AMD Instinct MI308X vs AMD Ryzen Z2 Go GPU Comparison

Head-to-Head Benchmarks

The recorded data contains no benchmark scores for either the AMD Instinct MI308X or the AMD Ryzen Z2 Go GPU. Both processors hold a database percentile ranking of 50 against all GPUs, with an average benchmark score of zero for each. Consequently, no direct performance comparison can be derived from the measurements, and neither unit claims a win in any head-to-head contest. The absence of synthetic or real-world test results means any assessment of relative speed must rely entirely on architectural specifications rather than empirical outcomes.

The MI308X presents a raw compute specification that is dramatically higher on paper. Its FP32 throughput is listed at 81.72 TFLOPS, while the Z2 Go GPU delivers 4.147 TFLOPS. This represents a nominal difference of roughly 19.7 times in favor of the Instinct part, assuming both operate at their stated peak rates. However, the FP16 figures illustrate a divergence in design priorities: the MI308X achieves 81.72 TFLOPS in FP16 with a 1:1 ratio, whereas the Z2 Go GPU reaches 8.294 TFLOPS with a 2:1 ratio, meaning its FP16 rate is double its FP32 rate. The texture rate follows a similar pattern, with the MI308X posting 2,553.6 GTexel/s against 129.6 GTexel/s for the Z2 Go GPU, again a factor of nearly 20. Pixel rate data is incomplete for the MI308X, recorded as 0 MPixel/s due to its lack of ROPs, while the Z2 Go GPU manages 86.40 GPixel/s with 32 ROPs.

Memory bandwidth tells a stark story. The MI308X uses 192 GB of HBM3 over an 8192-bit bus, yielding 5.32 TB/s. The Z2 Go GPU uses 16 GB of LPDDR5 over a 128-bit bus, producing 102.4 GB/s. The bandwidth ratio is approximately 52 to 1, which dwarfs the compute ratio and indicates that the Instinct part is engineered for datasets that would saturate the smaller memory subsystem instantly. Clock behavior also differs: the MI308X has a base of 1000 MHz and a boost of 2100 MHz, while the Z2 Go GPU runs at 800 MHz base and 2700 MHz boost. The latter has a higher peak clock by 600 MHz, but that advantage does little to close the gap in absolute throughput.

Architecture Differences

The two chips belong to separate architectural families with distinct goals. The MI308X uses CDNA 3.0, AMD’s compute-oriented design, built on TSMC’s 5 nm process. The Z2 Go GPU uses RDNA 2.0, a graphics-focused architecture, manufactured on TSMC’s 6 nm node. The process node difference is one nanometer, but the transistor counts are vastly different: the MI308X integrates 153,000 million transistors on a 1017 mm² die, giving a density of 150.4 million transistors per square millimeter. The Z2 Go GPU packs 13,100 million transistors into 208 mm², resulting in 63.0 million per square millimeter. The Instinct part therefore uses a denser process and a much larger chip, nearly five times the die area.

Shading unit counts reinforce the divergence. The MI308X has 19,456 shading units, 1,216 TMUs, and zero ROPs. The Z2 Go GPU has 768 shading units, 48 TMUs, and 32 ROPs. The MI308X also omits ray tracing cores entirely, while the Z2 Go GPU includes 12 RT cores. Neither chip lists tensor cores in the database. The MI308X reports no display outputs, no API support (DirectX, OpenGL, and Vulkan are all listed as N/A), and uses an OAM module slot with no power connectors, requiring a suggested 1150 W PSU. The Z2 Go GPU, by contrast, supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and provides a single USB Type-C display output. Its power draw is 28 W, with no suggested PSU listed.

Memory types differ fundamentally. HBM3 on the MI308X is designed for bandwidth density, while LPDDR5 on the Z2 Go GPU prioritizes low power and integration. The MI308X’s memory clock is 1300 MHz with 5.2 Gbps effective data rate; the Z2 Go GPU runs at 800 MHz with 6.4 Gbps effective. Despite the higher effective rate per pin on the smaller chip, the massive bus width difference (8192 vs 128 bits) makes the comparison lopsided. The MI308X also has no production status listed, while the Z2 Go GPU is marked as Active. Release dates place the MI308X in December 2023 and the Z2 Go GPU in late December 2024, roughly a year apart.

Where Each One Wins

The MI308X wins decisively in any workload that demands raw compute throughput and enormous memory bandwidth. Its FP32 and FP16 figures are an order of magnitude higher than the Z2 Go GPU’s, and the 5.32 TB/s bandwidth is suited for large-scale matrix operations, scientific simulation, or AI inference where data movement dominates. The absence of display outputs and graphics APIs confirms that this part is not intended for rendering frames; it exists to process data in bulk. The zero ROP count and lack of pixel rate further underscore that visual output is irrelevant to its function.

The Z2 Go GPU wins in scenarios requiring low power consumption and graphics capability. Its 28 W TDP is a fraction of the MI308X’s 750 W, which matters in compact or battery-powered systems. The inclusion of 12 RT cores and DirectX 12 Ultimate support means it can handle real-time rendering, including ray-traced effects, which the MI308X cannot do at all. The 16 GB LPDDR5 memory, while small compared to 192 GB, is sufficient for gaming or console workloads, and the 86.40 GPixel/s pixel rate indicates it can drive displays. The Z2 Go GPU also has a higher boost clock, 2700 MHz versus 2100 MHz, which helps in latency-sensitive tasks that do not scale with core count.

