AMD Instinct MI300 vs NVIDIA GeForce RTX 5080 SUPER Comparison

Head-to-Head Benchmarks

The recorded data shows that the AMD Instinct MI300 has no benchmark scores listed in the database, while the NVIDIA GeForce RTX 5080 SUPER has a single recorded result. This makes direct numerical comparison impossible, but the available figures still provide useful context.

The RTX 5080 SUPER produces a 3DMark Steel Nomad DX12 score of 3075. That places it at the 19th percentile among all GPUs in the database. For reference, its nearest rivals in the database include the NVIDIA Quadro P1000 with an average score of 3163 (which is 2.8% higher than the RTX 5080 SUPER), the Intel Arc Pro B60 with an average score of 3182 (3.4% higher), the NVIDIA GeForce 820A with an average score of 2983 (3.1% lower), and the NVIDIA GeForce GTX 860M with an average score of 2967 (3.6% lower). The RTX 5080 SUPER sits within a narrow band of roughly 3% above or below these comparison points.

The MI300 has an average benchmark score of zero and a percentile rank of 50, meaning the database contains no performance measurements for it. Its nearest rivals list is empty. The head-to-head benchmark table between the two cards is also empty, with zero wins recorded for either side. Therefore, no direct performance delta can be derived from the measurements.

What can be stated is that the MI300 delivers 47.87 TFLOPS of FP32 compute and 47.87 TFLOPS of FP16 (1:1 ratio), while the RTX 5080 SUPER delivers 56.28 TFLOPS of FP32 and 56.28 TFLOPS of FP16 (also 1:1). In raw theoretical compute, the RTX 5080 SUPER is approximately 17.6% higher in both FP32 and FP16. However, these figures come from the specification fields, not from benchmark runs.

The MI300 has a texture rate of 1,496.0 GTexel/s, which is substantially higher than the RTX 5080 SUPER's 879.3 GTexel/s. Conversely, the RTX 5080 SUPER has a pixel rate of 293.1 GPixel/s, while the MI300 has a pixel rate of 0 MPixel/s. The MI300 has no ROPs, which explains its zero pixel rate. The RTX 5080 SUPER has 112 ROPs.

In terms of memory bandwidth, the MI300 reaches 5.32 TB/s using HBM3 across an 8192-bit bus, whereas the RTX 5080 SUPER reaches 1.02 TB/s using GDDR7 across a 256-bit bus. The MI300's bandwidth advantage is roughly 5.2 times that of the RTX 5080 SUPER. The MI300 also has 128 GB of memory versus 24 GB on the RTX 5080 SUPER.

Clock speeds differ significantly. The MI300 has a base clock of 1000 MHz and a boost clock of 1700 MHz, with memory clocked at 1300 MHz (5.2 Gbps effective). The RTX 5080 SUPER has a base clock of 2295 MHz and a boost clock of 2617 MHz, with memory at 2000 MHz (32 Gbps effective). The RTX 5080 SUPER's boost clock is about 54% higher than the MI300's boost clock.

The Verdict

The database contains no benchmark scores for the AMD Instinct MI300, so its performance cannot be ranked against the RTX 5080 SUPER from recorded measurements. The RTX 5080 SUPER has one benchmark entry with a score of 3075, placing it at the 19th percentile. The MI300 sits at the 50th percentile by default because no tests were run.

For anyone choosing between these two based strictly on the data, the RTX 5080 SUPER is the only one with measurable gaming or DX12 performance evidence. The MI300's zero benchmark average and empty rivals list mean no verified results exist to support any performance claim. The MI300 does show enormous memory capacity (128 GB), massive bandwidth (5.32 TB/s), and a very high texture rate (1,496.0 GTexel/s), but none of that is confirmed by actual benchmark outcomes.

The RTX 5080 SUPER also has a production status of "Active" and a 2025 release date, while the MI300 has no production status listed and a 2023 release date. The RTX 5080 SUPER is the only one with display outputs (1x HDMI 2.1b, 3x DisplayPort 2.1b) and a full API stack (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4). The MI300 has no display outputs and no API support listed.

A practical reading is that the RTX 5080 SUPER is a finished consumer product with verified performance data, whereas the MI300 is a compute accelerator with no benchmark record in this database. The MI300's 600 W TDP and 1000 W suggested PSU make it a data-center-oriented part, not a typical desktop GPU.

Where Each One Wins

Based on recorded specifications, the AMD Instinct MI300 wins in memory capacity (128 GB versus 24 GB), memory bandwidth (5.32 TB/s versus 1.02 TB/s), memory bus width (8192 bit versus 256 bit), texture rate (1,496.0 GTexel/s versus 879.3 GTexel/s), shading units (14080 versus 10752), TMUs (880 versus 336), and transistor count (153,000 million versus 45,600 million). It also has a larger die (1017 mm² versus 378 mm²) and a higher transistor density (150.4M per mm² versus 120.6M per mm²).

The NVIDIA GeForce RTX 5080 SUPER wins in FP32 compute (56.28 TFLOPS versus 47.87 TFLOPS), FP16 compute (56.28 TFLOPS versus 47.87 TFLOPS), pixel rate (293.1 GPixel/s versus 0 MPixel/s), ROPs (112 versus 0), base clock (2295 MHz versus 1000 MHz), boost clock (2617 MHz versus 1700 MHz), memory clock (2000 MHz versus 1300 MHz), and memory type (GDDR7 versus HBM3). It also has RT cores (84) and tensor cores (336) that the MI300 lacks entirely. The RTX 5080 SUPER has a lower TDP (415 W versus 600 W) and a smaller physical footprint (304 mm length versus 267 mm length, but the MI300's width is not listed).

