Intel Arc B390 vs Intel Arc G3 Comparison

Intel Arc B390 and Intel Arc G3 are both integrated graphics solutions from Intel, built on the same Xe3-LPG architecture and Panther Lake chip. They share the same 3 nm process node and foundry, but the database records show they are positioned differently in terms of compute resources, clock speeds, power draw, and measured performance. The B390 has a recorded 3DMark Steel Nomad DX12 score of 1482, placing it at the 9th percentile among all GPUs, while the G3 has no recorded benchmark scores in the database, though it holds a 50th percentile ranking based on its specifications. This analysis draws exclusively from the recorded data to compare the two.

The Verdict

The data indicates that the Intel Arc B390 is the stronger performer of the two, based on its recorded benchmark score and higher compute specifications. The B390 achieves a 3DMark Steel Nomad DX12 score of 1482, which places it ahead of several NVIDIA rivals in the database, including the GeForce GT 520MX (1463, 1.3% behind), the GeForce 800M (1460, 1.5% behind), the GeForce GT 625 OEM (1446, 2.5% behind), and the GeForce GT 710 (1443, 2.7% behind). The Arc G3, by contrast, has no recorded benchmark results, so its actual performance cannot be directly compared from the data. The B390 also leads in every compute metric: it has 1536 shading units versus 1280, 48 texture mapping units versus 40, 24 ROPs versus 20, and 12 ray tracing cores versus 10. The B390’s boost clock is 2500 MHz compared to the G3’s 2400 MHz, which contributes to its higher fill rates and floating-point throughput. The B390 delivers 60.00 GPixel/s and 120.0 GTexel/s, while the G3 delivers 48.00 GPixel/s and 96.00 GTexel/s. For FP32 compute, the B390 reaches 7.680 TFLOPS versus the G3’s 6.144 TFLOPS; for FP16, the B390 reaches 15.36 TFLOPS (2:1) versus the G3’s 12.29 TFLOPS (2:1). The B390 carries an 80 W TDP, while the G3 is rated at 25 W, making the G3 the lower-power option for portable devices where battery life and thermal limits are primary concerns. The B390 is the pick for users needing the highest integrated graphics performance recorded in this database, while the G3 is the pick for users prioritizing minimal power consumption, with the understanding that its performance is not yet measured.

Architecture Differences

Both the Intel Arc B390 and the Intel Arc G3 are built on the same Xe3-LPG architecture, using the Panther Lake chip, and are both fabricated on Intel’s 3 nm process node. The architecture is identical in its fundamental design, with both supporting DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The key differences lie in the execution resources and clock behavior. The B390 has a higher base clock of 300 MHz, same as the G3, but its boost clock reaches 2500 MHz, which is 100 MHz higher than the G3’s 2400 MHz boost. The B390 packs 1536 shading units, 48 TMUs, 24 ROPs, and 12 ray tracing cores, whereas the G3 has 1280 shading units, 40 TMUs, 20 ROPs, and 10 ray tracing cores. This represents a 20% increase in shading units, TMUs, and ROPs for the B390, and a 20% increase in ray tracing cores as well. The memory subsystem is identical in both cases: both use System Shared memory, with a System Shared bus width and System Dependent bandwidth. Neither has dedicated VRAM, and both rely on the host system’s memory. The B390’s higher TDP of 80 W versus the G3’s 25 W likely enables the higher boost clock and larger execution resource allocation, though the database does not specify cooling requirements beyond the integrated form factor. Both are classified as IGP (integrated graphics processor) with no power connectors, and both have display outputs described as Portable Device Dependent. The production status for both is Active, with the B390 released on 2026-01-26 and the G3 released on 2026-05-31. No transistor counts or die sizes are recorded for either.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries between the Intel Arc B390 and the Intel Arc G3. However, the B390 has a single recorded benchmark result: 3DMark Steel Nomad DX12, with a score of 1482. The G3 has an empty benchmark array, meaning no measured performance data is available for it. The B390’s score places it at the 9th percentile among all GPUs in the database, which is low overall but still competitive against its nearest recorded rivals. The nearest rival to the B390 is the NVIDIA GeForce GT 520MX, with an average score of 1463, which is 1.3% behind the B390. The GeForce 800M follows at 1460 (1.5% behind), the GeForce GT 625 OEM at 1446 (2.5% behind), and the GeForce GT 710 at 1443 (2.7% behind). This indicates that the B390, despite its low overall percentile, outperforms these older NVIDIA integrated and entry-level discrete parts by a modest margin. The G3’s percentile ranking of 50 is based on its specification profile rather than any measured score, and since its average benchmark score is 0, the database treats its performance as unverified. The absence of head-to-head data means that any comparison of the two must rely on the recorded compute specifications and the B390’s single benchmark score. The B390’s higher pixel rate of 60.00 GPixel/s versus 48.00 GPixel/s, and texture rate of 120.0 GTexel/s versus 96.00 GTexel/s, are consistent with its larger ROP and TMU counts. The FP32 throughput difference is 1.536 TFLOPS in favor of the B390, and the FP16 difference is 3.07 TFLOPS in favor of the B390, both derived from the recorded values. The B390’s boost clock advantage of 100 MHz, combined with its extra execution units, accounts for these gaps in raw throughput.

