are listed as unknown. The RX 7600M XT has a base clock of 1280 MHz, a game clock of 2023 MHz, and a boost clock of 2469 MHz. The 840M has a base clock of 400 MHz and a boost clock of 2900 MHz, with no game clock listed.

Memory architecture differs fundamentally. The 840M uses system-shared memory with system-dependent bandwidth, while the RX 7600M XT uses 8 GB of GDDR6 on a 128-bit bus with 288.0 GB/s bandwidth and an effective 18 Gbps memory speed.

The bus interface also differs: the 840M uses PCIe 4.0 x8, while the RX 7600M XT uses PCIe 4.0 x16. Both are listed as IGP in slot width with no power connectors, and both have display outputs that are portable device dependent.

The RX 7600M XT's FP16 performance is 40.45 TFLOPS at a 2:1 ratio, while the 840M's FP16 is 1,484.8 GFLOPS at a 1:1 ratio. The 840M's FP32 and FP16 are identical, indicating it does not have dedicated FP16 acceleration, whereas the RX 7600M XT doubles its throughput in FP16.

FAQ

Q: Which GPU has higher boost clock speed?

A: The AMD Radeon 840M has a boost clock of 2900 MHz, which is higher than the RX 7600M XT's boost clock of 2469 MHz. However, the RX 7600M XT compensates with a base clock of 1280 MHz versus 400 MHz and a much larger execution resource pool.

Q: How much memory does each GPU have?

A: The RX 7600M XT has 8 GB of dedicated GDDR6 memory on a 128-bit bus with 288.0 GB/s bandwidth. The 840M uses system-shared memory, meaning its capacity and bandwidth depend on the host system's RAM configuration.

Q: Do both GPUs support ray tracing?

A: Yes, both support DirectX 12 Ultimate (12_2), which includes ray tracing. The RX 7600M XT has 32 RT cores, while the 840M has 4 RT cores, giving the discrete card an 8 times advantage in hardware ray tracing resources.

Q: What is the power consumption difference?

A: The 840M has a TDP of 15 W, while the RX 7600M XT has a TDP of 120 W. This is an 8 times difference in power draw, making the 840M suitable for fanless or low-power designs.

Q: Which GPU has a smaller manufacturing process?

A: The 840M uses a 4 nm process at TSMC, while the RX 7600M XT uses a 6 nm process at TSMC. The smaller process node gives the integrated GPU a density advantage despite its lower performance.

Q: What is the RX 7600M XT's benchmark standing relative to other GPUs?

A: The RX 7600M XT sits at the 52nd percentile of all GPUs in the database, with an average benchmark score of 12710. Its nearest rivals include the NVIDIA GeForce GTX 670 (12773, -0.5%), NVIDIA Tesla K20Xm (12625, +0.7%), NVIDIA GeForce GTX 590 (12830, -0.9%), and AMD Radeon Pro 455 (12831, -0.9%).

Specification Differences

| Specification | AMD Radeon 840M | AMD Radeon RX 7600M XT |

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

| Architecture | RDNA 3.5 | RDNA 3.0 |

| Chip | Krackan Point | Navi 33 |

| Process Node | 4 nm | 6 nm |

| Transistors | Unknown | 13,300 million |

| Die Size | Unknown | 204 mm² |

| Base Clock | 400 MHz | 1280 MHz |

| Boost Clock | 2900 MHz | 2469 MHz |

| Game Clock | Not listed | 2023 MHz |

| Memory Size | System Shared | 8 GB GDDR6 |

| Memory Bus | System Shared | 128 bit |

| Memory Bandwidth | System Dependent | 288.0 GB/s |

| Shading Units | 256 | 2048 |

| TMUs | 16 | 128 |

| ROPs | 8 | 64 |

| RT Cores | 4 | 32 |

| FP32 Performance | 1,484.8 GFLOPS | 20.23 TFLOPS |

| FP16 Performance | 1,484.8 GFLOPS (1:1) | 40.45 TFLOPS (2:1) |

| Pixel Rate | 23.20 GPixel/s | 158.0 GPixel/s |

| Texture Rate | 46.40 GTexel/s | 316.0 GTexel/s |

| TDP | 15 W | 120 W |

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

| Release Date | 2025-02-28 | 2023-01-03 |

| Predecessor | Navi II IGP | Polaris Mobile |

The Verdict

The data presents a clear performance hierarchy. The RX 7600M XT is approximately 13.6 times faster in FP32 compute, 6.8 times faster in pixel fill rate, and 6.8 times faster in texture fill rate than the 840M. It has 8 times the shading units, TMUs, ROPs, and RT cores. Its 288.0 GB/s dedicated memory bandwidth eliminates the system-shared bottleneck that limits the 840M.

The 840M counters with a 15 W TDP versus 120 W, a 4 nm process versus 6 nm, and a higher boost clock of 2900 MHz versus 2469 MHz. It is a modern integrated solution for portable devices where battery life and thermal limits take priority over raw performance. Its release date of February 2025 makes it a newer design, while the RX 7600M XT dates from January 2023.

The RX 7600M XT's benchmark standing at the 52nd percentile, with an average score of 12710, places it in the same performance class as the NVIDIA GeForce GTX 670 and GTX 590. This is a capable discrete mobile GPU for gaming and compute workloads that demand dedicated memory and high throughput. The 840M, without any recorded benchmarks, remains an unquantified but architecturally modern IGP suited for lightweight tasks.

For users choosing between these two, the deciding factor is the power envelope. A 15 W integrated solution cannot match a 120 W discrete part in sustained performance, but it enables thinner, lighter, and quieter laptops. The RX 7600M XT is the only option for serious gaming, 3D rendering, or GPU compute, while the 840M serves everyday productivity and casual use within a minimal power budget.