AMD Radeon 780M vs Intel Arc B770 Comparison

AMD Radeon 780M is an integrated graphics processor built on the RDNA 3.0 architecture, part of the Phoenix chip generation, and fabricated on a 4 nm process at TSMC. Intel Arc B770 is a discrete graphics card based on the Xe2-HPG architecture, part of the Battlemage generation, and fabricated on a 5 nm process at TSMC. The database contains benchmark scores for the AMD Radeon 780M across three tests, while the Intel Arc B770 has no recorded benchmark scores yet. The AMD part achieves an average benchmark score of 17588, placing it in the 61st percentile of all GPUs, while the Intel part sits at the 50th percentile with an average score of zero due to the absence of recorded data.

Where Each One Wins

Benchmark results indicate a clear split in intended use cases based on the recorded data. The AMD Radeon 780M delivers measurable performance in the database, with a score of 480 in 3DMark Steel Nomad DX12, 18602 in Geekbench OpenCL, and 33683 in Geekbench Vulkan. These results place it in the 61st percentile of all GPUs, meaning it outperforms more than half of the database entries. The Intel Arc B770 has no benchmark scores recorded, so its performance profile cannot be quantified from the data. Its percentile rank of 50 is a placeholder derived from the absence of data rather than a measured result.

The AMD Radeon 780M wins in every measurable category simply because it has recorded data. It is an integrated processor with a 15 W TDP, making it suitable for systems where power draw is a primary constraint. The Intel Arc B770, by contrast, carries a 225 W TDP and requires a dual-slot cooler with a 1x 6-pin plus 1x 8-pin power connector setup, indicating it is designed for a desktop environment with dedicated power delivery. The data shows that the AMD part is the only one with verified performance, so any comparison of wins must acknowledge that the Intel part's lack of scores means it cannot claim any benchmark victories in the database.

The use-case split is therefore based on architecture and specification rather than measured performance. The AMD Radeon 780M targets systems with shared memory, where the GPU uses system RAM and bandwidth is described as system dependent. The Intel Arc B770 targets discrete graphics workloads with 16 GB of dedicated GDDR6 memory on a 256-bit bus, delivering 512.0 GB/s of bandwidth. The AMD part has a PCIe 4.0 x8 interface, while the Intel part uses PCIe 4.0 x16, doubling the lane count for data transfer. In terms of thermal and power design, the AMD part is an IGP with no power connectors and motherboard-dependent display outputs, while the Intel part is a dual-slot card with specific display outputs including 1x HDMI 2.1a and 3x DisplayPort 2.1.

Architecture Differences

The two GPUs differ fundamentally in their construction and design goals. The AMD Radeon 780M uses the RDNA 3.0 architecture on a 4 nm process, with a die size of 178 mm² and 25,390 million transistors, resulting in a transistor density of 142.6 million per square millimeter. The Intel Arc B770 uses the Xe2-HPG architecture on a 5 nm process, with a die size of 368 mm² and an unknown transistor count. The AMD chip integrates 768 shading units, 48 texture mapping units, and 32 render output units, along with 12 ray tracing cores. The Intel chip has 4096 shading units, 256 texture mapping units, and 128 render output units, along with 32 ray tracing cores. These numbers indicate that the Intel part has more than five times the shading units and more than double the ray tracing cores of the AMD part.

Clock speeds differ markedly. The AMD Radeon 780M has a base clock of 800 MHz and a boost clock of 2900 MHz. The Intel Arc B770 has a base clock of 2100 MHz and a boost clock of 2400 MHz. The AMD part's boost clock is higher, but the Intel part's base clock is substantially higher, suggesting a different performance curve. Memory configuration is another key differentiator. The AMD part uses system shared memory, meaning it draws from the host system's RAM, with bandwidth described as system dependent. The Intel part has 16 GB of dedicated GDDR6 memory running at 2000 MHz with 16 Gbps effective speed, on a 256-bit bus, yielding 512.0 GB/s of bandwidth. The AMD part has no dedicated memory, so its memory size, type, and bus width are all listed as system shared.

Compute throughput figures reflect the architectural scale. The AMD Radeon 780M delivers 8.909 TFLOPS for FP32 and 8.909 TFLOPS for FP16 with a 1:1 ratio. The Intel Arc B770 delivers 19.66 TFLOPS for FP32 and 39.32 TFLOPS for FP16 with a 2:1 ratio, meaning its FP16 throughput is double its FP32 throughput. Pixel and texture rates follow the same pattern: the AMD part achieves 92.80 GPixel/s and 139.2 GTexel/s, while the Intel part achieves 307.2 GPixel/s and 614.4 GTexel/s. Both parts support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is identical.

The Verdict

The data supports a straightforward choice for different system types. The AMD Radeon 780M is an integrated GPU with a 15 W TDP, suitable for compact or low-power builds where a dedicated card is not feasible. Its benchmark scores are recorded and place it in the 61st percentile, with an average score of 17588. The nearest rivals in the database include the AMD Radeon Pro 560 with an average score of 17551 and a delta of 0.2 percent, the NVIDIA GeForce RTX 4060 with an average score of 17639 and a delta of -0.3 percent, the AMD Radeon HD 7790 with an average score of 17666 and a delta of -0.4 percent, and the AMD Radeon Pro 460 with an average score of 17509 and a delta of 0.5 percent. These deltas show that the 780M is effectively neck-and-neck with these cards, within half a percent in either direction. The 780M is 0.2 percent ahead of the Radeon Pro 560 and 0.5 percent ahead of the Radeon Pro 460, while being 0.3 percent behind the RTX 4060 and 0.4 percent behind the HD 7790.

