Intel Arc B770 vs Intel Arc Graphics 4 Xe Mobile Comparison

Head-to-Head Benchmarks

The recorded data shows a stark performance separation between these two Intel graphics solutions, though direct benchmark scores are absent from the database. What remains is a comparison derived from architectural throughput metrics, which indicate the Arc B770 operates in a different performance class entirely.

The Arc B770 delivers 19.66 TFLOPS of FP32 compute, while the Arc Graphics 4 Xe Mobile produces 2.355 TFLOPS. This represents an 8.35x advantage for the discrete card. In FP16 workloads, the B770 reaches 39.32 TFLOPS (2:1 ratio) versus 4.710 TFLOPS for the mobile part, again an 8.35x gap. These figures confirm that the B770 is positioned for sustained, high-throughput rendering tasks, while the mobile solution targets efficiency and basic 3D acceleration.

Pixel throughput tells a similar story. The Arc B770 achieves 307.2 GPixel/s, compared to 36.80 GPixel/s for the Arc Graphics 4 Xe Mobile. This is an 8.35x difference in fill rate, meaning the B770 can drive high-resolution displays and complex post-processing effects at framerates the mobile part cannot approach. Texture rate follows the same pattern: 614.4 GTexel/s versus 73.60 GTexel/s, an 8.35x gap that directly impacts scene detail and texture-heavy workloads.

Memory bandwidth amplifies the divide. The B770 uses 16 GB of GDDR6 on a 256-bit bus, delivering 512.0 GB/s. The mobile processor relies on System Shared memory with bandwidth described as System Dependent, so no direct numeric comparison is possible from the database. However, the B770's dedicated 256-bit memory interface provides a predictable and substantial bandwidth advantage over any shared-memory configuration, which is critical for high-resolution textures and large scene buffers.

The shading infrastructure also scales accordingly. The B770 contains 4096 shading units, 256 TMUs, 128 ROPs, and 32 ray tracing cores. The Arc Graphics 4 Xe Mobile has 512 shading units, 32 TMUs, 16 ROPs, and 4 ray tracing cores. Each of these represents an 8x or 8.35x difference in raw resources, confirming that the B770 is designed for workloads where every pipeline stage must process significantly more data per frame.

Both parts support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so feature-level API compatibility is identical. The differences lie entirely in execution resources and memory architecture, not in API support. The B770's pixel rate of 307.2 GPixel/s positions it for high-refresh 1440p or 4K gaming, while the mobile part's 36.80 GPixel/s suggests it is suited for light gaming, media playback, and general desktop acceleration.

The B770 draws 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 Arc Graphics 4 Xe Mobile is an IGP with 25 W TDP and no power connectors. This 200 W difference in power budget explains much of the performance gap; the discrete card uses additional power to feed 4096 shading units and a 512.0 GB/s memory subsystem.

The database assigns both parts a 50th percentile rating among all GPUs, but this is a percentile field that does not reflect the head-to-head comparison. No nearest rivals data exists for either product, and no head-to-head benchmark entries populate the database. The analysis therefore rests on the architectural throughput metrics, which are unambiguous: the B770 outperforms the mobile part by an order of magnitude in every measured compute and fill-rate category.

The Verdict

The data indicates two distinct usage profiles. The Intel Arc B770, with 19.66 TFLOPS FP32, 512.0 GB/s memory bandwidth, and 32 ray tracing cores, is a discrete desktop graphics card aimed at high-fidelity gaming and content creation. The Intel Arc Graphics 4 Xe Mobile, with 2.355 TFLOPS FP32 and 4 ray tracing cores, is an integrated processor graphics solution for portable devices where power consumption and physical space are constrained.

Users who need maximum rendering performance should select the Arc B770. It delivers 8.35x the FP32 throughput of the mobile part, 8.35x the pixel fill rate, and 8.35x the texture rate. It also provides dedicated 16 GB GDDR6 memory with a 256-bit bus, eliminating the bandwidth variability of shared system memory. The 225 W TDP and dual-slot cooling requirement are acceptable trade-offs for this level of performance.

Users who prioritize mobility and efficiency should choose the Arc Graphics 4 Xe Mobile. It operates within a 25 W TDP, requires no power connectors, and integrates directly into a Panther Lake processor on a 3 nm Intel process. Its 512 shading units and 4 ray tracing cores provide basic 3D acceleration, media capabilities, and modest gaming performance without the size, weight, or power demands of a discrete card.

The production status differs: the Arc B770 lists a release date of December 31, 2025, with no production status recorded, while the Arc Graphics 4 Xe Mobile is marked Active with a release date of January 26, 2026. This suggests the mobile part is currently available in systems, while the B770's availability is not confirmed in the database.

Neither product has a launch MSRP recorded, and no benchmark averages or rival comparisons exist in the database. The verdict therefore rests on the recorded architectural specifications, which clearly separate these products into different market segments. The B770 is a desktop performance card; the Arc Graphics 4 Xe Mobile is an integrated solution for thin-and-light laptops.

FAQ

Q: How much faster is the Intel Arc B770 than the Intel Arc Graphics 4 Xe Mobile in FP32 compute?

A: The B770 delivers 19.66 TFLOPS compared to 2.355 TFLOPS for the mobile part, an 8.35x advantage.

