Intel Arc B770 vs Intel UHD Graphics 770 Mobile Comparison

FAQ

Q: What are the core architectural identities of the Intel Arc B770 and the Intel UHD Graphics 770 Mobile?

A: The Arc B770 is built on the Xe2-HPG architecture, specifically the Battlemage (Arc 7) generation, using the BMG-G31 chip fabricated on a 5 nm process at TSMC. The UHD Graphics 770 Mobile uses the Generation 12.2 architecture, part of the HD Graphics-M (Raptor Lake) family, with a Raptor Lake chip fabricated on Intel's 10 nm process.

Q: How do the memory subsystems compare between the two GPUs?

A: The Arc B770 has a dedicated 16 GB GDDR6 memory pool on a 256 bit bus, delivering 512.0 GB/s of bandwidth. The UHD Graphics 770 Mobile uses System Shared memory, with its bus width and bandwidth described as System Dependent, meaning it relies entirely on the host system's main memory.

Q: Which GPU has higher raw shading throughput?

A: The Arc B770 delivers 19.66 TFLOPS of FP32 compute, while the UHD Graphics 770 Mobile provides 819.2 GFLOPS. This makes the Arc B770 roughly 24 times faster in raw single-precision floating-point performance based on the recorded figures.

Q: What are the DirectX feature level differences?

A: The Arc B770 supports DirectX 12 Ultimate (12_2), while the UHD Graphics 770 Mobile is limited to DirectX 12 (12_1). Both GPUs support OpenGL 4.6 and Vulkan 1.4.

Q: What is the typical power consumption range indicated by the data?

A: The Arc B770 has a TDP of 225 W and requires a 550 W suggested PSU, with a dual-slot cooler and 1x 6-pin plus 1x 8-pin power connectors. The UHD Graphics 770 Mobile has a TDP of 15 W and is an integrated GPU (IGP) with no separate power connectors.

Q: How do the release dates and production statuses differ?

A: The UHD Graphics 770 Mobile was released on January 3, 2023, and is marked as Active in production, with its successor listed as Arc Graphics-M. The Arc B770 has a release date of December 31, 2025, with its predecessor listed as Alchemist.

Architecture Differences

The two GPUs represent fundamentally different design philosophies within Intel's lineup. The Arc B770 is a discrete, high-performance part built around the Xe2-HPG architecture, a second-generation implementation following the Alchemist predecessor. It uses the BMG-G31 chip on a 5 nm TSMC process, with a die size of 368 mm². The UHD Graphics 770 Mobile, by contrast, is an integrated graphics solution embedded in the Raptor Lake chip, using the older Generation 12.2 architecture on Intel's 10 nm process.

The execution resource disparity is enormous. The Arc B770 packs 4096 shading units, 256 texture mapping units, and 128 raster output units. The UHD Graphics 770 Mobile has 256 shading units, 16 TMUs, and 8 ROPs. This represents a 16x difference in shading units, a 16x difference in TMUs, and a 16x difference in ROPs. The Arc B770 also includes 32 dedicated ray tracing cores, while the UHD Graphics 770 Mobile has none listed.

Clock behavior differs substantially. The Arc B770 runs at a base of 2100 MHz with a boost of 2400 MHz, while the UHD Graphics 770 Mobile operates at a base of 300 MHz and boosts to 1600 MHz. The memory clock for the Arc B770 is 2000 MHz with 16 Gbps effective data rate, whereas the UHD Graphics 770 Mobile's memory clock is simply listed as System Shared.

Feature support shows a generational gap. The Arc B770 supports DirectX 12 Ultimate (12_2), which includes advanced features like ray tracing and mesh shaders, while the UHD Graphics 770 Mobile is capped at DirectX 12 (12_1). Both support OpenGL 4.6 and Vulkan 1.4, but the underlying hardware capabilities differ significantly.

The physical implementation could not be more different. The Arc B770 is a dual-slot card with 1x 6-pin and 1x 8-pin power connectors, requiring a 550 W suggested PSU. The UHD Graphics 770 Mobile is an IGP with no slot width, no power connectors, and no suggested PSU, drawing power directly from the mobile platform's 15 W TDP allocation.

