AMD Instinct MI300 vs NVIDIA RTX 5880 Ada Generation Comparison

Head-to-Head Benchmarks

The recorded database does not contain any direct head-to-head benchmark results between the AMD Instinct MI300 and the NVIDIA RTX 5880 Ada Generation. The MI300 has no benchmark scores listed, while the RTX 5880 carries a full set of PassMark and Geekbench results. This absence of comparative data means the analysis must rely on the specified architectural and theoretical performance metrics rather than measured workload outcomes.

For the NVIDIA RTX 5880 Ada Generation, the available benchmark data shows an average benchmark score of 45,972. Its percentile ranking against all GPUs is 85, indicating it sits above the majority of recorded graphics cards. Its nearest rivals in the database include the NVIDIA RTX A2000 with an average score of 46,043 and a delta of -0.2%, the Intel Arc A730M at 45,592 with a delta of 0.8%, the AMD Radeon Pro 5500 XT at 45,384 with a delta of 1.3%, and the AMD Radeon RX 5600M at 46,601 with a delta of -1.4%. These deltas show the RTX 5880 is tightly clustered with those cards, within a range of roughly 1.4% either way.

The individual PassMark scores for the RTX 5880 reveal its strengths. The G3D score is 25,096, the GPU compute score is 14,208, the G2D score is 777, and the DirectX 9 score is 335. The DirectX 11 score is 228, the DirectX 10 score is 167, and the DirectX 12 score is 70. The Geekbench OpenCL score is 326,898. These numbers indicate the card performs far better in modern graphics and compute workloads than in legacy DirectX 10 and 12 scenarios, a pattern consistent with its architecture.

The AMD Instinct MI300 has no recorded benchmarks, no average score, and no nearest rivals in the database. Its percentile versus all GPUs is listed at 50, but this is a default placement rather than a derived measurement. Without benchmark entries, the database offers no empirical comparison between the two cards. The theoretical figures must therefore serve as the primary basis for comparison.

Architecture Differences

The two accelerators diverge fundamentally in their design goals. The AMD Instinct MI300 uses the CDNA 3.0 architecture, built on the Aqua Vanjaram chip, and belongs to the Instinct (MIx) generation. It is manufactured by TSMC on a 5 nm process with 153,000 million transistors on a die size of 1017 mm², yielding a transistor density of 150.4M per mm². The NVIDIA RTX 5880 Ada Generation uses the Ada Lovelace architecture with the AD102 chip, belongs to the Workstation Ada (x000A) generation, and is also built by TSMC on 5 nm. It packs 76,300 million transistors on a 609 mm² die, giving a density of 125.3M per mm². The MI300 has more than twice the transistor count and a substantially larger die.

Memory architecture separates the two completely. The MI300 uses 128 GB of HBM3 on an 8192-bit bus, delivering 5.32 TB/s of bandwidth. The memory clock is 1300 MHz with 5.2 Gbps effective. The RTX 5880 uses 48 GB of GDDR6 on a 384-bit bus, delivering 864.0 GB/s, with a memory clock of 2250 MHz and 18 Gbps effective. The MI300 offers over six times the memory bandwidth and nearly three times the capacity.

The shading unit count is identical at 14,080 for both cards. However, the TMU counts differ: the MI300 has 880 TMUs while the RTX 5880 has 440. The MI300 has 0 ROPs and a pixel rate of 0 MPixel/s, indicating it is not designed for rasterized display output. The RTX 5880 has 176 ROPs, a pixel rate of 433.0 GPixel/s, and a texture rate of 1,082.4 GTexel/s versus the MI300's 1,496.0 GTexel/s.

The RTX 5880 includes 110 RT cores and 440 tensor cores, while the MI300 lists no RT cores and no tensor cores. The FP32 and FP16 performance figures are both 47.87 TFLOPS (1:1) for the MI300, while the RTX 5880 delivers 69.27 TFLOPS for both FP32 and FP16 (1:1). The NVIDIA card leads in raw floating-point throughput despite its smaller die and lower transistor count.

