AMD Radeon RX 7900 XTX vs Intel Arc A770M Comparison

The AMD Radeon RX 7900 XTX is the definitive performance leader in this comparison, winning 9 of 10 head-to-head benchmarks, but the Intel Arc A770M is not without its own unique strengths. The most striking result is the Intel part winning Geekbench OpenCL by a substantial margin, a clear outlier against the AMD card's dominance in every other test. The data shows a desktop flagship designed for raw throughput facing a mobile part that excels in a specific compute workload, making the choice between them heavily dependent on the intended use case.

Head-to-Head Benchmarks

The AMD Radeon RX 7900 XTX delivers crushing victories in the vast majority of tests. In the modern DirectX 12 workload of 3DMark Steel Nomad, the AMD card scores 6841 against Intel's 2278, a 200.3% advantage. This pattern repeats across the Passmark suite, with the most extreme gap appearing in DirectX 11 where AMD's 356 score is 415.9% higher than Intel's 69. Even in older APIs, the lead is decisive: DirectX 10 shows a 196.4% delta, DirectX 9 an 85.4% delta, and DirectX 12 an 87.1% delta. The compute-focused Passmark GPU Compute test reinforces the theme, with AMD scoring 17689 versus Intel's 4778, a 270.2% difference.

The only exception to AMD's sweep is Geekbench OpenCL, where the Intel Arc A770M scores 89494 against AMD's 50465. That is a 43.6% advantage for Intel, a remarkable result given its performance elsewhere. It suggests a specific architectural efficiency in a particular compute scenario that does not translate to other benchmarks. In contrast, the Geekbench Vulkan test goes to AMD, with a score of 85612 versus Intel's 74422, a 15% lead. The 2D graphics test also favors AMD, 1267 to 711, a 78.2% delta.

Looking at the aggregate picture, AMD's average benchmark score is 19410, while Intel's is 18383. Interestingly, the nearest rivals for AMD include the NVIDIA GeForce GTX 1060 3 GB (deltaPct 0.4) and the NVIDIA TITAN Xp (deltaPct 1.2), while Intel's closest competitors are the AMD Radeon RX 460 (deltaPct 0.1) and the NVIDIA GeForce RTX 3060 Mobile (deltaPct 1.2). This places the two cards in different performance tiers despite their proximity in average score, driven by Intel's single high OpenCL result.

Architecture Differences

The two GPUs are built on different architectures and process nodes. The AMD Radeon RX 7900 XTX uses the RDNA 3.0 architecture with the Navi 31 chip, manufactured on a 5 nm process at TSMC. The Intel Arc A770M uses the Xe-HPG architecture with the DG2-512 chip, built on a 6 nm process, also at TSMC. This node difference is reflected in transistor density: AMD packs 109.1M transistors per mm² across a 529 mm² die for a total of 57,700 million transistors, while Intel has 53.4M transistors per mm² on a 406 mm² die, totaling 21,700 million.

The compute resources differ significantly. AMD fields 6144 shading units, 384 texture mapping units, and 192 ROPs, alongside 96 ray tracing cores. Intel counters with 4096 shading units, 256 TMUs, and 128 ROPs, plus 32 ray tracing cores. This hardware disparity explains the raw performance gap in most tests. Clock speeds also favor AMD, with a base clock of 1929 MHz and a boost of 2498 MHz, compared to Intel's 1650 MHz base and 2050 MHz boost. The AMD card also has a defined game clock of 2365 MHz, a feature Intel does not list.

Memory architecture is another major separator. The AMD card uses 24 GB of GDDR6 on a 384-bit bus, yielding 960.0 GB/s of bandwidth. The Intel part has 16 GB of GDDR6 on a 256-bit bus, providing 512.0 GB/s. The effective memory speed is 20 Gbps for AMD and 16 Gbps for Intel. These differences in capacity and bandwidth contribute directly to the performance deltas in memory-intensive benchmarks.

Where Each One Wins

The AMD Radeon RX 7900 XTX is the clear winner for gaming and traditional graphics workloads. Its victories across DirectX 9, 10, 11, and 12, plus Vulkan and 3DMark Steel Nomad, show it handles both legacy and modern APIs with superior performance. The 165.3% lead in Passmark G3D and the 200.3% lead in 3DMark Steel Nomad indicate that it is the stronger choice for demanding 3D applications. The 270.2% advantage in GPU compute further suggests it is better suited for general-purpose compute tasks that leverage standard graphics pipelines.

