AMD Instinct MI300X vs Intel Arc B770 Comparison

The Verdict

The AMD Instinct MI300X and Intel Arc B770 occupy entirely different segments of the GPU market, and the recorded data confirms they should not be viewed as direct competitors. The MI300X is an accelerator designed for massive compute workloads, achieving a Geekbench OpenCL score of 317,994 and ranking in the 100th percentile among all GPUs in the database. The Arc B770, by contrast, is a conventional dual-slot graphics card with no benchmark scores recorded, placing it in the 50th percentile with an average score of 0.

The data indicates that the MI300X delivers approximately 4.2 times the FP32 throughput of the Arc B770, with 81.72 TFLOPS versus 19.66 TFLOPS. Its memory subsystem is similarly dominant, offering 192 GB of HBM3 with 5.32 TB/s of bandwidth compared to the Arc B770's 16 GB of GDDR6 at 512.0 GB/s. The MI300X also carries a 750 W TDP and requires a 1150 W suggested power supply, while the Arc B770 operates at 225 W with a 550 W suggested PSU.

For buyers seeking a high-end workstation or server accelerator, the MI300X is the only option between these two that has measured performance data. The Arc B770, with its 16 GB memory and 256-bit bus, is positioned as a consumer-oriented graphics card with display outputs and full DirectX 12 Ultimate support. The benchmark database shows no overlap in their measured capabilities, and the MI300X's nearest rivals are all NVIDIA data-center parts, not Intel consumer GPUs.

Architecture Differences

The two processors use fundamentally different architectures. The MI300X is built on CDNA 3.0, AMD's compute-focused architecture, while the Arc B770 uses Xe2-HPG, Intel's high-performance graphics architecture. The MI300X's chip is named Aqua Vanjaram, fabricated on a 5 nm process at TSMC with 153,000 million transistors on a 1017 mm² die. The Arc B770 uses the BMG-G31 chip, also on TSMC's 5 nm node, but with a 368 mm² die and unknown transistor count.

The MI300X implements 19,456 shading units, 1,216 texture mapping units, and zero ROPs, reflecting its compute-optimized design with no pixel output capability. It features a memory clock of 1300 MHz with 5.2 Gbps effective speed. The Arc B770 contains 4,096 shading units, 256 TMUs, 128 ROPs, and 32 ray tracing cores, giving it a full graphics pipeline. Its memory runs at 2000 MHz with 16 Gbps effective speed.

The architectures also differ in their FP16 handling. The MI300X achieves 81.72 TFLOPS FP16 with a 1:1 ratio to FP32, meaning it does not double-rate half-precision operations. The Arc B770 delivers 39.32 TFLOPS FP16 with a 2:1 ratio, indicating it processes FP16 at twice the rate of its FP32 throughput of 19.66 TFLOPS. The MI300X's texture rate is 2,553.6 GTexel/s versus 614.4 GTexel/s for the Arc B770, and the MI300X's pixel rate is 0 MPixel/s while the Arc B770 achieves 307.2 GPixel/s.

The MI300X uses an OAM module form factor with no power connectors and no display outputs. It exposes no graphics APIs, with DirectX, OpenGL, and Vulkan all listed as N/A. The Arc B770 is a dual-slot card with one 6-pin and one 8-pin power connector, supports 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs, and implements DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300X connects via PCIe 5.0 x16, while the Arc B770 uses PCIe 4.0 x16.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between the MI300X and Arc B770. The MI300X has a single recorded Geekbench OpenCL score of 317,994, while the Arc B770 has no benchmark entries. This absence of paired measurements means all performance comparisons must derive from the MI300X's nearest rivals in the database.

The MI300X's OpenCL score places it 5 percent behind the NVIDIA H200 NVL, which averages 334,891. It sits 8 percent behind the NVIDIA B200, which scores 345,482. Against the NVIDIA L40S, the MI300X is 7.5 percent ahead, and it leads the NVIDIA RTX 6000 Ada Generation by 10.7 percent. These deltas establish the MI300X's position in the upper tier of compute accelerators, with the B200 and H200 NVL slightly ahead and the L40S and RTX 6000 Ada trailing.

