AMD Radeon RX 7900 GRE vs Intel Arc B390 Comparison

Head-to-Head Benchmarks

The recorded database contains a single direct comparison between these two graphics solutions: the 3DMark Steel Nomad DX12 test. In that workload, the AMD Radeon RX 7900 GRE scores 4814, while the Intel Arc B390 scores 1482. The AMD part wins by a margin of 224.8%, a dominant result that places the two products in entirely different performance classes.

For additional context, the AMD card's average benchmark score across all recorded tests is 32456, while the Intel part's average is 1482. The AMD card sits in the 77th percentile among all GPUs in the database, whereas the Intel Arc B390 sits in the 9th percentile. That gap in percentile ranking reinforces what the single head-to-head result shows: the RX 7900 GRE is a high-end discrete graphics card, while the Arc B390 functions as an integrated graphics processor.

Looking at the AMD card's broader benchmark suite, its strongest recorded result is in Geekbench OpenCL with a score of 175758, followed by Geekbench Vulkan at 99850. PassMark G3D shows 27089, and PassMark GPU Compute shows 15016. The Intel Arc B390 has no such breadth of recorded data, with only the single 3DMark Steel Nomad result available. The nearest rivals for the AMD card in the database include the AMD FirePro S10000 at an average score of 32388 (0.2% behind), the AMD Radeon RX 590 GME at 32601 (0.4% ahead), and the AMD Radeon Pro 570X at 32176 (0.9% behind). For the Intel Arc B390, its nearest rivals are all NVIDIA integrated or low-end parts: the GeForce GT 520MX at 1463 (1.3% behind), the GeForce 800M 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). These rival comparisons show that the RX 7900 GRE trades blows with workstation and older enthusiast cards, while the Arc B390 competes with entry-level mobile GPUs from over a decade ago.

Architecture Differences

The AMD Radeon RX 7900 GRE uses the Navi 31 chip built on RDNA 3.0 architecture, with the codename Plum Bonito. It belongs to the Navi III generation within the RX 7000 series. The process node is 5 nm from TSMC, with a transistor count of 57,700 million on a die size of 529 mm². The transistor density is 109.1 million transistors per square millimeter.

The Intel Arc B390 uses the Panther Lake chip built on Xe3-LPG architecture. It belongs to the Arc Graphics-M generation for Panther Lake. The process node is 3 nm, fabricated by Intel. Transistor count, die size, and transistor density are listed as unknown in the database.

The AMD card has 5120 shading units, 320 texture mapping units, and 160 render output units. It includes 80 ray tracing cores. The Intel part has 1536 shading units, 48 TMUs, and 24 ROPs, with 12 ray tracing cores. The AMD card's FP32 compute is 45.98 TFLOPS, while the Intel part delivers 7.680 TFLOPS. FP16 performance is 91.96 TFLOPS on the AMD side versus 15.36 TFLOPS on the Intel side.

Memory architecture differs fundamentally. The RX 7900 GRE has 16 GB of GDDR6 memory on a 256-bit bus, with a bandwidth of 576.0 GB/s. The memory clock is 2250 MHz, operating at 18 Gbps effective. The Arc B390 uses system shared memory, with the bus width and type also system dependent. Its bandwidth is listed as system dependent, and its memory clock is listed as system shared.

The AMD card's clock speeds are 1287 MHz base, 2245 MHz boost, and 1880 MHz game clock. The Intel part has a 300 MHz base clock and a 2500 MHz boost clock, with no game clock listed. Pixel rate on the AMD card is 359.2 GPixel/s versus 60.00 GPixel/s on the Intel part. Texture rate is 718.4 GTexel/s versus 120.0 GTexel/s.

Both products support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD card uses a PCIe 4.0 x16 bus interface, while the Intel part is an integrated graphics processor with an IGP bus interface.

Where Each One Wins

The AMD Radeon RX 7900 GRE wins the only recorded head-to-head benchmark, and it wins by a substantial 224.8% margin in 3DMark Steel Nomad DX12. That test is a modern DirectX 12 workload, which suggests the AMD card has a significant advantage in current-generation gaming and compute tasks that leverage DX12 features. The card's high pixel rate of 359.2 GPixel/s and texture rate of 718.4 GTexel/s indicate strong fill-rate capabilities, which benefit traditional rasterization workloads.

The Intel Arc B390 has no recorded benchmark wins in the database. Its only result is the 3DMark Steel Nomad score of 1482, which places it far behind the AMD card. The Intel part's advantage lies in its power characteristics: it has a TDP of 80 W compared to the AMD card's 260 W. It is an integrated graphics processor with no power connectors and no suggested PSU requirement, making it suitable for compact portable devices. Its display outputs are listed as portable device dependent, which confirms its intended use case in laptops and mobile systems.

