AMD Radeon 820M vs AMD Radeon Instinct MI300 Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark results for the AMD Radeon 820M and the AMD Radeon Instinct MI300. Both entries have an average benchmark score of 0 and no associated benchmark entries. The percentile versus all GPUs is identical at 50 for each, which reflects the absence of measured performance data rather than parity in real-world capability.

The Radeon 820M is an integrated graphics processor built for portable devices, while the Radeon Instinct MI300 is a data center accelerator. Their performance profiles diverge so completely that any direct comparison requires extrapolation from their listed specifications. The 820M delivers 716.8 GFLOPS of FP32 compute, while the MI300 delivers 47.87 TFLOPS. That is a 66.8x difference in raw single-precision throughput based on the numbers in the database. In FP16, the gap widens further: the 820M produces 716.8 GFLOPS at a 1:1 ratio, whereas the MI300 produces 383.0 TFLOPS at an 8:1 ratio.

Pixel throughput tells a different story. The 820M has a pixel rate of 11.20 GPixel/s, while the MI300 lists 0 MPixel/s. The MI300 has no ROPs and no display outputs, which explains the zero pixel rate. The 820M has 4 ROPs and is designed to drive displays, so its pixel rate is meaningful for graphics output. Texture rate also favors the MI300 heavily: 1,496.0 GTexel/s versus 22.40 GTexel/s for the 820M, a 66.8x difference that mirrors the FP32 ratio.

Memory bandwidth is another chasm. The 820M uses system shared memory with bandwidth listed as "System Dependent," meaning it borrows from the host system's memory pool. The MI300 uses 128 GB of HBM3 on an 8192-bit bus with 6.55 TB/s of bandwidth. The database does not provide a comparable bandwidth figure for the 820M because it depends entirely on the host platform's memory configuration.

The absence of benchmark scores means the database cannot rank these two against each other with measured results. The specification sheets, however, make the intended roles unmistakable. The 820M belongs to the Navi III IGP generation for Strix Point Mobile, while the MI300 belongs to the Radeon Instinct MIx generation for data center compute.

Where Each One Wins

The Radeon 820M wins in areas tied to integrated graphics and portability. It carries a 15 W TDP, uses no power connectors, and requires no external power supply. Its slot width is listed as IGP, meaning it occupies no expansion slot. The 820M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, making it suitable for modern graphics APIs. It has display outputs, described as "Portable Device Dependent," which means it can drive screens on laptops or other mobile hardware. The base clock of 400 MHz and boost clock of 2800 MHz show a wide dynamic range, allowing the IGP to idle low and boost when needed.

The MI300 wins overwhelmingly in compute throughput, memory capacity, and memory bandwidth. Its 14080 shading units dwarf the 820M's 128. Its 880 texture mapping units compare to 8. The MI300's 128 GB of HBM3 with 6.55 TB/s bandwidth is a data center class memory subsystem, while the 820M shares system memory with no dedicated VRAM. The MI300 uses PCIe 5.0 x16, double the lane width and a generation newer than the 820M's PCIe 4.0 x8. The MI300 requires 2x 8-pin power connectors and a suggested PSU of 1000 W, reflecting its 600 W TDP.

For display-oriented workloads, the 820M is the only one of the two with any graphics output capability. The MI300 lists "No outputs" and has zero ROPs, so it cannot drive a monitor. For compute workloads such as large matrix operations, the MI300's FP32 and FP16 figures put it in a different performance class entirely. The FP16 8:1 ratio on the MI300 indicates specialized throughput for AI or scientific workloads, whereas the 820M's 1:1 FP16 ratio shows a general-purpose approach with no dedicated acceleration path.

The database does not list tensor cores for either product, so any claims about AI acceleration must rely solely on the FP16 throughput figures. The MI300's 383.0 TFLOPS FP16 is the standout number for that category. The 820M's 716.8 GFLOPS FP16 is modest but consistent with an integrated GPU intended for everyday graphics.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The Radeon Instinct MI300 delivers 47.87 TFLOPS of FP32, compared to 716.8 GFLOPS for the Radeon 820M. The MI300 has roughly 66.8x higher single-precision throughput.

Q: Can the Radeon Instinct MI300 output video to a display?

A: No. The MI300 lists "No outputs" for display outputs and has a pixel rate of 0 MPixel/s with 0 ROPs. The Radeon 820M, by contrast, has 4 ROPs and display outputs described as "Portable Device Dependent."

Q: What memory configurations do these two GPUs use?

A: The Radeon 820M uses system shared memory with bandwidth listed as "System Dependent." The Radeon Instinct MI300 uses 128 GB of HBM3 on an 8192-bit bus with 6.55 TB/s of bandwidth.

Q: Which GPU supports modern graphics APIs like DirectX 12 Ultimate?

A: The Radeon 820M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Radeon Instinct MI300 has no API support listed in the database for DirectX, OpenGL, or Vulkan.

Q: What are the power requirements for each GPU?

A: The Radeon 820M has a 15 W TDP and uses no power connectors. The Radeon Instinct MI300 has a 600 W TDP, uses 2x 8-pin power connectors, and has a suggested PSU of 1000 W.

Q: Which GPU has a larger die and more transistors?

A: The Radeon Instinct MI300 uses 153,000 million transistors on a 1017 mm² die with a transistor density of 150.4M per mm². The Radeon 820M has unknown transistor count and die size in the database.

