AMD Radeon 780M vs Intel Arc Pro B65 Comparison

Head-to-Head Benchmarks

The recorded data for this comparison is incomplete on one side. The AMD Radeon 780M has three benchmark entries in the database: 3dmark_3dmark_steel_nomad_dx12 at 480 points, geekbench_opencl at 18602 points, and geekbench_vulkan at 33683 points. Its average benchmark score sits at 17588. The Intel Arc Pro B65 has no recorded benchmark scores, leaving its average at 0. This absence of data makes a direct head-to-head numerical comparison impossible for the Intel part.

The AMD Radeon 780M's average score of 17588 places it at the 61st percentile among all GPUs in the database. Its nearest rivals show a tight cluster of results. The AMD Radeon Pro 560 scores 17551, which is 0.2% behind the 780M. The NVIDIA GeForce RTX 4060 scores 17639, putting it 0.3% ahead of the 780M. The AMD Radeon HD 7790 scores 17666, 0.4% ahead. The AMD Radeon Pro 460 scores 17509, 0.5% behind. These deltas are all within a single percentage point, indicating the 780M sits in a densely packed performance band.

The Intel Arc Pro B65 has no benchmark entries and no nearest rivals listed. The database records a 50th percentile position for it, but this figure cannot be corroborated by any individual test scores. The 780M's 61st percentile, by contrast, is supported by its three recorded test results.

For the 780M, the Geekbench Vulkan score of 33683 is substantially higher than its OpenCL score of 18602. This indicates the RDNA 3.0 architecture responds particularly well to the Vulkan API in this test. The Steel Nomad DX12 result of 480 is a separate workload and cannot be directly compared to the Geekbench numbers due to different test methodologies.

Architecture Differences

The two GPUs come from different manufacturers and use different process nodes. The AMD Radeon 780M uses the Phoenix chip built on RDNA 3.0 architecture, fabricated by TSMC on a 4 nm process. It belongs to the Navi III IGP generation. The Intel Arc Pro B65 uses the BMG-G21 chip built on Xe2-HPG architecture, also fabricated by TSMC but on a 5 nm process. It belongs to the Battlemage Pro Series generation.

Transistor counts differ significantly. The 780M packs 25,390 million transistors on a 178 mm² die, yielding a transistor density of 142.6 million transistors per square millimeter. The Arc Pro B65 contains 19,600 million transistors on a larger 272 mm² die, resulting in a density of 72.1 million transistors per square millimeter. The 780M achieves nearly double the transistor density despite having fewer total transistors.

Core configurations diverge sharply. The 780M uses 768 shading units, 48 texture mapping units, 32 ROPs, and 12 ray tracing cores. The Arc Pro B65 uses 2560 shading units, 160 TMUs, 80 ROPs, and 20 ray tracing cores. In every category, the Intel part has more hardware units, with shading units more than tripling the AMD count.

Memory configurations could not be more different. The 780M uses system shared memory, meaning its size, type, bus width, and bandwidth are all system dependent. The Arc Pro B65 has 32 GB of dedicated GDDR6 memory on a 256-bit bus, delivering 608.0 GB/s of bandwidth. Its memory runs at 2375 MHz with 19 Gbps effective transfer rate. This dedicated memory arrangement gives the Intel part a substantial advantage in memory bandwidth availability.

Clock behavior also contrasts. The 780M has an 800 MHz base clock and a 2900 MHz boost clock, a wide boost range typical of an integrated GPU that scales with thermal headroom. The Arc Pro B65 runs at a flat 2400 MHz for both base and boost, indicating a fixed clock strategy.

The 780M is an integrated graphics processor with a 15 W TDP, no power connectors, and a slot width designated as IGP. The Arc Pro B65 is a dual-slot discrete card with a 200 W TDP, a single 8-pin power connector, and a suggested PSU of 550 W. The bus interfaces differ as well: PCIe 4.0 x8 for the AMD part versus PCIe 5.0 x16 for the Intel part.

Display outputs follow the same pattern. The 780M relies on motherboard-dependent outputs since it is an IGP. The Arc Pro B65 provides 4x DisplayPort 2.1 outputs.

Where Each One Wins

The AMD Radeon 780M wins in the only category where comparative data exists: recorded benchmark scores. Its average of 17588 is backed by three test results, and its 61st percentile ranking reflects measurable performance. The Vulkan score of 33683 is its strongest recorded result, suggesting the architecture handles Vulkan workloads well. Its 15 W TDP also places it in a power envelope that allows integration into compact systems, though the database does not provide comparative power efficiency metrics for the Intel part.

The Intel Arc Pro B65 wins on paper specifications that indicate capability in memory-intensive and compute-heavy workloads. Its 32 GB GDDR6 memory with 608.0 GB/s bandwidth is a massive advantage over system shared memory, particularly for applications that need large working sets or high bandwidth. Its 2560 shading units, 160 TMUs, and 80 ROPs suggest higher raw throughput potential. Its FP32 rate of 12.29 TFLOPS exceeds the 780M's 8.909 TFLOPS. Its FP16 rate of 24.58 TFLOPS at a 2:1 ratio more than doubles the 780M's 8.909 TFLOPS at a 1:1 ratio.

