AMD Radeon RX 7400 OEM vs Intel Arc B390 Comparison

The Verdict

The recorded data positions these two graphics processors in entirely different segments. The AMD Radeon RX 7400 OEM is a discrete, single-slot add-in card built on the RDNA 3.0 architecture with a 6 nm process node, while the Intel Arc B390 is an integrated graphics processor (IGP) based on the Xe3-LPG architecture and a 3 nm node. Benchmark results show the Arc B390 achieves a 3DMark Steel Nomad DX12 score of 1482, which places it in the 9th percentile among all GPUs in the database. The RX 7400 OEM has a percentile rank of 50, indicating it sits near the midpoint of the database's performance distribution. The Arc B390's nearest rivals in the database are all legacy NVIDIA parts: it leads the GeForce GT 520MX by 1.3%, the GeForce 800M by 1.5%, the GeForce GT 625 OEM by 2.5%, and the GeForce GT 710 by 2.7%. These are narrow margins against very old hardware, confirming that the Arc B390 is a low-end integrated solution. The RX 7400 OEM, with no recorded benchmarks or rival comparisons in the database, cannot be directly scored against the Arc B390 from the available measurements, but its architecture, memory configuration, and percentile placement indicate a substantially different performance class. Users requiring a standalone desktop GPU with dedicated video memory should select the RX 7400 OEM. Users building a compact or portable system where a discrete card is impractical and who accept integrated-level graphics should consider the Arc B390.

Architecture Differences

The AMD Radeon RX 7400 OEM uses the Navi 33 chip, which is built on the RDNA 3.0 architecture under the codename Hotpink Bonefish. It belongs to the Navi III generation within the RX 7000 series. The chip is fabricated by TSMC on a 6 nm process node and contains 13,300 million transistors on a die size of 204 mm², yielding a transistor density of 65.2 million transistors per square millimeter. The Intel Arc B390 uses the Panther Lake chip, which employs the Xe3-LPG architecture and belongs to the Arc Graphics-M (Panther Lake) generation. Intel fabricates this chip on a 3 nm process node, and the database lists transistor count and die size as unknown. The RX 7400 OEM is a discrete card with a 128-bit memory bus and 8 GB of GDDR6 memory, whereas the Arc B390 uses system shared memory with a system dependent bandwidth and bus width. The Arc B390 has a boost clock of 2500 MHz, more than double the RX 7400 OEM's 1100 MHz boost, but the AMD part has a higher base clock at 330 MHz versus 300 MHz. The RX 7400 OEM includes 1792 shading units, 112 texture mapping units, 64 raster operation units, and 28 ray tracing cores. The Arc B390 has 1536 shading units, 48 texture mapping units, 24 raster operation units, and 12 ray tracing cores. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7400 OEM delivers 7.885 TFLOPS FP32 and 7.885 TFLOPS FP16 at a 1:1 ratio. The Arc B390 delivers 7.680 TFLOPS FP32 and 15.36 TFLOPS FP16 at a 2:1 ratio, meaning it has significantly higher half-precision throughput. The RX 7400 OEM's power consumption is rated at 55 W TDP with a single 6-pin power connector and a suggested 250 W power supply. The Arc B390 is an IGP with an 80 W TDP and requires no power connectors.

FAQ

Q: Which processor has the higher boost clock?

A: The Intel Arc B390 has a boost clock of 2500 MHz, while the AMD Radeon RX 7400 OEM has a boost clock of 1100 MHz.

Q: What is the memory configuration of each product?

A: The AMD Radeon RX 7400 OEM has 8 GB of GDDR6 memory on a 128-bit bus with 172.8 GB/s bandwidth. The Intel Arc B390 uses system shared memory with system dependent bandwidth.

Q: How does the Arc B390 compare to its nearest rivals in benchmark scores?

A: The Arc B390 scores 1482 in 3DMark Steel Nomad DX12, which is 1.3% higher than the GeForce GT 520MX, 1.5% higher than the GeForce 800M, 2.5% higher than the GeForce GT 625 OEM, and 2.7% higher than the GeForce GT 710.

Q: What is the process node for each chip?

A: The AMD Radeon RX 7400 OEM uses a 6 nm process node from TSMC. The Intel Arc B390 uses a 3 nm process node from Intel.

Q: Which product has more shading units?

A: The AMD Radeon RX 7400 OEM has 1792 shading units, compared to 1536 shading units on the Intel Arc B390.

Q: What power connectors does each product require?

A: The AMD Radeon RX 7400 OEM requires a single 6-pin power connector and has a 55 W TDP. The Intel Arc B390 requires no power connectors and has an 80 W TDP.