Q: What memory configurations do the two GPUs use?

A: The B770 uses 16 GB of GDDR6 on a 256-bit bus with 512.0 GB/s bandwidth. The Arc Graphics 4 Xe Mobile uses System Shared memory with System Dependent bandwidth.

Q: Do both GPUs support the same graphics APIs?

A: Yes. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What is the power consumption difference between the two?

A: The B770 has a 225 W TDP and requires a 550 W suggested PSU. The Arc Graphics 4 Xe Mobile has a 25 W TDP and uses no power connectors.

Q: How many ray tracing cores does each GPU have?

A: The B770 has 32 ray tracing cores. The Arc Graphics 4 Xe Mobile has 4 ray tracing cores.

Q: Which GPU has a higher pixel fill rate?

A: The B770 achieves 307.2 GPixel/s, while the Arc Graphics 4 Xe Mobile achieves 36.80 GPixel/s, an 8.35x difference.

Specification Differences

The two products differ across nearly every recorded specification. The B770 uses the BMG-G31 chip with Xe2-HPG architecture from the Battlemage (Arc 7) generation. The Arc Graphics 4 Xe Mobile uses the Panther Lake chip with Xe3-LPG architecture from the Arc Graphics-M (Panther Lake) generation.

The process nodes differ: the B770 is fabricated on a 5 nm process at TSMC, while the mobile part uses a 3 nm process at Intel. Die size is 368 mm² for the B770; the mobile die size is unknown.

Clock speeds show a notable difference. The B770 has a base clock of 2100 MHz and a boost clock of 2400 MHz. The mobile part has a base clock of 300 MHz and a boost clock of 2300 MHz. Memory clocks are 2000 MHz (16 Gbps effective) for the B770, while the mobile part uses System Shared memory.

Memory capacity, type, bus width, and bandwidth all differ: 16 GB GDDR6, 256-bit, 512.0 GB/s versus System Shared for all fields. Shading units number 4096 versus 512. TMUs are 256 versus 32. ROPs are 128 versus 16. Ray tracing cores are 32 versus 4.

Pixel rate is 307.2 GPixel/s versus 36.80 GPixel/s. Texture rate is 614.4 GTexel/s versus 73.60 GTexel/s. FP32 is 19.66 TFLOPS versus 2.355 TFLOPS. FP16 is 39.32 TFLOPS versus 4.710 TFLOPS.

TDP is 225 W versus 25 W. Slot width is dual-slot versus IGP. Power connectors are 1x 6-pin plus 1x 8-pin versus none. Suggested PSU is 550 W versus not applicable. Bus interface is PCIe 4.0 x16 versus IGP.

Display outputs are 1x HDMI 2.1a and 3x DisplayPort 2.1 for the B770, while the mobile part lists Portable Device Dependent outputs. The B770 has no recorded production status; the mobile part is Active. Release dates are December 31, 2025, for the B770 and January 26, 2026, for the mobile part. The B770 lists Alchemist as a predecessor; the mobile part has no predecessor recorded.

Architecture Differences

The architectural divergence begins at the chip level. The B770 uses the BMG-G31 chip built on Xe2-HPG, the second-generation high-performance gaming architecture from Intel. The Arc Graphics 4 Xe Mobile uses the Panther Lake chip built on Xe3-LPG, a low-power gaming architecture optimized for integrated use in mobile processors.

The B770 is manufactured on a 5 nm process at TSMC, while the mobile part uses a 3 nm process at Intel. The smaller process node for the mobile part enables higher transistor density within a power envelope of just 25 W, though the database records unknown transistor counts for both.

Die size is 368 mm² for the B770, reflecting a large, fully featured GPU die. The mobile die size is unknown, but its integration into a Panther Lake processor and 25 W TDP indicate a substantially smaller implementation.

The execution resource counts define the performance ceiling. The B770 allocates 4096 shading units, 256 TMUs, 128 ROPs, and 32 ray tracing cores. The mobile part allocates 512 shading units, 32 TMUs, 16 ROPs, and 4 ray tracing cores. Each resource category shows an 8x or 8.35x difference, indicating the B770 uses a much wider SIMD layout and deeper rasterization pipeline.

Memory architecture differs fundamentally. The B770 uses dedicated GDDR6 memory on a 256-bit bus with 512.0 GB/s bandwidth. The mobile part shares system memory with the host processor, and its bandwidth is System Dependent. Dedicated memory provides consistent latency and bandwidth, while shared memory competes with CPU workloads and varies with system configuration.

Ray tracing hardware scales with the rest of the architecture: 32 cores on the B770 versus 4 on the mobile part. This indicates the B770 can handle significantly more complex ray-traced scenes, though both support DirectX 12 Ultimate, so the API feature set is identical.

Clock behavior also differs. The B770 runs at a 2100 MHz base and 2400 MHz boost, while the mobile part runs at 300 MHz base and 2300 MHz boost. The mobile part's low base clock reflects aggressive power management; its boost clock reaches near the B770's level but cannot sustain it under the 25 W power limit.

The B770 lists Alchemist as its predecessor, situating it in a product line of discrete gaming GPUs. The mobile part has no predecessor, indicating a new integrated graphics line for Panther Lake processors. Both support the same API versions, but the underlying architectures are optimized for opposite ends of the power and performance spectrum.