Intel Arc B770 vs Intel Arc Graphics 48EU Mobile Comparison

Intel Arc B770 and Intel Arc Graphics 48EU Mobile occupy opposite ends of Intel’s graphics spectrum, yet both carry the Arc name. The B770 is a dual-slot desktop add-in board built on the Xe2-HPG architecture, while the 48EU Mobile is an integrated graphics processor within the Meteor Lake laptop chip. The database shows a 50th percentile ranking for both parts, but that parity in percentile obscures a massive gulf in raw specifications, power envelopes, and intended workloads.

Where Each One Wins

The Intel Arc B770 wins every scenario that demands discrete graphics throughput. Its shading unit count of 4096 dwarfs the 384 units in the 48EU Mobile, and its 256 texture mapping units versus 24 gives it a 10.7x advantage in texture processing. The B770’s 128 ROPs handle pixel output at 307.2 GPixel/s, compared to 14.40 GPixel/s for the mobile part, a 21.3x difference. Desktop gaming at high resolutions, content creation with heavy shader workloads, and any task that saturates memory bandwidth favor the B770 by a wide margin.

The Intel Arc Graphics 48EU Mobile wins the efficiency and portability segment. Its 28 W TDP is a fraction of the B770’s 225 W envelope, and its Ring Bus interface requires no dedicated power connectors. The mobile part relies on System Shared memory, which eliminates the need for separate VRAM allocation and suits compact laptops where space and thermals are constrained. Its 300 MHz base clock and 1800 MHz boost clock prioritize power conservation over peak performance. For light productivity, video playback, and casual gaming on battery power, the 48EU Mobile delivers usable graphics without the bulk of a discrete board.

The architectural split reinforces this divide. The B770 is a 368 mm² die on TSMC’s 5 nm process, while the 48EU Mobile is a 10 nm Intel Meteor Lake component. The B770’s 512.0 GB/s memory bandwidth from 16 GB of GDDR6 on a 256 bit bus enables high-resolution texture streaming and large dataset handling. The 48EU Mobile’s System Dependent bandwidth means its performance scales with the host laptop’s memory configuration. The data clearly shows the B770 as the performance leader and the 48EU Mobile as the integration leader.

Architecture Differences

The two GPUs share the Intel Arc branding but use different architectures. The B770 is built on Xe2-HPG, the second-generation high-performance graphics architecture, while the 48EU Mobile uses Xe-LPG, the low-power graphics variant designed for integrated use. This distinction explains the divergent feature sets. The B770 includes 32 dedicated ray tracing cores; the 48EU Mobile lists none. DirectX support differs as well: the B770 reaches 12 Ultimate (12_2), while the 48EU Mobile is capped at 12 (12_1).

The manufacturing processes reflect their roles. The B770 is fabricated by TSMC on a 5 nm node, enabling 4096 shading units and a 2400 MHz boost clock within a 225 W power budget. The 48EU Mobile uses Intel’s 10 nm process, limiting it to 384 shading units and a 1800 MHz boost clock inside a 28 W envelope. Die size data exists only for the B770 at 368 mm²; the mobile part’s die size is not recorded in the database.

Compute throughput illustrates the scale difference. The B770 delivers 19.66 TFLOPS of FP32 performance and 39.32 TFLOPS of FP16 via 2:1 ratio. The 48EU Mobile produces 1,382.4 GFLOPS of FP32 and 2.765 TFLOPS of FP16. That means the B770 offers roughly 14.2x the FP32 compute of the mobile part. Pixel fill rates tell a similar story: 307.2 GPixel/s versus 14.40 GPixel/s. Texture fill rates of 614.4 GTexel/s versus 43.20 GTexel/s show a 14.2x gap in texture throughput as well.

Memory architecture could not differ more. The B770 uses 16 GB of GDDR6 on a 256 bit bus with 512.0 GB/s bandwidth. The 48EU Mobile uses System Shared memory with System Dependent bandwidth, meaning its performance is tied to the laptop’s RAM. The B770 connects via PCIe 4.0 x16, while the mobile part uses a Ring Bus interface. The B770’s memory clocks at 2000 MHz with 16 Gbps effective speed; the mobile part has no dedicated memory clock because it shares system memory.

Display output options also separate the two. The B770 provides 1x HDMI 2.1a and 3x DisplayPort 2.1 for multi-monitor desktop setups. The 48EU Mobile’s display outputs are listed as Portable Device Dependent, reflecting its role in laptops where the manufacturer controls connectivity. Both support OpenGL 4.6 and Vulkan 1.4, but the B770’s DirectX 12 Ultimate support enables advanced features unavailable on the 48EU Mobile.

The B770 requires a 550 W suggested PSU and uses 1x 6-pin plus 1x 8-pin power connectors. The 48EU Mobile needs no external power because it draws from the laptop’s 28 W allocation. The B770 ships as a dual-slot card; the 48EU Mobile is an IGP soldered to the motherboard. Release dates differ by two years: the 48EU Mobile launched on 2023-12-13, while the B770 appears in the database with a 2025-12-31 release date. The B770’s predecessor is Alchemist; the 48EU Mobile’s predecessor is HD Graphics-M.

The Verdict

The benchmark database positions these as entirely different product classes. The Intel Arc B770 is a discrete desktop GPU for users who need maximum throughput: 4096 shading units, 32 ray tracing cores, 16 GB GDDR6, and 512.0 GB/s bandwidth. The Intel Arc Graphics 48EU Mobile is an integrated solution for laptops where 28 W power draw and System Shared memory define the constraints.