The Arc B770's lack of recorded benchmarks means its nearest rivals list is empty, and the database cannot place it relative to other cards. Its 50th percentile ranking with an average score of 0 reflects this absence of data rather than a measured performance level. The MI300X, in contrast, sits at the 100th percentile, indicating it outperforms all other GPUs in the database by this metric.

The FP32 compute gap is the clearest quantitative difference: the MI300X's 81.72 TFLOPS is 4.16 times the Arc B770's 19.66 TFLOPS. The memory bandwidth differential is even steeper, with the MI300X's 5.32 TB/s representing a 10.4 times advantage over the Arc B770's 512.0 GB/s. The MI300X's texture rate of 2,553.6 GTexel/s is 4.16 times the Arc B770's 614.4 GTexel/s, matching the FP32 ratio.

Specification Differences

The table below lists only the fields where the two products differ, based on the recorded database entries.

| Specification | AMD Instinct MI300X | Intel Arc B770 |

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

| Chip | Aqua Vanjaram | BMG-G31 |

| Architecture | CDNA 3.0 | Xe2-HPG |

| Generation | Instinct (MIx) | Battlemage (Arc 7) |

| Transistors | 153,000 million | unknown |

| Die Size | 1017 mm² | 368 mm² |

| Transistor Density | 150.4M / mm² | null |

| Base Clock | 1000 MHz | 2100 MHz |

| Boost Clock | 2100 MHz | 2400 MHz |

| Memory Clock | 1300 MHz 5.2 Gbps effective | 2000 MHz 16 Gbps effective |

| Memory Size | 192 GB | 16 GB |

| Memory Type | HBM3 | GDDR6 |

| Memory Bus Width | 8192 bit | 256 bit |

| Memory Bandwidth | 5.32 TB/s | 512.0 GB/s |

| Shading Units | 19,456 | 4,096 |

| TMUs | 1,216 | 256 |

| ROPs | 0 | 128 |

| RT Cores | null | 32 |

| Pixel Rate | 0 MPixel/s | 307.2 GPixel/s |

| Texture Rate | 2,553.6 GTexel/s | 614.4 GTexel/s |

| FP32 | 81.72 TFLOPS | 19.66 TFLOPS |

| FP16 | 81.72 TFLOPS (1:1) | 39.32 TFLOPS (2:1) |

| TDP | 750 W | 225 W |

| Slot Width | OAM Module | Dual-slot |

| Power Connectors | None | 1x 6-pin + 1x 8-pin |

| Suggested PSU | 1150 W | 550 W |

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

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

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

| OpenGL | N/A | 4.6 |

| Vulkan | N/A | 1.4 |

| Release Date | 2023-12-05 | 2025-12-31 |

| Predecessor | Radeon Instinct | Alchemist |

| Benchmarks | 317,994 (Geekbench OpenCL) | none |

| Percentile vs All GPUs | 100 | 50 |

| Average Benchmark Score | 317,994 | 0 |

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The AMD Instinct MI300X delivers 81.72 TFLOPS FP32, which is 4.16 times the Intel Arc B770's 19.66 TFLOPS.

Q: What memory configurations do the two cards use?

A: The MI300X uses 192 GB of HBM3 on an 8192-bit bus with 5.32 TB/s bandwidth. The Arc B770 uses 16 GB of GDDR6 on a 256-bit bus with 512.0 GB/s bandwidth.

Q: How does the MI300X compare to NVIDIA accelerators in the database?

A: The MI300X scores 317,994 in Geekbench OpenCL. It trails the NVIDIA H200 NVL (334,891) by 5 percent and the NVIDIA B200 (345,482) by 8 percent. It leads the NVIDIA L40S (295,763) by 7.5 percent and the NVIDIA RTX 6000 Ada Generation (287,237) by 10.7 percent.

Q: Does the Arc B770 have any recorded benchmark scores?

A: No. The database lists no benchmarks for the Arc B770, giving it an average score of 0 and a 50th percentile ranking. Its nearest rivals list is empty.

Q: What power delivery does each card require?

A: The MI300X has a 750 W TDP with no power connectors, as it uses an OAM module form factor, and requires a 1150 W suggested PSU. The Arc B770 has a 225 W TDP, uses one 6-pin and one 8-pin connector, and requires a 550 W suggested PSU.

Q: Which card supports display outputs and graphics APIs?

A: The Arc B770 supports 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs, along with DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300X has no display outputs and lists N/A for all graphics APIs.