AMD Radeon 820M vs AMD Radeon Instinct MI308X Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark results for the AMD Radeon 820M versus the AMD Radeon Instinct MI308X. Neither GPU has an average benchmark score listed, and no benchmark arrays populate their respective profiles. Both cards sit at the 50th percentile among all GPUs in the database, though this figure carries limited meaning without actual test data attached.

What the data does show is a stark separation in compute capability. The Radeon 820M delivers 716.8 GFLOPS of FP32 throughput, while the Instinct MI308X produces 81.72 TFLOPS. That places the MI308X roughly 114 times ahead in single-precision floating-point work, a gap that reflects their entirely different market positions. In FP16, the divergence widens further: the 820M manages 716.8 GFLOPS at a 1:1 ratio, while the MI308X reaches 653.7 TFLOPS using an 8:1 rate. The MI308X outperforms the 820M by a factor of over 900 in half-precision compute.

Texture throughput tells a similar story. The 820M achieves 22.40 GTexel/s with 8 texture mapping units. The MI308X, equipped with 1216 TMUs, produces 2,553.6 GTexel/s, which is about 114 times higher. Pixel rate is the one category where the comparison inverts. The 820M records 11.20 GPixel/s from its 4 ROPs, while the MI308X lists 0 MPixel/s because the Instinct card has no ROP units at all. This is typical for a compute-focused accelerator that does not rasterize traditional graphics workloads.

Without actual benchmark scores or nearest-rival data, the database provides no win counts for either side. The available specifications, however, indicate that the MI308X dominates raw compute metrics, while the 820M holds the edge only in graphics-oriented output stages.

Architecture Differences

The two GPUs come from different architectural families entirely. The Radeon 820M uses RDNA 3.5, built on a 4 nm TSMC process, and belongs to the Navi III IGP generation for Strix Point Mobile. Its chip is designated Krackan Point 2. The Instinct MI308X uses CDNA 3.0, fabricated on a 5 nm TSMC process, and belongs to the Radeon Instinct (MIx) generation. Its chip is named Aqua Vanjaram.

Die size and transistor counts reflect the scale gap. The 820M lists unknown transistor counts and die size, typical for an integrated processor. The MI308X contains 153,000 million transistors on a 1017 mm² die, with a transistor density of 150.4M per mm². The MI308X is a monolithic data-center accelerator, whereas the 820M is an IGP sharing a package with a CPU.

Shader resources differ by orders of magnitude. The 820M has 128 shading units, 8 TMUs, and 4 ROPs, plus 2 ray tracing cores. The MI308X has 19,456 shading units and 1,216 TMUs, but 0 ROPs and no listed ray tracing cores. The absence of ROPs on the MI308X aligns with its lack of display outputs, as it is not designed for rendering to screens.

Memory architecture is fundamentally different. The 820M uses system-shared memory, with bus width, type, and capacity all listed as "System Shared" and bandwidth described as "System Dependent." The MI308X carries 192 GB of HBM3 memory on an 8192-bit bus, delivering 10.3 TB/s of bandwidth. Its memory clock runs at 2525 MHz, with 10.1 Gbps effective data rate.

Clock speeds also diverge. The 820M has a base clock of 400 MHz and a boost clock of 2800 MHz. The MI308X has a base of 1000 MHz and a boost of 2100 MHz. Despite lower peak clocks, the MI308X achieves far higher throughput due to its massive shader count.

Power envelopes are equally distinct. The 820M carries a 15 W TDP and is an IGP with no power connectors. The MI308X has a 750 W TDP, uses an OAM Module form factor, and requires a suggested PSU of 1150 W. The bus interface differs as well: PCIe 4.0 x8 for the 820M versus PCIe 5.0 x16 for the MI308X.

API support is another dividing line. The 820M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI308X lists no DirectX, OpenGL, or Vulkan support, consistent with its compute-oriented design. The 820M's display outputs are portable-device dependent, while the MI308X has no outputs whatsoever.

Release timing also differs. The 820M launched on 2025-02-28, while the MI308X appeared on 2023-12-05. The 820M's predecessor is listed as Navi II IGP, while the MI308X follows FirePro Data Center. Neither card has a successor recorded.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The Radeon Instinct MI308X produces 81.72 TFLOPS of FP32 throughput, compared to 716.8 GFLOPS for the Radeon 820M. The MI308X is over 100 times faster in single-precision compute.

