AMD Instinct MI325X vs Intel Arc B580 Comparison

Head-to-Head Benchmarks

Direct benchmark comparisons between the AMD Instinct MI325X and Intel Arc B580 are not available in the recorded data. The MI325X has no benchmark entries, while the Arc B580 has ten recorded tests. This makes a traditional head-to-head score comparison impossible. Instead, the data shows what each product is designed to do and where its measurable performance sits relative to established GPUs.

The Intel Arc B580 delivers an average benchmark score of 23,021 across its test suite. Its strongest result comes from Geekbench Vulkan at 109,672, followed by Geekbench OpenCL at 92,821. PassMark G3D shows 15,748, and PassMark GPU Compute reaches 7,729. The remaining PassMark tests are lower: DirectX 9 at 183, DirectX 11 at 128, DirectX 10 at 76, DirectX 12 at 76, and G2D at 709. The 3DMark Steel Nomad DX12 score sits at 3,068.

The Arc B580's nearest rivals in the database provide context. The AMD Radeon RX 580 2048SP scores 23,061, which is 0.2% above the Arc B580. The NVIDIA GeForce RTX 2080 scores 22,895, 0.6% below the Arc B580. The NVIDIA GeForce RTX 3080 scores 23,172, 0.7% above it. The NVIDIA P106-100 scores 23,249, 1% above it. These deltas are tight, placing the Arc B580 in a narrow performance band where four different GPUs land within a 1.5% spread of each other.

The MI325X has no benchmark scores and no nearest rivals in the database. Its percentile rank of 50 places it at the midpoint of all recorded GPUs, but this is not derived from any test results. The Arc B580 holds a percentile rank of 68, indicating it outperforms a majority of GPUs in the database. Without MI325X benchmark data, any performance comparison must rely on architectural specifications and the distinct workloads each product targets.

Architecture Differences

The MI325X uses the Aqua Vanjaram chip built on CDNA 3.0 architecture, fabricated by TSMC on a 5 nm process. It contains 153,000 million transistors on a 1,017 mm² die, yielding a transistor density of 150.4 million per mm². The chip includes 19,456 shading units, 1,216 texture mapping units, and zero ROPs. Pixel rate is recorded as 0 MPixel/s, while texture rate reaches 2,553.6 GTexel/s. FP32 performance is 81.72 TFLOPS, with FP16 also at 81.72 TFLOPS at a 1:1 ratio. The base clock is 1,000 MHz and boost clock is 2,100 MHz. Memory runs at 1,500 MHz with 6 Gbps effective speed.

The Arc B580 uses the BMG-G21 chip built on Xe2-HPG architecture, also fabricated by TSMC on a 5 nm process. It contains 19,600 million transistors on a 272 mm² die, yielding a transistor density of 72.1 million per mm². The chip includes 2,560 shading units, 160 texture mapping units, 80 ROPs, and 20 ray tracing cores. Pixel rate reaches 213.6 GPixel/s, texture rate is 427.2 GTexel/s. FP32 performance is 13.67 TFLOPS, while FP16 reaches 27.34 TFLOPS at a 2:1 ratio. Base and boost clocks are both 2,670 MHz. Memory runs at 2,375 MHz with 19 Gbps effective speed.

Memory configurations differ dramatically. The MI325X uses 256 GB of HBM3e on an 8,192-bit bus, delivering 6.14 TB/s of bandwidth. The Arc B580 uses 12 GB of GDDR6 on a 192-bit bus, delivering 456.0 GB/s. The MI325X's memory bandwidth is more than ten times higher, and its capacity is over twenty times larger. The Arc B580 offers display outputs with 1x HDMI 2.1a and 3x DisplayPort 2.1, while the MI325X has no display outputs. The MI325X supports PCIe 5.0 x16, while the Arc B580 uses PCIe 4.0 x8.

API support also diverges. The Arc B580 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI325X records N/A for DirectX, OpenGL, and Vulkan. This reflects their different purposes: the MI325X is an OAM module compute accelerator, while the Arc B580 is a dual-slot consumer graphics card.

