AMD Instinct MI300 vs NVIDIA RTX 500 Mobile Ada Generation Comparison

Head-to-Head Benchmarks

The database contains no recorded benchmark scores for either the AMD Instinct MI300 or the NVIDIA RTX 500 Mobile Ada Generation. Both accelerators hold a percentile rank of 50 against all GPUs, and neither has an average benchmark score above zero. This means direct performance comparisons must be interpreted purely from architectural specifications, clock behavior, and memory subsystems rather than from measured workloads.

The absence of head-to-head data is itself informative. The MI300 is a datacenter accelerator with zero display outputs, while the RTX 500 Mobile is an integrated-class mobile part with outputs dependent on the host device. Their intended operating contexts are so dissimilar that no shared benchmark suite has produced comparable results in the database. The MI300 shows a 5.77x advantage in FP32 throughput at 47.87 TFLOPS versus 8.294 TFLOPS, and its texture rate of 1,496.0 GTexel/s exceeds the RTX 500's 129.6 GTexel/s by a factor of 11.5. The pixel rate comparison is even more lopsided in the opposite direction: the RTX 500 delivers 64.80 GPixel/s while the MI300 records 0 MPixel/s, because the Instinct part has no raster output units.

Memory bandwidth separates the two by an order of magnitude. The MI300's HBM3 stack reaches 5.32 TB/s across an 8192-bit bus, whereas the RTX 500 relies on 128.0 GB/s over a 64-bit GDDR6 interface. That is a 41.6x bandwidth gap. The MI300 also holds a 32x capacity advantage with 128 GB versus 4 GB. Clock behavior differs meaningfully: the RTX 500 boosts to 2025 MHz from a 1485 MHz base, while the MI300 operates at a 1000 MHz base and 1700 MHz boost. The mobile part runs at a 35 W TDP, and the Instinct card consumes 600 W, a 17.1x difference in power envelope.

Architecture Differences

The MI300 uses the CDNA 3.0 architecture on the Aqua Vanjaram chip, while the RTX 500 Mobile employs Ada Lovelace on the AD107 die. Both are fabricated by TSMC on a 5 nm process node, but the transistor counts diverge sharply. The MI300 integrates 153,000 million transistors across a 1017 mm² die, yielding a density of 150.4M transistors per mm². The RTX 500 packs 18,900 million transistors into 159 mm², for a density of 118.9M per mm². The MI300's die is 6.4x larger and carries 8.1x more transistors, yet its density advantage is only 1.27x, indicating a design optimized for massive memory controllers and compute arrays rather than compact logic.

Shading resources show a 6.9x difference: the MI300 has 14,080 shading units and 880 texture mapping units, whereas the RTX 500 has 2,048 shading units and 64 TMUs. The RTX 500 includes 16 ray tracing cores and 64 tensor cores; the MI300 lists no RT or tensor core counts, reflecting its focus on general compute rather than graphics acceleration. The MI300 has zero ROPs and no pixel output, consistent with its server role. The RTX 500 has 32 ROPs.

Memory architecture is fundamentally different. The MI300 uses HBM3 with 128 GB capacity and a 5.2 Gbps effective data rate, while the RTX 500 uses GDDR6 at 16 Gbps effective. The bus widths are 8192 bits and 64 bits respectively. The MI300's power delivery requires 2x 8-pin connectors and a 1000 W suggested PSU, while the RTX 500 draws power from the host with no connectors and no suggested PSU listed. The MI300 uses PCIe 5.0 x16; the RTX 500 uses PCIe 4.0 x8. The MI300 has no display outputs and no DirectX, OpenGL, or Vulkan support. The RTX 500 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

FAQ

Q: Which processor has the higher FP32 compute throughput?

A: The AMD Instinct MI300 records 47.87 TFLOPS FP32, which is 5.77x the RTX 500 Mobile's 8.294 TFLOPS. Both achieve a 1:1 FP16 to FP32 ratio, so the same multiplier applies to half-precision work.

Q: How do the memory capacities and bandwidths compare?

A: The MI300 has 128 GB of HBM3 with 5.32 TB/s bandwidth over an 8192-bit bus. The RTX 500 has 4 GB of GDDR6 with 128.0 GB/s over a 64-bit bus. The MI300 offers 32x the capacity and 41.6x the bandwidth.

Q: Can the MI300 output video to a display?

A: No. The MI300 lists "No outputs" for display connections, has 0 ROPs, and a pixel rate of 0 MPixel/s. It also has no DirectX, OpenGL, or Vulkan API support. The RTX 500 Mobile provides display outputs described as "Portable Device Dependent" and supports modern graphics APIs.

Q: What is the power consumption difference?

A: The MI300 has a 600 W TDP and requires 2x 8-pin power connectors plus a 1000 W suggested PSU. The RTX 500 Mobile has a 35 W TDP, uses no power connectors, and lists no suggested PSU. The MI300 consumes 17.1x the power budget.

Q: Which GPU has a smaller physical footprint?

A: The RTX 500 Mobile has no listed dimensions and is classified as an integrated graphics processor (IGP). The MI300 measures 267 mm in length and 111 mm in height. The mobile part is designed to be embedded in a laptop chassis, while the Instinct card occupies a full accelerator slot.

Q: When were these products released relative to each other?

A: The MI300 launched on January 3, 2023. The RTX 500 Mobile Ada Generation followed on February 25, 2024, approximately 13 months later. Neither has a recorded launch MSRP in the database.

