AMD Instinct MI300X vs AMD Ryzen Z2 GPU Comparison

Where Each One Wins

The AMD Instinct MI300X and the AMD Ryzen Z2 GPU occupy entirely different segments of the accelerator spectrum, and the recorded data confirms that they are not direct competitors. The MI300X is a data center compute accelerator with a single Geekbench OpenCL score of 317,994, placing it in the 100th percentile among all GPUs in the database. The Ryzen Z2 GPU, by contrast, has no recorded benchmark scores and sits at the 50th percentile, indicating that it is positioned as a mid-range integrated graphics solution rather than a high-performance compute device.

The MI300X wins decisively in raw compute throughput. Its FP32 performance is recorded at 81.72 TFLOPS, while the Ryzen Z2 GPU delivers 8.294 TFLOPS. The MI300X also leads in texture rate with 2,553.6 GTexel/s versus 129.6 GTexel/s for the Ryzen Z2 GPU. Memory bandwidth is another area of complete dominance: the MI300X provides 5.32 TB/s across an 8192-bit HBM3 interface, while the Ryzen Z2 GPU manages 119.9 GB/s over a 128-bit LPDDR5X bus. These are not incremental differences; they represent orders of magnitude in memory throughput and shading capability.

The Ryzen Z2 GPU, however, wins in areas that matter for its intended use case. It is built on a 4 nm process from TSMC, compared to the 5 nm process used by the MI300X. The Ryzen Z2 GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the MI300X reports N/A for all three graphics APIs. The Ryzen Z2 GPU also has a display output, specifically one USB Type-C port, whereas the MI300X has no display outputs at all. The Ryzen Z2 GPU includes 12 ray tracing cores and 32 ROPs, while the MI300X lists 0 ROPs and no RT core count. For rendering workloads that rely on rasterization or ray tracing, the Ryzen Z2 GPU is the only one of the two with functional support.

Power consumption is another clear split. The MI300X has a TDP of 750 W and a suggested PSU of 1150 W, while the Ryzen Z2 GPU operates at 28 W. The Ryzen Z2 GPU also uses a smaller die, 178 mm² versus 1017 mm², and far fewer transistors, 25,390 million versus 153,000 million. The MI300X is a board-level OAM module with no power connectors listed, while the Ryzen Z2 GPU is an integrated-class part with no power connector requirement.

The Verdict

The data indicates that the MI300X is built exclusively for maximum compute throughput in server environments. Its 100th percentile ranking, 192 GB of HBM3 memory, and 81.72 TFLOPS FP32 performance place it among the fastest accelerators in the database. Its nearest rivals include the NVIDIA B200 with an average score of 345,482 (8% higher), the NVIDIA H200 NVL at 334,891 (5% higher), the NVIDIA L40S at 295,763 (7.5% lower), and the NVIDIA RTX 6000 Ada Generation at 287,237 (10.7% lower). The MI300X trails the B200 and H200 NVL but leads the L40S and RTX 6000 Ada by the margins listed.

The Ryzen Z2 GPU is a different product category entirely. With no benchmark scores recorded, its 50th percentile ranking reflects the absence of measured performance data rather than a poor result. Its feature set, including DirectX 12 Ultimate support, ray tracing cores, and a display output, aligns with consumer or embedded graphics workloads. The 28 W TDP and 16 GB LPDDR5X memory suggest a low-power integrated solution, not a compute accelerator.

For compute-heavy workloads such as AI training, scientific simulation, or large-scale matrix operations, the MI300X is the only viable choice from the recorded data. Its FP32 and FP16 performance are both rated at 81.72 TFLOPS, and its 5.32 TB/s memory bandwidth is unmatched by the Ryzen Z2 GPU. For graphics rendering, ray tracing, or any workload requiring a display output, the Ryzen Z2 GPU is the appropriate part. The MI300X cannot render to a screen, has no graphics API support, and lacks rasterization hardware. The two products do not overlap in function.

Head-to-Head Benchmarks

The head-to-head benchmark list is empty, so direct comparisons rely on the individual recorded scores and specifications. The MI300X has a Geekbench OpenCL score of 317,994, while the Ryzen Z2 GPU has no recorded benchmark score. This absence of data prevents a direct numerical comparison, but the specification differences are substantial.

The MI300X delivers 81.72 TFLOPS of FP32 compute, which is 9.85 times the 8.294 TFLOPS of the Ryzen Z2 GPU. Texture rate shows a similar ratio: 2,553.6 GTexel/s versus 129.6 GTexel/s. Memory bandwidth is the most lopsided specification: 5.32 TB/s versus 119.9 GB/s, a factor of roughly 44. The MI300X also has 19,456 shading units against 768 for the Ryzen Z2 GPU, and 1,216 texture mapping units against 48. The Ryzen Z2 GPU has 32 ROPs, while the MI300X lists 0, meaning the MI300X cannot perform pixel output at all. Pixel rate for the MI300X is recorded as 0 MPixel/s, while the Ryzen Z2 GPU manages 86.40 GPixel/s.

