AMD Radeon RX 7800M vs AMD Ryzen Z2 GPU Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive performance gulf between these two AMD graphics solutions. The AMD Radeon RX 7800M holds an average benchmark score of 27,883, while the AMD Ryzen Z2 GPU has no recorded benchmark scores, resulting in an average of 0. This places the RX 7800M in the 73rd percentile among all GPUs, whereas the Ryzen Z2 GPU sits in the 50th percentile. The RX 7800M delivers 8.29 TFLOPS of FP32 compute compared to the Ryzen Z2 GPU's 8.294 TFLOPS, a figure that appears nearly identical on paper but is misleading without the RX 7800M's full benchmark suite.

The RX 7800M posts a 3DMark Steel Nomad DX12 score of 2,994, a Geekbench OpenCL score of 120,778, and a Geekbench Vulkan score of 126,668. Its Passmark results include 17,613 in G3D, 9,342 in GPU compute, 892 in G2D, 176 in DirectX 11, 174 in DirectX 9, 99 in DirectX 10, and 89 in DirectX 12. The Ryzen Z2 GPU has no entries in any of these tests within the database, meaning direct head-to-head deltas cannot be calculated. The absence of data for the Ryzen Z2 GPU is itself a finding: every recorded benchmark favors the RX 7800M by default.

Relative to its nearest rivals, the RX 7800M sits within a tight cluster. It trails the AMD FirePro S7150 by 0.8%, lags the NVIDIA GeForce GTX 980 Ti by 0.5%, and falls behind the AMD Radeon Pro W5500X by 0.3%. It edges out the AMD Radeon Pro Vega 20 by 0.2%. These deltas indicate that the RX 7800M's average score of 27,883 is bracketed by professional and older high-end desktop parts, with no rival in the nearest list exceeding it by more than a fraction of a percent. The Ryzen Z2 GPU, with no rival list and no average score, occupies a separate category entirely, one defined by its integrated role rather than standalone graphics throughput.

Architecture Differences

The two GPUs share the RDNA 3.0 architecture and TSMC as the foundry, but the similarities end there. The RX 7800M uses the Navi 32 chip with a 5 nm process node, while the Ryzen Z2 GPU uses the Hawk Point chip on a 4 nm node. The RX 7800M packs 28,100 million transistors on a 346 mm² die, yielding a transistor density of 81.2M per mm². The Ryzen Z2 GPU contains 25,390 million transistors on a 178 mm² die, achieving a higher density of 142.6M per mm². The smaller, denser Hawk Point die reflects a different design goal: integration and efficiency rather than raw throughput.

Compute resources differ sharply. The RX 7800M carries 3,840 shading units, 240 texture mapping units, 96 render output units, and 60 ray tracing cores. The Ryzen Z2 GPU has 768 shading units, 48 TMUs, 32 ROPs, and 12 ray tracing cores. That is a 5x difference in shading units, a 5x difference in TMUs, a 3x difference in ROPs, and a 5x difference in ray tracing cores. Pixel rate tells the same story: 224.2 GPixel/s for the RX 7800M versus 86.40 GPixel/s for the Ryzen Z2 GPU. Texture rate is 560.4 GTexel/s versus 129.6 GTexel/s. FP32 throughput is 35.87 TFLOPS against 8.294 TFLOPS, and FP16 matches at 35.87 TFLOPS and 8.294 TFLOPS respectively, both at a 1:1 ratio.

Clock behavior diverges as well. The RX 7800M has a base clock of 1295 MHz, a boost of 2335 MHz, and a game clock of 2145 MHz. The Ryzen Z2 GPU runs a base of 800 MHz and a boost of 2700 MHz, with no game clock listed. The Ryzen Z2 GPU boosts higher but starts far lower, and its reduced execution units mean that higher frequency cannot compensate for the massive shortfall in shading capacity. Memory architecture also separates them. The RX 7800M uses 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s of bandwidth and a memory clock of 2250 MHz (18 Gbps effective). The Ryzen Z2 GPU uses 16 GB of LPDDR5X on a 128-bit bus with 119.9 GB/s of bandwidth and a memory clock of 937 MHz (7.5 Gbps effective). The RX 7800M has more than 3.6x the memory bandwidth despite having 4 GB less capacity.

Power and physical design differ by a wide margin. The RX 7800M has a TDP of 180 W, uses no power connectors (it is an IGP), and has a slot width classed as IGP. The Ryzen Z2 GPU has a TDP of 28 W, also uses no power connectors, and lists no slot width. Display outputs are portable-device dependent for the RX 7800M, while the Ryzen Z2 GPU specifies 1x USB Type-C. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7800M connects via PCIe 4.0 x16; the Ryzen Z2 GPU has no bus interface listed.

FAQ

Q: Which GPU has the higher FP32 compute throughput?

A: The AMD Radeon RX 7800M delivers 35.87 TFLOPS of FP32, compared to 8.294 TFLOPS for the AMD Ryzen Z2 GPU.

Q: How do their memory configurations compare?

A: The RX 7800M uses 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth. The Ryzen Z2 GPU uses 16 GB of LPDDR5X on a 128-bit bus with 119.9 GB/s bandwidth.

Q: Are both GPUs based on the same architecture?

