AMD Instinct MI300 vs AMD Ryzen Z2 A GPU Comparison

The Verdict

The recorded data places these two AMD GPUs at opposite ends of the compute spectrum. The Instinct MI300 is a data-center accelerator built for massive parallel throughput, while the Ryzen Z2 A GPU is a low-power embedded graphics solution. The MI300 delivers 47.87 TFLOPS FP32 against the Z2 A's 1.638 TFLOPS, a 29.2x advantage in raw single-precision compute. The MI300 also carries 128 GB of HBM3 memory with 5.32 TB/s bandwidth, compared to 16 GB of LPDDR5 at 102.4 GB/s. Neither part has benchmark scores in the database, so percentile placement is neutral at 50 for both. The choice depends entirely on workload: the MI300 for high-throughput compute tasks, the Z2 A for power-constrained graphics output. The Z2 A is the only one with display outputs (1x USB Type-C) and API support (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4), while the MI300 has no display outputs and no API support listed.

Architecture Differences

The two chips share a manufacturer but diverge completely in design philosophy. The Instinct MI300 uses the CDNA 3.0 architecture on TSMC's 5 nm process, with the Aqua Vanjaram chip. It integrates 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4M per mm². The Ryzen Z2 A GPU uses the RDNA 2.0 architecture on TSMC's 7 nm process, with the Van Gogh chip. It packs 2,400 million transistors on a 163 mm² die, for a density of 14.7M per mm². The MI300's die is 6.2x larger and carries 63.8x more transistors.

The MI300 has 14,080 shading units, 880 texture mapping units, and 0 ROPs. It has no ray tracing cores and no tensor cores listed. The Z2 A has 512 shading units, 32 TMUs, 16 ROPs, and 8 ray tracing cores. The MI300's FP16 throughput is 47.87 TFLOPS with a 1:1 ratio to FP32, indicating no dedicated half-rate path. The Z2 A's FP16 is 3.277 TFLOPS with a 2:1 ratio, meaning it doubles FP32 throughput for half-precision work. The MI300's pixel rate is 0 MPixel/s, while the Z2 A manages 25.60 GPixel/s. Texture rates are 1,496.0 GTexel/s for the MI300 and 51.20 GTexel/s for the Z2 A, a 29.2x difference.

Memory architecture differs fundamentally. The MI300 uses HBM3 with an 8192-bit bus and 5.32 TB/s bandwidth. The Z2 A uses LPDDR5 with a 128-bit bus and 102.4 GB/s bandwidth. The MI300's memory bus is 64x wider, and its bandwidth is 52x higher. The Z2 A has 8 ray tracing cores, a feature absent from the MI300's specifications. The MI300 uses 2x 8-pin power connectors and requires a 1000 W suggested PSU, while the Z2 A lists no power connectors and no PSU requirement. The MI300's TDP is 600 W, the Z2 A's is 15 W, a 40x difference.

Where Each One Wins

The MI300 dominates in every compute-heavy metric. Its FP32 performance of 47.87 TFLOPS suits large-scale scientific computing, AI training, and simulation workloads. The 128 GB HBM3 pool with 5.32 TB/s bandwidth allows handling datasets far beyond the Z2 A's 16 GB LPDDR5 at 102.4 GB/s. The MI300's texture rate of 1,496.0 GTexel/s enables high-throughput texture processing, though its 0 MPixel/s pixel rate and lack of display outputs indicate it is not intended for direct rendering to a screen.

The Z2 A wins in power efficiency and graphics output capability. At 15 W TDP, it consumes 2.5% of the MI300's power budget. It delivers 25.60 GPixel/s pixel throughput and supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Its 8 ray tracing cores provide hardware-accelerated ray tracing, which the MI300 lacks. The Z2 A's 1x USB Type-C display output makes it suitable for embedded or handheld graphics tasks. Its 16 GB memory, while small compared to the MI300, is adequate for console-class workloads. The Z2 A's FP16 rate of 3.277 TFLOPS at 2:1 ratio gives it a half-precision boost that the MI300 does not offer, since the MI300 runs FP16 at 1:1 with FP32.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The Instinct MI300 delivers 47.87 TFLOPS FP32, which is 29.2x higher than the Ryzen Z2 A GPU's 1.638 TFLOPS.

Q: Does the MI300 support ray tracing?

A: No. The MI300 lists no ray tracing cores, while the Z2 A has 8 ray tracing cores.

Q: What memory configurations do the two GPUs use?

