AMD Radeon HD 8970M vs Intel Arc A770M Comparison

AMD Radeon HD 8970M vs Intel Arc A770M: two mobile GPUs separated by nearly a decade of silicon evolution. The database results are unambiguous: the Arc A770M dominates the shared OpenCL benchmark, but the HD 8970M holds its own as a historical data point. This analysis breaks down the recorded scores, architectural gaps, and practical takeaways for anyone comparing these parts.

Head-to-Head Benchmarks

The only directly comparable benchmark in the database is Geekbench OpenCL. Here, the Intel Arc A770M scores 89,494, while the AMD Radeon HD 8970M scores 21,237. That is a delta of -76.3% for the AMD part, meaning the Arc A770M delivers roughly 4.2 times the raw compute throughput in this test. The margin is enormous and reflects the generational leap in shader count, clock speeds, and memory bandwidth.

Context from the nearest rivals reinforces how each card sits in its own era. The HD 8970M’s 21,237 OpenCL score places it within 0.4% of the AMD Radeon RX Vega M GL (21,153) and 1% ahead of the NVIDIA GeForce RTX 5050 (21,035). It trails the NVIDIA RTX A4000 Mobile (21,379) by 0.7% and the NVIDIA Quadro RTX 5000 (21,629) by 1.8%. So despite its age, the HD 8970M clusters tightly with much newer mid-range parts in this single compute test, a sign that its 1280 shading units were well ahead of their time.

The Arc A770M’s average benchmark score across all recorded tests is 18,383, which puts it in a different neighborhood: within 0.1% of the AMD Radeon RX 460 (18,373), 1.1% ahead of the AMD Radeon Pro 5700 (18,189), and 1.2% ahead of the NVIDIA GeForce RTX 3060 Mobile (18,159). It trails the AMD FirePro D500 (18,533) by 0.8%. However, the Geekbench OpenCL score of 89,494 is the outlier that pulls the average down when mixed with other tests like PassMark DirectX 9 (178) or PassMark G2D (711). That spread shows the Arc’s strengths are not uniform across all workloads.

Where Each One Wins

The Arc A770M wins the only head-to-head benchmark, and it wins decisively. In OpenCL compute, the 89,494 score versus 21,237 is a 76.3% advantage. This makes the Intel part the clear choice for any task that leverages general-purpose GPU compute, such as OpenCL-based rendering, physics simulation, or data-parallel workloads. Its 16.79 TFLOPS FP32 and 33.59 TFLOPS FP16 (2:1) figures dwarf the HD 8970M’s 2.304 TFLOPS FP32, so the compute gap is structural, not just a clock-speed artifact.

The HD 8970M does not win any recorded benchmark head-to-head. However, its percentile ranking tells a different story: it sits at the 66th percentile among all GPUs in the database, versus the Arc A770M’s 62nd percentile. That means the older AMD card outperforms a larger share of the overall GPU population, even though it loses the direct comparison. The HD 8970M’s 28.80 GPixel/s pixel rate and 72.00 GTexel/s texture rate are modest by modern standards, but they were competitive for a 2013 flagship mobile part. The Arc’s 262.4 GPixel/s and 524.8 GTexel/s are 9.1x and 7.3x higher respectively, so in rasterization-heavy scenarios the Intel part is overwhelmingly faster.

For legacy DirectX 9 or 10 workloads, the database shows the Arc A770M scoring 178 in PassMark DirectX 9, 56 in DirectX 10, and 69 in DirectX 11. These are low absolute numbers, but they are the only DirectX scores recorded for the Intel part. The HD 8970M has no equivalent entries, so any comparison there is qualitative: the GCN 1.0 architecture supports DirectX 12 (11_1), while the Arc supports DirectX 12 Ultimate (12_2), meaning the Intel card is better equipped for modern API features like ray tracing.

Architecture Differences

The HD 8970M uses GCN 1.0, AMD’s first-generation Graphics Core Next architecture, built on the Neptune chip. It is a 28 nm design from TSMC with 2,800 million transistors on a 212 mm² die, giving a transistor density of 13.2 million per mm². The Arc A770M uses Intel’s Xe-HPG architecture, implemented on the DG2-512 chip, fabricated on a 6 nm TSMC process. It packs 21,700 million transistors into a 406 mm² die, for a density of 53.4 million per mm². That is a 4x improvement in transistor density, which explains how Intel fits 4096 shading units, 256 TMUs, and 128 ROPs into a mobile part.