The Verdict

The recorded data defines two entirely separate product classes. The AMD Instinct MI300 is a compute accelerator with no graphics output, no consumer API support, and a 600 W power envelope. It delivers 5.77x the FP32 throughput, 11.5x the texture rate, 32x the memory capacity, and 41.6x the memory bandwidth of the RTX 500 Mobile. Its transistor budget is 8.1x larger, and its die area is 6.4x greater. It targets workloads that fit entirely within its 128 GB HBM3 pool and require extreme bandwidth.

The NVIDIA RTX 500 Mobile Ada Generation is a low-power mobile graphics processor. It consumes 35 W, supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and provides 64.80 GPixel/s rasterization throughput. It includes ray tracing and tensor cores. It has 4 GB of memory and 128.0 GB/s bandwidth. Its PCIe 4.0 x8 interface suits laptop integration.

The database's percentile rankings place both at 50, but that reflects missing benchmark data rather than comparable performance. The MI300's pixel rate of 0 MPixel/s and lack of display outputs disqualify it from any graphics workload. The RTX 500's 8.294 TFLOPS and 128.0 GB/s bandwidth place it far below the MI300 for compute density, but its 35 W TDP makes it viable where power is constrained. There is no overlap in their functional roles. The verdict from the data is that the MI300 wins every compute metric while the RTX 500 wins every graphics and mobility metric. Neither replaces the other.

Specification Differences

| Field | AMD Instinct MI300 | NVIDIA RTX 500 Mobile Ada Generation |

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

| Architecture | CDNA 3.0 | Ada Lovelace |

| Chip | Aqua Vanjaram | AD107 |

| Generation | Instinct (MIx) | Ada-MW (x000A) |

| Transistors | 153,000 million | 18,900 million |

| Die Size | 1017 mm² | 159 mm² |

| Transistor Density | 150.4M / mm² | 118.9M / mm² |

| Base Clock | 1000 MHz | 1485 MHz |

| Boost Clock | 1700 MHz | 2025 MHz |

| Memory Clock | 1300 MHz 5.2 Gbps effective | 2000 MHz 16 Gbps effective |

| Memory Size | 128 GB | 4 GB |

| Memory Type | HBM3 | GDDR6 |

| Memory Bus Width | 8192 bit | 64 bit |

| Memory Bandwidth | 5.32 TB/s | 128.0 GB/s |

| Shading Units | 14080 | 2048 |

| TMUs | 880 | 64 |

| ROPs | 0 | 32 |

| RT Cores | Not listed | 16 |

| Tensor Cores | Not listed | 64 |

| Pixel Rate | 0 MPixel/s | 64.80 GPixel/s |

| Texture Rate | 1,496.0 GTexel/s | 129.6 GTexel/s |

| FP32 | 47.87 TFLOPS | 8.294 TFLOPS |

| FP16 | 47.87 TFLOPS (1:1) | 8.294 TFLOPS (1:1) |

| TDP | 600 W | 35 W |

| Slot Width | Not listed | IGP |

| Power Connectors | 2x 8-pin | None |

| Suggested PSU | 1000 W | Not listed |

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

| Display Outputs | No outputs | Portable Device Dependent |

| DirectX | N/A | 12 Ultimate (12_2) |

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Dimensions | 267 mm x 111 mm | Not listed |

| Production Status | Not listed | Active |

| Release Date | 2023-01-03 | 2024-02-25 |

| Predecessor | Radeon Instinct | Ampere-MW |

| Successor | Not listed | Blackwell-MW |

Where Each One Wins

The MI300 wins in raw compute throughput. Its 47.87 TFLOPS FP32 and FP16 figures exceed the RTX 500's 8.294 TFLOPS by 5.77x. Its texture rate of 1,496.0 GTexel/s is 11.5x higher. Memory-bound workloads favor the MI300 decisively: 5.32 TB/s bandwidth and 128 GB capacity are 41.6x and 32x the RTX 500's respective figures. The 8192-bit bus width supports massive parallel memory access patterns. The MI300's 153,000 million transistors and 1017 mm² die indicate a design built for sustained compute throughput in a server chassis with a 600 W budget and 1000 W suggested PSU.

The RTX 500 wins in graphics and mobility. Its 64.80 GPixel/s pixel rate is the only rasterization throughput recorded between the two, because the MI300 has zero ROPs and no pixel output. The RTX 500's 16 RT cores and 64 tensor cores enable ray tracing and AI acceleration features that the MI300 does not list. Its DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support cover consumer and professional graphics APIs; the MI300 has no API support at all. The RTX 500's 35 W TDP and connector-free power design suit battery-powered laptops. Its PCIe 4.0 x8 interface and integrated form factor allow placement in thin systems where the MI300's 267 mm length and 111 mm height cannot fit.

The RTX 500 also wins on clock speed. Its 2025 MHz boost is 19% higher than the MI300's 1700 MHz, and its 1485 MHz base is 48.5% higher. This reflects the different design goals: the mobile part uses a smaller 159 mm² die with 18,900 million transistors to reach higher frequencies within 35 W, while the MI300 spreads 153,000 million transistors across 1017 mm² at lower clocks for aggregate throughput. The RTX 500's production status is listed as Active; the MI300's is not listed, which may indicate a discontinued or specialized production cycle. The RTX 500 has a defined successor in Blackwell-MW, while the MI300 lists none.