AMD Instinct MI300A vs NVIDIA RTX 500 Mobile Ada Generation Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark results for the AMD Instinct MI300A and the NVIDIA RTX 500 Mobile Ada Generation. Both entries report an average benchmark score of 0 and a percentile rank of 50 against all GPUs in the database. With no benchmark submissions logged for either part, the head-to-head comparison rests entirely on their published specification sheets rather than measured performance data.

The largest gap in raw compute throughput is enormous. The AMD Instinct MI300A delivers 61.29 TFLOPS of FP32 throughput, while the NVIDIA RTX 500 Mobile Ada Generation manages 8.294 TFLOPS. That places the MI300A at roughly 7.4 times the FP32 rate of the mobile NVIDIA part, a difference that reflects their entirely different design targets. The MI300A is a data center accelerator module, while the RTX 500 Mobile is a low-power laptop GPU.

Memory bandwidth shows an even wider separation. The MI300A moves data at 5.32 TB/s, whereas the RTX 500 Mobile operates at 128.0 GB/s. The MI300A's bandwidth advantage is roughly 41.6 times greater. This disparity is expected given the MI300A's 8192-bit HBM3 interface versus the RTX 500 Mobile's 64-bit GDDR6 bus.

Texture throughput also diverges sharply. The MI300A posts 1,915.2 GTexel/s, compared to 129.6 GTexel/s for the RTX 500 Mobile, a factor of about 14.8. Pixel rate is a case where the NVIDIA part actually registers a nonzero figure: 64.80 GPixel/s versus 0 MPixel/s for the MI300A, which has no ROP output stage in the classic sense.

Clock behavior differs in an interesting way. The RTX 500 Mobile has a higher base clock at 1485 MHz versus 1000 MHz for the MI300A, but the boost clocks are closer: 2025 MHz versus 2100 MHz. The MI300A actually boosts 75 MHz higher despite its far larger die and power envelope.

Architecture Differences

The two GPUs come from different architectural families entirely. The AMD Instinct MI300A uses CDNA 3.0 architecture on the Aqua Vanjaram chip, designed for the Instinct (MIx) generation. The NVIDIA RTX 500 Mobile Ada Generation uses Ada Lovelace architecture on the AD107 chip, part of the Ada-MW (x000A) generation. Both are fabricated by TSMC on a 5 nm process node, which is the primary similarity in their manufacturing.

Transistor counts reveal the scale difference. The MI300A packs 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4 million per mm². The RTX 500 Mobile contains 18,900 million transistors on a 159 mm² die, for a density of 118.9 million per mm². The MI300A die is roughly 6.4 times larger in area and carries about 8.1 times more transistors.

The compute unit layouts differ fundamentally. The MI300A has 14,592 shading units, 912 texture mapping units, and no traditional ROPs. The RTX 500 Mobile has 2,048 shading units, 64 TMUs, and 32 ROPs. The MI300A does not report RT cores or tensor cores in the database, while the RTX 500 Mobile includes 16 ray tracing cores and 64 tensor cores. API support also diverges: the MI300A lists DirectX, OpenGL, and Vulkan as N/A, whereas the RTX 500 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Memory architecture is another major differentiator. The MI300A uses 128 GB of HBM3 on an 8192-bit bus, while the RTX 500 Mobile uses 4 GB of GDDR6 on a 64-bit bus. The MI300A's memory clock is 1300 MHz with 5.2 Gbps effective data rate, compared to 2000 MHz with 16 Gbps effective for the RTX 500 Mobile.

Power and physical design separate the two completely. The MI300A carries a 750 W TDP, comes as an OAM Module with no power connectors, and requires a suggested PSU of 1150 W. It has no display outputs. The RTX 500 Mobile is an IGP with a 35 W TDP, also has no power connectors, lists no suggested PSU, and its display outputs are described as portable device dependent.

Release timing places the MI300A first, with a release date of 2023-12-05, followed by the RTX 500 Mobile on 2024-02-25. The MI300A's predecessor is Radeon Instinct, while the RTX 500 Mobile's predecessor is Ampere-MW and its successor is Blackwell-MW. The MI300A lists no successor, and the RTX 500 Mobile has no successor listed beyond the Blackwell-MW entry.

FAQ

Q: Which GPU has higher FP32 compute throughput?

A: The AMD Instinct MI300A delivers 61.29 TFLOPS of FP32 performance, compared to 8.294 TFLOPS for the NVIDIA RTX 500 Mobile Ada Generation, making the MI300A about 7.4 times faster in this metric.

Q: How do the memory systems compare?

