AMD Instinct MI308X vs AMD Ryzen Z2 GPU Comparison

Head-to-Head Benchmarks

The database shows no head-to-head benchmark results between the AMD Instinct MI308X and the AMD Ryzen Z2 GPU. Both parts record an average benchmark score of zero, and both sit at the 50th percentile in the GPU ranking database. Neither unit has any recorded performance entries, so direct frame-rate, compute, or ray-tracing comparisons cannot be derived from the recorded data.

The absence of measured results is not surprising given the product positioning. The MI308X is a datacenter accelerator with no display outputs, while the Ryzen Z2 GPU is a console-class integrated graphics solution. The architectural gulf between them makes a head-to-head workload comparison largely theoretical until benchmark submissions appear. The data currently indicates no wins for either side, with zero wins recorded for both parts.

Architecture Differences

The MI308X uses the Aqua Vanjaram chip built on CDNA 3.0 architecture, manufactured on a 5 nm process at TSMC. The Ryzen Z2 GPU uses the Hawk Point chip on RDNA 3.0 architecture, manufactured on a 4 nm process, also at TSMC. The process node difference is one nanometer, which is a small but measurable manufacturing advantage for the Z2 GPU.

Transistor counts differ enormously. The MI308X integrates 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4 million per square millimeter. The Ryzen Z2 GPU integrates 25,390 million transistors on a 178 mm² die, yielding a density of 142.6 million per square millimeter. The MI308X die is roughly 5.7 times larger in area and carries approximately 6 times more transistors. The density figures show the MI308X packs slightly more transistors per area, despite the older process node.

Shading unit counts scale with the respective design goals. The MI308X has 19,456 shading units, while the Ryzen Z2 GPU has 768. Texture mapping units number 1,216 on the MI308X versus 48 on the Z2 GPU. The raster operation pipeline differs structurally: the MI308X reports zero ROPs and a pixel rate of 0 MPixel/s, confirming it is not designed for traditional rasterized display output. The Z2 GPU has 32 ROPs and a pixel rate of 86.40 GPixel/s. The Z2 GPU also includes 12 ray tracing cores, while the MI308X lists no ray tracing core count in the database.

Memory architecture reflects the compute-versus-client split. The MI308X uses 192 GB of HBM3 across an 8192-bit bus, achieving 5.32 TB/s bandwidth. The Ryzen Z2 GPU uses 16 GB of LPDDR5X across a 128-bit bus, reaching 119.9 GB/s. The MI308X memory bus is 64 times wider, and bandwidth is roughly 44 times higher. Memory clock figures differ as well: the MI308X runs 1300 MHz with 5.2 Gbps effective transfer, while the Z2 GPU runs 937 MHz with 7.5 Gbps effective. The Z2 GPU uses a faster per-pin transfer rate, but the MI308X overwhelms it with sheer bus width.

Compute throughput follows the same pattern. The MI308X delivers 81.72 TFLOPS for both FP32 and FP16, with a 1:1 ratio. The Ryzen Z2 GPU delivers 8.294 TFLOPS for both FP32 and FP16, also at 1:1. The MI308X is roughly 9.85 times higher in raw floating-point throughput. Texture rate shows 2,553.6 GTexel/s for the MI308X versus 129.6 GTexel/s for the Z2 GPU, a factor of about 19.7.

Clock behavior differs by design intent. The MI308X has a base clock of 1000 MHz and a boost clock of 2100 MHz. The Ryzen Z2 GPU has a lower base clock of 800 MHz but a higher boost clock of 2700 MHz. The Z2 GPU reaches a 600 MHz higher boost ceiling, while the MI308X relies on massive parallelism rather than clock speed.

Power envelopes are the most dramatic differentiator. The MI308X carries a TDP of 750 W with a suggested PSU of 1150 W. The Ryzen Z2 GPU has a TDP of 28 W and no suggested PSU listed. The MI308X consumes approximately 26.8 times the power of the Z2 GPU. The MI308X uses an OAM module slot width with no power connectors listed, while the Z2 GPU also lists no power connectors but exposes a single USB Type-C display output. The MI308X has no display outputs at all.

API support highlights the client-versus-server split. The Ryzen Z2 GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI308X lists N/A for DirectX, OpenGL, and Vulkan. The Z2 GPU is a fully featured graphics API device; the MI308X is a compute accelerator that does not expose conventional graphics APIs in the database.

FAQ

Q: Which GPU has higher raw FP32 compute throughput?

A: The AMD Instinct MI308X delivers 81.72 TFLOPS FP32, while the AMD Ryzen Z2 GPU delivers 8.294 TFLOPS FP32. The MI308X is approximately 9.85 times higher in FP32 throughput.

