AMD Radeon Instinct MI300A vs AMD Ryzen Z2 GPU Comparison

Head-to-Head Benchmarks

The recorded data contains no direct benchmark scores for either the AMD Radeon Instinct MI300A or the AMD Ryzen Z2 GPU. Both entries show an average benchmark score of 0, and the head-to-head benchmark list is empty. This means the usual method of comparing frame rates, compute scores, or synthetic test results cannot be applied here.

What the database does provide is the raw specification data for each part, and that data reveals an extraordinary performance gulf. The MI300A delivers 81.72 TFLOPS of FP32 compute, while the Ryzen Z2 GPU delivers 8.294 TFLOPS. That is a ratio of roughly 9.85 to 1 in favor of the Instinct part. The gap is even larger in FP16 work: the MI300A achieves 653.7 TFLOPS using an 8:1 ratio, whereas the Ryzen Z2 GPU manages 8.294 TFLOPS at a 1:1 ratio. The Instinct accelerator is built for a completely different performance class.

Texture throughput tells the same story. The MI300A sustains 2,553.6 GTexel/s, against 129.6 GTexel/s for the Ryzen Z2 GPU. Pixel rate is the one metric where the smaller part wins outright: the Ryzen Z2 GPU records 86.40 GPixel/s, while the MI300A lists 0 MPixel/s. This is not a sign of weakness in the Instinct part; it reflects a design with no conventional raster output pipeline. The MI300A is not intended to drive displays.

Memory bandwidth is another decisive separator. The MI300A uses a 8192-bit bus with HBM3 memory, yielding 10.3 TB/s of bandwidth. The Ryzen Z2 GPU uses a 128-bit bus with LPDDR5X, yielding 119.9 GB/s. The Instinct part has roughly 86 times the memory bandwidth. Capacity differs just as dramatically: 192 GB versus 16 GB. The MI300A also runs its memory at 2525 MHz (10.1 Gbps effective), while the Ryzen Z2 GPU memory runs at 937 MHz (7.5 Gbps effective).

Neither part has recorded benchmark wins in the database, since the wins counters are both 0. The percentile ranking for each is 50, which reflects the absence of benchmark data rather than a meaningful comparison. The specification sheet is the only reliable comparison tool available.

Where Each One Wins

The MI300A wins in every compute-heavy category. FP32 throughput of 81.72 TFLOPS places it in a class suited for dense numerical workloads. FP16 performance of 653.7 TFLOPS, achieved through an 8:1 ratio, indicates a design that can accelerate AI training and inference tasks that tolerate reduced precision. The 192 GB HBM3 pool with 10.3 TB/s bandwidth is sized for large models and datasets that would not fit in a 16 GB frame buffer. Texture rate of 2,553.6 GTexel/s supports heavy shader and texture-bound compute work.

The Ryzen Z2 GPU wins in power efficiency and physical integration. Its 28 W TDP is a fraction of the MI300A's 750 W TDP. This allows it to operate in compact systems without dedicated power connectors, since it draws from the platform. It also includes 12 ray tracing cores, something the MI300A does not list. The Ryzen Z2 GPU provides a display output via 1x USB Type-C, whereas the MI300A has no outputs at all. The Ryzen Z2 GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the MI300A lists no API support in the database.

The Ryzen Z2 GPU also records a pixel rate of 86.40 GPixel/s, confirming it can drive a display and handle conventional graphics workloads. Its 32 ROPs and 48 TMUs are modest numbers, but they exist; the MI300A lists 0 ROPs and 1216 TMUs. The Instinct accelerator's TMU count is enormous, but without ROPs it cannot rasterize in the traditional sense.

The production status also differs. The Ryzen Z2 GPU is listed as Active, while the MI300A has no production status recorded. The Ryzen Z2 GPU was released on 2024-12-31, and the MI300A on 2023-12-05, so the Ryzen part is the newer product by roughly a year.

Architecture Differences

The MI300A uses the CDNA 3.0 architecture and the chip codenamed Aqua Vanjaram. The Ryzen Z2 GPU uses the RDNA 3.0 architecture and the Hawk Point chip. These are two distinct design philosophies from AMD. CDNA 3.0 is a compute-optimized architecture for data center accelerators. RDNA 3.0 is a graphics-optimized architecture for consumer and console-class GPUs.

The manufacturing process differs. The MI300A is built on a 5 nm TSMC node, while the Ryzen Z2 GPU is built on a 4 nm TSMC node. Despite the smaller node, the Ryzen Z2 GPU integrates far fewer transistors: 25,390 million versus 153,000 million. The die sizes reflect this: 178 mm² for Hawk Point versus 1017 mm² for Aqua Vanjaram. Transistor density is similar, 142.6M per mm² for the Ryzen Z2 GPU and 150.4M per mm² for the MI300A, but the MI300A's massive die allows far more silicon for compute units.

Shader resources differ by an order of magnitude. The MI300A has 19,456 shading units and 1,216 TMUs. The Ryzen Z2 GPU has 768 shading units and 48 TMUs. The MI300A has no listed ROPs, no listed ray tracing cores, and no listed tensor cores. The Ryzen Z2 GPU has 32 ROPs and 12 ray tracing cores. The absence of RT cores on the MI300A is notable; the database lists none, indicating ray tracing is not part of its feature set.