The memory subsystems are also generations apart. The HD 8970M uses 4 GB of GDDR5 on a 256-bit bus, with memory clocked at 1200 MHz (4.8 Gbps effective) and bandwidth of 153.6 GB/s. The Arc A770M uses 16 GB of GDDR6 on the same 256-bit bus, but at 2000 MHz (16 Gbps effective), yielding 512.0 GB/s of bandwidth. That is a 3.3x bandwidth increase, which directly impacts texture-heavy and high-resolution workloads.

Feature support differs sharply. The HD 8970M has no ray tracing cores, while the Arc A770M has 32 RT cores. The AMD card supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170. The Intel card supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Vulkan version gap (1.2.170 versus 1.4) means the Arc supports newer extensions and better multi-threaded driver behavior. The Arc also supports FP16 at 2:1 rate (33.59 TFLOPS), while the HD 8970M has no recorded FP16 throughput, making the Intel part far more capable for machine learning inference or compute tasks that use half precision.

Specification Differences

The two GPUs differ in nearly every measurable field. Clock speeds: the HD 8970M runs at 850 MHz base and 900 MHz boost, while the Arc A770M runs at 1650 MHz base and 2050 MHz boost. The Arc’s boost clock is 2.3x higher, and its base clock is 1.9x higher. Shading units: 1280 versus 4096, a 3.2x difference. TMUs: 80 versus 256, a 3.2x difference. ROPs: 32 versus 128, a 4x difference. The Arc has 32 RT cores; the HD 8970M has none.

Memory capacity is 4 GB versus 16 GB, a 4x difference. Bandwidth is 153.6 GB/s versus 512.0 GB/s, a 3.3x difference. The HD 8970M uses PCIe 3.0 x16, while the Arc uses PCIe 4.0 x16, doubling the interface bandwidth for data transfers. TDP differs: the HD 8970M is rated at 100 W, the Arc at 120 W. Both are end-of-life products. The HD 8970M uses an MXM module slot, while the Arc is an IGP (integrated graphics processor, likely for BGA soldering). The HD 8970M has a release date of May 13, 2013; the Arc A770M has no recorded release date.

The HD 8970M’s predecessor is “London” and its successor is “Gem System,” while the Arc A770M has no recorded predecessor or successor. Neither part has a launch MSRP in the database. The HD 8970M is part of the Solar System generation (HD 8900M series), while the Arc belongs to the Alchemist generation (Arc 7 Mobile).

FAQ

Q: Which GPU is faster in OpenCL compute?

A: The Intel Arc A770M scores 89,494 in Geekbench OpenCL, versus 21,237 for the AMD Radeon HD 8970M, a 76.3% advantage for Intel.

Q: How does the HD 8970M compare to its nearest rivals?

A: It scores within 0.4% of the AMD Radeon RX Vega M GL (21,153) and 1% ahead of the NVIDIA GeForce RTX 5050 (21,035). It trails the NVIDIA RTX A4000 Mobile by 0.7% and the NVIDIA Quadro RTX 5000 by 1.8%.

Q: Does the Arc A770M support ray tracing?

A: Yes, it has 32 dedicated ray tracing cores. The HD 8970M has no RT cores.

Q: What is the memory bandwidth difference?

A: The Arc A770M has 512.0 GB/s of bandwidth (16 GB GDDR6), while the HD 8970M has 153.6 GB/s (4 GB GDDR5). That is a 3.3x difference.

Q: Which GPU has a higher percentile ranking?

A: The HD 8970M is at the 66th percentile among all GPUs, while the Arc A770M is at the 62nd percentile.

Q: Can the HD 8970M run modern APIs?

A: It supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170. The Arc A770M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so the Intel part is more future-proof.

The Verdict

The data makes the choice straightforward for anyone comparing these two today. The Intel Arc A770M is the faster GPU in every recorded metric: 4.2x higher OpenCL score, 7.3x higher texture rate, 9.1x higher pixel rate, 7.3x higher FP32 throughput, and 3.3x more memory bandwidth. It also has 4x the VRAM (16 GB versus 4 GB), 3.2x the shading units, and exclusive ray tracing hardware. If the workload is modern, compute-heavy, or uses DirectX 12 Ultimate features, the Arc A770M is the only rational pick.

The AMD Radeon HD 8970M is not without merit in historical context. Its 66th percentile ranking outpaces the Arc’s 62nd, and its OpenCL score clusters within 2% of much newer cards like the RTX 5050 and RTX A4000 Mobile. For legacy software, lower TDP (100 W versus 120 W), or systems locked to MXM modules, the HD 8970M could still serve. But benchmark results indicate no scenario where the HD 8970M beats the Arc A770M in direct performance. The Arc’s 6 nm process, 4096 shading units, and 512 GB/s memory bus are simply in a different class. Pick the Intel part for anything beyond retro compatibility; pick the AMD part only if the platform physically requires it.