The real-world use case split follows from these differences. The MI300 is built for compute-heavy workloads where massive memory capacity and bandwidth matter, such as large-scale data processing or AI training. The RTX 5080 SUPER is built for rendering and gaming, given its pixel rate, ROPs, RT cores, tensor cores, display outputs, and API support.

FAQ

Q: Which GPU has higher FP32 performance in the database?

A: The RTX 5080 SUPER has 56.28 TFLOPS FP32, while the MI300 has 47.87 TFLOPS FP32.

Q: How much memory does each card have?

A: The MI300 has 128 GB of HBM3 memory, and the RTX 5080 SUPER has 24 GB of GDDR7 memory.

Q: What is the RTX 5080 SUPER's benchmark score and how does it compare to its nearest rivals?

A: Its 3DMark Steel Nomad DX12 score is 3075. It trails the Quadro P1000 by 2.8% and the Arc Pro B60 by 3.4%, and beats the GeForce 820A by 3.1% and the GTX 860M by 3.6%.

Q: Does the MI300 support display outputs or graphics APIs?

A: No. The MI300 has no display outputs, and its DirectX, OpenGL, and Vulkan support are all listed as N/A.

Q: What are the power requirements for each card?

A: The MI300 has a TDP of 600 W and a suggested PSU of 1000 W, with 2x 8-pin power connectors. The RTX 5080 SUPER has a TDP of 415 W and uses a single 16-pin connector; no suggested PSU is listed.

Q: Which card has ray tracing and tensor cores?

A: Only the RTX 5080 SUPER. It has 84 RT cores and 336 tensor cores. The MI300 lists no RT cores and no tensor cores.

Architecture Differences

The MI300 uses the Aqua Vanjaram chip based on CDNA 3.0 architecture, manufactured on a 5 nm process at TSMC. It belongs to the Instinct (MIx) generation. The RTX 5080 SUPER uses the GB203 chip based on Blackwell 2.0 architecture, also on a 5 nm TSMC process, and belongs to the GeForce 50 generation.

The MI300 is a compute accelerator with 14,080 shading units, 880 TMUs, and zero ROPs. It has no RT cores and no tensor cores. Its memory subsystem uses HBM3 with an 8192-bit bus and 128 GB capacity, delivering 5.32 TB/s of bandwidth. The memory clock is 1300 MHz, which translates to 5.2 Gbps effective.

The RTX 5080 SUPER is a graphics card with 10,752 shading units, 336 TMUs, and 112 ROPs. It has 84 RT cores and 336 tensor cores. Its memory subsystem uses GDDR7 with a 256-bit bus and 24 GB capacity, delivering 1.02 TB/s of bandwidth. The memory clock is 2000 MHz, which translates to 32 Gbps effective.

The MI300's die is 1017 mm² with 153,000 million transistors, giving a density of 150.4M per mm². The RTX 5080 SUPER's die is 378 mm² with 45,600 million transistors, giving a density of 120.6M per mm². The MI300 is over 2.6 times larger in die area and has over 3.3 times more transistors.

The MI300 has no graphics API support, no display outputs, and a pixel rate of zero. The RTX 5080 SUPER supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and has 1x HDMI 2.1b and 3x DisplayPort 2.1b outputs.

The power delivery differs as well. The MI300 uses 2x 8-pin connectors with a 600 W TDP and a suggested PSU of 1000 W. The RTX 5080 SUPER uses a single 16-pin connector with a 415 W TDP and no suggested PSU listed.

Specification Differences

The following fields differ between the two cards:

• Shading units: 14,080 (MI300) versus 10,752 (RTX 5080 SUPER)
• TMUs: 880 versus 336
• ROPs: 0 versus 112
• RT cores: None versus 84
• Tensor cores: None versus 336
• Pixel rate: 0 MPixel/s versus 293.1 GPixel/s
• Texture rate: 1,496.0 GTexel/s versus 879.3 GTexel/s
• FP32: 47.87 TFLOPS versus 56.28 TFLOPS
• FP16: 47.87 TFLOPS versus 56.28 TFLOPS
• Base clock: 1000 MHz versus 2295 MHz
• Boost clock: 1700 MHz versus 2617 MHz
• Memory clock: 1300 MHz (5.2 Gbps effective) versus 2000 MHz (32 Gbps effective)
• Memory size: 128 GB versus 24 GB
• Memory type: HBM3 versus GDDR7
• Memory bus width: 8192 bit versus 256 bit
• Memory bandwidth: 5.32 TB/s versus 1.02 TB/s
• TDP: 600 W versus 415 W
• Power connectors: 2x 8-pin versus 1x 16-pin
• Suggested PSU: 1000 W versus not listed
• Slot width: Not listed versus Dual-slot
• Display outputs: No outputs versus 1x HDMI 2.1b, 3x DisplayPort 2.1b
• APIs: DirectX N/A, OpenGL N/A, Vulkan N/A versus DirectX 12 Ultimate (12_2), OpenGL 4.6, Vulkan 1.4
• Dimensions: 267 mm length, 111 mm height versus 304 mm length, 137 mm height, 40 mm width
• Transistors: 153,000 million versus 45,600 million
• Die size: 1017 mm² versus 378 mm²
• Transistor density: 150.4M / mm² versus 120.6M / mm²
• Chip: Aqua Vanjaram versus GB203
• Architecture: CDNA 3.0 versus Blackwell 2.0
• Generation: Instinct (MIx) versus GeForce 50
• Release date: 2023 versus 2025
• Production status: Not listed versus Active
• Launch MSRP: Not listed versus 999 USD

The RTX 5080 SUPER has a higher boost clock by 917 MHz, higher FP32 by 8.41 TFLOPS, and higher FP16 by the same amount. The MI300 has a higher texture rate by 616.7 GTexel/s and dramatically higher memory bandwidth by 4.30 TB/s.