Clock speeds tell a different story. The Ryzen Z2 GPU has a boost clock of 2700 MHz and a base clock of 800 MHz. The MI300A has a boost clock of 2100 MHz and a base clock of 1000 MHz. The Ryzen part boosts 600 MHz higher, which helps it extract more per-shader performance, but the sheer shader count of the MI300A overwhelms that advantage.

Memory architecture is fundamentally different. The MI300A uses HBM3 with an 8192-bit bus. The Ryzen Z2 GPU uses LPDDR5X with a 128-bit bus. HBM3 is stacked memory designed for bandwidth; LPDDR5X is a low-power memory designed for mobile and embedded use. The MI300A's 192 GB capacity is 12 times the Ryzen Z2 GPU's 16 GB.

The form factors differ completely. The MI300A is an OAM Module with no power connectors and no display outputs. It requires a suggested PSU of 1150 W. The Ryzen Z2 GPU uses no separate power connectors, lists no PSU recommendation, and provides a USB Type-C display output. The MI300A connects via PCIe 5.0 x16; the Ryzen Z2 GPU lists no bus interface in the database.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The AMD Radeon Instinct MI300A delivers 81.72 TFLOPS, compared to 8.294 TFLOPS for the AMD Ryzen Z2 GPU.

Q: Can the MI300A output video to a display?

A: No. The MI300A has no display outputs and lists a pixel rate of 0 MPixel/s. The Ryzen Z2 GPU provides a 1x USB Type-C output and a pixel rate of 86.40 GPixel/s.

Q: How much memory does each GPU have?

A: The MI300A has 192 GB of HBM3 memory on an 8192-bit bus. The Ryzen Z2 GPU has 16 GB of LPDDR5X memory on a 128-bit bus.

Q: Does either GPU support ray tracing?

A: The Ryzen Z2 GPU includes 12 ray tracing cores. The MI300A lists no ray tracing cores in the database.

Q: Which GPU uses more power?

A: The MI300A 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 PSU recommendation.

Q: What API support does each GPU list?

A: The Ryzen Z2 GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300A lists no DirectX, OpenGL, or Vulkan support in the database.

The Verdict

The data shows two products with almost no overlap in purpose. The AMD Radeon Instinct MI300A is a data center accelerator. Its 81.72 TFLOPS FP32, 653.7 TFLOPS FP16, 192 GB HBM3, and 10.3 TB/s bandwidth place it squarely in compute and AI workloads. It has no display outputs, no raster pipeline, and no consumer API support. It draws 750 W and requires a system with a 1150 W PSU. Anyone needing to train large models, run HPC simulations, or process massive datasets in memory should select the MI300A.

The AMD Ryzen Z2 GPU is a low-power graphics processor. Its 28 W TDP, 16 GB LPDDR5X memory, and 8.294 TFLOPS FP32 make it suitable for compact systems. It includes 12 ray tracing cores, supports modern graphics APIs, and outputs video through USB Type-C. Its 86.40 GPixel/s pixel rate confirms it can handle conventional rendering. Anyone building a small form factor system, a handheld, or an embedded graphics solution should select the Ryzen Z2 GPU.

The MI300A wins on raw compute, memory capacity, memory bandwidth, and texture throughput. The Ryzen Z2 GPU wins on power consumption, ray tracing, display output, API support, and production status. Neither part is a substitute for the other. The choice depends entirely on whether the workload is compute-heavy data center processing or low-power graphics rendering.

The Ryzen Z2 GPU is listed as Active in production, while the MI300A has no recorded production status. The MI300A released on 2023-12-05, and the Ryzen Z2 GPU on 2024-12-31. The newer part is the lower-power one. The older part is the higher-performance one. The database records no benchmark scores for either, so the verdict rests on the specification differences.

For buyers, the decision is straightforward. Data center operators needing massive compute and memory bandwidth should use the MI300A. System integrators needing a compact, low-power GPU with display output and ray tracing should use the Ryzen Z2 GPU. The two parts serve different markets, and the specification sheet makes that clear.

Specification Differences

| Specification | AMD Radeon Instinct MI300A | AMD Ryzen Z2 GPU |

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

| Architecture | CDNA 3.0 | RDNA 3.0 |

| Chip | Aqua Vanjaram | Hawk Point |

| 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 | 2525 MHz (10.1 Gbps effective) | 937 MHz (7.5 Gbps effective) |

| Memory Size | 192 GB | 16 GB |

| Memory Type | HBM3 | LPDDR5X |

| Memory Bus | 8192 bit | 128 bit |

| Memory Bandwidth | 10.3 TB/s | 119.9 GB/s |

| Shading Units | 19456 | 768 |

| TMUs | 1216 | 48 |

| ROPs | 0 | 32 |

| Ray Tracing 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 | 653.7 TFLOPS (8:1) | 8.294 TFLOPS (1:1) |

| TDP | 750 W | 28 W |

| Slot Width | OAM Module | Not listed |

| Power Connectors | None | None |

| Suggested PSU | 1150 W | Not listed |

| Bus Interface | PCIe 5.0 x16 | Not listed |

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

| DirectX | Not listed | 12 Ultimate (12_2) |

| OpenGL | Not listed | 4.6 |

| Vulkan | Not listed | 1.4 |

| Production Status | Not listed | Active |

| Release Date | 2023-12-05 | 2024-12-31 |