AMD Instinct MI300X vs Intel Arc B580 Comparison

Head-to-Head Benchmarks

The recorded database contains one directly comparable benchmark between the AMD Instinct MI300X and the Intel Arc B580: the Geekbench OpenCL test. The results show a decisive separation in raw compute throughput. The AMD Instinct MI300X scores 317,994 points, while the Intel Arc B580 scores 92,821 points. The delta is 242.6% in favor of the AMD part. This means the MI300X delivers roughly three and a half times the OpenCL performance of the B580, a margin that reflects their entirely different design objectives.

Looking at the broader database context, the MI300X sits at the 100th percentile of all GPUs, meaning it outperforms every other recorded GPU in the database on average. Its nearest rivals in the database include the NVIDIA B200 at 345,482 average score, the NVIDIA H200 NVL at 334,891, the NVIDIA L40S at 295,763, and the NVIDIA RTX 6000 Ada Generation at 287,237. The MI300X trails the B200 by 8% and the H200 NVL by 5%, but it leads the L40S by 7.5% and the RTX 6000 Ada by 10.7%. These deltas place the MI300X in the upper tier of data-center accelerators, even if it does not hold the absolute top spot.

The Intel Arc B580, by contrast, sits at the 68th percentile of all GPUs. Its average benchmark score across all recorded tests is 23,021. Its nearest rivals are tightly clustered: the AMD Radeon RX 580 2048SP averages 23,061 (a delta of -0.2% against the B580), the NVIDIA GeForce RTX 3080 averages 23,172 (-0.7%), the NVIDIA P106-100 averages 23,249 (-1%), and the NVIDIA GeForce RTX 2080 averages 22,895 (+0.6%). The B580 is therefore essentially matched with these older or lower-tier cards in overall average score, with deltas under one percent in either direction. This is a much narrower competitive band than the MI300X occupies.

The B580 does have multiple recorded benchmark entries beyond OpenCL. Its 3DMark Steel Nomad DX12 score is 3,068. In Vulkan, it records 109,672 on Geekbench. Passmark results include a DirectX 10 score of 76, DirectX 11 score of 128, DirectX 12 score of 76, DirectX 9 score of 183, G2D score of 709, G3D score of 15,748, and GPU compute score of 7,729. These results are not directly comparable to the MI300X because the database does not list matching tests for the AMD part. The only shared test is Geekbench OpenCL, and that comparison is unambiguous.

The MI300X has no recorded DirectX, Vulkan, or OpenGL API support at all. Its API fields are marked N/A for DirectX, OpenGL, and Vulkan. This is consistent with a compute-oriented accelerator that has no display outputs. The B580, in contrast, supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and includes one HDMI 2.1a port and three DisplayPort 2.1 outputs. The OpenCL comparison therefore measures compute capability only, and it strongly favors the MI300X.

The Verdict

The data indicates that these two products are not competitors in any practical sense. The AMD Instinct MI300X is a data-center accelerator aimed at high-throughput compute workloads. The Intel Arc B580 is a consumer graphics card with display outputs and a full graphics API feature set. The 242.6% OpenCL delta is the only head-to-head metric, and it is overwhelming. The MI300X also carries a 100th percentile ranking across all GPUs, while the B580 sits at the 68th percentile. Any user selecting between these two based on the recorded data would be choosing between a specialized compute device and a general-purpose graphics card.

The MI300X uses 153,000 million transistors on a 1017 mm² die, fabricated on a 5 nm TSMC process. The B580 uses 19,600 million transistors on a 272 mm² die, also on a 5 nm TSMC process. The transistor density numbers reflect their different design philosophies: the MI300X packs 150.4 million transistors per square millimeter, while the B580 achieves 72.1 million per square millimeter. The MI300X is built for scale, with 192 GB of HBM3 memory on an 8192-bit bus delivering 5.32 TB/s of bandwidth. The B580 uses 12 GB of GDDR6 on a 192-bit bus for 456.0 GB/s. The memory systems are in different performance classes, and the benchmark scores align with that.

Where Each One Wins

The AMD Instinct MI300X wins in raw compute throughput. Its Geekbench OpenCL score of 317,994 is the sole recorded benchmark, and it is the only head-to-head win in the database. The card is designed for workloads that demand massive memory capacity and bandwidth: 192 GB of HBM3 and 5.32 TB/s are the largest memory figures in this comparison. Its FP32 throughput is 81.72 TFLOPS, and FP16 is also 81.72 TFLOPS at a 1:1 ratio. The B580's FP32 is 13.67 TFLOPS, and FP16 is 27.34 TFLOPS at a 2:1 ratio. The MI300X delivers roughly six times the FP32 throughput and three times the FP16 throughput, though exact ratios are not directly stated in the database beyond the FP32 figures.