Q: How do the memory configurations compare?

A: The MI308X has 192 GB of HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The Ryzen Z2 GPU has 16 GB of LPDDR5X on a 128-bit bus with 119.9 GB/s bandwidth. The MI308X provides roughly 44 times more memory bandwidth.

Q: Which GPU supports conventional graphics APIs?

A: The Ryzen Z2 GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI308X lists N/A for DirectX, OpenGL, and Vulkan, indicating it is not a conventional graphics API device.

Q: What are the power requirements for each?

A: The MI308X has a TDP of 750 W and a suggested PSU of 1150 W. The Ryzen Z2 GPU has a TDP of 28 W and no suggested PSU listed. The MI308X draws about 26.8 times the power.

Q: Does either GPU have ray tracing capability?

A: The Ryzen Z2 GPU includes 12 ray tracing cores. The MI308X lists no ray tracing core count in the database.

Q: What process nodes are used?

A: The MI308X uses a 5 nm TSMC process with 153,000 million transistors on a 1017 mm² die. The Ryzen Z2 GPU uses a 4 nm TSMC process with 25,390 million transistors on a 178 mm² die.

Specification Differences

| Specification | AMD Instinct MI308X | AMD Ryzen Z2 GPU |

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

| Chip | Aqua Vanjaram | Hawk Point |

| Architecture | CDNA 3.0 | RDNA 3.0 |

| Generation | Instinct (MIx) | Console GPU (AMD) |

| Process Node | 5 nm | 4 nm |

| Transistors | 153,000 million | 25,390 million |

| Die Size | 1017 mm² | 178 mm² |

| Transistor Density | 150.4M / mm² | 142.6M / mm² |

| Base Clock | 1000 MHz | 800 MHz |

| Boost Clock | 2100 MHz | 2700 MHz |

| Memory Clock | 1300 MHz 5.2 Gbps effective | 937 MHz 7.5 Gbps effective |

| Memory Size | 192 GB | 16 GB |

| Memory Type | HBM3 | LPDDR5X |

| Memory Bus Width | 8192 bit | 128 bit |

| Memory Bandwidth | 5.32 TB/s | 119.9 GB/s |

| Shading Units | 19456 | 768 |

| TMUs | 1216 | 48 |

| ROPs | 0 | 32 |

| RT Cores | None listed | 12 |

| Pixel Rate | 0 MPixel/s | 86.40 GPixel/s |

| Texture Rate | 2,553.6 GTexel/s | 129.6 GTexel/s |

| FP32 | 81.72 TFLOPS | 8.294 TFLOPS |

| FP16 | 81.72 TFLOPS (1:1) | 8.294 TFLOPS (1:1) |

| TDP | 750 W | 28 W |

| Slot Width | OAM Module | None listed |

| Suggested PSU | 1150 W | None listed |

| Bus Interface | PCIe 5.0 x16 | None listed |

| Display Outputs | No outputs | 1x USB Type-C |

| DirectX | N/A | 12 Ultimate (12_2) |

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Production Status | None listed | Active |

| Release Date | 2023-12-05T17:00:00.000Z | 2024-12-31T17:00:00.000Z |

| Predecessor | Radeon Instinct | None listed |

The Verdict

The recorded data separates these two GPUs into distinct categories. The AMD Instinct MI308X is a datacenter compute accelerator. Its 750 W TDP, 192 GB HBM3 memory, 5.32 TB/s bandwidth, and 81.72 TFLOPS FP32 throughput place it in a class built for large-scale parallel compute. It has no display outputs, no conventional graphics API support, and zero ROPs. The Ryzen Z2 GPU is a low-power console-class integrated graphics solution with 28 W TDP, 16 GB LPDDR5X memory, 8.294 TFLOPS FP32, 12 ray tracing cores, and full DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support.

A user working on workloads that scale with memory capacity and raw FP32 throughput would choose the MI308X based on its 192 GB memory and 81.72 TFLOPS. A user needing a graphics-capable device with display output, ray tracing, and modern API support would choose the Ryzen Z2 GPU. The MI308X has no path to rendering frames to a screen; the Z2 GPU has a USB Type-C output and a full graphics pipeline. The data does not present either as superior, only as specialized for different tasks. The MI308X was released on 2023-12-05T17:00:00.000Z, while the Ryzen Z2 GPU was released on 2024-12-31T17:00:00.000Z and is marked as active production. The MI308X lists no production status. The MI308X uses a 5 nm process and the Z2 GPU uses a 4 nm process, both from TSMC. Neither part has a launch MSRP recorded in the database.