A: Yes, both use RDNA 3.0 and are built by TSMC, but the RX 7800M uses the Navi 32 chip on a 5 nm node, while the Ryzen Z2 GPU uses the Hawk Point chip on a 4 nm node.

Q: What is the transistor count difference?

A: The RX 7800M has 28,100 million transistors on a 346 mm² die. The Ryzen Z2 GPU has 25,390 million transistors on a 178 mm² die.

Q: How do their ray tracing capabilities compare?

A: The RX 7800M has 60 ray tracing cores, while the Ryzen Z2 GPU has 12 ray tracing cores.

Q: What is the average benchmark score for each?

A: The RX 7800M has an average benchmark score of 27,883 and sits in the 73rd percentile. The Ryzen Z2 GPU has an average benchmark score of 0 and sits in the 50th percentile.

Specification Differences

| Specification | AMD Radeon RX 7800M | AMD Ryzen Z2 GPU |

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

| Chip | Navi 32 | Hawk Point |

| Process Node | 5 nm | 4 nm |

| Transistors | 28,100 million | 25,390 million |

| Die Size | 346 mm² | 178 mm² |

| Transistor Density | 81.2M / mm² | 142.6M / mm² |

| Base Clock | 1295 MHz | 800 MHz |

| Boost Clock | 2335 MHz | 2700 MHz |

| Game Clock | 2145 MHz | Not listed |

| Memory Clock | 2250 MHz (18 Gbps effective) | 937 MHz (7.5 Gbps effective) |

| Memory Size | 12 GB | 16 GB |

| Memory Type | GDDR6 | LPDDR5X |

| Memory Bus Width | 192 bit | 128 bit |

| Memory Bandwidth | 432.0 GB/s | 119.9 GB/s |

| Shading Units | 3840 | 768 |

| TMUs | 240 | 48 |

| ROPs | 96 | 32 |

| Ray Tracing Cores | 60 | 12 |

| Pixel Rate | 224.2 GPixel/s | 86.40 GPixel/s |

| Texture Rate | 560.4 GTexel/s | 129.6 GTexel/s |

| FP32 | 35.87 TFLOPS | 8.294 TFLOPS |

| FP16 | 35.87 TFLOPS (1:1) | 8.294 TFLOPS (1:1) |

| TDP | 180 W | 28 W |

| Slot Width | IGP | Not listed |

| Bus Interface | PCIe 4.0 x16 | Not listed |

| Display Outputs | Portable Device Dependent | 1x USB Type-C |

| Release Date | 2024-09-10 | 2024-12-31 |

| Average Benchmark Score | 27883 | 0 |

| Percentile vs All GPUs | 73 | 50 |

The Verdict

The data points to a clear separation of roles. The AMD Radeon RX 7800M is a high-throughput mobile-class graphics processor: 35.87 TFLOPS of FP32, 60 ray tracing cores, 432.0 GB/s of memory bandwidth, and a 73rd percentile standing among all GPUs. The AMD Ryzen Z2 GPU is a low-power integrated solution: 8.294 TFLOPS, 12 ray tracing cores, 119.9 GB/s of memory bandwidth, and a 50th percentile standing. The RX 7800M wins every recorded metric where both have data, and the Ryzen Z2 GPU has no recorded benchmark scores to contest any of them.

For workloads that depend on shading throughput, texture fill, or memory bandwidth, the RX 7800M is the only viable choice among the two. Its 5x advantage in shading units and TMUs, combined with 3.6x more memory bandwidth, translates directly into higher frame rates in rasterized and ray-traced content. The Ryzen Z2 GPU cannot match this, and its higher boost clock of 2700 MHz does not offset the execution unit deficit. For scenarios where power draw is the limiting factor, the Ryzen Z2 GPU's 28 W TDP versus 180 W makes it the appropriate selection. The RX 7800M targets devices with active cooling and larger thermal budgets; the Ryzen Z2 GPU targets compact, power-constrained systems.

Where Each One Wins

The RX 7800M wins in every performance-oriented category. Its 35.87 TFLOPS FP32 output is 4.3x that of the Ryzen Z2 GPU. Its texture rate of 560.4 GTexel/s is 4.3x higher, and its pixel rate of 224.2 GPixel/s is 2.6x higher. Memory bandwidth of 432.0 GB/s dwarfs the 119.9 GB/s of the Ryzen Z2 GPU, making the RX 7800M the better fit for high-resolution textures, large scene complexity, and bandwidth-sensitive effects. The 60 ray tracing cores versus 12 give it a substantial edge in ray-traced workloads, and the 12 GB GDDR6 frame buffer, while smaller in capacity, operates on a 192-bit bus that provides far greater throughput than the 128-bit LPDDR5X configuration.

The Ryzen Z2 GPU wins in efficiency and integration. Its 28 W TDP is 152 W lower than the RX 7800M's 180 W. Its 4 nm process node and 142.6M transistors per mm² density indicate a design optimized for compact dies and low power envelopes. The 16 GB of LPDDR5X memory offers more capacity than the RX 7800M's 12 GB, which benefits memory-hungry tasks that do not require high bandwidth, such as certain compute workloads or system-level memory sharing in a console-style device. The single USB Type-C display output further signals a minimalist, portable design philosophy. For a system where sustained power draw must stay minimal and physical space is tight, the Ryzen Z2 GPU is the data-backed choice. For everything else, the RX 7800M dominates.