Intel Arc B770 vs Intel Arc Graphics 1 Xe Mobile Comparison

The Verdict

The Intel Arc B770 and Intel Arc Graphics 1 Xe Mobile occupy completely different corners of the graphics landscape. The B770 is a discrete, dual-slot desktop add-in board built for demanding workloads, while the 1 Xe Mobile is an integrated graphics processor (IGP) designed for portable devices. The data shows no overlap in their intended usage, and the specification gap is enormous.

For users seeking high-resolution gaming, content creation, or any task requiring substantial compute throughput, the Arc B770 is the only viable choice from this comparison. Its 4096 shading units, 16 GB of dedicated GDDR6 memory, and 512.0 GB/s of bandwidth place it in a performance class that the 1 Xe Mobile cannot approach.

Conversely, the Arc Graphics 1 Xe Mobile exists for thin-and-light laptops where power efficiency and space are paramount. With a 25 W TDP compared to the B770's 225 W, it integrates directly into the processor package and requires no power connectors. The recorded data indicates this is not a contest of equals but a decision between a full desktop GPU and an embedded mobile solution.

The percentile fields for both GPUs are identical at 50, and neither has recorded benchmark scores or nearest rivals in the database. This suggests that direct performance comparisons are not yet available or that these are newly listed entries. The architecture differences, however, tell a clear story about their respective positions.

Architecture Differences

The two GPUs stem from different Intel graphics architectures manufactured on different processes. The Arc B770 uses the BMG-G31 chip based on Xe2-HPG architecture, built on a 5 nm process at TSMC. The 1 Xe Mobile uses the Wildcat Lake chip based on Xe3-LPG architecture, fabricated on a 3 nm process at Intel's own foundry. The B770 belongs to the Battlemage generation (Arc 7), while the 1 Xe Mobile is part of the Arc Graphics-M generation (Wildcat Lake).

The compute resources differ by orders of magnitude. The B770 packs 4096 shading units, 256 texture mapping units, 128 render output units, and 32 ray tracing cores. The 1 Xe Mobile has 128 shading units, 8 TMUs, 4 ROPs, and 1 ray tracing core. This represents a 32x difference in shading units and TMUs, and a 32x difference in ROPs. The ray tracing core count differs by 32x as well.

Memory architecture is fundamentally different. The B770 uses 16 GB of GDDR6 memory on a 256-bit bus, delivering 512.0 GB/s of bandwidth. The 1 Xe Mobile uses system shared memory, with its bandwidth marked as system dependent. The B770's memory clock runs at 2000 MHz with 16 Gbps effective speed, while the 1 Xe Mobile has no dedicated memory clock listed.

The B770's die size is recorded as 368 mm², while the 1 Xe Mobile's die size is unknown. Both have unknown transistor counts. The B770's pixel rate is 307.2 GPixel/s versus 9.200 GPixel/s for the 1 Xe Mobile. The texture rate stands at 614.4 GTexel/s for the B770 against 18.40 GTexel/s for the mobile part. FP32 compute is 19.66 TFLOPS for the B770 and 588.8 GFLOPS for the 1 Xe Mobile, a 33.4x difference. FP16 performance is 39.32 TFLOPS for the B770 and 1,177.6 GFLOPS for the 1 Xe Mobile.

Clock speeds also diverge significantly. The B770 runs at a 2100 MHz base and 2400 MHz boost. The 1 Xe Mobile has a 300 MHz base and 2300 MHz boost. The mobile part's boost clock is close to the B770's, but the base clock is dramatically lower, indicating aggressive power management for mobile operation.

Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The B770's display outputs are listed as 1x HDMI 2.1 and 3x DisplayPort 2.1, while the 1 Xe Mobile's outputs are portable device dependent. The B770 uses a PCIe 4.0 x16 interface, while the 1 Xe Mobile is an IGP on the processor bus.

FAQ

Q: Which GPU has more shading units?

A: The Intel Arc B770 has 4096 shading units, while the Intel Arc Graphics 1 Xe Mobile has 128 shading units. This is a 32x difference in raw shader count.

Q: What type of memory does each GPU use?

A: The Arc B770 uses 16 GB of dedicated GDDR6 memory on a 256-bit bus with 512.0 GB/s bandwidth. The 1 Xe Mobile uses system shared memory, meaning it relies on the host system's RAM, with bandwidth listed as system dependent.

Q: How do their power requirements differ?

A: The Arc B770 has a 225 W TDP, requires dual-slot cooling, and needs both a 6-pin and 8-pin power connector plus a 550 W suggested power supply. The 1 Xe Mobile has a 25 W TDP, uses no power connectors, and is an integrated IGP with no suggested PSU listed.

Q: Are the APIs supported the same on both?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. This means feature-level API compatibility is identical, despite the massive performance gap.

Q: What is the release timeline for these products?

A: The Arc B770 has a release date of 2025-12-31, while the Arc Graphics 1 Xe Mobile is dated 2026-04-15. The B770's predecessor is Alchemist, and the 1 Xe Mobile's predecessor is HD Graphics-M.

Q: Which manufacturing processes are used?