Pick the B770 when the workload requires sustained high performance. Its 19.66 TFLOPS FP32 compute, 307.2 GPixel/s pixel rate, and 614.4 GTexel/s texture rate place it in a different performance tier entirely. The 48EU Mobile’s 1,382.4 GFLOPS FP32 and 43.20 GTexel/s texture rate suit lighter tasks that do not stress memory bandwidth. The B770’s dedicated memory and PCIe 4.0 x16 interface ensure consistent performance. The 48EU Mobile’s Ring Bus and System Dependent bandwidth tie its results to the host system.

Pick the 48EU Mobile when power efficiency and integration matter more than raw speed. Its 28 W TDP versus the B770’s 225 W TDP makes it viable for thin-and-light notebooks. The mobile part’s 300 MHz base clock conserves energy during idle and light loads, while its 1800 MHz boost handles brief bursts of activity. The B770 cannot operate without a 550 W PSU and dual power connectors, making it unsuitable for portable systems.

The data shows no ambiguity: the B770 wins on every measured performance metric, while the 48EU Mobile wins on power and integration. Neither part is a substitute for the other.

FAQ

Q: Which GPU has more shading units?

A: The Intel Arc B770 has 4096 shading units, while the Intel Arc Graphics 48EU Mobile has 384 shading units.

Q: What is the memory configuration of each GPU?

A: The B770 uses 16 GB of GDDR6 on a 256 bit bus with 512.0 GB/s bandwidth. The 48EU Mobile uses System Shared memory with System Dependent bandwidth.

Q: Do both GPUs support ray tracing?

A: No. The B770 includes 32 ray tracing cores. The 48EU Mobile lists no ray tracing cores in the database.

Q: What is the power draw difference?

A: The B770 has a 225 W TDP, while the 48EU Mobile has a 28 W TDP.

Q: Which GPU has higher pixel fill rate?

A: The B770 delivers 307.2 GPixel/s, compared to 14.40 GPixel/s for the 48EU Mobile.

Q: What DirectX versions do they support?

A: The B770 supports DirectX 12 Ultimate (12_2), while the 48EU Mobile supports DirectX 12 (12_1).

Head-to-Head Benchmarks

The database contains no direct benchmark scores for either GPU, so the comparison relies on recorded specifications and architectural data. The largest wins for the B770 appear in compute and memory throughput. FP32 performance of 19.66 TFLOPS versus 1,382.4 GFLOPS gives the B770 a 14.2x advantage. FP16 performance of 39.32 TFLOPS versus 2.765 TFLOPS shows a similar 14.2x gap. These figures translate directly to workloads like 3D rendering, scientific simulation, and machine learning inference.

Memory bandwidth delivers the most lopsided comparison. The B770’s 512.0 GB/s from GDDR6 exceeds the 48EU Mobile’s System Dependent bandwidth, which cannot be quantified in the database but is inherently limited by shared system memory. The B770’s 256 bit bus width and 16 GB capacity allow large textures and datasets to reside on the GPU. The 48EU Mobile’s System Shared memory must compete with the CPU for bandwidth.

Texture and pixel rates reinforce the B770’s dominance. The B770’s 614.4 GTexel/s texture rate is 14.2x the 48EU Mobile’s 43.20 GTexel/s. Pixel output of 307.2 GPixel/s versus 14.40 GPixel/s represents a 21.3x difference, the largest ratio in the comparison. This matters for high-resolution gaming and display output, where ROP throughput determines fill performance.

Clock speeds tell a nuanced story. The B770’s base clock of 2100 MHz and boost of 2400 MHz are higher than the 48EU Mobile’s 300 MHz base and 1800 MHz boost. However, the mobile part’s 300 MHz base clock is a power-saving feature, not a performance limitation. The B770’s 2000 MHz memory clock with 16 Gbps effective speed has no equivalent on the 48EU Mobile, which uses System Shared memory.

Ray tracing capability separates the two clearly. The B770’s 32 RT cores enable hardware-accelerated ray tracing, a feature absent from the 48EU Mobile. Games and applications that use DirectX 12 Ultimate features run only on the B770, as the 48EU Mobile is limited to DirectX 12 (12_1). This architectural gap is binary: either the hardware supports the feature or it does not.

The B770 also wins on interface bandwidth. PCIe 4.0 x16 provides a dedicated high-speed connection to the host system, while the 48EU Mobile’s Ring Bus is an internal interconnect with no comparable external throughput. Display connectivity favors the B770 as well, with 1x HDMI 2.1a and 3x DisplayPort 2.1 versus the mobile part’s Portable Device Dependent outputs.

Power consumption flips the comparison entirely. The B770’s 225 W TDP and 550 W suggested PSU make it a desktop-only component. The 48EU Mobile’s 28 W TDP and IGP slot width allow it to operate in laptops without external power. The B770 requires 1x 6-pin and 1x 8-pin power connectors; the 48EU Mobile requires none. For battery-powered devices, the 48EU Mobile is the only viable option in this pairing.

The process node difference explains much of the performance gap. TSMC’s 5 nm process for the B770 packs 4096 shading units into a 368 mm² die. Intel’s 10 nm process for the 48EU Mobile accommodates only 384 shading units. The B770’s 2400 MHz boost clock and 225 W TDP represent the high-performance end of the design spectrum, while the 48EU Mobile’s 1800 MHz boost and 28 W TDP embody the efficiency end.

The B770’s release date of 2025-12-31 places it after the 48EU Mobile’s 2023-12-13 launch. Both parts remain in the database with a 50th percentile ranking versus all GPUs, but that ranking reflects the diversity of the GPU landscape rather than parity between these two specific products. The recorded data shows the B770 as a high-performance discrete GPU and the 48EU Mobile as a low-power integrated GPU, with no benchmark overlap between them.