The Intel Arc B770 has no benchmark scores, so no performance verdict can be formed from the database. Its 50th percentile rank is the default value for an unmeasured part. The specifications show a high-end discrete card with 16 GB of GDDR6, a 256-bit bus, and 512.0 GB/s of bandwidth, but without recorded scores, the database cannot confirm how it performs against any competitor. The verdict for the Intel part must be that it is a spec-heavy card awaiting measurement, while the AMD part is a proven quantity in the database. For a user building a system with a 15 W power budget, the AMD Radeon 780M is the only option with verified results. For a user with a 550 W suggested PSU and a dual-slot slot width, the Intel Arc B770 offers the specifications but no recorded performance data.

FAQ

Q: What is the average benchmark score for the AMD Radeon 780M?

A: The average benchmark score for the AMD Radeon 780M is 17588, placing it in the 61st percentile of all GPUs.

Q: What is the average benchmark score for the Intel Arc B770?

A: The Intel Arc B770 has no recorded benchmark scores, so its average benchmark score is zero, and its percentile rank is 50.

Q: How does the AMD Radeon 780M compare to the NVIDIA GeForce RTX 4060 in the database?

A: The AMD Radeon 780M has an average score of 17588, while the NVIDIA GeForce RTX 4060 has an average score of 17639, making the RTX 4060 0.3 percent higher.

Q: What memory configuration does each GPU use?

A: The AMD Radeon 780M uses system shared memory with system dependent bandwidth, while the Intel Arc B770 uses 16 GB of GDDR6 memory on a 256-bit bus with 512.0 GB/s of bandwidth.

Q: What are the power requirements for each GPU?

A: The AMD Radeon 780M has a 15 W TDP and requires no power connectors, while the Intel Arc B770 has a 225 W TDP and requires a 1x 6-pin plus 1x 8-pin power connector setup with a suggested PSU of 550 W.

Q: Which GPU has more shading units?

A: The Intel Arc B770 has 4096 shading units, while the AMD Radeon 780M has 768 shading units.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between the AMD Radeon 780M and the Intel Arc B770. The head-to-head benchmark array is empty, and both the wins count for the AMD part and the wins count for the Intel part are zero. This absence of data means that a direct performance comparison cannot be made from recorded results. However, the individual benchmark scores for the AMD Radeon 780M can be examined against its nearest rivals to establish a performance context.

The AMD Radeon 780M scores 480 in 3DMark Steel Nomad DX12, 18602 in Geekbench OpenCL, and 33683 in Geekbench Vulkan. These scores contribute to an average of 17588. The nearest rival data shows that the 780M is within a narrow band of performance relative to four other GPUs. The AMD Radeon Pro 560 scores 17551 on average, which is 0.2 percent lower than the 780M. The AMD Radeon Pro 460 scores 17509 on average, which is 0.5 percent lower. The NVIDIA GeForce RTX 4060 scores 17639 on average, which is 0.3 percent higher. The AMD Radeon HD 7790 scores 17666 on average, which is 0.4 percent higher. These deltas, all under one percent, indicate that the 780M sits in a tight competitive cluster where no single rival holds a decisive edge.

The biggest wins for the AMD Radeon 780M are against the AMD Radeon Pro 460 and the AMD Radeon Pro 560, where it leads by 0.5 percent and 0.2 percent respectively. The biggest losses are against the AMD Radeon HD 7790 and the NVIDIA GeForce RTX 4060, where it trails by 0.4 percent and 0.3 percent respectively. These differences are marginal and fall within the noise of typical benchmark variation. For the Intel Arc B770, there are no benchmark scores to analyze, so there are no wins or losses to report. The data shows that the Intel part has not been measured in any of the database's tests, leaving its performance entirely uncharacterized.

Specification Differences

The two GPUs differ in nearly every specification field. The AMD Radeon 780M uses a 4 nm process node, while the Intel Arc B770 uses a 5 nm process node. The AMD chip is built on the Phoenix design with a die size of 178 mm² and 25,390 million transistors, while the Intel chip is built on the BMG-G31 design with a die size of 368 mm² and an unknown transistor count. The AMD part has a transistor density of 142.6 million per square millimeter, while the Intel part has no recorded density.

Clock specifications diverge significantly. The AMD Radeon 780M has a base clock of 800 MHz and a boost clock of 2900 MHz. The Intel Arc B770 has a base clock of 2100 MHz and a boost clock of 2400 MHz. Memory clocks also differ: the AMD part uses system shared memory with no dedicated clock, while the Intel part has a memory clock of 2000 MHz with 16 Gbps effective speed. Memory size, type, bus width, and bandwidth all differ, with the AMD part using system shared memory and the Intel part using 16 GB of GDDR6 on a 256-bit bus with 512.0 GB/s of bandwidth.

Compute unit counts are substantially different. The AMD Radeon 780M has 768 shading units, 48 TMUs, 32 ROPs, and 12 ray tracing cores. The Intel Arc B770 has 4096 shading units, 256 TMUs, 128 ROPs, and 32 ray tracing cores. Pixel rate, texture rate, FP32, and FP16 all differ, with the Intel part having higher values in each category. Power and physical design differ as well: the AMD part has a 15 W TDP, is an IGP with no power connectors, and has motherboard-dependent display outputs, while the Intel part has a 225 W TDP, is a dual-slot card with a 1x 6-pin plus 1x 8-pin power connector, and has 1x HDMI 2.1a plus 3x DisplayPort 2.1 outputs. The bus interface also differs, with the AMD part using PCIe 4.0 x8 and the Intel part using PCIe 4.0 x16. Both parts support the same API set: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Release dates differ, with the AMD part released on 2024-01-30 and the Intel part on 2025-12-31. The AMD part has a predecessor of Navi II IGP and a successor of Navi III IGP, while the Intel part has a predecessor of Alchemist and no successor recorded.