Power requirements differ substantially. The MI325X has a TDP of 1,000 W with no power connectors and a suggested PSU of 1,400 W. The Arc B580 has a TDP of 190 W, uses a single 8-pin connector, and requires a suggested PSU of 450 W. Physical dimensions: the Arc B580 is 272 mm long, 115 mm tall, and 45 mm wide. The MI325X lists no physical dimensions.

Where Each One Wins

The MI325X wins on compute throughput and memory capacity. Its 81.72 TFLOPS FP32 output is roughly six times the Arc B580's 13.67 TFLOPS. Texture rate is nearly six times higher at 2,553.6 GTexel/s versus 427.2 GTexel/s. Memory bandwidth of 6.14 TB/s versus 456.0 GB/s gives the MI325X a massive advantage for data movement. The 256 GB capacity allows working sets that the 12 GB Arc B580 cannot hold. The 1:1 FP16 ratio on the MI325X means FP16 workloads run at the same speed as FP32, whereas the Arc B580's 2:1 ratio halves FP16 throughput relative to FP32. The MI325X also uses PCIe 5.0 x16 versus the Arc B580's PCIe 4.0 x8, doubling the host interface bandwidth.

The Arc B580 wins on rasterization and graphics features. Its 80 ROPs and 213.6 GPixel/s pixel rate enable actual display output and traditional rendering, while the MI325X records zero ROPs and zero pixel rate. The Arc B580 includes 20 ray tracing cores, which the MI325X lacks entirely. The Arc B580 supports modern graphics APIs including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI325X supports none of these. The Arc B580 is an active production product with a release date of December 2024, while the MI325X has no production status listed.

The Arc B580 also wins on power efficiency. Its 190 W TDP delivers 13.67 TFLOPS, while the MI325X consumes 1,000 W for 81.72 TFLOPS. Normalized, the Arc B580 produces roughly 72 TFLOPS per kilowatt, while the MI325X produces roughly 82 TFLOPS per kilowatt. The Arc B580's advantage is less dramatic when normalized, but its absolute power draw is far lower. The suggested PSU of 450 W versus 1,400 W reflects this gap.

Release timing differs by about two months. The MI325X launched on October 9, 2024, while the Arc B580 launched on December 12, 2024. The MI325X's predecessor is Radeon Instinct, while the Arc B580's predecessor is Alchemist.

The Verdict

The data shows two products with no overlapping use cases. The AMD Instinct MI325X is a compute accelerator with no display outputs, no graphics API support, and a 1,000 W power envelope. It targets workloads that need massive memory capacity, enormous bandwidth, and high FP32/FP16 throughput. The 256 GB HBM3e pool and 6.14 TB/s bandwidth are designed for large model inference and training, scientific computing, and data center workloads. The 1:1 FP16 ratio indicates the MI325X treats FP16 as a first-class datatype, which matters for AI workloads where FP16 precision is common.

The Intel Arc B580 is a consumer graphics card with display outputs, ray tracing cores, full graphics API support, and a 190 W power envelope. Its benchmark results place it within 1% of the NVIDIA GeForce RTX 3080 and RTX 2080 in the database, with a 68th percentile rank. It is suitable for gaming, content creation, and general desktop graphics work. The 12 GB GDDR6 memory and 456.0 GB/s bandwidth serve mainstream resolutions and settings.

The MI325X's lack of benchmark data means the database cannot rank it numerically against other GPUs. Its 50th percentile rank is a default value, not a measured result. The Arc B580's 68th percentile is derived from actual test scores. This distinction matters: one product has verified performance, the other does not.

For a builder assembling a gaming PC, the Arc B580 is the only viable choice from these two. It provides display connectivity, supports modern APIs, and fits in a standard dual-slot form factor. The MI325X cannot output video and lacks graphics drivers for consumer APIs. For a data center operator deploying compute accelerators, the MI325X offers specifications that the Arc B580 cannot approach: 256 GB memory, 6.14 TB/s bandwidth, and 81.72 TFLOPS FP32. The Arc B580's 12 GB and 456.0 GB/s are not in the same class.

