Intel Arc 140T Mobile vs Intel Arc B770 Comparison

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark results between the Intel Arc 140T Mobile and the Intel Arc B770. Both entries show an empty benchmark match-up array, with zero wins recorded for either part. This absence of comparative measurements means the analysis must rely entirely on the specification sheets and the calculated performance indicators embedded in each product record.

The Intel Arc 140T Mobile delivers a raw FP32 throughput of 4.813 TFLOPS, while the Intel Arc B770 reaches 19.66 TFLOPS in the same precision. That places the B770 at roughly four times the compute throughput of the mobile part. In FP16 with the 2:1 ratio, the B770 produces 39.32 TFLOPS against 9.626 TFLOPS for the Arc 140T Mobile, preserving the same multiplier. Pixel rate tells a similar story: the B770 outputs 307.2 GPixel/s, the Arc 140T Mobile manages 75.20 GPixel/s. Texture rate on the B770 is 614.4 GTexel/s, compared to 150.4 GTexel/s on the mobile chip. Every throughput metric in the database points in the same direction, the B770 holds a decisive advantage across all shading, texture, and rasterization workloads.

Memory bandwidth amplifies the gap. The Arc B770 uses a 256-bit GDDR6 interface running at 2000 MHz with 16 Gbps effective speed, yielding 512.0 GB/s. The Arc 140T Mobile relies on system shared memory, with bandwidth listed as system dependent. Since the mobile part draws from shared system memory, its effective bandwidth varies with the platform's memory configuration, but the dedicated 512.0 GB/s on the B770 represents a fixed, substantial resource. The memory capacity difference is equally stark: 16 GB of dedicated VRAM on the B770 versus system shared memory on the Arc 140T Mobile, where the GPU borrows from the host RAM.

Both parts carry the same API support: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. They also share the 5 nm process node and TSMC as the foundry. The architecture families differ, however, with the Arc 140T Mobile built on Xe-LPG+ (Arrow Lake-H) and the B770 on Xe2-HPG (Battlemage). The B770 die measures 368 mm², while the Arc 140T Mobile die size is recorded as unknown.

The power envelope separates them sharply. The Arc 140T Mobile has a TDP of 35 W and is an integrated GPU (IGP) with no power connectors. The Arc B770 consumes 225 W, requires a dual-slot cooler, and needs both a 6-pin and an 8-pin power connector, with a suggested PSU of 550 W. The bus interfaces differ as well: IGP for the mobile part versus PCIe 4.0 x16 for the B770.

Clock behavior also diverges. The Arc 140T Mobile runs a base clock of 300 MHz with a boost of 2350 MHz. The B770 starts at 2100 MHz base and boosts to 2400 MHz. The B770 operates at a much higher idle clock, and its boost margin is smaller, which reflects a desktop part designed to run near its maximum continuously. The mobile chip's wide clock range from 300 MHz to 2350 MHz suggests aggressive power management, scaling down heavily under light load and scaling up when workload demands.

The shading unit count underlines the architectural scale difference. The B770 carries 4096 shading units, 256 TMUs, 128 ROPs, and 32 ray tracing cores. The Arc 140T Mobile has 1024 shading units, 64 TMUs, 32 ROPs, and 8 ray tracing cores. The B770 quadruples the shading units and ROPs, and doubles the TMUs and RT cores relative to the mobile chip. These ratios align with the FP32 and texture rate deltas, confirming a consistent fourfold shader scaling and a twofold ray tracing core scaling.

The Verdict

The recorded data leaves no ambiguity for compute-heavy workloads. The Intel Arc B770 outperforms the Intel Arc 140T Mobile by roughly 4.1x in FP32 (19.66 TFLOPS versus 4.813 TFLOPS), 4.1x in FP16 (39.32 TFLOPS versus 9.626 TFLOPS), 4.1x in pixel rate (307.2 GPixel/s versus 75.20 GPixel/s), and 4.1x in texture rate (614.4 GTexel/s versus 150.4 GTexel/s). Any application that stresses shader throughput, texture sampling, or rasterization will favor the B770 by a wide margin.

The B770 also provides 16 GB of dedicated GDDR6 memory with 512.0 GB/s bandwidth. The Arc 140T Mobile has no dedicated VRAM and depends on system shared memory, with bandwidth dependent on the host platform. For workloads that require large working sets or sustained memory throughput, the B770's dedicated frame buffer removes a bottleneck that the mobile part cannot avoid.

The Arc 140T Mobile does hold advantages in power and form factor. Its 35 W TDP versus 225 W on the B770 makes it suitable for compact, battery-powered systems. The IGP form factor requires no power connectors and no separate cooler. The B770 demands a dual-slot cooler, a 6-pin and an 8-pin power connector, and a 550 W PSU. Those requirements place the B770 firmly in desktop towers with adequate power delivery and chassis space.

Release timing also differs. The Arc 140T Mobile carries a release date of 2025-01-12, while the B770 is dated 2025-12-31. The B770 also lists a predecessor of Alchemist, whereas the Arc 140T Mobile lists HD Graphics-M as its predecessor, reflecting different product lineages.

For integrated graphics duties, where the GPU shares the system memory and operates within a low power budget, the Arc 140T Mobile is the only viable choice between these two. For dedicated graphics performance in a desktop system, the B770 is the clear selection based on every compute and memory metric in the database. There is no scenario in the recorded data where the two parts compete directly; they serve different segments.

FAQ

Q: What is the FP32 performance difference between the Intel Arc 140T Mobile and the Intel Arc B770?

