AMD Radeon RX 7900 GRE vs Intel Arc Pro B390 Comparison

Head-to-Head Benchmarks

The benchmark database contains no direct head-to-head test results for these two parts, and the Intel Arc Pro B390 has no recorded benchmark scores of its own. The AMD Radeon RX 7900 GRE, by contrast, has a full suite of ten benchmark results across DirectX 9, 10, 11, 12, OpenCL, Vulkan, and general-purpose compute workloads.

The RX 7900 GRE posts an average benchmark score of 32,456 across all recorded tests, placing it in the 77th percentile of all GPUs in the database. Its closest recorded rivals include the AMD FirePro S10000 (average score 32,388, a 0.2% difference), the AMD FirePro S9300 X2 (average score 32,540, a 0.3% gap), and the AMD Radeon RX 590 GME (average score 32,601, a 0.4% gap). These deltas are tiny, meaning the RX 7900 GRE sits in a tightly packed performance cluster in aggregate terms.

Looking at individual workloads, the RX 7900 GRE delivers its strongest showing in 3DMark Steel Nomad DX12 with a score of 4,814. In Geekbench OpenCL it reaches 175,758, and in Geekbench Vulkan it scores 99,850. Passmark G3D shows 27,089, while Passmark GPU Compute posts 15,016. Legacy DirectX results are far lower: Passmark DirectX 11 scores 300, DirectX 9 scores 310, DirectX 10 scores 139, and DirectX 12 scores 107. The Passmark G2D result is 1,180.

Since the Arc Pro B390 has zero recorded benchmarks and an average score of 0, the database provides no quantitative basis for direct comparison. The RX 7900 GRE is simply the only part in this pairing with measurable performance data. Its 77th percentile ranking confirms it sits above the median GPU in the database, while the Arc Pro B390's 50th percentile reflects its lack of recorded results rather than a measured performance level.

Architecture Differences

The two GPUs come from entirely different architectural lineages and manufacturing ecosystems. 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 (RX 7000) generation. The Intel Arc Pro B390 uses the Panther Lake chip built on Xe3-LPG architecture, part of the Arc Graphics-WM (Panther Lake) generation.

Manufacturing details diverge sharply. The RX 7900 GRE is fabricated by TSMC on a 5 nm process, with 57,700 million transistors on a 529 mm² die, yielding a transistor density of 109.1M per mm². The Arc Pro B390 is fabricated by Intel on a 3 nm process, but its transistor count, die size, and transistor density are all listed as unknown in the database.

Compute resources differ by an order of magnitude. The RX 7900 GRE carries 5,120 shading units, 320 texture mapping units, 160 raster operation units, and 80 ray tracing cores. The Arc Pro B390 has 1,536 shading units, 48 texture mapping units, 24 raster operation units, and 12 ray tracing cores. Neither part has dedicated tensor cores.

Clock behavior also separates them. The RX 7900 GRE runs at a 1,287 MHz base clock, a 1,880 MHz game clock, and a 2,245 MHz boost clock. The Arc Pro B390 has a much lower 300 MHz base clock but a higher 2,500 MHz boost clock, with no game clock listed. Memory configurations are fundamentally different: the RX 7900 GRE uses 16 GB of GDDR6 on a 256-bit bus with 576.0 GB/s of bandwidth and an 18 Gbps effective memory speed. The Arc Pro B390 uses system shared memory, with system shared type, system shared bus width, and system dependent bandwidth.

Rasterization and compute throughput reflect these resource gaps. The RX 7900 GRE achieves 359.2 GPixel/s pixel rate, 718.4 GTexel/s texture rate, 45.98 TFLOPS FP32, and 91.96 TFLOPS FP16 (2:1). The Arc Pro B390 delivers 60.00 GPixel/s, 120.0 GTexel/s, 7.680 TFLOPS FP32, and 15.36 TFLOPS FP16 (2:1). Power draw tells a similar story: the RX 7900 GRE is rated at 260 W TDP with dual-slot cooling and 2x 8-pin power connectors, while the Arc Pro B390 is an 80 W IGP with no power connectors and no suggested PSU rating.

Both parts support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7900 GRE uses a PCIe 4.0 x16 bus interface and offers 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C outputs. The Arc Pro B390 uses an IGP bus interface with display outputs described as portable device dependent.

Where Each One Wins

From the recorded data, the RX 7900 GRE wins every measurable category. It has a substantial lead in raw compute, delivering 45.98 TFLOPS FP32 versus 7.680 TFLOPS for the Arc Pro B390, a factor of six in theoretical throughput. Texture rate shows a similar ratio: 718.4 GTexel/s versus 120.0 GTexel/s. Pixel rate favors the RX 7900 GRE at 359.2 GPixel/s versus 60.00 GPixel/s.

Memory bandwidth is where the gap becomes extreme. The RX 7900 GRE's dedicated 576.0 GB/s GDDR6 subsystem dwarfs the Arc Pro B390's system shared memory, which has system dependent bandwidth. For workloads that saturate memory, such as high-resolution textures or large compute buffers, the RX 7900 GRE has a structural advantage that cannot be offset by the Arc Pro B390's higher boost clock.