A: The MI300 uses 128 GB of HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The Z2 A uses 16 GB of LPDDR5 on a 128-bit bus with 102.4 GB/s bandwidth.

Q: Which GPU can output to a display?

A: Only the Ryzen Z2 A GPU has display outputs, listing 1x USB Type-C. The MI300 has no display outputs.

Q: What is the power consumption difference?

A: The MI300 has a TDP of 600 W and suggests a 1000 W PSU. The Z2 A has a TDP of 15 W and lists no PSU requirement.

Q: Which GPU supports DirectX?

A: The Z2 A supports DirectX 12 Ultimate (12_2). The MI300 lists DirectX as N/A.

Head-to-Head Benchmarks

No direct head-to-head benchmark scores exist in the database for these two parts. However, the specification data provides clear deltas. The MI300's FP32 throughput of 47.87 TFLOPS versus 1.638 TFLOPS for the Z2 A represents a 29.2x advantage. In FP16, the MI300's 47.87 TFLOPS compares to the Z2 A's 3.277 TFLOPS, a 14.6x lead, though the Z2 A achieves this via a 2:1 ratio while the MI300 uses 1:1.

Memory bandwidth shows the largest gap. The MI300's 5.32 TB/s is 52x higher than the Z2 A's 102.4 GB/s. Texture fill rate favors the MI300 at 1,496.0 GTexel/s versus 51.20 GTexel/s, a 29.2x difference. The Z2 A wins in pixel throughput: 25.60 GPixel/s versus 0 MPixel/s for the MI300. Transistor count differs by 63.8x (153,000 million versus 2,400 million), and die size by 6.2x (1017 mm² versus 163 mm²). The MI300's transistor density of 150.4M per mm² is 10.2x higher than the Z2 A's 14.7M per mm².

The Z2 A's 8 ray tracing cores give it a feature the MI300 does not list. The MI300's 880 TMUs compare to 32 for the Z2 A, a 27.5x difference. Shading units are 14,080 versus 512, a 27.5x difference. Both GPUs share a 1000 MHz base clock, but the MI300 boosts to 1700 MHz while the Z2 A boosts to 1600 MHz. Memory clocks differ: the MI300 runs at 1300 MHz (5.2 Gbps effective), the Z2 A at 800 MHz (6.4 Gbps effective). The MI300 uses PCIe 5.0 x16; the Z2 A lists no bus interface.

Specification Differences

The two GPUs differ across nearly every specification field. The MI300 uses a 5 nm process, the Z2 A uses 7 nm. The MI300's chip is Aqua Vanjaram, the Z2 A's is Van Gogh. Architecture is CDNA 3.0 versus RDNA 2.0. Transistors are 153,000 million versus 2,400 million. Die size is 1017 mm² versus 163 mm². Transistor density is 150.4M per mm² versus 14.7M per mm².

Base clocks match at 1000 MHz, but boost clocks differ: 1700 MHz for the MI300, 1600 MHz for the Z2 A. Memory clock is 1300 MHz (5.2 Gbps effective) versus 800 MHz (6.4 Gbps effective). Memory size is 128 GB HBM3 versus 16 GB LPDDR5. Bus width is 8192 bit versus 128 bit. Bandwidth is 5.32 TB/s versus 102.4 GB/s.

Shading units are 14,080 versus 512. TMUs are 880 versus 32. ROPs are 0 versus 16. Ray tracing cores are null versus 8. Pixel rate is 0 MPixel/s versus 25.60 GPixel/s. Texture rate is 1,496.0 GTexel/s versus 51.20 GTexel/s. FP32 is 47.87 TFLOPS versus 1.638 TFLOPS. FP16 is 47.87 TFLOPS (1:1) versus 3.277 TFLOPS (2:1).

TDP is 600 W versus 15 W. Power connectors are 2x 8-pin versus none. Suggested PSU is 1000 W versus none. Bus interface is PCIe 5.0 x16 versus none. Display outputs are none versus 1x USB Type-C. DirectX is N/A versus 12 Ultimate (12_2). OpenGL is N/A versus 4.6. Vulkan is N/A versus 1.4.

Dimensions: the MI300 is 267 mm long and 111 mm high; the Z2 A has no listed dimensions. The MI300's production status is null; the Z2 A is active. Release dates differ: the MI300 launched 2023-01-03, the Z2 A on 2024-12-31. The MI300's predecessor is Radeon Instinct; the Z2 A has no predecessor. Neither has a successor or launch MSRP in the database.