Neither part has benchmark data to confirm these roles empirically, but the specifications align with their stated generations. The MI308X, part of the Instinct (MIx) series, follows the Radeon Instinct line and targets compute accelerators. The Z2 Go GPU, from the Console GPU generation, inherits RDNA 2.0 traits aimed at interactive graphics. The transistor density difference, 150.4M per mm² versus 63.0M per mm², suggests the MI308X uses a more advanced manufacturing process, but the Z2 Go GPU’s smaller size and lower power envelope make it practical for consumer-facing devices.

FAQ

Q: Which GPU has higher FP32 performance?

A: The AMD Instinct MI308X delivers 81.72 TFLOPS in FP32, whereas the AMD Ryzen Z2 Go GPU provides 4.147 TFLOPS, a nominal difference of about 19.7 times.

Q: Does either GPU support ray tracing?

A: The Z2 Go GPU includes 12 RT cores and supports DirectX 12 Ultimate (12_2), which enables ray-traced rendering. The MI308X has no RT cores and lists no API support.

Q: What is the memory bandwidth difference?

A: The MI308X has 5.32 TB/s bandwidth from 192 GB of HBM3 on an 8192-bit bus. The Z2 Go GPU has 102.4 GB/s from 16 GB of LPDDR5 on a 128-bit bus, a ratio of approximately 52 to 1.

Q: Which GPU consumes less power?

A: The Z2 Go GPU is rated at 28 W TDP, while the MI308X is rated at 750 W TDP. The Z2 Go GPU also has no suggested PSU, whereas the MI308X recommends a 1150 W power supply.

Q: Can the MI308X output video to a display?

A: No. The MI308X lists no display outputs and has zero ROPs, making it unsuitable for driving a monitor. The Z2 Go GPU provides one USB Type-C display output.

Q: Are there any benchmark scores for these GPUs?

A: No. Both GPUs have an average benchmark score of zero and no recorded benchmarks in the database. Their percentile ranking against all GPUs is 50 for each.

Specification Differences

The following fields differ between the two parts:

• Chip: Aqua Vanjaram (MI308X) versus Rembrandt+ (Z2 Go GPU)
• Architecture: CDNA 3.0 versus RDNA 2.0
• Generation: Instinct (MIx) versus Console GPU (AMD)
• Process Node: 5 nm versus 6 nm
• Transistors: 153,000 million versus 13,100 million
• Die Size: 1017 mm² versus 208 mm²
• Transistor Density: 150.4M / mm² versus 63.0M / mm²
• Base Clock: 1000 MHz versus 800 MHz
• Boost Clock: 2100 MHz versus 2700 MHz
• Memory Clock: 1300 MHz 5.2 Gbps effective versus 800 MHz 6.4 Gbps effective
• Memory Size: 192 GB versus 16 GB
• Memory Type: HBM3 versus LPDDR5
• Bus Width: 8192 bit versus 128 bit
• Bandwidth: 5.32 TB/s versus 102.4 GB/s
• Shading Units: 19,456 versus 768
• TMUs: 1,216 versus 48
• ROPs: 0 versus 32
• RT Cores: null versus 12
• Pixel Rate: 0 MPixel/s versus 86.40 GPixel/s
• Texture Rate: 2,553.6 GTexel/s versus 129.6 GTexel/s
• FP32: 81.72 TFLOPS versus 4.147 TFLOPS
• FP16: 81.72 TFLOPS (1:1) versus 8.294 TFLOPS (2:1)
• TDP: 750 W versus 28 W
• Slot Width: OAM Module versus null
• Power Connectors: None versus None (identical, but noted)
• Suggested PSU: 1150 W versus null
• Bus Interface: PCIe 5.0 x16 versus null
• Display Outputs: No outputs versus 1x USB Type-C
• DirectX: N/A versus 12 Ultimate (12_2)
• OpenGL: N/A versus 4.6
• Vulkan: N/A versus 1.4
• Production Status: null versus Active
• Release Date: 2023-12-05 versus 2024-12-31
• Predecessor: Radeon Instinct versus null

The Verdict

The AMD Instinct MI308X is a compute accelerator with no graphics output, built for massive parallel workloads. Its 192 GB HBM3 pool and 5.32 TB/s bandwidth, combined with 81.72 TFLOPS FP32, position it for tasks that require moving and processing terabytes of data. The 750 W TDP and OAM form factor confirm it belongs in a server chassis, not a desktop. Users with scientific computing, large-scale inference, or simulation needs would select this part based on its raw specifications.

The AMD Ryzen Z2 Go GPU is a low-power graphics processor with 28 W TDP, 12 RT cores, and full API support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Its 16 GB LPDDR5 memory and 102.4 GB/s bandwidth are modest, but the 2700 MHz boost clock and 86.40 GPixel/s pixel rate suit interactive rendering. The single USB Type-C output and Active production status indicate a chip ready for embedded or console-style use. Buyers seeking a compact, display-capable GPU with ray tracing support would choose this part.

The data shows no overlap in intended use cases. The MI308X cannot render frames, and the Z2 Go GPU cannot approach the compute scale of the Instinct part. The absence of benchmark scores means no real-world validation exists in the database, but the architectural gaps are so wide that a cross-purpose comparison is moot. Select based on workload: raw throughput for the MI308X, graphics and efficiency for the Z2 Go GPU.