AMD Radeon RX 7800M vs AMD Ryzen Z2 Go GPU Comparison

Where Each One Wins

The recorded data presents a stark contrast between these two AMD GPUs. The AMD Radeon RX 7800M is a dedicated mobile graphics processor with a substantial benchmark presence, while the AMD Ryzen Z2 Go GPU is an integrated solution with no recorded benchmark scores in the database. This absence of data for the Z2 Go GPU means the RX 7800M wins every comparative category by default, though the nature of the comparison is more nuanced than a simple score differential.

The RX 7800M delivers a complete set of 3DMark, Geekbench, and Passmark results. Its 3DMark Steel Nomad DX12 score of 2994 places it in the 73rd percentile of all GPUs. The Geekbench OpenCL score of 120778 and Vulkan score of 126668 indicate strong compute and graphics API performance. Passmark results show a G3D score of 17613, a GPU Compute score of 9342, and DirectX 11 performance at 176. The Z2 Go GPU, by contrast, has an empty benchmark array, meaning the database holds no measurements for this part.

The percentile rankings reinforce this split. The RX 7800M sits at the 73rd percentile against all GPUs, while the Z2 Go GPU sits at the 50th percentile. The Z2 Go GPU also carries an average benchmark score of zero, reflecting the absence of recorded results. For any use case requiring measured performance data, the RX 7800M is the only option with empirical support.

Architecture Differences

The architectural gap between these two parts is substantial. The RX 7800M uses the Navi 32 chip built on RDNA 3.0 architecture, fabricated on a 5 nm process at TSMC. It belongs to the Navi Mobile (RX 7000M) generation with the codename Wheat Nas. The Z2 Go GPU uses the Rembrandt+ chip on RDNA 2.0 architecture, fabricated on a 6 nm process, also at TSMC. It belongs to the Console GPU (AMD) generation.

The RX 7800M packs 28,100 million transistors across a 346 mm² die, yielding a transistor density of 81.2 million per square millimeter. The Z2 Go GPU has 13,100 million transistors on a 208 mm² die, with a density of 63.0 million per square millimeter. This represents a 15,000 million transistor difference and a 138 mm² die size gap.

Compute resources diverge sharply. The RX 7800M has 3840 shading units, 240 texture mapping units, 96 render output units, and 60 ray tracing cores. The Z2 Go GPU has 768 shading units, 48 TMUs, 32 ROPs, and 12 ray tracing cores. The RX 7800M therefore has 3072 more shading units, 192 more TMUs, 64 more ROPs, and 48 more ray tracing cores.

Clock behavior differs significantly. The RX 7800M has a base clock of 1295 MHz, a boost clock of 2335 MHz, and a game clock of 2145 MHz. The Z2 Go GPU has a base clock of 800 MHz and a boost clock of 2700 MHz, with no game clock specified. The Z2 Go GPU boosts 365 MHz higher, but its base clock is 495 MHz lower.

Memory architecture is fundamentally different. The RX 7800M uses 12 GB of GDDR6 on a 192-bit bus, with memory clocked at 2250 MHz (18 Gbps effective) for a bandwidth of 432.0 GB/s. The Z2 Go GPU uses 16 GB of LPDDR5 on a 128-bit bus, with memory at 800 MHz (6.4 Gbps effective) for a bandwidth of 102.4 GB/s. The RX 7800M delivers 329.6 GB/s more bandwidth, while the Z2 Go GPU offers 4 GB more capacity.

Pixel and texture rates follow the same pattern. The RX 7800M achieves 224.2 GPixel/s and 560.4 GTexel/s. The Z2 Go GPU achieves 86.40 GPixel/s and 129.6 GTexel/s. Floating point throughput shows the RX 7800M at 35.87 TFLOPS FP32 and 35.87 TFLOPS FP16 (1:1 ratio), while the Z2 Go GPU delivers 4.147 TFLOPS FP32 and 8.294 TFLOPS FP16 (2:1 ratio). The RX 7800M is 31.723 TFLOPS ahead in FP32.

Power consumption differs by an order of magnitude. The RX 7800M has a TDP of 180 W, while the Z2 Go GPU has a TDP of 28 W. The RX 7800M uses 152 W more. The RX 7800M is an IGP slot width device with no power connectors and a PCIe 4.0 x16 bus interface, while the Z2 Go GPU has no slot width specified, no power connectors, and no bus interface listed. Display outputs also differ: the RX 7800M is portable device dependent, while the Z2 Go GPU has one USB Type-C output.

Both parts support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Neither has tensor cores. The RX 7800M was released on September 10, 2024, while the Z2 Go GPU was released on December 31, 2024. The RX 7800M lists its predecessor as Polaris Mobile; the Z2 Go GPU has no predecessor or successor listed.

The Verdict

The data indicates that the RX 7800M is the performance-oriented part, while the Z2 Go GPU is the efficiency-oriented part. The RX 7800M delivers 8.65 times the FP32 throughput of the Z2 Go GPU (35.87 TFLOPS versus 4.147 TFLOPS). It also provides 432.0 GB/s of memory bandwidth versus 102.4 GB/s, a 4.22 times advantage. The RX 7800M has 5 times the shading units, 5 times the TMUs, 3 times the ROPs, and 5 times the ray tracing cores.

The Z2 Go GPU counters with a 16 GB memory capacity versus 12 GB, a 4 GB advantage. It also has a higher boost clock at 2700 MHz versus 2335 MHz, and a much lower 28 W TDP versus 180 W. The Z2 Go GPU uses RDNA 2.0 on a 6 nm process, while the RX 7800M uses RDNA 3.0 on a 5 nm process.