Specification Differences

The AMD Radeon RX 7400 OEM and Intel Arc B390 differ in nearly every recorded specification field. The RX 7400 OEM is built on the RDNA 3.0 architecture with the Navi 33 chip and the codename Hotpink Bonefish. The Arc B390 uses the Xe3-LPG architecture with the Panther Lake chip and no recorded codename. Process nodes differ: 6 nm for AMD, 3 nm for Intel. The RX 7400 OEM has 13,300 million transistors on a 204 mm² die, while the Arc B390's transistor count and die size are unknown. Clock speeds differ substantially: the RX 7400 OEM has a 330 MHz base and 1100 MHz boost, while the Arc B390 has a 300 MHz base and 2500 MHz boost. Memory configurations are fundamentally different: the RX 7400 OEM has 8 GB GDDR6 with a 128-bit bus and 172.8 GB/s bandwidth, while the Arc B390 uses system shared memory with system dependent bandwidth. The RX 7400 OEM has 1792 shading units, 112 TMUs, 64 ROPs, and 28 RT cores. The Arc B390 has 1536 shading units, 48 TMUs, 24 ROPs, and 12 RT cores. Pixel rates are 70.40 GPixel/s for AMD and 60.00 GPixel/s for Intel. Texture rates are 123.2 GTexel/s for AMD and 120.0 GTexel/s for Intel. FP32 throughput is 7.885 TFLOPS for AMD and 7.680 TFLOPS for Intel. FP16 throughput is 7.885 TFLOPS at 1:1 for AMD and 15.36 TFLOPS at 2:1 for Intel. TDP values are 55 W for AMD and 80 W for Intel. The RX 7400 OEM is a single-slot card with 1x 6-pin power connector and a suggested 250 W power supply, while the Arc B390 is an IGP with no power connectors and no suggested PSU. The RX 7400 OEM uses PCIe 4.0 x8, while the Arc B390 uses an IGP bus interface. Display outputs differ: the RX 7400 OEM has 1x HDMI 2.1a and 3x DisplayPort 2.1, while the Arc B390's outputs are portable device dependent. The RX 7400 OEM measures 167 mm or 6.6 inches in length; the Arc B390 has no recorded dimensions. Release dates are 2025-08-07 for the RX 7400 OEM and 2026-01-26 for the Arc B390. The RX 7400 OEM's production status is not recorded, while the Arc B390 is listed as active.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between the RX 7400 OEM and the Arc B390. The only recorded benchmark for either product is the Arc B390's 3DMark Steel Nomad DX12 score of 1482. This score places the Arc B390 in the 9th percentile among all GPUs in the database. Its nearest rivals are all NVIDIA parts from older generations: the GeForce GT 520MX scores 1463, the GeForce 800M scores 1460, the GeForce GT 625 OEM scores 1446, and the GeForce GT 710 scores 1443. The Arc B390 leads each by a narrow margin, between 1.3% and 2.7%. These results indicate that the Arc B390 performs at the level of entry-level discrete GPUs from roughly a decade prior. The RX 7400 OEM has no recorded benchmark scores in the database, so its performance cannot be quantified relative to the Arc B390 or any other product. However, its 50th percentile rank among all GPUs suggests it performs near the median of the database, which is far above the Arc B390's 9th percentile placement. The RX 7400 OEM's architectural advantages include a 128-bit memory bus with 8 GB of dedicated GDDR6 memory at 172.8 GB/s bandwidth, while the Arc B390 relies on system shared memory with system dependent bandwidth. The RX 7400 OEM also has more shading units (1792 versus 1536), more TMUs (112 versus 48), more ROPs (64 versus 24), and more RT cores (28 versus 12). The Arc B390 counters with a higher boost clock (2500 MHz versus 1100 MHz) and more than double the FP16 throughput (15.36 TFLOPS versus 7.885 TFLOPS). The Arc B390's FP16 advantage is tied to its 2:1 ratio, whereas the RX 7400 OEM operates at a 1:1 ratio. In FP32 compute, the RX 7400 OEM is slightly ahead at 7.885 TFLOPS versus 7.680 TFLOPS, a margin of approximately 2.7 percent based on the recorded figures. Pixel rate favors the RX 7400 OEM at 70.40 GPixel/s versus 60.00 GPixel/s, a difference of roughly 17.3 percent. Texture rate is closer: 123.2 GTexel/s for AMD versus 120.0 GTexel/s for Intel, a difference of about 2.7 percent.

Where Each One Wins

The AMD Radeon RX 7400 OEM wins in scenarios that demand dedicated memory bandwidth and higher rasterization throughput. Its 8 GB of GDDR6 memory on a 128-bit bus delivers 172.8 GB/s of bandwidth, which is essential for texture-heavy workloads and higher resolution rendering. The Arc B390's system shared memory has system dependent bandwidth, which can vary with the host platform's memory configuration. The RX 7400 OEM also has a higher pixel rate at 70.40 GPixel/s versus 60.00 GPixel/s, giving it an advantage in fill-rate-bound scenes. Its texture rate of 123.2 GTexel/s edges out the Arc B390's 120.0 GTexel/s. The RX 7400 OEM has 28 ray tracing cores compared to 12 on the Arc B390, which suggests stronger ray tracing performance, although the database does not include a ray tracing benchmark for either product. The RX 7400 OEM's 55 W TDP is lower than the Arc B390's 80 W TDP, making it the more power-efficient option per the recorded specifications, though it requires a 6-pin power connector and a 250 W power supply. The Intel Arc B390 wins in scenarios where integrated graphics are required or preferred. As an IGP with no power connectors and no suggested PSU, it fits into systems where a discrete card cannot be installed. Its 2500 MHz boost clock is more than double the RX 7400 OEM's 1100 MHz, which can benefit lightly-threaded or latency-sensitive workloads. The Arc B390's FP16 throughput of 15.36 TFLOPS is nearly double the RX 7400 OEM's 7.885 TFLOPS, making it the stronger choice for workloads that use half-precision math, such as certain AI inference tasks or compute applications. The Arc B390 is also listed as active in production status, while the RX 7400 OEM's production status is not recorded. The Arc B390's 3DMark Steel Nomad DX12 score of 1482 is the only verified performance metric in the database for either product, and it shows the Arc B390 outperforming several legacy NVIDIA GPUs by margins between 1.3% and 2.7%. The RX 7400 OEM has no recorded benchmark data, so its actual performance in the database's test suite remains unquantified, but its 50th percentile placement indicates it belongs to a different performance tier than the Arc B390's 9th percentile. Users seeking a discrete desktop GPU with dedicated memory and higher pixel throughput should choose the RX 7400 OEM. Users needing an integrated solution with no additional power cabling and strong FP16 compute should choose the Arc B390.