FAQ

Q: Which GPU has a higher recorded benchmark score?

A: The Intel Arc B390 has a recorded 3DMark Steel Nomad DX12 score of 1482. The Intel Arc G3 has no recorded benchmark scores in the database, with an average benchmark score of 0.

Q: What are the shading unit counts for each GPU?

A: The Intel Arc B390 has 1536 shading units, while the Intel Arc G3 has 1280 shading units, a difference of 256 units in favor of the B390.

Q: How do the boost clocks compare between the two?

A: The Intel Arc B390 has a boost clock of 2500 MHz, which is 100 MHz higher than the Intel Arc G3’s boost clock of 2400 MHz. Both have a base clock of 300 MHz.

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

A: The Intel Arc B390 has a TDP of 80 W, while the Intel Arc G3 has a TDP of 25 W, making the G3 the lower-power option by a margin of 55 W.

Q: Do both GPUs support the same graphics APIs?

A: Yes, both the Intel Arc B390 and the Intel Arc G3 support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, as recorded in the database.

Q: How does the B390 compare to its nearest rivals in the database?

A: The B390 is 1.3% ahead of the NVIDIA GeForce GT 520MX (1463), 1.5% ahead of the GeForce 800M (1460), 2.5% ahead of the GeForce GT 625 OEM (1446), and 2.7% ahead of the GeForce GT 710 (1443).

Where Each One Wins

The Intel Arc B390 wins on every measured performance metric in the database. Its 3DMark Steel Nomad DX12 score of 1482 is the only recorded benchmark result between the two, and it confirms that the B390 delivers functional performance, albeit at the 9th percentile overall. The B390’s compute specifications are uniformly higher: 1536 shading units versus 1280, 48 TMUs versus 40, 24 ROPs versus 20, and 12 ray tracing cores versus 10. The B390 also has a higher boost clock (2500 MHz versus 2400 MHz), higher pixel rate (60.00 GPixel/s versus 48.00 GPixel/s), higher texture rate (120.0 GTexel/s versus 96.00 GTexel/s), and higher FP32 and FP16 throughput (7.680 TFLOPS and 15.36 TFLOPS versus 6.144 TFLOPS and 12.29 TFLOPS). The B390 is the clear choice for any workload that depends on raw graphics throughput, including gaming and GPU-accelerated compute, based on the recorded data. The Intel Arc G3, on the other hand, wins on power efficiency. Its TDP of 25 W is less than one-third of the B390’s 80 W, making it the more suitable option for portable devices where thermal and battery constraints are critical. The G3 also has a later release date (2026-05-31 versus 2026-01-26), though the database does not indicate any performance advantage from this. The G3’s 50th percentile ranking is based on specifications, not measurements, so it cannot claim a performance win. In summary, the B390 wins for performance, and the G3 wins for power consumption.

Specification Differences

The following fields differ between the Intel Arc B390 and the Intel Arc G3, based on the recorded data:

• Boost Clock: B390 at 2500 MHz, G3 at 2400 MHz.
• Shading Units: B390 has 1536, G3 has 1280.
• Texture Mapping Units: B390 has 48, G3 has 40.
• Render Output Units: B390 has 24, G3 has 20.
• Ray Tracing Cores: B390 has 12, G3 has 10.
• Pixel Rate: B390 at 60.00 GPixel/s, G3 at 48.00 GPixel/s.
• Texture Rate: B390 at 120.0 GTexel/s, G3 at 96.00 GTexel/s.
• FP32 Performance: B390 at 7.680 TFLOPS, G3 at 6.144 TFLOPS.
• FP16 Performance: B390 at 15.36 TFLOPS (2:1), G3 at 12.29 TFLOPS (2:1).
• TDP: B390 at 80 W, G3 at 25 W.
• Release Date: B390 on 2026-01-26, G3 on 2026-05-31.
• Recorded Benchmark Score: B390 has 1482 (3DMark Steel Nomad DX12), G3 has none.
• Percentile vs All GPUs: B390 at 9, G3 at 50.
• Average Benchmark Score: B390 at 1482, G3 at 0.

Fields that are identical include the architecture (Xe3-LPG), chip (Panther Lake), process node (3 nm), foundry (Intel), base clock (300 MHz), memory configuration (System Shared for size, type, and bus width, with System Dependent bandwidth), slot width (IGP), power connectors (None), bus interface (IGP), display outputs (Portable Device Dependent), and supported APIs (DirectX 12 Ultimate 12_2, OpenGL 4.6, Vulkan 1.4). Transistor counts, die sizes, and launch MSRP values are not recorded for either product.