AMD Radeon RX 7800M vs Intel Arc A370M Comparison

Intel Arc A370M and AMD Radeon RX 7800M occupy entirely different tiers of the mobile graphics spectrum, and the benchmark data reflects a decisive performance gap. The A370M, an entry-level Alchemist part, is positioned against the RX 7800M, a high-end Navi 32 mobile GPU. Across the two shared benchmark tests, the AMD part wins outright, with margins that suggest a generational and architectural chasm rather than a close contest.

Head-to-Head Benchmarks

The head-to-head comparison is brief but unambiguous. In Geekbench OpenCL, the RX 7800M scores 120,778, while the Arc A370M scores 29,676. The deltaPct of -75.4% for the Intel part means it trails by roughly three-quarters of the AMD's score. In Geekbench Vulkan, the gap widens slightly in percentage terms: the RX 7800M posts 126,668 versus the A370M's 28,673, a deltaPct of -77.4%. That is a massive deficit for the Intel GPU.

To contextualize these numbers, the average benchmark score for the A370M is 29,175, placing it in the 74th percentile of all GPUs. The RX 7800M, despite its far higher raw scores, has an average benchmark score of 27,883 and a 73rd percentile standing. This seems paradoxical until you consider the nature of the benchmark sets. The RX 7800M's average is dragged down by a series of Passmark scores that are oddly low for a modern high-end part, while the A370M only has two Geekbench results in its dataset. The data implies that the RX 7800M's average is not representative of its peak capability, whereas the A370M's average is derived solely from its strongest tests.

Looking at rival deltas, the A370M sits within 1% of several AMD workstation and mobile parts—the RX Vega M GH (29197, deltaPct -0.1%), FirePro W8000 (29211, deltaPct -0.1%), and RX 6800M (28874, deltaPct 1%). The RX 7800M, conversely, is bracketed by AMD Pro cards and a high-end NVIDIA desktop GPU from a previous generation. The RX 7800M scores within 0.8% of the GTX 980 Ti, which is a notable data point for a mobile chip released years later. The data shows that the RX 7800M's raw compute is in a different league, but its average score is suppressed by inconsistent Passmark results.

Architecture Differences

The architectural divide is stark. The Arc A370M uses the DG2-128 chip based on Xe-HPG architecture, fabricated on a 6 nm process at TSMC. It packs 7,200 million transistors on a 157 mm² die, yielding a transistor density of 45.9 million per square millimeter. The RX 7800M uses the Navi 32 chip with RDNA 3.0 architecture, on a more advanced 5 nm TSMC process. It contains 28,100 million transistors on a 346 mm² die, achieving 81.2 million transistors per square millimeter—nearly double the density of the Intel part.

Core configurations diverge massively. The A370M has 1,024 shading units, 64 texture mapping units, and 32 ROPs, alongside 8 ray tracing cores. The RX 7800M has 3,840 shading units, 240 TMUs, and 96 ROPs, with 60 ray tracing cores. That is 3.75x the shading units, 3.75x the TMUs, and 3x the ROPs. The RX 7800M also doubles the FP16 throughput ratio: it achieves 35.87 TFLOPS for both FP32 and FP16 (1:1 ratio), whereas the A370M offers 4.198 TFLOPS FP32 and 8.397 TFLOPS FP16 (2:1 ratio). The AMD's FP32 compute is roughly 8.5x higher than Intel's.

The memory subsystems are equally divergent. The A370M uses 4 GB of GDDR6 on a 64-bit bus, delivering 112.0 GB/s bandwidth. The RX 7800M uses 12 GB of GDDR6 on a 192-bit bus, delivering 432.0 GB/s—3.86x the bandwidth. The RX 7800M also has a higher memory clock (2250 MHz, 18 Gbps effective) compared to the A370M's 1750 MHz (14 Gbps effective). Both support PCIe 4.0, but the Intel card uses x8 lanes while the AMD uses x16. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Where Each One Wins

The data shows the RX 7800M wins every head-to-head benchmark, so the "where" question is about the nature of its dominance. In synthetic compute workloads like Geekbench OpenCL and Vulkan, the AMD part is the clear victor. The RX 7800M's raw shading unit count and FP32 throughput suggest it is designed for high-resolution gaming and compute-heavy tasks. Its 12 GB frame buffer and 432 GB/s bandwidth indicate it can handle large textures and data sets without bottlenecking.

The A370M, while losing decisively, still has a place. Its 35 W TDP versus the RX 7800M's 180 W TDP means it is suited for thin-and-light laptops where power draw is critical. The Intel part's 74th percentile ranking, despite its low absolute scores, suggests it punches above its weight in its class. For esports titles or older games at lower settings, the A370M's 4.198 TFLOPS is sufficient. The RX 7800M, with 35.87 TFLOPS, is overkill for such workloads but excels in demanding AAA titles, ray tracing, and content creation.