Specification Differences

The Radeon 820M and Radeon Instinct MI300 differ across nearly every recorded specification. The 820M uses a 4 nm process node from TSMC, while the MI300 uses a 5 nm process node, also from TSMC. The 820M has 128 shading units, 8 TMUs, and 4 ROPs. The MI300 has 14080 shading units, 880 TMUs, and 0 ROPs. The 820M includes 2 ray tracing cores; the MI300 lists no ray tracing cores. Neither product lists tensor cores.

Clock speeds diverge sharply. The 820M runs at a 400 MHz base and 2800 MHz boost. The MI300 runs at a 1000 MHz base and 1700 MHz boost, with memory clock listed at 1600 MHz and 6.4 Gbps effective. The 820M's memory clock is listed as "System Shared."

Pixel rates are 11.20 GPixel/s for the 820M versus 0 MPixel/s for the MI300. Texture rates are 22.40 GTexel/s versus 1,496.0 GTexel/s. FP32 is 716.8 GFLOPS versus 47.87 TFLOPS. FP16 is 716.8 GFLOPS at a 1:1 ratio versus 383.0 TFLOPS at an 8:1 ratio.

Power and physical specifications also differ. The 820M has a 15 W TDP, IGP slot width, no power connectors, and no suggested PSU. The MI300 has a 600 W TDP, 2x 8-pin power connectors, and a suggested PSU of 1000 W. The MI300 measures 267 mm in length and 111 mm in height; the 820M has no length, height, or width listed.

Bus interfaces differ by generation and lane count. The 820M uses PCIe 4.0 x8. The MI300 uses PCIe 5.0 x16. Display outputs are "Portable Device Dependent" for the 820M and "No outputs" for the MI300.

Release dates are also far apart. The Radeon 820M released on 2025-02-28. The Radeon Instinct MI300 released on 2023-01-03. The 820M's predecessor is listed as "Navi II IGP," while the MI300's predecessor is "FirePro Data Center." Neither has a successor listed.

Architecture Differences

The two GPUs come from different architectural families. The Radeon 820M uses RDNA 3.5 architecture, part of the Navi III IGP generation for Strix Point Mobile. The Radeon Instinct MI300 uses CDNA 3.0 architecture, part of the Radeon Instinct MIx generation. RDNA targets graphics and consumer workloads, while CDNA targets compute and data center tasks.

The chip names differ: the 820M is built on "Krackan Point 2," while the MI300 uses "Aqua Vanjaram." The process nodes differ as well: 4 nm for the 820M and 5 nm for the MI300, both fabricated by TSMC. The smaller node gives the 820M a transistor density advantage in principle, but the database lists the 820M's transistor count and die size as unknown. The MI300's figures are explicit: 153,000 million transistors on a 1017 mm² die, with a density of 150.4M transistors per mm².

Shading unit counts reflect the architectural split. The 820M has 128 shading units, appropriate for an integrated GPU drawing 15 W. The MI300 has 14080 shading units, appropriate for a 600 W data center accelerator. The MI300 has no ROPs and no display outputs, confirming it is not designed for rasterization or video output. The 820M has 4 ROPs and supports display output, confirming its role as a graphics solution.

Ray tracing support also differs. The 820M includes 2 ray tracing cores, while the MI300 lists none. The 820M's API support includes DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300 lists no API support in the database, consistent with a compute-focused product that does not expose traditional graphics APIs.

Memory architecture is fundamentally different. The 820M uses system shared memory, meaning it has no dedicated VRAM and its bandwidth depends on the host system. The MI300 uses 128 GB of HBM3 on an 8192-bit bus with 6.55 TB/s of bandwidth. HBM3 is a high-bandwidth stacked memory technology suited to large data sets, while shared system memory suits an IGP with modest bandwidth needs.

The FP16 ratio difference indicates different compute priorities. The 820M has a 1:1 FP16 to FP32 ratio, meaning it processes half-precision and single-precision at the same rate. The MI300 has an 8:1 ratio, meaning its FP16 throughput is eight times its FP32 throughput, a design choice that favors workloads with heavy half-precision math, such as machine learning training or inference.

The Verdict

The Radeon 820M is an integrated GPU for portable devices. Its 15 W TDP, IGP slot width, lack of power connectors, and display output support make it suitable for laptops and similar systems. It supports modern graphics APIs, includes ray tracing cores, and has a 2800 MHz boost clock. Its performance class is defined by 716.8 GFLOPS FP32 and 11.20 GPixel/s, figures consistent with everyday graphics and light compute tasks.

The Radeon Instinct MI300 is a data center accelerator. Its 600 W TDP, 2x 8-pin power connectors, 1000 W suggested PSU, and lack of display outputs make it unsuitable for desktop or workstation graphics use. Its 47.87 TFLOPS FP32 and 383.0 TFLOPS FP16 place it in a completely different compute tier. The 128 GB HBM3 pool with 6.55 TB/s bandwidth and 8192-bit bus exist to feed massive parallel workloads.

The database contains no benchmark scores for either product, so the verdict rests on specification analysis. For a system that needs to output video and run graphics applications, the Radeon 820M is the only viable choice of the two. For compute workloads that demand high FP32 or FP16 throughput and large memory capacity, the Radeon Instinct MI300 is the only viable choice.

Users selecting between these two should base the decision on the target environment. Portable devices with integrated graphics requirements align with the 820M. Server racks or compute nodes with 1000 W power delivery and no display needs align with the MI300. The specification sheets show no meaningful overlap: one is a graphics IGP, the other is a compute accelerator. Neither product can substitute for the other in its intended role.