The bus interface also separates them. The Arc B770 uses PCIe 4.0 x16, while the UHD Graphics 770 Mobile uses a Ring Bus connection, typical for integrated graphics in Intel mobile processors. Display outputs for the Arc B770 include 1x HDMI 2.1a and 3x DisplayPort 2.1, while the UHD Graphics 770 Mobile's outputs are described as Portable Device Dependent.

The Verdict

The recorded data paints a clear picture of two entirely different performance classes. The Arc B770 is designed for demanding workloads, with 512.0 GB/s of dedicated memory bandwidth, 19.66 TFLOPS of FP32 compute, and 32 ray tracing cores. The UHD Graphics 770 Mobile is a power-efficient integrated solution with 15 W TDP, 819.2 GFLOPS of FP32 compute, and no ray tracing support.

For users who need discrete graphics performance, the Arc B770 is the only choice. Its 16 GB GDDR6 memory, 256 bit bus, and 512.0 GB/s bandwidth provide the foundation for high-resolution textures and complex scenes. The 307.2 GPixel/s pixel rate and 614.4 GTexel/s texture rate indicate substantial rasterization throughput.

For mobile users who prioritize battery life and basic display output, the UHD Graphics 770 Mobile serves a completely different purpose. Its 12.80 GPixel/s pixel rate and 25.60 GTexel/s texture rate are sufficient for standard desktop tasks and light media consumption, but the data shows it is not designed for intensive graphics work.

The release timeline also matters. The UHD Graphics 770 Mobile has been on the market since January 2023 and is still Active in production. The Arc B770 is a newer part with a December 2025 release date, following the Alchemist predecessor. The UHD Graphics 770 Mobile's successor is already listed as Arc Graphics-M, indicating Intel's own roadmap positions integrated graphics as a transitional product.

Specification Differences

The specification tables reveal differences in nearly every measurable category. The process node differs: 5 nm TSMC for the Arc B770 versus 10 nm Intel for the UHD Graphics 770 Mobile. The die size is 368 mm² for the Arc B770, while the UHD Graphics 770 Mobile has no listed die size.

Memory configuration is a major divider. The Arc B770 has 16 GB of GDDR6 with a 256 bit bus and 512.0 GB/s bandwidth. The UHD Graphics 770 Mobile uses System Shared memory with System Dependent bandwidth and bus width. This is not just a capacity difference but a fundamental architectural difference in how memory is accessed.

Compute resources show a 16x ratio across the board. The Arc B770 has 4096 shading units versus 256 for the UHD Graphics 770 Mobile. TMUs are 256 versus 16. ROPs are 128 versus 8. The Arc B770 has 32 RT cores, while the UHD Graphics 770 Mobile has none.

Clock speeds differ in both base and boost. The Arc B770 runs at 2100 MHz base and 2400 MHz boost. The UHD Graphics 770 Mobile runs at 300 MHz base and 1600 MHz boost. The memory clock for the Arc B770 is 2000 MHz with 16 Gbps effective, while the UHD Graphics 770 Mobile's memory clock is System Shared.

Rates and throughput figures follow the resource ratios. Pixel rate is 307.2 GPixel/s for the Arc B770 versus 12.80 GPixel/s for the UHD Graphics 770 Mobile. Texture rate is 614.4 GTexel/s versus 25.60 GTexel/s. FP32 compute is 19.66 TFLOPS versus 819.2 GFLOPS. FP16 compute is 39.32 TFLOPS versus 1.638 TFLOPS, both at 2:1 ratio.

Power and physical specifications diverge completely. The Arc B770 has a 225 W TDP, dual-slot width, and 1x 6-pin plus 1x 8-pin power connectors. The UHD Graphics 770 Mobile has a 15 W TDP and is classified as IGP with no power connectors. The suggested PSU for the Arc B770 is 550 W, while the UHD Graphics 770 Mobile has none listed.

