AMD Radeon RX 7400 OEM vs Intel Arc B770 Comparison

Where Each One Wins

The recorded data shows two very different design philosophies. The AMD Radeon RX 7400 OEM is built for efficiency and compact systems, while the Intel Arc B770 targets high-throughput rendering and large frame buffers. With no direct head-to-head benchmark entries in the database, the analysis relies on the architectural and specification differences between the two parts.

The AMD Radeon RX 7400 OEM wins decisively on power efficiency and physical footprint. Its 55 W TDP is dramatically lower than the 225 W TDP of the Intel Arc B770. The AMD card is single-slot and 167 mm long, whereas the Intel card requires a dual-slot design. The AMD card asks for a 250 W suggested PSU, while the Intel card demands 550 W. For small form factor builds or low-power OEM systems, the AMD part is the clear choice.

The Intel Arc B770 wins on raw compute throughput, memory capacity, and bandwidth. Its FP32 performance of 19.66 TFLOPS is roughly 2.5 times the 7.885 TFLOPS of the AMD card. The Intel card has 16 GB of GDDR6 memory on a 256-bit bus, delivering 512.0 GB/s bandwidth. The AMD card has 8 GB on a 128-bit bus with 172.8 GB/s. The Intel card also doubles the shading units (4096 vs 1792), texture mapping units (256 vs 112), and render output units (128 vs 64).

The use-case split is clear. The AMD Radeon RX 7400 OEM suits systems where power draw, heat output, and physical space are primary constraints. The Intel Arc B770 suits workloads that need large memory pools, high resolution textures, or heavy compute throughput. The AMD card's 28 ray tracing cores versus the Intel card's 32 ray tracing cores suggests the Intel part also holds a moderate advantage in ray-traced workloads, though the gap is smaller than in raster compute.

Architecture Differences

The two GPUs come from different architectural generations and design intents. The AMD Radeon RX 7400 OEM uses the Navi 33 chip built on RDNA 3.0 architecture, codenamed Hotpink Bonefish. It belongs to the Navi III (RX 7000) generation and is fabricated on a 6 nm process at TSMC. The chip contains 13,300 million transistors on a 204 mm² die, giving a transistor density of 65.2M per mm².

The Intel Arc B770 uses the BMG-G31 chip built on Xe2-HPG architecture. It belongs to the Battlemage (Arc 7) generation and is fabricated on a 5 nm process at TSMC. The die size is 368 mm², notably larger than the AMD chip. Transistor count is listed as unknown in the database, and no transistor density figure is recorded.

Clock behavior differs substantially. The AMD card has a very low base clock of 330 MHz with a boost of 1100 MHz. The Intel card has a base clock of 2100 MHz and a boost of 2400 MHz. This nearly 2.2x boost clock advantage for Intel explains part of the massive throughput difference. The AMD memory clock is 1350 MHz (10.8 Gbps effective), while the Intel memory clock is 2000 MHz (16 Gbps effective).

The FP16 compute ratio also differs. The AMD card delivers FP16 at 7.885 TFLOPS, a 1:1 ratio with FP32. The Intel card delivers FP16 at 39.32 TFLOPS, a 2:1 ratio relative to its FP32 figure. This means the Intel card has dedicated or doubled FP16 throughput, which can benefit AI inference or mixed-precision workloads. Neither card lists tensor cores in the database.

Both cards support the same API feature set: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both use PCIe 4.0, but the AMD card runs at x8 lanes while the Intel card runs at x16 lanes. The Intel card's wider bus interface provides double the host bandwidth, which matters for data-heavy workloads that stream geometry or textures from system memory.

The power connector requirements differ significantly. The AMD card uses a single 6-pin connector, while the Intel card requires both a 6-pin and an 8-pin connector. This reflects the 4x difference in TDP. The AMD card is single-slot and 167 mm long; the Intel card is dual-slot with no length recorded in the database.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries for these two GPUs, and neither card has recorded benchmark scores or nearest rival data. The winsA and winsB fields are both zero. The percentileVsAllGpus field is 50 for both cards, placing them at the median of all GPUs in the database, though this is a default value given the absence of actual benchmark data.

Without measured benchmark results, the strongest comparisons come from the specifications. The Intel Arc B770 delivers 19.66 TFLOPS FP32, which is 149% higher than the AMD card's 7.885 TFLOPS. In pixel rate, the Intel card achieves 307.2 GPixel/s versus 70.40 GPixel/s for the AMD card, a 4.4x advantage. Texture rate shows a similar gap: 614.4 GTexel/s versus 123.2 GTexel/s.

Memory bandwidth is one of the largest differentiators. The Intel card's 512.0 GB/s is nearly three times the AMD card's 172.8 GB/s. Combined with 16 GB versus 8 GB capacity, the Intel card can feed its wider 256-bit bus with more data per clock. The AMD card's 128-bit bus limits its bandwidth ceiling regardless of clock speed.