In relative terms, the MI300X is 7.5% faster than the NVIDIA L40S and 10.7% faster than the NVIDIA RTX 6000 Ada Generation in the recorded Geekbench OpenCL test. It is 5% slower than the NVIDIA H200 NVL and 8% slower than the NVIDIA B200. These deltas frame the MI300X's position among data center accelerators. The Ryzen Z2 GPU has no comparable rival data in the database, so its relative standing cannot be quantified.

Clock speeds differ in a way that reflects their design goals. The MI300X 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 Ryzen Z2 GPU's higher boost clock is typical of a consumer-oriented part, while the MI300X relies on massive parallelism rather than high clock frequencies. Memory clocks also differ: the MI300X runs at 1300 MHz with 5.2 Gbps effective, while the Ryzen Z2 GPU runs at 937 MHz with 7.5 Gbps effective.

FAQ

Q: Which GPU has the higher FP32 compute performance?

A: The AMD Instinct MI300X is rated at 81.72 TFLOPS FP32, while the AMD Ryzen Z2 GPU is rated at 8.294 TFLOPS FP32. The MI300X is approximately 9.85 times faster in this metric.

Q: Does the Ryzen Z2 GPU support ray tracing?

A: Yes, the Ryzen Z2 GPU includes 12 ray tracing cores. The MI300X does not list any ray tracing cores in the database.

Q: Which GPU has more memory bandwidth?

A: The MI300X provides 5.32 TB/s of bandwidth via an 8192-bit HBM3 interface. The Ryzen Z2 GPU provides 119.9 GB/s via a 128-bit LPDDR5X interface. The MI300X's bandwidth is roughly 44 times higher.

Q: Can the MI300X output video to a display?

A: No, the MI300X lists no display outputs and a pixel rate of 0 MPixel/s. The Ryzen Z2 GPU has one USB Type-C display output and a pixel rate of 86.40 GPixel/s.

Q: What is the power consumption difference?

A: The MI300X 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.

Q: How does the MI300X compare to NVIDIA data center GPUs?

A: In the Geekbench OpenCL test, the MI300X scores 317,994. The NVIDIA B200 scores 345,482 (8% higher), the NVIDIA H200 NVL scores 334,891 (5% higher), the NVIDIA L40S scores 295,763 (7.5% lower), and the NVIDIA RTX 6000 Ada Generation scores 287,237 (10.7% lower).

Architecture Differences

The MI300X and Ryzen Z2 GPU differ fundamentally in architecture, process technology, and intended role. The MI300X uses the CDNA 3.0 architecture on a chip codenamed Aqua Vanjaram, fabricated by TSMC on a 5 nm process. The Ryzen Z2 GPU uses the RDNA 3.0 architecture on a chip codenamed Hawk Point, fabricated by TSMC on a 4 nm process. The MI300X belongs to the Instinct (MIx) generation, while the Ryzen Z2 GPU belongs to the Console GPU (AMD) generation.

The MI300X has 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4 million per mm². The Ryzen Z2 GPU has 25,390 million transistors on a 178 mm² die, yielding 142.6 million per mm². The MI300X is a far larger and more complex device, with over six times the die area and roughly six times the transistor count.

Memory architecture is completely different. The MI300X uses 192 GB of HBM3 with an 8192-bit bus width and 5.32 TB/s bandwidth. The Ryzen Z2 GPU uses 16 GB of LPDDR5X with a 128-bit bus width and 119.9 GB/s bandwidth. The MI300X's memory clock is 1300 MHz with 5.2 Gbps effective, while the Ryzen Z2 GPU's memory clock is 937 MHz with 7.5 Gbps effective.

The compute pipelines diverge sharply. The MI300X has 19,456 shading units, 1,216 TMUs, and 0 ROPs, with no RT core count listed. The Ryzen Z2 GPU has 768 shading units, 48 TMUs, 32 ROPs, and 12 RT cores. The MI300X reports FP32 and FP16 performance at identical rates of 81.72 TFLOPS with a 1:1 ratio, while the Ryzen Z2 GPU reports 8.294 TFLOPS for both FP32 and FP16.

API support is another major difference. The MI300X lists DirectX, OpenGL, and Vulkan as N/A, indicating it is not intended for graphics workloads. The Ryzen Z2 GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300X has no display outputs, while the Ryzen Z2 GPU has one USB Type-C output.

The bus interface also differs. The MI300X uses PCIe 5.0 x16, while the Ryzen Z2 GPU has no bus interface listed. The MI300X is an OAM module with no power connectors, while the Ryzen Z2 GPU also has no power connectors listed. The MI300X was released on December 5, 2023, and its predecessor is listed as Radeon Instinct. The Ryzen Z2 GPU was released on December 31, 2024, has no predecessor listed, and its production status is Active.