The Arc Pro B390 does win on power efficiency from a raw specification standpoint. Its 80 W TDP is dramatically lower than the RX 7900 GRE's 260 W TDP, and it requires no external power connectors and no separate PSU rating. It also uses a newer 3 nm process from Intel versus the 5 nm TSMC node on the RX 7900 GRE, and it boasts a higher boost clock of 2,500 MHz versus 2,245 MHz. These are meaningful design wins for compact or power-constrained systems, though the database contains no efficiency benchmarks to quantify the real-world impact.

The RX 7900 GRE also wins on release timing, having launched in the third quarter of 2023, while the Arc Pro B390 carries a release date in early 2026. The RX 7900 GRE has a defined predecessor (Navi II) and successor (Navi IV), while the Arc Pro B390 lists HD Graphics-WM as its predecessor and no successor.

The Verdict

The recorded data supports a clear conclusion: the AMD Radeon RX 7900 GRE is the superior performer in every measured and specified category that affects graphics throughput. It delivers roughly six times the FP32 compute, six times the texture rate, and nearly six times the pixel rate of the Intel Arc Pro B390. It has dedicated 16 GB of GDDR6 memory with 576.0 GB/s of bandwidth versus system shared memory with system dependent bandwidth. Its 80 ray tracing cores versus 12 further widen the gap in ray-traced workloads.

The Arc Pro B390's advantages are limited to power consumption, process node, and form factor. At 80 W with no power connectors and IGP integration, it targets systems where a discrete GPU is impossible. The RX 7900 GRE at 260 W with dual-slot cooling and 2x 8-pin connectors requires a 600 W PSU and a PCIe 4.0 x16 slot.

For a builder assembling a desktop with a dedicated PCIe slot and a PSU rated for a high-end GPU, the RX 7900 GRE is the only viable choice based on the data. Its 77th percentile ranking and average benchmark score of 32,456 place it in a competitive position among all recorded GPUs. The Arc Pro B390's 50th percentile rank and zero recorded benchmarks offer no performance evidence to counter this.

For a system that cannot accommodate a discrete GPU, such as an ultra-compact or integrated design, the Arc Pro B390 is the only option in this pairing. Its 3 nm process and 80 W TDP make it suitable for low-power platforms, and its 12 ray tracing cores plus DirectX 12 Ultimate support provide modern API coverage. But the database contains no benchmark results to validate its real-world performance.

FAQ

Q: Which GPU has higher raw compute throughput?

A: The AMD Radeon RX 7900 GRE delivers 45.98 TFLOPS FP32, while the Intel Arc Pro B390 delivers 7.680 TFLOPS FP32. The RX 7900 GRE is roughly six times higher in this metric.

Q: What memory configurations do the two GPUs use?

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

Q: Which GPU has more ray tracing cores?

A: The RX 7900 GRE has 80 ray tracing cores. The Arc Pro B390 has 12 ray tracing cores.

Q: What are the power requirements for each GPU?

A: The RX 7900 GRE has a 260 W TDP, uses dual-slot cooling, requires 2x 8-pin power connectors, and needs a 600 W suggested PSU. The Arc Pro B390 has an 80 W TDP, uses IGP form factor, requires no power connectors, and has no suggested PSU rating.

Q: Do both GPUs support the same graphics APIs?

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

Q: Which GPU has a higher boost clock?

A: The Arc Pro B390 boosts to 2,500 MHz, while the RX 7900 GRE boosts to 2,245 MHz. However, the RX 7900 GRE also has a game clock of 1,880 MHz and a base clock of 1,287 MHz, while the Arc Pro B390 has only a 300 MHz base clock.

Specification Differences

| Specification | AMD Radeon RX 7900 GRE | Intel Arc Pro B390 |

|---|---|---|

| Architecture | RDNA 3.0 | Xe3-LPG |

| Chip | Navi 31 | Panther Lake |

| Process Node | 5 nm (TSMC) | 3 nm (Intel) |

| Transistors | 57,700 million | unknown |

| Die Size | 529 mm² | unknown |

| Base Clock | 1287 MHz | 300 MHz |

| Boost Clock | 2245 MHz | 2500 MHz |

| Game Clock | 1880 MHz | None |

| Memory Size | 16 GB GDDR6 | System Shared |

| Memory Bus | 256 bit | System Shared |

| Memory Bandwidth | 576.0 GB/s | System Dependent |

| Shading Units | 5120 | 1536 |

| TMUs | 320 | 48 |

| ROPs | 160 | 24 |

| Ray Tracing Cores | 80 | 12 |

| Pixel Rate | 359.2 GPixel/s | 60.00 GPixel/s |

| Texture Rate | 718.4 GTexel/s | 120.0 GTexel/s |

| FP32 Performance | 45.98 TFLOPS | 7.680 TFLOPS |

| FP16 Performance | 91.96 TFLOPS (2:1) | 15.36 TFLOPS (2:1) |

| TDP | 260 W | 80 W |

| Slot Width | Dual-slot | IGP |

| Power Connectors | 2x 8-pin | None |

| Suggested PSU | 600 W | None |

| Bus Interface | PCIe 4.0 x16 | IGP |

| Release Date | 2023-07-26 | 2026-01-26 |

| Launch MSRP | 549 USD | None |

| Production Status | Active | Active |