AMD Radeon Instinct MI300X vs AMD Ryzen Z2 GPU Comparison

Head-to-Head Benchmarks

The recorded database contains no direct benchmark scores for either the AMD Radeon Instinct MI300X or the AMD Ryzen Z2 GPU. Both parts show an average benchmark score of zero, and the head-to-head benchmark list is empty. Consequently, there are no measured performance deltas, no percentile differences, and no rival comparisons to cite. The absence of data means that any numerical comparison between these two accelerators must rely entirely on the specification fields provided, not on observed workload results.

The MI300X reports 81.72 TFLOPS of FP32 compute, while the Ryzen Z2 GPU reports 8.294 TFLOPS. That is a ratio of approximately 9.85 to 1 in raw FP32 throughput. In FP16, the difference widens dramatically: the MI300X delivers 653.7 TFLOPS with an 8:1 ratio, whereas the Ryzen Z2 GPU delivers 8.294 TFLOPS at a 1:1 ratio. The MI300X thus carries roughly 78 times the FP16 throughput on paper, though the differing precision architectures make a direct equivalence imprecise.

Memory capacity and bandwidth show equally large gaps. The MI300X features 192 GB of HBM3 on an 8192-bit bus, yielding 10.3 TB/s of bandwidth. The Ryzen Z2 GPU has 16 GB of LPDDR5X on a 128-bit bus, yielding 119.9 GB/s. The MI300X provides 12 times the capacity and roughly 86 times the bandwidth. Texture rate also favors the larger part: 2,553.6 GTexel/s against 129.6 GTexel/s, a factor of about 19.7. Pixel rate is the one specification where the smaller chip does not report zero: the Ryzen Z2 GPU posts 86.40 GPixel/s, while the MI300X reports 0 MPixel/s as its pixel rate, reflecting its lack of traditional ROP output.

The percentile versus all GPUs is listed as 50 for both parts, but with no benchmark inputs behind that figure, the metric carries no comparative weight here. The wins counters for each item are both zero.

FAQ

Q: Which GPU has the higher FP32 compute throughput?

A: The AMD Radeon Instinct MI300X reports 81.72 TFLOPS of FP32, versus 8.294 TFLOPS for the AMD Ryzen Z2 GPU. The MI300X is roughly 9.85 times higher in this specification.

Q: How do the memory subsystems compare?

A: The MI300X uses 192 GB of HBM3 over an 8192-bit bus with 10.3 TB/s of bandwidth. The Ryzen Z2 GPU uses 16 GB of LPDDR5X over a 128-bit bus with 119.9 GB/s of bandwidth. The MI300X leads in capacity by 12 times and in bandwidth by approximately 86 times.

Q: Which part has a higher boost clock?

A: The Ryzen Z2 GPU boosts to 2700 MHz, while the MI300X boosts to 2100 MHz. The Ryzen Z2 GPU also has a lower base clock at 800 MHz versus 1000 MHz on the MI300X.

Q: Do both GPUs support the same API feature set?

A: No. The Ryzen Z2 GPU lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300X lists no DirectX, OpenGL, or Vulkan versions in the database, consistent with a compute-oriented part with no display outputs.

Q: What are the thermal design power figures?

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: Which GPU has ray tracing cores?

A: The Ryzen Z2 GPU includes 12 ray tracing cores. The MI300X lists no ray tracing core count in the database.

Architecture Differences

The MI300X is built on the CDNA 3.0 architecture with the Aqua Vanjaram chip, while the Ryzen Z2 GPU uses the RDNA 3.0 architecture with the Hawk Point chip. These are different design families from AMD: CDNA targets data center compute acceleration, RDNA targets graphics and consumer workloads. The process nodes differ as well. The MI300X uses TSMC's 5 nm process, and the Ryzen Z2 GPU uses TSMC's 4 nm process.

Transistor counts reflect the scale gap. The MI300X contains 153,000 million transistors on a 1017 mm² die. The Ryzen Z2 GPU contains 25,390 million transistors on a 178 mm² die. Transistor density is close: 150.4 million per mm² for the MI300X versus 142.6 million per mm² for the Ryzen Z2 GPU. The MI300X is roughly six times the die area and carries about six times the transistor count.

The MI300X has 19,456 shading units and 1,216 texture mapping units, with zero ROPs. The Ryzen Z2 GPU has 768 shading units, 48 texture mapping units, and 32 ROPs. The MI300X also lacks a listed RT core count, while the Ryzen Z2 GPU includes 12 RT cores. Neither part lists tensor cores in the database.

