AMD Instinct MI300 vs AMD Radeon 820M Comparison

The Verdict

The AMD Instinct MI300 and AMD Radeon 820M occupy opposite extremes of the GPU spectrum, and the recorded data confirms they serve entirely different purposes. The Instinct MI300 is a data center accelerator built for massive compute workloads, while the Radeon 820M is an integrated graphics processor for portable devices. Neither product benchmarks higher than the other in any recorded head-to-head comparison, as the database contains no shared benchmark scores. The Instinct MI300 targets users requiring dedicated accelerator-class hardware with 128 GB of HBM3 memory and 47.87 TFLOPS of FP32 compute. The Radeon 820M serves as an integrated graphics solution for mobile systems, with its 15 W power envelope and system-shared memory making it suitable for compact laptops. The data shows the Instinct MI300 delivers 14080 shading units, while the Radeon 820M delivers 128 shading units, a difference of more than two orders of magnitude in raw shader count. The Radeon 820M remains an active production part with DirectX 12 Ultimate support, whereas the Instinct MI300's production status is not recorded in the database.

Architecture Differences

The Instinct MI300 uses the Aqua Vanjaram chip built on CDNA 3.0 architecture, fabricated on a 5 nm process at TSMC. This chip integrates 153,000 million transistors across a 1017 mm² die, yielding a transistor density of 150.4M per mm². The architecture targets compute-intensive workloads with no display outputs and no graphics API support, as the database records DirectX, OpenGL, and Vulkan as N/A. The Radeon 820M uses the Krackan Point 2 chip based on RDNA 3.5 architecture, manufactured on a 4 nm process at TSMC. Its transistor count and die size are not recorded, and it belongs to the Navi III IGP generation for Strix Point Mobile platforms. The RDNA 3.5 architecture includes 2 ray tracing cores and supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, making it a fully featured graphics processor for consumer applications.

The Instinct MI300's memory subsystem consists of 128 GB of HBM3 with an 8192-bit bus width and 5.32 TB/s bandwidth. The memory clock runs at 1300 MHz with 5.2 Gbps effective data rate. The Radeon 820M uses system-shared memory with system-dependent bandwidth, meaning its memory performance varies based on the host platform. The Instinct MI300 connects via PCIe 5.0 x16, while the Radeon 820M uses PCIe 4.0 x8. The Instinct MI300 requires 2x 8-pin power connectors and a suggested PSU of 1000 W, drawing 600 W TDP. The Radeon 820M has no power connectors and consumes only 15 W TDP, with no suggested PSU recorded.

FAQ

Q: Which GPU has more shading units?

A: The AMD Instinct MI300 has 14080 shading units, while the AMD Radeon 820M has only 128 shading units.

Q: What are the FP32 performance figures for each GPU?

A: The Instinct MI300 delivers 47.87 TFLOPS of FP32 compute, while the Radeon 820M delivers 716.8 GFLOPS, which is 0.7168 TFLOPS.

Q: Do these GPUs support the same graphics APIs?

A: No. The Radeon 820M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Instinct MI300 records N/A for all graphics APIs, as it has no display outputs.

Q: What memory configurations do they use?

A: The Instinct MI300 has 128 GB of HBM3 memory with an 8192-bit bus and 5.32 TB/s bandwidth. The Radeon 820M uses system-shared memory with system-dependent bandwidth.

Q: What is the power consumption difference?

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

Q: What are the release dates for each product?

A: The Instinct MI300 was released on January 3, 2023. The Radeon 820M was released on February 28, 2025.

Specification Differences

The two GPUs differ across nearly every recorded specification. The process node differs: the Instinct MI300 uses 5 nm TSMC, while the Radeon 820M uses 4 nm TSMC. The architecture differs: CDNA 3.0 versus RDNA 3.5. The chip names differ: Aqua Vanjaram versus Krackan Point 2. The generation classifications differ: Instinct (MIx) versus Navi III IGP (Strix Point Mobile).

The clock speeds show a notable difference. The Instinct MI300 has a base clock of 1000 MHz and a boost clock of 1700 MHz. The Radeon 820M has a base clock of 400 MHz and a boost clock of 2800 MHz, achieving a higher boost clock despite its lower base. Memory clocks differ as well: the Instinct MI300 runs at 1300 MHz with 5.2 Gbps effective, while the Radeon 820M uses system-shared memory with no dedicated clock.