For applications requiring maximum graphics throughput, the RX 7800M is the clear choice based on all measured benchmarks. For applications prioritizing power efficiency and memory capacity, the Z2 Go GPU has the structural advantage. The RX 7800M ranks in the 73rd percentile of all GPUs with an average benchmark score of 27883. The Z2 Go GPU has no measured average score and sits at the 50th percentile. The database contains no head-to-head benchmark results, so all conclusions derive from the individual specifications and the RX 7800M's recorded scores.

FAQ

Q: Which GPU has higher benchmark scores?

A: The RX 7800M has all recorded benchmark scores, including a 3DMark Steel Nomad DX12 score of 2994, Geekbench OpenCL of 120778, Geekbench Vulkan of 126668, and Passmark G3D of 17613. The Z2 Go GPU has no recorded benchmark scores.

Q: How do the memory bandwidths compare?

A: The RX 7800M provides 432.0 GB/s bandwidth via 12 GB GDDR6 on a 192-bit bus. The Z2 Go GPU provides 102.4 GB/s via 16 GB LPDDR5 on a 128-bit bus.

Q: What are the TDP differences?

A: The RX 7800M has a TDP of 180 W, while the Z2 Go GPU has a TDP of 28 W, a difference of 152 W.

Q: Which GPU has more compute units?

A: The RX 7800M has 3840 shading units, 240 TMUs, 96 ROPs, and 60 ray tracing cores. The Z2 Go GPU has 768 shading units, 48 TMUs, 32 ROPs, and 12 ray tracing cores.

Q: What architectural generations are involved?

A: The RX 7800M uses RDNA 3.0 on a 5 nm process with the Navi 32 chip. The Z2 Go GPU uses RDNA 2.0 on a 6 nm process with the Rembrandt+ chip.

Q: Do both support the same APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Neither has tensor cores.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries for these two GPUs. The winsA and winsB fields both show zero. Consequently, all performance comparisons must rely on the RX 7800M's absolute scores and the specification differences between the parts.

The RX 7800M's nearest rivals provide context for its performance level. Its average benchmark score of 27883 sits 0.2% above the AMD Radeon Pro Vega 20 (27839), 0.3% below the AMD Radeon Pro W5500X (27973), 0.5% below the NVIDIA GeForce GTX 980 Ti (28020), and 0.8% below the AMD FirePro S7150 (28117). This places the RX 7800M within a tight cluster of desktop-class GPUs from previous generations.

The RX 7800M's 3DMark Steel Nomad DX12 score of 2994 demonstrates its DirectX 12 capability. Its Geekbench Vulkan score of 126668 exceeds its OpenCL score of 120778 by 5890 points, indicating slightly stronger Vulkan performance. Passmark results show DirectX 11 scoring 176 versus DirectX 10 at 99 and DirectX 12 at 89, suggesting the legacy API path remains the strongest in that suite. The Passmark G2D score of 892 and G3D score of 17613 show the GPU's 2D and 3D performance split. GPU Compute in Passmark reaches 9342.

The Z2 Go GPU has no comparable scores. Its 50th percentile ranking is a default value, not a measured result, and its average benchmark score of zero confirms the absence of data. The RX 7800M's 73rd percentile ranking reflects its position against the full GPU database.

Specification Differences

The two GPUs differ across every major specification category. The RX 7800M uses a 5 nm process node versus 6 nm for the Z2 Go GPU. Transistor count stands at 28,100 million for the RX 7800M versus 13,100 million for the Z2 Go GPU. Die size measures 346 mm² versus 208 mm². Transistor density reaches 81.2 million per square millimeter versus 63.0 million.

Clock speeds differ in both base and boost frequencies. The RX 7800M has a 1295 MHz base clock and 2335 MHz boost. The Z2 Go GPU has an 800 MHz base clock and 2700 MHz boost. The RX 7800M also has a 2145 MHz game clock, which the Z2 Go GPU lacks. Memory clocks are 2250 MHz (18 Gbps effective) for the RX 7800M and 800 MHz (6.4 Gbps effective) for the Z2 Go GPU.

Memory capacity, type, bus width, and bandwidth all differ. The RX 7800M has 12 GB GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth. The Z2 Go GPU has 16 GB LPDDR5 on a 128-bit bus with 102.4 GB/s bandwidth. The RX 7800M's shading units number 3840 versus 768, TMUs 240 versus 48, ROPs 96 versus 32, and ray tracing cores 60 versus 12.

Pixel rate is 224.2 GPixel/s for the RX 7800M versus 86.40 GPixel/s for the Z2 Go GPU. Texture rate is 560.4 GTexel/s versus 129.6 GTexel/s. FP32 performance is 35.87 TFLOPS versus 4.147 TFLOPS. FP16 performance is 35.87 TFLOPS (1:1) versus 8.294 TFLOPS (2:1). TDP is 180 W versus 28 W.

Slot width, bus interface, and display outputs differ. The RX 7800M is an IGP slot width with PCIe 4.0 x16. The Z2 Go GPU has no slot width or bus interface listed. Display outputs are portable device dependent for the RX 7800M and 1x USB Type-C for the Z2 Go GPU. Both have no power connectors. Release dates differ by about three and a half months, with the RX 7800M on September 10, 2024 and the Z2 Go GPU on December 31, 2024. The RX 7800M lists Polaris Mobile as its predecessor; the Z2 Go GPU has none.