Intel Arc B390 vs Intel Arc Graphics 1 Xe Mobile Comparison

The Intel Arc B390 and the Intel Arc Graphics 1 Xe Mobile are both integrated graphics processors from Intel, but they serve entirely different segments of the mobile market. The B390 is a large, high-throughput part designed for Panther Lake processors, while the 1 Xe Mobile is a small, efficient unit for Wildcat Lake. The recorded data shows a massive performance gulf between the two, defined by their respective execution resources and power envelopes.

Head-to-Head Benchmarks

The database contains a single benchmark result for the Intel Arc B390: a 3DMark Steel Nomad DX12 score of 1482 points. This score places the Arc B390 in the 9th percentile of all GPUs, meaning it outperforms a small fraction of the entire database. For the Intel Arc Graphics 1 Xe Mobile, there are no recorded benchmark scores, and its average benchmark score is listed as 0. Consequently, there are no head-to-head benchmark entries, and the win count for both parts is 0. The comparison must therefore be based on the B390's absolute score and the theoretical specifications of the 1 Xe Mobile.

The Arc B390's score of 1482 puts it in a specific performance tier. Its nearest rivals in the database are all NVIDIA parts with similar average scores. The NVIDIA GeForce GT 520MX averages 1463 points, which is 1.3% behind the B390. The NVIDIA GeForce 800M is 1.5% behind with 1460 points. The NVIDIA GeForce GT 625 OEM trails by 2.5% with 1446 points, and the NVIDIA GeForce GT 710 is 2.7% behind with 1443 points. These deltas indicate that the B390 is marginally faster than this group of older discrete and integrated parts. While the B390 is not a high-performance part by modern standards, it does deliver a measurable lead over these specific rivals.

In contrast, the Arc Graphics 1 Xe Mobile has no benchmark data to compare. Its theoretical maximum FP32 throughput is 588.8 GFLOPS, which is a fraction of the B390's 7.680 TFLOPS. Even with no empirical score, the specification gap suggests that the 1 Xe Mobile would occupy a much lower performance stratum, likely far below the B390 and its nearest rivals. The B390's 1482-point score is the only concrete performance number available, and it serves as the reference point for the entire analysis.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The Intel Arc B390 has an average benchmark score of 1482, while the Intel Arc Graphics 1 Xe Mobile has an average benchmark score of 0, as no benchmark results are recorded for it.

Q: What is the performance difference between the Arc B390 and its closest rival?

A: The Arc B390 scores 1482 in 3DMark Steel Nomad DX12. Its nearest rival, the NVIDIA GeForce GT 520MX, scores 1463, which is a delta of 1.3%. The B390 is ahead of all four listed rivals by margins ranging from 1.3% to 2.7%.

Q: How do the shading unit counts compare between the two GPUs?

A: The Intel Arc B390 has 1536 shading units, whereas the Intel Arc Graphics 1 Xe Mobile has 128 shading units. This is a 12x difference in raw shader count.

Q: What is the difference in pixel fill rate?

A: The Arc B390 achieves a pixel rate of 60.00 GPixel/s, while the Arc 1 Xe Mobile achieves 9.200 GPixel/s. The B390 is significantly faster in this metric.

Q: Do both GPUs support the same graphics APIs?

A: Yes, both the Intel Arc B390 and the Intel Arc Graphics 1 Xe Mobile support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: Which GPU has the higher boost clock?

A: The Intel Arc B390 has a boost clock of 2500 MHz, while the Intel Arc Graphics 1 Xe Mobile has a boost clock of 2300 MHz.

Architecture Differences

Both GPUs share the same fundamental architecture, Xe3-LPG, and are fabricated on the same 3 nm process node at Intel. The core difference lies in the scale of the implementation. The Arc B390 is built on the Panther Lake chip, while the Arc 1 Xe Mobile uses the Wildcat Lake chip. This results in vastly different execution resource counts. The B390 packs 1536 shading units, 48 texture mapping units (TMUs), and 24 raster output units (ROPs). The 1 Xe Mobile is dramatically smaller, with only 128 shading units, 8 TMUs, and 4 ROPs. The ray tracing hardware follows the same pattern: the B390 has 12 RT cores, while the 1 Xe Mobile has just 1. The B390 is a high-end integrated part for a larger processor package, while the 1 Xe Mobile is a minimal configuration designed for the lowest power tiers of the Wildcat Lake platform.

The memory subsystem is identical in concept for both: each uses System Shared memory, meaning there is no dedicated VRAM. The bus width is also listed as System Shared, and the bandwidth is System Dependent. This indicates that both GPUs rely on the host system's memory controller. The practical bandwidth will be determined by the platform, but the B390, with its larger processing core, is designed to consume more data. The compute rates reflect the resource disparity. The B390's FP32 throughput is 7.680 TFLOPS, with FP16 at 15.36 TFLOPS (2:1). The 1 Xe Mobile's FP32 throughput is 588.8 GFLOPS, with FP16 at 1,177.6 GFLOPS (2:1). The B390 is roughly 13 times faster in FP32.