Shading units differ dramatically: 14080 versus 128. Texture mapping units number 880 versus 8. Raster output units are 0 for the Instinct MI300 versus 4 for the Radeon 820M. The Radeon 820M has 2 ray tracing cores, while the Instinct MI300 has none recorded. Pixel rate is 0 MPixel/s for the Instinct MI300 versus 11.20 GPixel/s for the Radeon 820M. Texture rate is 1,496.0 GTexel/s versus 22.40 GTexel/s. FP32 performance is 47.87 TFLOPS versus 716.8 GFLOPS. FP16 performance mirrors FP32 at 47.87 TFLOPS (1:1) versus 716.8 GFLOPS (1:1).

TDP differs substantially: 600 W versus 15 W. Power connectors differ: 2x 8-pin versus none. The suggested PSU is 1000 W for the Instinct MI300, with none recorded for the Radeon 820M. Bus interfaces differ: PCIe 5.0 x16 versus PCIe 4.0 x8. Display outputs differ: no outputs versus portable device dependent. The Instinct MI300 has physical dimensions of 267 mm length and 111 mm height, while the Radeon 820M has no recorded dimensions and is classified as an IGP slot width. The production status is not recorded for the Instinct MI300, but the Radeon 820M is active. Release dates differ by over two years: January 3, 2023 versus February 28, 2025. The predecessors differ: Radeon Instinct versus Navi II IGP.

Head-to-Head Benchmarks

The database records no head-to-head benchmark comparisons between the AMD Instinct MI300 and the AMD Radeon 820M. Neither product has any benchmark entries in the database, and both hold a percentile rank of 50 against all GPUs with an average benchmark score of 0. No nearest rivals are recorded for either product. The absence of benchmark data means direct performance comparisons cannot be quantified from the recorded measurements.

The specification data, however, provides a basis for qualitative comparison. The Instinct MI300's FP32 compute of 47.87 TFLOPS represents a compute capability approximately 66.8 times higher than the Radeon 820M's 716.8 GFLOPS, based solely on the recorded figures. The texture rate difference is similarly large: 1,496.0 GTexel/s versus 22.40 GTexel/s. The Instinct MI300's memory bandwidth of 5.32 TB/s vastly exceeds the system-dependent bandwidth of the Radeon 820M, though no exact figure is recorded for the latter.

The Radeon 820M holds advantages in several consumer-oriented specifications. Its boost clock of 2800 MHz exceeds the Instinct MI300's 1700 MHz boost clock. Its pixel rate of 11.20 GPixel/s exceeds the Instinct MI300's 0 MPixel/s, which reflects the latter's lack of rasterization hardware. The Radeon 820M supports modern graphics APIs including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the Instinct MI300 records no API support. The Radeon 820M also includes 2 ray tracing cores, a feature entirely absent from the Instinct MI300's recorded specifications.

The power efficiency comparison favors the Radeon 820M based on the recorded data. The Radeon 820M delivers 716.8 GFLOPS within a 15 W TDP, while the Instinct MI300 delivers 47.87 TFLOPS within a 600 W TDP. The Instinct MI300's power draw is 40 times higher, while its FP32 throughput is approximately 66.8 times higher, indicating a better performance-per-watt ratio for the accelerator in raw compute terms. The Radeon 820M's system-shared memory architecture eliminates dedicated memory power consumption, though this also limits its memory bandwidth to system-dependent levels.

The physical design differences reinforce their distinct roles. The Instinct MI300 measures 267 mm in length and 111 mm in height, requiring a full-size accelerator slot with dual 8-pin power connectors and a 1000 W suggested PSU. The Radeon 820M has no recorded dimensions and occupies an IGP slot with no external power requirements. The Instinct MI300 has no display outputs, confirming its role as a compute accelerator rather than a graphics output device. The Radeon 820M's display outputs are portable device dependent, meaning they vary by the host laptop or handheld system.

The release timeline shows the Instinct MI300 launched on January 3, 2023, while the Radeon 820M followed on February 28, 2025. The predecessor naming reflects this progression: the Instinct MI300 succeeded the Radeon Instinct, while the Radeon 820M succeeded the Navi II IGP. Both products remain without recorded successors in the database. The transistor density of the Instinct MI300 measures 150.4M per mm², while the Radeon 820M's transistor count and die size are unknown, preventing any density comparison. The Instinct MI300's 1017 mm² die size represents a substantial silicon area, while the Radeon 820M's integrated design likely occupies a much smaller area, though no figure is recorded.