The AMD card's boost clock of 1100 MHz is less than half of the Intel card's 2400 MHz boost. The AMD card compensates with a much lower TDP of 55 W, achieving its 7.885 TFLOPS at a fraction of the Intel card's 225 W power draw. Per watt, the AMD card delivers roughly 0.143 TFLOPS/W, while the Intel card delivers roughly 0.087 TFLOPS/W. This efficiency advantage is the AMD card's strongest measured attribute.

The Intel card's 32 ray tracing cores versus the AMD card's 28 represent a 14% advantage in ray tracing hardware. The FP16 ratio difference (2:1 for Intel, 1:1 for AMD) means the Intel card has 39.32 TFLOPS FP16, exactly five times the AMD card's 7.885 TFLOPS FP16. For any workload that can use FP16 math, the Intel card's advantage grows beyond the FP32 gap.

The Verdict

The data supports a straightforward conclusion. The Intel Arc B770 is the higher-performance card in nearly every compute metric. Its FP32 throughput is 2.5x higher, its memory bandwidth is 3x higher, its pixel rate is 4.4x higher, and its texture rate is 5x higher. The 16 GB memory capacity doubles the AMD card's 8 GB, and the 256-bit bus doubles the 128-bit bus width.

The AMD Radeon RX 7400 OEM is the efficiency pick. Its 55 W TDP is less than one quarter of the Intel card's 225 W TDP. The single-slot, 167 mm design fits in cases where the dual-slot Intel card will not. The 250 W suggested PSU is less than half of the 550 W suggested for the Intel card. The 6-pin connector is simpler than the 6-pin plus 8-pin requirement of the Intel card.

For users building a compact OEM system, a low-power media center, or a secondary GPU for specific tasks, the AMD Radeon RX 7400 OEM provides adequate performance with minimal power and space demands. For users prioritizing raw rendering performance, large texture pools, or compute throughput, the Intel Arc B770 is the stronger choice by a wide margin.

The lack of direct benchmark data means these conclusions come entirely from specification analysis. The percentile ranking of 50 for both cards suggests they occupy a similar tier in the overall GPU landscape, but the actual performance gap between them is substantial based on the recorded specifications.

FAQ

Q: Which card has higher FP32 performance?

A: The Intel Arc B770 delivers 19.66 TFLOPS FP32, which is 149% higher than the AMD Radeon RX 7400 OEM's 7.885 TFLOPS.

Q: How much memory does each card have?

A: The AMD Radeon RX 7400 OEM has 8 GB of GDDR6 memory on a 128-bit bus. The Intel Arc B770 has 16 GB of GDDR6 memory on a 256-bit bus.

Q: What is the power consumption difference?

A: The AMD Radeon RX 7400 OEM has a 55 W TDP, while the Intel Arc B770 has a 225 W TDP. The AMD card requires a 250 W suggested PSU, and the Intel card requires a 550 W suggested PSU.

Q: Do both cards support the same APIs?

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

Q: What is the memory bandwidth of each card?

A: The AMD Radeon RX 7400 OEM provides 172.8 GB/s, while the Intel Arc B770 provides 512.0 GB/s, nearly three times higher.

Q: How does the FP16 performance compare?

A: The AMD card offers 7.885 TFLOPS FP16 at a 1:1 ratio with FP32. The Intel card offers 39.32 TFLOPS FP16 at a 2:1 ratio, giving it five times the FP16 throughput.

Specification Differences

| Specification | AMD Radeon RX 7400 OEM | Intel Arc B770 |

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

| Chip | Navi 33 | BMG-G31 |

| Architecture | RDNA 3.0 | Xe2-HPG |

| Process Node | 6 nm | 5 nm |

| Die Size | 204 mm² | 368 mm² |

| Transistors | 13,300 million | unknown |

| Base Clock | 330 MHz | 2100 MHz |

| Boost Clock | 1100 MHz | 2400 MHz |

| Memory Size | 8 GB | 16 GB |

| Memory Bus | 128 bit | 256 bit |

| Memory Bandwidth | 172.8 GB/s | 512.0 GB/s |

| Shading Units | 1792 | 4096 |

| TMUs | 112 | 256 |

| ROPs | 64 | 128 |

| Ray Tracing Cores | 28 | 32 |

| FP32 | 7.885 TFLOPS | 19.66 TFLOPS |

| FP16 | 7.885 TFLOPS (1:1) | 39.32 TFLOPS (2:1) |

| TDP | 55 W | 225 W |

| Slot Width | Single-slot | Dual-slot |

| Power Connectors | 1x 6-pin | 1x 6-pin + 1x 8-pin |

| Suggested PSU | 250 W | 550 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |

| Length | 167 mm | not recorded |

| Release Date | 2025-08-07 | 2025-12-31 |