The power envelopes are distinct. The B390 has a TDP of 80 W, which is substantial for an integrated part. The 1 Xe Mobile has a TDP of 25 W, indicating a design focused on efficiency and low thermal output. Both are listed as IGP slot width with no power connectors, and both rely on portable device dependent display outputs. The production status for both is Active. The B390 was released on 2026-01-26, while the 1 Xe Mobile was released later on 2026-04-15. The 1 Xe Mobile lists its predecessor as HD Graphics-M, while the B390 has no predecessor listed.

Specification Differences

The two GPUs differ in almost every measurable specification. The boost clock is different: the Arc B390 runs at 2500 MHz, while the Arc 1 Xe Mobile runs at 2300 MHz. The base clock for both is 300 MHz. The shading units differ significantly, with the B390 at 1536 and the 1 Xe Mobile at 128. The TMU count is 48 for the B390 versus 8 for the 1 Xe Mobile. The ROP count is 24 for the B390 versus 4 for the 1 Xe Mobile. The RT core count is 12 for the B390 versus 1 for the 1 Xe Mobile.

The pixel rate is 60.00 GPixel/s for the B390 and 9.200 GPixel/s for the 1 Xe Mobile. The texture rate is 120.0 GTexel/s for the B390 and 18.40 GTexel/s for the 1 Xe Mobile. The FP32 performance is 7.680 TFLOPS for the B390 and 588.8 GFLOPS for the 1 Xe Mobile. The FP16 performance is 15.36 TFLOPS for the B390 and 1,177.6 GFLOPS for the 1 Xe Mobile. The TDP is 80 W for the B390 and 25 W for the 1 Xe Mobile. The chip used is Panther Lake for the B390 and Wildcat Lake for the 1 Xe Mobile. The generation is Arc Graphics-M (Panther Lake) for the B390 and Arc Graphics-M (Wildcat Lake) for the 1 Xe Mobile. The release dates are 2026-01-26 for the B390 and 2026-04-15 for the 1 Xe Mobile. The 1 Xe Mobile has a predecessor, HD Graphics-M, while the B390 does not.

Where Each One Wins

The Intel Arc B390 wins in every performance category recorded. Its 1536 shading units provide a massive compute advantage over the 1 Xe Mobile's 128 units. This translates directly to the FP32 and FP16 throughput figures, where the B390 is more than ten times faster. The B390 also wins in texture and pixel processing, with a texture rate of 120.0 GTexel/s and a pixel rate of 60.00 GPixel/s, compared to 18.40 GTexel/s and 9.200 GPixel/s for the 1 Xe Mobile. The B390's 12 RT cores give it a substantial lead in ray tracing workloads over the 1 Xe Mobile's single RT core. The B390's higher boost clock of 2500 MHz also contributes to its performance edge. The B390's 80 W TDP allows it to sustain these higher clocks and feed its larger execution units.

The Intel Arc Graphics 1 Xe Mobile wins in efficiency and power consumption. Its 25 W TDP is less than a third of the B390's 80 W TDP. This makes it suitable for ultra-portable devices where battery life and thermals are the primary constraints. The 1 Xe Mobile's lower resource counts (128 shading units, 8 TMUs, 4 ROPs, 1 RT core) require far less silicon area and power. While it has no benchmark scores to confirm its performance, its specification profile suggests it is intended for basic graphics output and light acceleration, not demanding workloads. The B390 is the clear choice for any application where raw graphics performance matters, while the 1 Xe Mobile is the choice for minimal power draw in thin-and-light systems.

The Verdict

The data shows a clear separation of roles. The Intel Arc B390 is the superior part for actual graphics performance. Its 3DMark Steel Nomad score of 1482, while placing it in the 9th percentile of all GPUs, still puts it ahead of its nearest rivals by 1.3% to 2.7%. It has over ten times the shading units, TMUs, and ROPs of the 1 Xe Mobile. Its FP32 throughput of 7.680 TFLOPS dwarfs the 588.8 GFLOPS of the smaller part. For any user running 3D applications, games, or GPU-accelerated workloads, the B390 is the only viable option between the two. Its higher 80 W TDP is the price for that capability.

The Intel Arc Graphics 1 Xe Mobile is a different product category. With no benchmark scores, its performance is unverified, but its specifications point to a strictly entry-level part. It is built for the Wildcat Lake chip, which is a lower-power platform. Its 25 W TDP and minimal execution resources make it suitable for basic desktop rendering, video playback, and light productivity tasks. It is not designed to compete with the B390. The B390 is for high-performance mobile processors, while the 1 Xe Mobile is for the most power-constrained devices. The choice is dictated by the platform and the workload. The B390 is the clear winner in graphics capability, while the 1 Xe Mobile is the clear winner in power efficiency. The benchmark data only supports the B390's performance claims.