AMD Radeon 860M vs NVIDIA B300 SXM6 AC Comparison

Head-to-Head Benchmarks

The single recorded head-to-head benchmark, Geekbench OpenCL, shows a decisive victory for the NVIDIA B300 SXM6 AC. The B300 scores 369,831 points against the AMD Radeon 860M's 22,759 points, a difference of 93.8 percent in favor of the NVIDIA part. This is not a marginal gap; the B300 delivers more than 16 times the raw compute throughput in this workload.

The AMD Radeon 860M also has a Geekbench Vulkan result of 30,043 points, but the B300 has no Vulkan score in the database, so a direct comparison in that API is not possible. The average benchmark score for the 860M is 26,401, which places it in the 72nd percentile of all GPUs. The B300's average score is 369,831, placing it in the 100th percentile, meaning it ranks above every other GPU in the database.

The B300's nearest rivals confirm its standing. It sits 7 percent ahead of the NVIDIA B200, 10.4 percent ahead of the NVIDIA H200 NVL, 16.3 percent ahead of the AMD Instinct MI300X, and 25 percent ahead of the NVIDIA L40S. These deltas show that the B300 is not merely faster than the integrated Radeon, it is also substantially ahead of the next tier of dedicated server accelerators.

The Radeon 860M, by contrast, is clustered tightly with a very different class of hardware. Its average score of 26,401 is within 1.1 percent of the NVIDIA RTX A4000 (26,683), 0.6 percent of the AMD Radeon RX 5700 XT 50th Anniversary (26,553), 0.3 percent of the NVIDIA GeForce RTX 5060 (26,331), and 0.1 percent of the NVIDIA GeForce MX550 (26,421). The Radeon's position in the 72nd percentile reflects a mid-pack result, while the B300's 100th percentile reflects a top-of-database result.

Architecture Differences

The two GPUs share little architecturally beyond being manufactured by TSMC. The AMD Radeon 860M uses a 4 nm process node, while the NVIDIA B300 SXM6 AC uses a 5 nm node. The Radeon is built on the RDNA 3.5 architecture with the Krackan Point chip and belongs to the Navi III IGP generation for Strix Point Mobile. The B300 uses the Blackwell Ultra architecture with the GB110 chip and belongs to the Server Blackwell generation.

The B300's die is 1,628 mm² and contains 208,000 million transistors, giving a transistor density of 127.8 million per square millimeter. The Radeon's transistor count and die size are listed as unknown in the database. The B300 is a massive server module, while the Radeon is an integrated graphics processor with no standalone slot width, listed simply as IGP.

Memory configurations diverge completely. The Radeon uses system shared memory with a system dependent bandwidth and no dedicated VRAM. The B300 carries 288 GB of HBM3e memory on an 8192 bit bus with 8.19 TB/s of bandwidth, running at 2000 MHz with 8 Gbps effective speed. The Radeon's memory clock is also system shared.

Compute resources show the scale difference. The B300 has 18,944 shading units, 592 texture mapping units, 24 ROPs, and 592 tensor cores. The Radeon has 512 shading units, 32 TMUs, 16 ROPs, and 8 ray tracing cores. The B300's tensor core count is 592, while the Radeon has no listed tensor cores. The B300 has no listed ray tracing cores, while the Radeon has 8.

Clock behavior differs in direction. The Radeon has a 600 MHz base clock and a 3000 MHz boost clock. The B300 has a 1665 MHz base clock and a 2032 MHz boost clock. The Radeon boosts to a much higher frequency, but the B300's massive parallel width compensates.

The B300's pixel rate is 48.77 GPixel/s versus the Radeon's 48.00 GPixel/s, nearly identical. Texture rate is where the B300 pulls ahead: 1,202.9 GTexel/s versus 96.00 GTexel/s. FP32 throughput is 76.99 TFLOPS for the B300 and 3.072 TFLOPS for the Radeon. FP16 is 76.99 TFLOPS for the B300 and 3.072 TFLOPS for the Radeon, both at 1:1 ratios.

Power requirements are in different leagues. The Radeon is rated at 15 W with no power connectors. The B300 is rated at 1100 W with a suggested PSU of 1500 W. The B300 uses an SXM module slot width, while the Radeon is an IGP. The B300's bus interface is PCIe 6.0 x16; the Radeon uses PCIe 4.0 x8.

API support differs. The Radeon supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The B300 lists N/A for DirectX, OpenGL, and Vulkan, reflecting its server-oriented design with no display outputs. The Radeon's display outputs are portable device dependent, while the B300 has no outputs.