The Intel Arc A770M wins solely in Geekbench OpenCL. This single result indicates a specific strength in OpenCL compute workloads that do not appear in other benchmarks. The 43.6% margin over AMD in this test is significant, but it is an isolated win. For any user prioritizing OpenCL performance specifically, the Intel card has a measurable edge. Outside of that niche, the data consistently points to AMD.

For 2D tasks, AMD also leads with a 78.2% advantage in Passmark G2D. This suggests better performance in desktop rendering and 2D acceleration. The Intel card's lower scores across the board, except for OpenCL, position it as a part that may excel in specialized compute environments but falls short in general graphics.

Specification Differences

The core specification differences are stark. The AMD card has a higher pixel rate at 479.6 GPixel/s versus Intel's 262.4 GPixel/s, and a texture rate of 959.2 GTexel/s versus 524.8 GTexel/s. Floating point performance shows AMD at 61.39 TFLOPS FP32 and 122.8 TFLOPS FP16 (2:1), while Intel manages 16.79 TFLOPS FP32 and 33.59 TFLOPS FP16 (2:1). Power consumption differs drastically, with AMD rated at 355 W TDP and Intel at 120 W TDP. AMD requires a 2x 8-pin power connector and a 750 W suggested PSU, while Intel lists no power connectors or PSU suggestion, as it is an IGP (integrated graphics processor) for mobile devices.

The physical form factors are entirely different. AMD is a dual-slot card measuring 287 mm in length, 110 mm in height, and 51 mm in width. Intel is an IGP with no listed dimensions, designed for portable devices. Display outputs also differ: AMD offers 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C, while Intel's outputs are described as "Portable Device Dependent." Both use a PCIe 4.0 x16 bus interface. The AMD card has a launch MSRP of 999 USD, while Intel has no listed launch MSRP. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon RX 7900 XTX has an average benchmark score of 19410, while the Intel Arc A770M has 18383.

Q: What is the biggest performance gap between the two cards?

A: The largest delta is in Passmark DirectX 11, where AMD scores 356 against Intel's 69, a 415.9% advantage.

Q: In which test does the Intel Arc A770M outperform the AMD Radeon RX 7900 XTX?

A: The Intel Arc A770M wins Geekbench OpenCL with a score of 89494 versus AMD's 50465, a 43.6% advantage.

Q: How do the memory bandwidths compare?

A: The AMD card has 960.0 GB/s of bandwidth from 24 GB of GDDR6 on a 384-bit bus, while Intel has 512.0 GB/s from 16 GB of GDDR6 on a 256-bit bus.

Q: What are the process nodes for each GPU?

A: The AMD Radeon RX 7900 XTX is built on a 5 nm process, and the Intel Arc A770M is built on a 6 nm process, both at TSMC.

Q: What is the TDP of each card?

A: The AMD Radeon RX 7900 XTX has a 355 W TDP, while the Intel Arc A770M has a 120 W TDP.

The Verdict

The AMD Radeon RX 7900 XTX is the superior graphics card for nearly every task. Its 9-1 win record in head-to-head benchmarks is decisive, with leads exceeding 200% in several tests. The data shows it is the clear choice for gaming across all DirectX versions, Vulkan, and modern 3DMark workloads. Its 165.3% lead in Passmark G3D and 270.2% lead in GPU compute make it the better option for both general 3D rendering and compute tasks. The 24 GB memory capacity and 960.0 GB/s bandwidth provide a substantial advantage over Intel's 16 GB and 512.0 GB/s.

The Intel Arc A770M is not without merit, but its appeal is narrow. The single Geekbench OpenCL win indicates a specialized strength that could be valuable for users with specific OpenCL compute requirements. Its lower 120 W TDP also suggests it is designed for mobile or power-constrained environments, unlike the desktop-oriented AMD card. For a user who needs maximum OpenCL performance in a portable form factor, the Intel part has a case. For anyone else, the AMD Radeon RX 7900 XTX is the overwhelmingly better performer, as evidenced by its higher average score, higher percentile ranking (64 vs 62), and dominance in almost every test. The choice is clear: prioritize AMD for comprehensive performance, or choose Intel only if the singular OpenCL advantage is the primary requirement.