A: The Arc B770 delivers 19.66 TFLOPS, while the Arc 140T Mobile delivers 4.813 TFLOPS, a ratio of approximately 4.1x in favor of the B770.

Q: How much memory does each GPU have?

A: The Arc B770 has 16 GB of GDDR6 memory on a 256-bit bus. The Arc 140T Mobile uses system shared memory, with size and type both listed as system shared.

Q: What power connectors does the Arc B770 require?

A: The Arc B770 requires one 6-pin and one 8-pin power connector, and the suggested PSU rating is 550 W. The Arc 140T Mobile is an IGP with no power connectors.

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 process node for each chip?

A: Both are fabricated on a 5 nm process at TSMC. The Arc 140T Mobile uses the Xe-LPG+ architecture, and the Arc B770 uses the Xe2-HPG architecture.

Q: What are the ray tracing core counts?

A: The Arc B770 has 32 ray tracing cores, while the Arc 140T Mobile has 8 ray tracing cores.

Specification Differences

The two parts differ across nearly every physical and performance specification in the database. The Arc 140T Mobile uses the Arrow Lake-H chip with Xe-LPG+ architecture, while the Arc B770 uses the BMG-G31 chip with Xe2-HPG architecture. The process node is identical at 5 nm from TSMC, but the B770 die measures 368 mm², while the mobile die size is recorded as unknown.

Clock speeds differ significantly. The Arc 140T Mobile runs at a 300 MHz base and 2350 MHz boost. The Arc B770 runs at a 2100 MHz base and 2400 MHz boost. Memory clocks also differ: the B770 uses 2000 MHz with 16 Gbps effective speed, while the mobile part has system shared memory with no dedicated clock.

The memory subsystem is fundamentally different. The B770 has 16 GB of GDDR6 on a 256-bit bus with 512.0 GB/s bandwidth. The Arc 140T Mobile has system shared memory with system dependent bandwidth. The compute resources scale accordingly: 4096 shading units, 256 TMUs, 128 ROPs, and 32 RT cores on the B770 versus 1024 shading units, 64 TMUs, 32 ROPs, and 8 RT cores on the mobile part.

Throughput rates follow the resource counts. The B770 produces 307.2 GPixel/s and 614.4 GTexel/s, while the Arc 140T Mobile produces 75.20 GPixel/s and 150.4 GTexel/s. FP32 and FP16 throughput are 19.66 TFLOPS and 39.32 TFLOPS on the B770, versus 4.813 TFLOPS and 9.626 TFLOPS on the mobile part.

Power and form factor diverge completely. The Arc 140T Mobile draws 35 W, is an IGP, uses no power connectors, and lists its display outputs as portable device dependent. The Arc B770 draws 225 W, is a dual-slot card, requires a 6-pin and an 8-pin power connector, suggests a 550 W PSU, and provides 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs. The bus interface also differs: IGP versus PCIe 4.0 x16.

Release dates place them in different temporal slots: the Arc 140T Mobile released on 2025-01-12, and the Arc B770 on 2025-12-31. The B770 lists Alchemist as its predecessor, while the Arc 140T Mobile lists HD Graphics-M.

Architecture Differences

The Intel Arc 140T Mobile uses the Xe-LPG+ architecture, part of the Arc Graphics-M (Arrow Lake) generation. The Intel Arc B770 uses the Xe2-HPG architecture, part of the Battlemage (Arc 7) generation. These are separate architecture generations with different design goals: Xe-LPG+ targets integrated graphics within the Arrow Lake-H chip, while Xe2-HPG targets discrete desktop graphics.

The chip designs reflect these goals. The Arc 140T Mobile sits inside the Arrow Lake-H processor, sharing the system memory controller and relying on system shared memory. The B770 is built on the BMG-G31 die, a discrete chip with a 368 mm² area, dedicated GDDR6 memory, and a PCIe 4.0 x16 interface. The mobile part has no dedicated memory bus, while the B770 has a 256-bit bus.

Shading architecture scales by a factor of four. The B770 has 4096 shading units versus 1024 on the Arc 140T Mobile. Texture mapping units scale by four as well: 256 versus 64. Raster output units also scale by four: 128 versus 32. Ray tracing cores scale by four: 32 versus 8. The consistent 4x scaling across shading, texture, and raster units suggests the B770 uses a wider execution architecture, while the ray tracing core count confirms a proportional increase in RT hardware.

The clock strategy differs by architecture role. The mobile part has a very low 300 MHz base clock, allowing deep idle states, and boosts to 2350 MHz. The desktop B770 starts at 2100 MHz base and boosts to 2400 MHz, a narrow 300 MHz range that indicates sustained high-frequency operation. The mobile chip's 2050 MHz boost range reflects dynamic power management typical of integrated GPUs.

The memory architecture is the most fundamental divergence. The B770 uses 2000 MHz GDDR6 with 16 Gbps effective speed on a 256-bit bus, yielding 512.0 GB/s. The Arc 140T Mobile has no dedicated memory; its bandwidth is system dependent, meaning performance scales with the host platform's memory configuration. Both parts support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so the API feature set is identical.

Power delivery differs accordingly. The 35 W TDP of the Arc 140T Mobile aligns with integrated graphics sharing the Arrow Lake-H package. The 225 W TDP of the B770 requires a dual-slot cooler and external power connectors. The suggested 550 W PSU indicates the B770 is designed for a full desktop power budget. The production status for the Arc 140T Mobile is listed as active, while the B770 has no production status recorded.