Clock speeds also differ. The MI300 runs at a 1000 MHz base and 1700 MHz boost. The RTX 5880 runs at 975 MHz base but boosts to 2460 MHz. The higher boost clock on the NVIDIA card contributes to its superior FP32 output.

Where Each One Wins

The AMD Instinct MI300 wins decisively in memory capacity and bandwidth. With 128 GB of HBM3 and 5.32 TB/s, it is built for large-scale data residency. Workloads that require holding massive datasets, such as large language model inference or scientific simulation, benefit directly from this capacity. The 8192-bit bus is unmatched by the RTX 5880's 384-bit bus and 864.0 GB/s. The MI300 also has a higher texture rate of 1,496.0 GTexel/s and double the TMU count, which aids texture-heavy compute tasks.

The MI300 also has a higher transistor density at 150.4M per mm² versus 125.3M per mm², indicating more logic per area. Its power connectors are 2x 8-pin with a suggested PSU of 1000 W, and its TDP is 600 W. It has no display outputs and no API support for DirectX, OpenGL, or Vulkan, which confirms its role as a pure compute accelerator rather than a graphics card.

The NVIDIA RTX 5880 Ada Generation wins in FP32 and FP16 compute, delivering 69.27 TFLOPS in both, which is approximately 45% higher than the MI300's 47.87 TFLOPS. It also has a much higher boost clock of 2460 MHz versus 1700 MHz. The RTX 5880 includes RT cores and tensor cores, enabling hardware-accelerated ray tracing and tensor operations, neither of which the MI300 offers. Its 176 ROPs and 433.0 GPixel/s pixel rate make it capable of rasterized graphics output, with 4x DisplayPort 1.4a connections.

The RTX 5880 has a lower TDP of 285 W versus 600 W, a single 16-pin connector, and a suggested PSU of 600 W. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300 has N/A for all three APIs. The RTX 5880 also has a higher percentile rank of 85 versus the MI300's 50, though this is based on measured benchmarks for the NVIDIA card and a default value for the AMD card.

Specification Differences

The two cards differ in nearly every major specification field. The MI300 uses CDNA 3.0 architecture, while the RTX 5880 uses Ada Lovelace. The MI300 has 153,000 million transistors on a 1017 mm² die; the RTX 5880 has 76,300 million on 609 mm². Transistor density is 150.4M per mm² versus 125.3M per mm².

Memory size is 128 GB HBM3 versus 48 GB GDDR6. Bus width is 8192 bit versus 384 bit. Bandwidth is 5.32 TB/s versus 864.0 GB/s. Memory clock is 1300 MHz with 5.2 Gbps effective versus 2250 MHz with 18 Gbps effective.

Base clocks are 1000 MHz versus 975 MHz. Boost clocks are 1700 MHz versus 2460 MHz. TMU counts are 880 versus 440. ROPs are 0 versus 176. The MI300 has no RT cores or tensor cores; the RTX 5880 has 110 RT cores and 440 tensor cores.

Pixel rate is 0 MPixel/s versus 433.0 GPixel/s. Texture rate is 1,496.0 GTexel/s versus 1,082.4 GTexel/s. FP32 is 47.87 TFLOPS versus 69.27 TFLOPS. FP16 is identical to each card's FP32 at 1:1.

TDP is 600 W versus 285 W. Power connectors are 2x 8-pin versus 1x 16-pin. Suggested PSU is 1000 W versus 600 W. Bus interface is PCIe 5.0 x16 versus PCIe 4.0 x16. Display outputs are none versus 4x DisplayPort 1.4a.

API support: the MI300 lists N/A for DirectX, OpenGL, and Vulkan. The RTX 5880 lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Slot width is not listed for the MI300, while the RTX 5880 is dual-slot. Dimensions are nearly identical: 267 mm length for both, 111 mm height for the MI300, and 112 mm for the RTX 5880.