Bus interface and display outputs also differ. The Arc B770 uses PCIe 4.0 x16, while the UHD Graphics 770 Mobile uses Ring Bus. Display outputs are 1x HDMI 2.1a and 3x DisplayPort 2.1 for the Arc B770, versus Portable Device Dependent for the UHD Graphics 770 Mobile.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark scores for these two GPUs, and neither has recorded average benchmark scores or percentile rankings beyond the default 50th percentile placeholder. The win counts are zero for both sides. This absence of empirical test data means the comparison must rely entirely on the architectural and specification differences.

The most significant advantage for the Arc B770 is in memory bandwidth. The 512.0 GB/s figure versus System Dependent bandwidth for the UHD Graphics 770 Mobile means the discrete card has predictable, dedicated memory performance. Integrated graphics sharing system memory can suffer from variable latency and bandwidth depending on the host platform's memory configuration.

Compute throughput is another decisive area. The 19.66 TFLOPS FP32 figure for the Arc B770 versus 819.2 GFLOPS for the UHD Graphics 770 Mobile indicates a 24x difference in raw shader processing capability. This directly impacts fill-rate-bound workloads. The pixel rate difference of 307.2 GPixel/s versus 12.80 GPixel/s is a 24x gap, and the texture rate difference of 614.4 GTexel/s versus 25.60 GTexel/s is also 24x.

The ray tracing advantage is binary. The Arc B770 has 32 dedicated RT cores, while the UHD Graphics 770 Mobile has none listed. This means hardware-accelerated ray tracing is available on the discrete card but not on the integrated solution.

Clock speeds tell a story of sustained performance. The Arc B770's boost clock of 2400 MHz is 50% higher than the UHD Graphics 770 Mobile's 1600 MHz boost. The base clock difference is even more pronounced: 2100 MHz versus 300 MHz, a 7x gap.

The DirectX feature level difference of 12_2 versus 12_1 means certain modern rendering techniques may require the Arc B770. Both GPUs support Vulkan 1.4 and OpenGL 4.6, so API-level compatibility exists, but the underlying hardware capabilities differ.

Where Each One Wins

The Arc B770 wins decisively in scenarios that demand sustained, high-throughput graphics processing. The 16 GB GDDR6 memory with 512.0 GB/s bandwidth supports large texture sets and high-resolution framebuffers. The 32 RT cores enable hardware ray tracing, which the UHD Graphics 770 Mobile cannot accelerate. The 19.66 TFLOPS FP32 compute and 614.4 GTexel/s texture rate indicate strong performance in dense shader workloads and complex scene rendering.

The UHD Graphics 770 Mobile wins in power-constrained environments. Its 15 W TDP is 210 W lower than the Arc B770's 225 W TDP. This makes it suitable for thin-and-light laptops where thermal and power budgets are strict. The integrated nature means no additional card slot, no external power connectors, and no dedicated PSU requirement.

For legacy or basic display tasks, the UHD Graphics 770 Mobile's 12.80 GPixel/s pixel rate is adequate for standard desktop compositing, video playback, and lightweight 2D applications. The 25.60 GTexel/s texture rate handles basic UI rendering without issue.

The Arc B770's PCIe 4.0 x16 interface provides high bandwidth to the host system, while the UHD Graphics 770 Mobile's Ring Bus is more tightly integrated with the CPU but limited by shared memory. For external display connectivity, the Arc B770 offers 1x HDMI 2.1a and 3x DisplayPort 2.1, while the UHD Graphics 770 Mobile's outputs depend on the portable device implementation.

The production status also matters. The UHD Graphics 770 Mobile is Active, meaning it is currently available in the market. Its successor, Arc Graphics-M, is listed, indicating a known evolution path. The Arc B770 has no successor listed, and its production status is not specified.

The data supports a straightforward conclusion: the Arc B770 is for users who need discrete-level graphics performance with dedicated memory and ray tracing, while the UHD Graphics 770 Mobile is for users who need basic graphics output within a minimal power envelope. The 24x gap in compute throughput and the presence versus absence of RT cores are the decisive factors.