A: The MI300A uses 128 GB of HBM3 with an 8192-bit bus and 5.32 TB/s bandwidth. The RTX 500 Mobile uses 4 GB of GDDR6 with a 64-bit bus and 128.0 GB/s bandwidth. The MI300A's bandwidth is roughly 41.6 times higher.

Q: Are these GPUs on the same manufacturing process?

A: Yes, both are fabricated by TSMC on a 5 nm process node. However, the MI300A has a transistor density of 150.4 million per mm², while the RTX 500 Mobile has 118.9 million per mm².

Q: Does the RTX 500 Mobile support ray tracing?

A: Yes, it includes 16 ray tracing cores and 64 tensor cores. The MI300A does not report RT or tensor core counts in the database.

Q: What are the power requirements for each?

A: The MI300A has a 750 W TDP and suggests a 1150 W PSU. The RTX 500 Mobile has a 35 W TDP and lists no suggested PSU. Both use no external power connectors.

Q: Which GPU supports modern graphics APIs?

A: The RTX 500 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300A lists all three APIs as N/A, reflecting its compute-focused design with no display outputs.

Specification Differences

The two parts differ in nearly every recorded specification category.

• Chip: Aqua Vanjaram (AMD) versus AD107 (NVIDIA)
• Architecture: CDNA 3.0 versus Ada Lovelace
• Generation: Instinct (MIx) versus Ada-MW (x000A)
• Process node: Both 5 nm (TSMC)
• Transistors: 153,000 million versus 18,900 million
• Die size: 1017 mm² versus 159 mm²
• Transistor density: 150.4M / mm² versus 118.9M / mm²
• Base clock: 1000 MHz versus 1485 MHz
• Boost clock: 2100 MHz versus 2025 MHz
• Memory clock: 1300 MHz 5.2 Gbps effective versus 2000 MHz 16 Gbps effective
• Memory size: 128 GB versus 4 GB
• Memory type: HBM3 versus GDDR6
• Memory bus width: 8192 bit versus 64 bit
• Memory bandwidth: 5.32 TB/s versus 128.0 GB/s
• Shading units: 14,592 versus 2,048
• TMUs: 912 versus 64
• ROPs: 0 versus 32
• RT cores: Not listed versus 16
• Tensor cores: Not listed versus 64
• Pixel rate: 0 MPixel/s versus 64.80 GPixel/s
• Texture rate: 1,915.2 GTexel/s versus 129.6 GTexel/s
• FP32: 61.29 TFLOPS versus 8.294 TFLOPS
• FP16: Not listed versus 8.294 TFLOPS (1:1)
• TDP: 750 W versus 35 W
• Slot width: OAM Module versus IGP
• Suggested PSU: 1150 W versus not listed
• Bus interface: PCIe 5.0 x16 versus PCIe 4.0 x8
• Display outputs: No outputs versus Portable Device Dependent
• DirectX: N/A versus 12 Ultimate (12_2)
• OpenGL: N/A versus 4.6
• Vulkan: N/A versus 1.4
• Production status: Not listed versus Active
• Release date: 2023-12-05 versus 2024-02-25
• Predecessor: Radeon Instinct versus Ampere-MW
• Successor: Not listed versus Blackwell-MW

The Verdict

The data positions these two GPUs at opposite ends of the hardware spectrum. The AMD Instinct MI300A is a 750 W OAM module with 128 GB of HBM3, 61.29 TFLOPS of FP32 throughput, and no display outputs or graphics API support. It is built for high-density compute workloads where memory capacity and bandwidth dominate. The NVIDIA RTX 500 Mobile Ada Generation is a 35 W IGP with 4 GB of GDDR6, 8.294 TFLOPS of FP32, and full modern graphics API support including ray tracing. It is built for portable devices that need graphics output and energy efficiency.

For applications requiring maximum compute throughput, memory bandwidth, or memory capacity, the MI300A is the clear choice from the recorded specifications. Its 5.32 TB/s bandwidth and 128 GB capacity have no equivalent in the mobile part. For any workload involving graphics rendering, display output, ray tracing, or standard GPU APIs, the RTX 500 Mobile is the only viable option, as the MI300A exposes no outputs and lists no graphics API support.

The RTX 500 Mobile also offers a significantly lower power envelope at 35 W versus 750 W, which suits its mobile form factor. The MI300A requires a suggested PSU of 1150 W and an OAM Module slot, limiting it to server installations. The RTX 500 Mobile's successor is listed as Blackwell-MW, while the MI300A lists no successor, suggesting the NVIDIA part has a clearer upgrade path in the database.

There is no benchmark data to validate real-world performance for either part. The percentile rank of 50 for both GPUs reflects an absence of recorded benchmark scores rather than an equivalence in capability. Buyers should weigh the specification differences directly: the MI300A for scale-out compute, the RTX 500 Mobile for portable graphics.