Release dates are close, with the MI300 released on 2023-01-03 and the RTX 5880 on 2024-01-04. The MI300's predecessor is Radeon Instinct, while the RTX 5880's predecessor is Workstation Ampere. The RTX 5880 has a successor listed as Blackwell PRO W and its production status is Active. The MI300 has no successor and no production status listed.

FAQ

Q: Which card has more memory?

A: The AMD Instinct MI300 has 128 GB of HBM3, while the NVIDIA RTX 5880 Ada Generation has 48 GB of GDDR6.

Q: What is the memory bandwidth difference?

A: The MI300 delivers 5.32 TB/s over an 8192-bit bus, whereas the RTX 5880 delivers 864.0 GB/s over a 384-bit bus.

Q: Which card has higher FP32 compute?

A: The RTX 5880 has 69.27 TFLOPS of FP32, compared to the MI300's 47.87 TFLOPS.

Q: Does the MI300 support ray tracing?

A: No, the MI300 has no RT cores listed. The RTX 5880 has 110 RT cores.

Q: What are the power requirements?

A: The MI300 has a 600 W TDP and suggests a 1000 W PSU with 2x 8-pin connectors. The RTX 5880 has a 285 W TDP and suggests a 600 W PSU with a single 16-pin connector.

Q: Which card supports display output?

A: Only the RTX 5880 supports display output, with 4x DisplayPort 1.4a. The MI300 has no display outputs.

Q: What is the benchmark percentile for each?

A: The RTX 5880 ranks at the 85th percentile against all GPUs with an average benchmark score of 45,972. The MI300 has no recorded benchmarks and lists a default 50th percentile.

The Verdict

The data points to two different tools for two different jobs. The AMD Instinct MI300 is a massive memory-centric compute accelerator. Its 128 GB of HBM3 and 5.32 TB/s bandwidth are the defining characteristics. The 8192-bit bus and 600 W TDP indicate a card built to sit in a server and process large data sets without producing video output. The absence of RT cores, tensor cores, display outputs, and any graphics API support confirms this. It is not a graphics card.

The NVIDIA RTX 5880 Ada Generation is a workstation GPU with a full graphics feature set. It has display outputs, DirectX 12 Ultimate support, OpenGL 4.6, Vulkan 1.4, RT cores, and tensor cores. It delivers higher FP32 and FP16 compute at 69.27 TFLOPS, has a much higher boost clock of 2460 MHz, and does so at a lower TDP of 285 W. Its measured benchmark scores place it in the 85th percentile, and its nearest rivals are other GPUs in a tight performance band.

The MI300 cannot run graphics workloads, and the RTX 5880 cannot match the MI300's memory capacity or bandwidth. The MI300's 5.32 TB/s versus 864.0 GB/s is a gap of roughly 6.2 times. The RTX 5880's FP32 output is about 1.45 times the MI300's. The RTX 5880 has a PCIe 4.0 interface, while the MI300 uses PCIe 5.0 x16, which matters for data transfer to the host system.

For compute-heavy, memory-bound tasks with no display requirement, the MI300 is the obvious pick. For graphics, ray tracing, tensor workloads, and any scenario requiring a monitor output, the RTX 5880 is the only option with the necessary features. The MI300 requires a 1000 W PSU and dual 8-pin connectors, while the RTX 5880 needs only 600 W and a single 16-pin connector, making the NVIDIA card far easier to integrate into a workstation chassis.

The RTX 5880 has a successor listed as Blackwell PRO W and is marked as Active production status, while the MI300 has no successor and no production status. The MI300 is a specialized instrument for memory-heavy acceleration. The RTX 5880 is a general-purpose workstation GPU with strong compute and full graphics support. Choose based on the workload, not on raw numbers alone.