AMD Instinct MI300 vs Intel Arc B580 Comparison

The AMD Instinct MI300 and Intel Arc B580 occupy different corners of the hardware landscape, yet comparing them directly reveals how far apart their design goals are. The MI300 is a compute-oriented accelerator with a 50th percentile rank among all GPUs, while the Arc B580 sits at the 68th percentile. The most immediate divergence is in measured performance data: the database contains no benchmark scores for the MI300, giving it an average score of zero. The Arc B580, by contrast, has ten recorded benchmark results with an average score of 23,021. This means any comparison of raw performance is strictly one-sided, since the MI300 has no recorded measurements to analyze.

Head-to-Head Benchmarks

The Intel Arc B580 delivers all of the recorded benchmark data in this comparison. Its highest single score comes from the Geekbench Vulkan test at 109,672, followed by the Geekbench OpenCL result of 92,821. The PassMark G3D test produces a score of 15,748, while the PassMark GPU Compute test records 7,729. The remaining PassMark tests show lower figures: DirectX 11 scores 128, DirectX 9 scores 183, and both DirectX 10 and DirectX 12 score 76. The PassMark G2D test records 709.

The MI300 has no benchmark entries in the database, so its measured performance cannot be stated. Its percentile rank of 50 places it at the midpoint of the database's GPU distribution, but this is not supported by any actual test scores. The Arc B580's 68th percentile is backed by its ten recorded scores.

The nearest rivals for the Arc B580 provide context for its average score. The AMD Radeon RX 580 2048SP averages 23,061, which is 0.2% higher than the Arc B580's 23,021. The NVIDIA GeForce RTX 2080 averages 22,895, putting it 0.6% behind the Arc B580. The NVIDIA GeForce RTX 3080 averages 23,172, which is 0.7% ahead, and the NVIDIA P106-100 averages 23,249, 1% ahead. These deltas are all within a single percentage point, indicating that the Arc B580's average score sits in a tightly clustered group of rivals.

The Verdict

The data supports a clear separation of roles. The Intel Arc B580 is the only one of the two with measurable benchmark results, and its scores place it in the 68th percentile of all GPUs in the database. Its average score of 23,021 is nearly identical to the AMD Radeon RX 580 2048SP, which trails by only 0.2%. The Arc B580 also edges out the NVIDIA GeForce RTX 2080 by 0.6%. This suggests the Arc B580 belongs in a performance tier alongside those cards, based on the recorded data.

The AMD Instinct MI300 has no benchmark scores, so the database cannot confirm any performance level for it. Its 50th percentile rank is unverified by measurements. The MI300 is a compute accelerator with no display outputs and no graphics API support, so it is not designed for the same workloads as the Arc B580, which supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The Arc B580 is the clear choice for any application that requires recorded benchmark validation, graphics output, or standard API compatibility.

FAQ

Q: What is the average benchmark score for the Intel Arc B580?

A: The Arc B580 has an average benchmark score of 23,021 across ten recorded tests.

Q: Does the AMD Instinct MI300 have any recorded benchmark scores?

A: No, the MI300 has an empty benchmark array and an average score of zero in the database.

Q: How does the Arc B580 compare to the NVIDIA GeForce RTX 3080?

A: The RTX 3080 has an average score of 23,172, which is 0.7% higher than the Arc B580's 23,021.

Q: What is the percentile rank of each GPU?

A: The MI300 is at the 50th percentile of all GPUs, while the Arc B580 is at the 68th percentile.

Q: Which API does the MI300 support?

A: The MI300 lists DirectX, OpenGL, and Vulkan as N/A, meaning no graphics API support is recorded.

Q: What is the Arc B580's closest rival by average score?

A: The AMD Radeon RX 580 2048SP has an average score of 23,061, just 0.2% higher than the Arc B580.