The 780M counters with a higher boost clock of 2900 MHz versus the Arc Pro B65's 2400 MHz. The AMD part also uses a more advanced 4 nm process versus the Intel part's 5 nm process, and it achieves a much higher transistor density.

For the 780M, the nearest rival comparison shows it performs within 0.5% of four other GPUs. These rivals span different vendors and generations: AMD Radeon Pro 560, NVIDIA GeForce RTX 4060, AMD Radeon HD 7790, and AMD Radeon Pro 460. The tight clustering indicates the 780M occupies a well-established performance tier.

FAQ

Q: What is the average benchmark score for each GPU?

A: The AMD Radeon 780M has an average benchmark score of 17588. The Intel Arc Pro B65 has an average benchmark score of 0, because the database contains no recorded benchmark results for it.

Q: How does the AMD Radeon 780M compare to its nearest rivals?

A: The 780M's average score of 17588 is 0.2% ahead of the AMD Radeon Pro 560 (17551), 0.3% behind the NVIDIA GeForce RTX 4060 (17639), 0.4% behind the AMD Radeon HD 7790 (17666), and 0.5% ahead of the AMD Radeon Pro 460 (17509).

Q: Which GPU has more memory bandwidth?

A: The Intel Arc Pro B65 has 608.0 GB/s of bandwidth from its 32 GB GDDR6 memory on a 256-bit bus. The AMD Radeon 780M uses system shared memory, making its bandwidth system dependent.

Q: What are the TDP values for these GPUs?

A: The AMD Radeon 780M has a TDP of 15 W. The Intel Arc Pro B65 has a TDP of 200 W and requires a suggested PSU of 550 W.

Q: Which GPU has a higher FP32 performance?

A: The Intel Arc Pro B65 delivers 12.29 TFLOPS FP32, while the AMD Radeon 780M delivers 8.909 TFLOPS FP32.

Q: What process nodes are used by each GPU?

A: The AMD Radeon 780M is fabricated by TSMC on a 4 nm process. The Intel Arc Pro B65 is fabricated by TSMC on a 5 nm process.

Specification Differences

The following fields differ between the two GPUs:

• Chip: Phoenix (AMD) versus BMG-G21 (Intel)
• Architecture: RDNA 3.0 versus Xe2-HPG
• Generation: Navi III IGP (Phoenix) versus Battlemage (Pro Series)
• Process Node: 4 nm versus 5 nm
• Transistors: 25,390 million versus 19,600 million
• Die Size: 178 mm² versus 272 mm²
• Transistor Density: 142.6M / mm² versus 72.1M / mm²
• Base Clock: 800 MHz versus 2400 MHz
• Boost Clock: 2900 MHz versus 2400 MHz
• Memory Clock: System Shared versus 2375 MHz 19 Gbps effective
• Memory Size: System Shared versus 32 GB
• Memory Type: System Shared versus GDDR6
• Memory Bus Width: System Shared versus 256 bit
• Memory Bandwidth: System Dependent versus 608.0 GB/s
• Shading Units: 768 versus 2560
• TMUs: 48 versus 160
• ROPs: 32 versus 80
• Ray Tracing Cores: 12 versus 20
• Pixel Rate: 92.80 GPixel/s versus 192.0 GPixel/s
• Texture Rate: 139.2 GTexel/s versus 384.0 GTexel/s
• FP32: 8.909 TFLOPS versus 12.29 TFLOPS
• FP16: 8.909 TFLOPS (1:1) versus 24.58 TFLOPS (2:1)
• TDP: 15 W versus 200 W
• Slot Width: IGP versus Dual-slot
• Power Connectors: None versus 1x 8-pin
• Suggested PSU: null versus 550 W
• Bus Interface: PCIe 4.0 x8 versus PCIe 5.0 x16
• Display Outputs: Motherboard Dependent versus 4x DisplayPort 2.1
• Release Date: 2024-01-30 versus 2026-03-31

Fields that match include DirectX 12 Ultimate (12_2), OpenGL 4.6, Vulkan 1.4, and the Active production status.

The Verdict

The data supports a clear division of roles. The AMD Radeon 780M is a low-power integrated GPU with measurable benchmark performance. Its 15 W TDP, IGP form factor, and system shared memory make it suitable for systems where the GPU is part of the processor package. Its 61st percentile ranking and average score of 17588 show it competes with the AMD Radeon Pro 560, NVIDIA GeForce RTX 4060, AMD Radeon HD 7790, and AMD Radeon Pro 460, all within 0.5% of its score.

The Intel Arc Pro B65 presents a different profile. It has no benchmark scores in the database, so its actual performance cannot be verified. Its specifications, however, indicate a high-bandwidth discrete card: 32 GB GDDR6, 608.0 GB/s, 2560 shading units, and 12.29 TFLOPS FP32. Its 200 W TDP and dual-slot design place it in a different class of hardware entirely.

For users who need verified benchmark results and minimal power draw, the AMD Radeon 780M is the only choice with recorded performance data. For users who require dedicated memory capacity, high bandwidth, and a larger compute footprint, the Intel Arc Pro B65 offers those specifications on paper, but the database has no measurements to confirm its real-world behavior. The 780M's recorded scores and percentile ranking give it the advantage in data-backed analysis, while the Arc Pro B65 remains an unverified specification sheet.