A: The Arc B770 uses a 5 nm process at TSMC, while the 1 Xe Mobile uses a 3 nm process at Intel. The B770's die size is 368 mm², but the 1 Xe Mobile's die size is not recorded.

Specification Differences

The recorded data shows differences across nearly every specification field. The B770's chip is BMG-G31, while the 1 Xe Mobile uses Wildcat Lake. The architecture differs from Xe2-HPG to Xe3-LPG. The generation moves from Battlemage (Arc 7) to Arc Graphics-M (Wildcat Lake).

Process node shifts from 5 nm (TSMC) to 3 nm (Intel). Die size is 368 mm² for the B770 versus unknown for the mobile part. Base clock is 2100 MHz versus 300 MHz, and boost clock is 2400 MHz versus 2300 MHz. Memory clock is 2000 MHz 16 Gbps effective for the B770, with no dedicated memory clock for the mobile part.

Memory size changes from 16 GB GDDR6 to system shared. Bus width is 256 bit versus system shared. Bandwidth is 512.0 GB/s versus system dependent. Shading units are 4096 versus 128, TMUs are 256 versus 8, ROPs are 128 versus 4, and RT cores are 32 versus 1.

Pixel rate is 307.2 GPixel/s versus 9.200 GPixel/s, a 33.4x difference. Texture rate is 614.4 GTexel/s versus 18.40 GTexel/s, a 33.4x difference. FP32 compute is 19.66 TFLOPS versus 588.8 GFLOPS, and FP16 is 39.32 TFLOPS versus 1,177.6 GFLOPS.

TDP is 225 W versus 25 W, a 9x difference. 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 none listed. Bus interface is PCIe 4.0 x16 versus IGP. Display outputs are 1x HDMI 2.1 plus 3x DisplayPort 2.1 versus portable device dependent.

Production status is not recorded for the B770, while the 1 Xe Mobile is marked active. Release dates differ by roughly two quarters. The B770's predecessor is Alchemist, and the 1 Xe Mobile's predecessor is HD Graphics-M.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark results for this pair, and neither GPU has an average benchmark score or a nearest rivals list. The wins counters for both are zero. Direct performance measurements are therefore unavailable from the recorded data.

The specification deltas, however, provide a clear quantitative picture. The B770's FP32 throughput of 19.66 TFLOPS is 33.4 times the 1 Xe Mobile's 588.8 GFLOPS. In pixel fill rate, the B770 delivers 307.2 GPixel/s, which is 33.4 times the 9.200 GPixel/s of the mobile part. Texture fill rate shows the same ratio: 614.4 GTexel/s versus 18.40 GTexel/s.

Memory bandwidth is another major separator. The B770's 512.0 GB/s of dedicated GDDR6 bandwidth is a fixed figure, while the 1 Xe Mobile's bandwidth is system dependent. The B770's 16 GB VRAM capacity is fixed, whereas the mobile part borrows from system memory with no dedicated allocation.

The B770's 32 ray tracing cores versus the 1 Xe Mobile's single RT core indicates a substantial difference in hardware-accelerated ray tracing capability. Similarly, the 256 TMUs and 128 ROPs of the B770 dwarf the 8 TMUs and 4 ROPs of the mobile part.

The TDP gap of 225 W versus 25 W means the B770 can sustain far higher clocks under load. While the boost clocks are close (2400 MHz versus 2300 MHz), the B770's 2100 MHz base clock versus 300 MHz base clock suggests the mobile part spends much more time at low frequencies to manage thermals and power.

Where Each One Wins

The Arc B770 wins decisively in every compute and graphics throughput metric recorded. Its 4096 shading units, 256 TMUs, and 128 ROPs provide the foundation for high-resolution rendering. The 16 GB GDDR6 memory with 512.0 GB/s bandwidth supports large textures and high-resolution frame buffers without system memory contention. The 32 RT cores enable hardware ray tracing workloads that the single RT core of the mobile part cannot meaningfully handle.

The B770's 225 W TDP and dual-slot design with two power connectors indicate it is built for sustained performance in desktop chassis with adequate cooling. Its PCIe 4.0 x16 interface provides full bandwidth to the host system. The display outputs include HDMI 2.1 and three DisplayPort 2.1 connections, supporting multi-monitor setups.

The 1 Xe Mobile wins in power efficiency and integration. Its 25 W TDP is 9x lower than the B770's, making it suitable for portable devices where battery life and thermal limits are critical. The 3 nm process at Intel represents a more advanced manufacturing node than the B770's 5 nm TSMC process, which contributes to the mobile part's lower power draw.

The mobile part requires no power connectors, no suggested PSU, and no expansion slot. It is an IGP, meaning it ships integrated into the Wildcat Lake processor. Its display outputs are portable device dependent, allowing laptop manufacturers to configure them as needed. The 1 Xe Mobile's production status is active, indicating it is currently available in the market.

For use cases like basic display output, video playback, and light 2D workloads, the 1 Xe Mobile provides adequate functionality at minimal power cost. For any task involving 3D rendering, gaming, ray tracing, or compute acceleration, the B770's specification sheet shows overwhelming advantages. The 33.4x differences in shading units, pixel rate, texture rate, and FP32 throughput leave no ambiguity about which GPU delivers higher raw performance.