The AMD card requires a 600 W suggested PSU and uses two 8-pin power connectors. It is a dual-slot card measuring 276 mm in length, 110 mm in height, and 51 mm in width. The Intel part has no physical dimensions listed, consistent with its IGP nature.

FAQ

Q: How large is the performance gap between the AMD Radeon RX 7900 GRE and the Intel Arc B390 in 3DMark Steel Nomad DX12?

A: The AMD card scores 4814, and the Intel part scores 1482. The AMD card wins by 224.8%.

Q: Which product has more shading units?

A: The AMD Radeon RX 7900 GRE has 5120 shading units. The Intel Arc B390 has 1536 shading units.

Q: What is the memory configuration of each product?

A: The AMD Radeon RX 7900 GRE has 16 GB of GDDR6 memory on a 256-bit bus with 576.0 GB/s bandwidth. The Intel Arc B390 uses system shared memory with system dependent bandwidth.

Q: What are the TDP ratings for these two products?

A: The AMD Radeon RX 7900 GRE has a TDP of 260 W. The Intel Arc B390 has a TDP of 80 W.

Q: Which architecture does each product use?

A: The AMD Radeon RX 7900 GRE uses RDNA 3.0 architecture on a 5 nm TSMC process. The Intel Arc B390 uses Xe3-LPG architecture on a 3 nm Intel process.

Q: Do both products support the same graphics APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Specification Differences

The following specifications differ between the AMD Radeon RX 7900 GRE and the Intel Arc B390:

• Process node: 5 nm (TSMC) for AMD, 3 nm (Intel) for Intel
• Transistors: 57,700 million for AMD, unknown for Intel
• Die size: 529 mm² for AMD, unknown for Intel
• Transistor density: 109.1M / mm² for AMD, null for Intel
• Base clock: 1287 MHz for AMD, 300 MHz for Intel
• Boost clock: 2245 MHz for AMD, 2500 MHz for Intel
• Game clock: 1880 MHz for AMD, null for Intel
• Memory clock: 2250 MHz (18 Gbps effective) for AMD, system shared for Intel
• Memory size: 16 GB for AMD, system shared for Intel
• Memory type: GDDR6 for AMD, system shared for Intel
• Memory bus width: 256 bit for AMD, system shared for Intel
• Memory bandwidth: 576.0 GB/s for AMD, system dependent for Intel
• Shading units: 5120 for AMD, 1536 for Intel
• TMUs: 320 for AMD, 48 for Intel
• ROPs: 160 for AMD, 24 for Intel
• RT cores: 80 for AMD, 12 for Intel
• Pixel rate: 359.2 GPixel/s for AMD, 60.00 GPixel/s for Intel
• Texture rate: 718.4 GTexel/s for AMD, 120.0 GTexel/s for Intel
• FP32 performance: 45.98 TFLOPS for AMD, 7.680 TFLOPS for Intel
• FP16 performance: 91.96 TFLOPS for AMD, 15.36 TFLOPS for Intel
• TDP: 260 W for AMD, 80 W for Intel
• Slot width: Dual-slot for AMD, IGP for Intel
• Power connectors: 2x 8-pin for AMD, none for Intel
• Suggested PSU: 600 W for AMD, null for Intel
• Bus interface: PCIe 4.0 x16 for AMD, IGP for Intel
• Display outputs: 1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C for AMD, portable device dependent for Intel
• Dimensions: 276 mm length, 110 mm height, 51 mm width for AMD, null for Intel
• Release date: 2023-07-26 for AMD, 2026-01-26 for Intel
• Launch MSRP: 549 USD for AMD, null for Intel

The Verdict

The data in the database is unambiguous. The AMD Radeon RX 7900 GRE outperforms the Intel Arc B390 by 224.8% in the only shared benchmark, and its average benchmark score of 32456 is roughly 22 times higher than the Intel part's 1482. The AMD card ranks in the 77th percentile of all GPUs, while the Intel part ranks in the 9th percentile.

The RX 7900 GRE is a full-size discrete graphics card with 16 GB of dedicated GDDR6 memory, 5120 shading units, and 80 ray tracing cores. It is designed for high-end desktop gaming and workstation tasks, as evidenced by its 260 W TDP, dual-slot cooler, two 8-pin power connectors, and 600 W suggested PSU. Its launch MSRP is 549 USD. The Intel Arc B390 is an integrated graphics processor with system shared memory, 1536 shading units, and 12 ray tracing cores. It draws 80 W, requires no power connectors, and is intended for portable devices.

For a desktop PC builder seeking maximum graphics performance, the RX 7900 GRE is the clear choice based on every recorded metric. For a mobile or ultra-compact system where power draw and physical footprint matter more than raw throughput, the Arc B390's integrated design with no external power requirements is the only practical option. The two products do not compete in the same market segment, and the benchmark data confirms that the AMD part delivers roughly 3.25 times the 3DMark Steel Nomad score at the cost of significantly higher power consumption and physical size.