The Passmark data for the RX 7800M is curious: it scores 17,613 in G3D and 9,342 in GPU compute, but only 99 in DirectX 10, 176 in DirectX 11, 89 in DirectX 12, and 174 in DirectX 9. These low DirectX scores are inconsistent with its Geekbench performance, suggesting driver overhead or benchmark configuration issues. The A370M has no Passmark scores, so a direct comparison there is impossible. The data implies the RX 7800M's real-world gaming performance is likely far better than its Passmark DirectX scores suggest.

Specification Differences

The two GPUs differ across nearly every specification field. Process node: 6 nm (Intel) versus 5 nm (AMD). Transistors: 7,200 million versus 28,100 million. Die size: 157 mm² versus 346 mm². Transistor density: 45.9M/mm² versus 81.2M/mm². Base clock: 1550 MHz versus 1295 MHz. Boost clock: 2050 MHz versus 2335 MHz. The AMD has a game clock of 2145 MHz; the Intel has none listed. Memory size: 4 GB versus 12 GB. Memory bus: 64-bit versus 192-bit. Bandwidth: 112.0 GB/s versus 432.0 GB/s. Shading units: 1,024 versus 3,840. TMUs: 64 versus 240. ROPs: 32 versus 96. RT cores: 8 versus 60. Pixel rate: 65.60 GPixel/s versus 224.2 GPixel/s. Texture rate: 131.2 GTexel/s versus 560.4 GTexel/s. FP32: 4.198 TFLOPS versus 35.87 TFLOPS. FP16: 8.397 TFLOPS (2:1) versus 35.87 TFLOPS (1:1). TDP: 35 W versus 180 W. Bus interface: PCIe 4.0 x8 versus x16. Release date: 2022-03-29 versus 2024-09-10. Production status: End-of-life versus Active. The Intel part has no power connectors listed; the AMD lists "None" (likely meaning it draws from the motherboard via proprietary connectors). Both are IGP slot width and have portable-device-dependent display outputs. The AMD has a predecessor (Polaris Mobile) and is part of the Radeon RX 7000 series, while the Intel has no series, predecessor, or successor listed.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The Intel Arc A370M has a higher average benchmark score of 29,175, compared to the AMD Radeon RX 7800M's 27,883. However, this is misleading because the A370M only has two Geekbench scores, while the RX 7800M's average includes several low Passmark DirectX scores that drag it down.

Q: How much faster is the RX 7800M in Geekbench Vulkan?

A: The RX 7800M scores 126,668 versus the A370M's 28,673, a deltaPct of -77.4% for the Intel part. This means the AMD GPU is roughly 4.4x faster in that specific test.

Q: What is the memory bandwidth difference?

A: The RX 7800M has 432.0 GB/s bandwidth on a 192-bit bus, while the A370M has 112.0 GB/s on a 64-bit bus. The AMD part provides approximately 3.86x more bandwidth.

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. There is no difference in API feature support listed in the data.

Q: Which GPU has a higher boost clock?

A: The AMD Radeon RX 7800M has a boost clock of 2335 MHz, which is higher than the Intel Arc A370M's 2050 MHz. The Intel part has a higher base clock (1550 MHz versus 1295 MHz).

Q: How do the transistor counts compare?

A: The RX 7800M contains 28,100 million transistors, while the A370M contains 7,200 million. The AMD chip has nearly four times the transistor count, consistent with its larger die size of 346 mm² versus 157 mm².

The Verdict

The data is unambiguous: the AMD Radeon RX 7800M is the superior performer by a colossal margin in every shared benchmark. Its 3.75x shading units, 8.5x FP32 throughput, and 3.86x memory bandwidth translate directly into the observed 75-77% score deficits for the Intel part. Anyone seeking high-end mobile gaming or compute performance should choose the RX 7800M, provided their laptop chassis can handle its 180 W TDP.

The Intel Arc A370M, however, is not without rationale. Its 35 W TDP is a fraction of the AMD's power draw, making it the only viable option for ultraportable designs. Its 74th percentile ranking, despite low absolute scores, indicates it outperforms many similarly positioned GPUs. The A370M is end-of-life and was released in March 2022, while the RX 7800M is active and released in September 2024. For users prioritizing battery life and mobility over raw performance, the A370M remains a competent entry-level choice. For everyone else, the RX 7800M's benchmark results make it the clear pick—its low Passmark DirectX scores are an outlier that should not obscure its dominant Geekbench performance.