Specification Differences

The two cards differ in nearly every measurable specification. The MI300 uses an 8192-bit memory bus with 128 GB of HBM3 memory, while the Arc B580 uses a 192-bit bus with 12 GB of GDDR6. Memory bandwidth is 5.32 TB/s for the MI300 versus 456.0 GB/s for the Arc B580. The MI300 has 14,080 shading units, 880 texture mapping units, and no ROPs, giving it a pixel rate of 0 MPixel/s and a texture rate of 1,496.0 GTexel/s. The Arc B580 has 2,560 shading units, 160 TMUs, and 80 ROPs, with a pixel rate of 213.6 GPixel/s and a texture rate of 427.2 GTexel/s.

Clock speeds diverge sharply. The MI300 runs at a base clock of 1000 MHz and a boost clock of 1700 MHz, while the Arc B580 runs at a base and boost clock of 2670 MHz. The FP32 throughput is 47.87 TFLOPS for the MI300 and 13.67 TFLOPS for the Arc B580. FP16 performance is 47.87 TFLOPS at a 1:1 ratio for the MI300 and 27.34 TFLOPS at a 2:1 ratio for the Arc B580. The MI300 has a TDP of 600 W with a suggested PSU of 1000 W and two 8-pin power connectors. The Arc B580 has a TDP of 190 W with a suggested PSU of 450 W and a single 8-pin connector. The MI300 uses a PCIe 5.0 x16 interface, while the Arc B580 uses PCIe 4.0 x8. The MI300 has no display outputs, while the Arc B580 offers 1x HDMI 2.1a and 3x DisplayPort 2.1.

Architecture Differences

The MI300 is built on the CDNA 3.0 architecture with the Aqua Vanjaram chip, while the Arc B580 uses the Xe2-HPG architecture with the BMG-G21 chip. Both are fabricated on a 5 nm process at TSMC, but the transistor counts differ enormously. The MI300 packs 153,000 million transistors on a 1017 mm² die, giving a transistor density of 150.4M per mm². The Arc B580 has 19,600 million transistors on a 272 mm² die, yielding 72.1M per mm². The MI300's die is nearly four times larger in area and holds almost eight times as many transistors.

The MI300 belongs to the Instinct (MIx) generation and was released on January 3, 2023, succeeding the Radeon Instinct line. The Arc B580 belongs to the Battlemage (Arc 5) generation and was released on December 12, 2024, succeeding the Alchemist line. The MI300 has no RT cores listed, while the Arc B580 has 20. The MI300 has no recorded production status, while the Arc B580 is marked as Active. The MI300 measures 267 mm in length and 111 mm in height. The Arc B580 measures 272 mm in length, 115 mm in height, and 45 mm in width, and it is a dual-slot card. The MI300's slot width is not listed.

Where Each One Wins

The Intel Arc B580 wins in every category where recorded data exists. Its benchmark scores cover multiple test suites, including Geekbench OpenCL and Vulkan, PassMark G3D, and PassMark GPU Compute, all of which are absent for the MI300. The Arc B580 also wins on graphics capability, with DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support, plus four display outputs. Its 80 ROPs and 213.6 GPixel/s pixel rate confirm it can drive rendered frames to a screen, something the MI300 cannot do with zero ROPs and no outputs.

The AMD Instinct MI300 wins on compute-oriented specifications. Its FP32 throughput of 47.87 TFLOPS is roughly 3.5 times the Arc B580's 13.67 TFLOPS. Its FP16 throughput of 47.87 TFLOPS at a 1:1 ratio exceeds the Arc B580's 27.34 TFLOPS at a 2:1 ratio. The MI300's 5.32 TB/s memory bandwidth is over ten times the Arc B580's 456.0 GB/s, and its 128 GB of HBM3 memory dwarfs the 12 GB GDDR6 on the Arc B580. The MI300 also has a larger texture rate at 1,496.0 GTexel/s versus 427.2 GTexel/s. These are raw capability figures, not measured performance, but they indicate a device built for memory-bound and compute-heavy tasks rather than graphics output. The data shows two very different devices: one with no measured benchmarks but massive compute and memory specifications, and one with a full set of recorded scores, graphics features, and display support.