The suggested PSU requirements reinforce the divide. A 450 W PSU suffices for the Arc B580, while the MI325X demands 1,400 W. The MI325X uses no power connectors because it is an OAM module, likely powered through the host board. The Arc B580 uses a standard 8-pin connector.

FAQ

Q: Which GPU has higher raw compute performance?

A: The AMD Instinct MI325X delivers 81.72 TFLOPS FP32, while the Intel Arc B580 delivers 13.67 TFLOPS FP32. The MI325X is roughly six times faster in FP32 throughput.

Q: How does the Arc B580 compare to its nearest rivals?

A: The Arc B580 scores 23,021 average. The AMD Radeon RX 580 2048SP scores 23,061 (0.2% higher), the NVIDIA GeForce RTX 2080 scores 22,895 (0.6% lower), the NVIDIA GeForce RTX 3080 scores 23,172 (0.7% higher), and the NVIDIA P106-100 scores 23,249 (1% higher).

Q: Can the MI325X output video to a display?

A: No. The MI325X has no display outputs and supports no graphics APIs (DirectX, OpenGL, Vulkan all N/A). The Arc B580 has 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs.

Q: What memory configurations do these GPUs use?

A: The MI325X uses 256 GB of HBM3e on an 8,192-bit bus with 6.14 TB/s bandwidth. The Arc B580 uses 12 GB of GDDR6 on a 192-bit bus with 456.0 GB/s bandwidth.

Q: Which GPU has ray tracing support?

A: The Intel Arc B580 has 20 ray tracing cores. The AMD Instinct MI325X records no ray tracing cores.

Q: What are the power requirements for each?

A: The MI325X has a 1,000 W TDP and requires a suggested PSU of 1,400 W, with no power connectors. The Arc B580 has a 190 W TDP, uses a single 8-pin connector, and requires a suggested PSU of 450 W.

Specification Differences

| Specification | AMD Instinct MI325X | Intel Arc B580 |

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

| Chip | Aqua Vanjaram | BMG-G21 |

| Architecture | CDNA 3.0 | Xe2-HPG |

| Generation | Instinct (MIx) | Battlemage (Arc 5) |

| Process Node | 5 nm (TSMC) | 5 nm (TSMC) |

| Transistors | 153,000 million | 19,600 million |

| Die Size | 1,017 mm² | 272 mm² |

| Transistor Density | 150.4M / mm² | 72.1M / mm² |

| Base Clock | 1,000 MHz | 2,670 MHz |

| Boost Clock | 2,100 MHz | 2,670 MHz |

| Memory Clock | 1,500 MHz (6 Gbps effective) | 2,375 MHz (19 Gbps effective) |

| Memory Size | 256 GB | 12 GB |

| Memory Type | HBM3e | GDDR6 |

| Memory Bus Width | 8,192 bit | 192 bit |

| Memory Bandwidth | 6.14 TB/s | 456.0 GB/s |

| Shading Units | 19,456 | 2,560 |

| TMUs | 1,216 | 160 |

| ROPs | 0 | 80 |

| Ray Tracing Cores | None | 20 |

| Pixel Rate | 0 MPixel/s | 213.6 GPixel/s |

| Texture Rate | 2,553.6 GTexel/s | 427.2 GTexel/s |

| FP32 Performance | 81.72 TFLOPS | 13.67 TFLOPS |

| FP16 Performance | 81.72 TFLOPS (1:1) | 27.34 TFLOPS (2:1) |

| TDP | 1,000 W | 190 W |

| Slot Width | OAM Module | Dual-slot |

| Power Connectors | None | 1x 8-pin |

| Suggested PSU | 1,400 W | 450 W |

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

| Display Outputs | No outputs | 1x HDMI 2.1a, 3x DisplayPort 2.1 |

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

| OpenGL Support | N/A | 4.6 |

| Vulkan Support | N/A | 1.4 |

| Dimensions | Not listed | 272 mm x 115 mm x 45 mm |

| Production Status | Not listed | Active |

| Release Date | 2024-10-09 | 2024-12-12 |

| Predecessor | Radeon Instinct | Alchemist |

| Launch MSRP | None listed | 249 USD |