Q: Does the Radeon 820M support modern graphics APIs?

A: Yes, the 820M lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 support. The MI308X, by contrast, has no DirectX, OpenGL, or Vulkan support recorded.

Q: How much memory does each GPU have?

A: The 820M uses system-shared memory, with capacity, type, and bus width all dependent on the host system. The MI308X has 192 GB of HBM3 memory on an 8192-bit bus with 10.3 TB/s bandwidth.

Q: What is the power consumption difference?

A: The 820M has a 15 W TDP and uses no power connectors. The MI308X has a 750 W TDP, uses an OAM Module slot, and requires a suggested PSU of 1150 W.

Q: Can the MI308X output video to a display?

A: No, the MI308X lists "No outputs" for display connectivity and has 0 ROPs, producing 0 MPixel/s pixel rate. The 820M has display outputs that depend on the portable device it is integrated into.

Q: Which GPU uses a smaller manufacturing process?

A: The 820M is fabricated on a 4 nm TSMC process, while the MI308X uses a 5 nm TSMC process. The 820M's node is one generation smaller despite being the lower-performance part.

Specification Differences

| Specification | AMD Radeon 820M | AMD Radeon Instinct MI308X |

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

| Architecture | RDNA 3.5 | CDNA 3.0 |

| Generation | Navi III IGP (Strix Point Mobile) | Radeon Instinct (MIx) |

| Process Node | 4 nm | 5 nm |

| Transistors | unknown | 153,000 million |

| Die Size | unknown | 1017 mm² |

| Transistor Density | null | 150.4M / mm² |

| Base Clock | 400 MHz | 1000 MHz |

| Boost Clock | 2800 MHz | 2100 MHz |

| Memory Clock | System Shared | 2525 MHz, 10.1 Gbps effective |

| Memory Size | System Shared | 192 GB |

| Memory Type | System Shared | HBM3 |

| Memory Bus Width | System Shared | 8192 bit |

| Memory Bandwidth | System Dependent | 10.3 TB/s |

| Shading Units | 128 | 19456 |

| TMUs | 8 | 1216 |

| ROPs | 4 | 0 |

| RT Cores | 2 | null |

| Pixel Rate | 11.20 GPixel/s | 0 MPixel/s |

| Texture Rate | 22.40 GTexel/s | 2,553.6 GTexel/s |

| FP32 | 716.8 GFLOPS | 81.72 TFLOPS |

| FP16 | 716.8 GFLOPS (1:1) | 653.7 TFLOPS (8:1) |

| TDP | 15 W | 750 W |

| Slot Width | IGP | OAM Module |

| Power Connectors | None | None |

| Suggested PSU | null | 1150 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 5.0 x16 |

| Display Outputs | Portable Device Dependent | No outputs |

| DirectX | 12 Ultimate (12_2) | null |

| OpenGL | 4.6 | null |

| Vulkan | 1.4 | null |

| Release Date | 2025-02-28 | 2023-12-05 |

| Predecessor | Navi II IGP | FirePro Data Center |

The Verdict

The database presents two GPUs with no shared purpose. The Radeon 820M is an integrated graphics processor for mobile devices, running on 15 W, using system-shared memory, and supporting full graphics API stacks including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Its 128 shading units and 2 ray tracing cores target everyday graphics acceleration in a portable context.

The Radeon Instinct MI308X is a data-center accelerator with 19,456 shading units, 192 GB of HBM3, and 10.3 TB/s of memory bandwidth. Its 750 W TDP, OAM Module form factor, and absence of display outputs confirm its role in compute environments, not desktop rendering. The FP16 throughput of 653.7 TFLOPS positions it for workloads that exploit half-precision arithmetic, while the 820M's 1:1 FP16 ratio indicates a more general-purpose approach.

For users selecting a GPU for consumer graphics, the 820M is the only viable option between the two, as the MI308X has no display outputs and no graphics API support. For high-throughput compute tasks, the MI308X's 81.72 TFLOPS FP32 and 653.7 TFLOPS FP16 vastly exceed the 820M's capabilities, making the choice clear based on workload type. The data shows no overlap in their intended usage scenarios, and the specification gaps in memory, power, and compute density reinforce that separation.