The Intel Arc B580 wins in every category related to graphics and consumer usability. It has a full set of display outputs, support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and a dual-slot form factor with a single 8-pin power connector. Its pixel rate is 213.6 GPixel/s, and its texture rate is 427.2 GTexel/s. The MI300X has a pixel rate of 0 MPixel/s and a texture rate of 2,553.6 GTexel/s, but it has no display outputs and no graphics API support. The B580 also has 20 ray tracing cores, while the MI300X lists no RT cores. For any workload that involves rendering, display output, or graphics APIs, the B580 is the only option with recorded support.

The B580's average benchmark score of 23,021 is low compared to the MI300X, but that average includes graphics tests such as Passmark DirectX and G2D, which the MI300X cannot run. The B580's 3DMark Steel Nomad DX12 score of 3,068 and Vulkan score of 109,672 indicate meaningful graphics capability. The MI300X has no equivalent recorded scores, so the data cannot quantify its graphics performance. It simply does not offer those features.

FAQ

Q: Which GPU has the higher Geekbench OpenCL score?

A: The AMD Instinct MI300X scores 317,994, while the Intel Arc B580 scores 92,821. The MI300X leads by 242.6%.

Q: How does the AMD Instinct MI300X compare to its nearest rivals in the database?

A: The MI300X trails the NVIDIA B200 by 8% and the NVIDIA H200 NVL by 5%. It leads the NVIDIA L40S by 7.5% and the NVIDIA RTX 6000 Ada Generation by 10.7%.

Q: What is the Intel Arc B580's closest competitor in the database?

A: The AMD Radeon RX 580 2048SP averages 23,061, a delta of -0.2% against the B580's 23,021. The NVIDIA GeForce RTX 3080 is also close at 23,172, a delta of -0.7%.

Q: Does the Intel Arc B580 support display outputs?

A: Yes. The B580 has one HDMI 2.1a port and three DisplayPort 2.1 outputs. The MI300X has no display outputs.

Q: What is the memory configuration of each GPU?

A: The MI300X has 192 GB of HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The B580 has 12 GB of GDDR6 on a 192-bit bus with 456.0 GB/s bandwidth.

Q: What graphics API support does each GPU have?

A: The B580 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300X lists N/A for DirectX, OpenGL, and Vulkan.

Architecture Differences

The AMD Instinct MI300X uses the CDNA 3.0 architecture on the Aqua Vanjaram chip, part of the Instinct (MIx) generation. The Intel Arc B580 uses the Xe2-HPG architecture on the BMG-G21 chip, part of the Battlemage (Arc 5) generation. Both are fabricated on a 5 nm TSMC process, but the similarities end there.

The MI300X is a massive compute accelerator: 153,000 million transistors on a 1017 mm² die, yielding a transistor density of 150.4 million per square millimeter. The B580 is far smaller: 19,600 million transistors on a 272 mm² die, with a density of 72.1 million per square millimeter. The MI300X has 19,456 shading units and 1,216 texture mapping units, but no ROPs, no ray tracing cores, and no tensor cores listed. Its pixel rate is 0 MPixel/s, and its texture rate is 2,553.6 GTexel/s. The B580 has 2,560 shading units, 160 TMUs, 80 ROPs, and 20 ray tracing cores. Its pixel rate is 213.6 GPixel/s, and its texture rate is 427.2 GTexel/s.

Clock speeds differ substantially. The MI300X runs at a base clock of 1000 MHz and a boost clock of 2100 MHz, with memory at 1300 MHz (5.2 Gbps effective). The B580 runs at a constant 2670 MHz for both base and boost, with memory at 2375 MHz (19 Gbps effective). The B580's higher clocks and graphics-specific units explain its ability to render and output video, while the MI300X's massive memory subsystem and shading unit count drive its compute lead.

The MI300X has a TDP of 750 W and is an OAM module with no power connectors and a suggested PSU of 1150 W. The B580 has a TDP of 190 W, uses a dual-slot design with one 8-pin power connector, and a suggested PSU of 450 W. The MI300X connects via PCIe 5.0 x16, while the B580 uses PCIe 4.0 x8. The MI300X has no display outputs; the B580 includes one HDMI 2.1a and three DisplayPort 2.1 outputs.

Release dates also separate the two. The MI300X was released on December 5, 2023, with a predecessor of Radeon Instinct. The B580 was released on December 12, 2024, with a predecessor of Alchemist. The MI300X has no launch MSRP recorded, while the B580 has a launch MSRP of 249 USD. The MI300X is a compute-only accelerator with no graphics output and no API support for rendering, while the B580 is an active consumer graphics product with full API coverage and a compact physical footprint of 272 mm in length, 115 mm in height, and 45 mm in width.