Where Each One Wins

The B300 wins decisively in any scenario that demands raw compute throughput. Its 76.99 TFLOPS of FP32 and FP16 performance, 8.19 TB/s of memory bandwidth, and 288 GB of HBM3e capacity make it suited for large-scale data center workloads. The OpenCL result of 369,831 confirms this, and its position 7 percent above the B200 and 16.3 percent above the MI300X places it at the top of the server accelerator hierarchy.

The Radeon 860M wins in scenarios where power and integration matter. Its 15 W TDP, PCIe 4.0 x8 interface, and system shared memory design make it suitable for portable devices where discrete graphics are not an option. Its Vulkan score of 30,043 is notable, and its average score of 26,401 places it within 0.3 percent of the GeForce RTX 5060, a discrete part. The Radeon's 3000 MHz boost clock is the highest clock speed between the two, which helps it extract performance from a small 512-shader configuration.

The use cases are essentially disjoint. The B300 is a server module with no display outputs, no consumer API support, and a 1100 W power envelope. The Radeon is an integrated GPU for mobile systems with display outputs dependent on the host device. The B300's predecessor is listed as Server Hopper and its successor as Server Rubin, confirming its place in a data center product line. The Radeon's predecessor is Navi II IGP, and it has no successor listed.

FAQ

Q: How much faster is the NVIDIA B300 SXM6 AC than the AMD Radeon 860M in OpenCL?

A: The B300 scores 369,831 points versus 22,759 points for the Radeon, a 93.8 percent difference in favor of the B300.

Q: Where does the AMD Radeon 860M rank among all GPUs?

A: The Radeon sits in the 72nd percentile of all GPUs, with an average benchmark score of 26,401. Its nearest rival by average score is the NVIDIA GeForce MX550 at 26,421, a 0.1 percent difference.

Q: What is the NVIDIA B300 SXM6 AC's position relative to other server GPUs?

A: The B300 is in the 100th percentile of all GPUs. It is 7 percent ahead of the NVIDIA B200, 10.4 percent ahead of the NVIDIA H200 NVL, 16.3 percent ahead of the AMD Instinct MI300X, and 25 percent ahead of the NVIDIA L40S.

Q: Can the AMD Radeon 860M run Vulkan workloads?

A: Yes, the Radeon supports Vulkan 1.4 and has a Geekbench Vulkan score of 30,043. The B300 lists N/A for Vulkan support.

Q: What memory configurations do the two GPUs use?

A: The Radeon uses system shared memory with system dependent bandwidth. The B300 uses 288 GB of HBM3e on an 8192 bit bus with 8.19 TB/s bandwidth.

Q: Which GPU has a higher boost clock?

A: The AMD Radeon 860M has a 3000 MHz boost clock, while the NVIDIA B300 SXM6 AC has a 2032 MHz boost clock.

Specification Differences

| Specification | AMD Radeon 860M | NVIDIA B300 SXM6 AC |

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

| Architecture | RDNA 3.5 | Blackwell Ultra |

| Chip | Krackan Point | GB110 |

| Process Node | 4 nm | 5 nm |

| Transistors | unknown | 208,000 million |

| Die Size | unknown | 1628 mm² |

| Transistor Density | not listed | 127.8M / mm² |

| Base Clock | 600 MHz | 1665 MHz |

| Boost Clock | 3000 MHz | 2032 MHz |

| Memory Size | System Shared | 288 GB |

| Memory Type | System Shared | HBM3e |

| Memory Bus Width | System Shared | 8192 bit |

| Memory Bandwidth | System Dependent | 8.19 TB/s |

| Shading Units | 512 | 18944 |

| TMUs | 32 | 592 |

| ROPs | 16 | 24 |

| RT Cores | 8 | not listed |

| Tensor Cores | not listed | 592 |

| Pixel Rate | 48.00 GPixel/s | 48.77 GPixel/s |

| Texture Rate | 96.00 GTexel/s | 1,202.9 GTexel/s |

| FP32 | 3.072 TFLOPS | 76.99 TFLOPS |

| FP16 | 3.072 TFLOPS (1:1) | 76.99 TFLOPS (1:1) |

| TDP | 15 W | 1100 W |

| Slot Width | IGP | SXM Module |

| Suggested PSU | not listed | 1500 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 6.0 x16 |

| Display Outputs | Portable Device Dependent | No outputs |

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

| OpenGL | 4.6 | N/A |

| Vulkan | 1.4 | N/A |

| Release Date | 2025-02-28 | 2025-09-10 |

| Predecessor | Navi II IGP | Server Hopper |

| Successor | not listed | Server Rubin |

| Geekbench OpenCL | 22759 | 369831 |

| Geekbench Vulkan | 30043 | not listed |

| Percentile vs All GPUs | 72 | 100 |

| Avg Benchmark Score | 26401 | 369831 |

| Wins in Head-to-Head | 0 | 1 |