Memory architecture differs fundamentally. The MI300X uses HBM3 with a 8192-bit bus, while the Ryzen Z2 GPU uses LPDDR5X with a 128-bit bus. The MI300X has no display outputs, while the Ryzen Z2 GPU includes one USB Type-C output. The MI300X uses a PCIe 5.0 x16 bus interface, while the Ryzen Z2 GPU has no bus interface listed. The MI300X is an OAM module form factor, whereas the Ryzen Z2 GPU has no slot width listed.

Specification Differences

The two parts differ across nearly every major specification field in the database.

Clock speeds: the MI300X has a base clock of 1000 MHz and a boost clock of 2100 MHz. The Ryzen Z2 GPU has a base clock of 800 MHz and a boost clock of 2700 MHz. Memory clocks also differ: the MI300X runs at 2525 MHz with 10.1 Gbps effective, while the Ryzen Z2 GPU runs at 937 MHz with 7.5 Gbps effective.

Memory: the MI300X has 192 GB of HBM3, an 8192-bit bus, and 10.3 TB/s bandwidth. The Ryzen Z2 GPU has 16 GB of LPDDR5X, a 128-bit bus, and 119.9 GB/s bandwidth.

Compute units: the MI300X has 19,456 shading units, 1,216 TMUs, and 0 ROPs. The Ryzen Z2 GPU has 768 shading units, 48 TMUs, and 32 ROPs. The Ryzen Z2 GPU has 12 RT cores; the MI300X has no RT core count listed.

Performance rates: the MI300X reports 0 MPixel/s pixel rate and 2,553.6 GTexel/s texture rate. The Ryzen Z2 GPU reports 86.40 GPixel/s pixel rate and 129.6 GTexel/s texture rate. FP32 is 81.72 TFLOPS for the MI300X and 8.294 TFLOPS for the Ryzen Z2 GPU. FP16 is 653.7 TFLOPS (8:1) for the MI300X and 8.294 TFLOPS (1:1) for the Ryzen Z2 GPU.

Power: 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.

Physical and interface: the MI300X is an OAM Module with no power connectors listed, while the Ryzen Z2 GPU has no slot width and no power connectors listed. The MI300X uses PCIe 5.0 x16; the Ryzen Z2 GPU has no bus interface listed. Display outputs: the MI300X has none, the Ryzen Z2 GPU has one USB Type-C.

API support: the MI300X lists no DirectX, OpenGL, or Vulkan versions. The Ryzen Z2 GPU lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Production status: the MI300X has no production status listed, while the Ryzen Z2 GPU is marked Active. Release dates differ: the MI300X was released on 2023-12-05, the Ryzen Z2 GPU on 2024-12-31. The MI300X lists a predecessor of FirePro Data Center; the Ryzen Z2 GPU has no predecessor listed.

Where Each One Wins

The MI300X wins decisively in raw compute throughput, memory capacity, memory bandwidth, texture rate, and transistor scale. Its 81.72 TFLOPS FP32 and 653.7 TFLOPS FP16 figures position it as a data center compute accelerator. The 192 GB HBM3 pool with 10.3 TB/s bandwidth suits large model residency and high-bandwidth access patterns. The 19,456 shading units and 1,216 TMUs provide massive parallel throughput for dense workloads. The 750 W TDP and 1150 W suggested PSU indicate a system-level component designed for sustained heavy compute.

The Ryzen Z2 GPU wins in specific categories that matter for graphics and client workloads. It has a higher boost clock at 2700 MHz, meaning higher per-core frequency potential. It has 32 ROPs versus zero, so it can produce rasterized output. It includes 12 RT cores, enabling ray tracing workloads that the MI300X does not list. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI300X lists no graphics APIs. It has one USB Type-C display output, making it usable in a client display path. Its 28 W TDP is far lower than the MI300X's 750 W, and its 4 nm process node is one step smaller than the MI300X's 5 nm node. Its 86.40 GPixel/s pixel rate confirms a functional graphics pipeline.

The two parts do not compete in the same product class. The MI300X is a compute module with no display outputs and no graphics API support, built for server acceleration. The Ryzen Z2 GPU is a low-power graphics processor with display output and full graphics API support, built for embedded or console-style use. Benchmark data does not currently resolve their relative performance in shared workloads, so the specification split above is the only quantifiable comparison available.