AMD Radeon HD 8970M vs AMD Radeon RX 7900 XTX Comparison

The Verdict

The benchmark data presents a stark generational contrast. The AMD Radeon RX 7900 XTX is the clear performance victor, decisively winning the only shared benchmark with a score of 50,465 in Geekbench OpenCL, which is 138% higher than the HD 8970M’s 21,237. The HD 8970M, however, holds a unique position: its average benchmark score of 21,237 places it at the 66th percentile of all GPUs, while the RX 7900 XTX’s average of 19,410 sits at the 64th percentile. This inversion—where the older card has a higher percentile ranking despite losing the head-to-head—stems from the RX 7900 XTX’s diverse benchmark suite, which includes lower DirectX 9/10/11 scores that drag its average down.

From the data, the RX 7900 XTX is the obvious choice for anyone seeking raw modern performance, particularly in OpenCL compute workloads. Its 24 GB GDDR6 memory, 384-bit bus, and 61.39 TFLOPS FP32 throughput dwarf the HD 8970M’s 4 GB GDDR5, 256-bit bus, and 2.304 TFLOPS. The HD 8970M, being end-of-life since 2013, is a legacy part suited only for vintage systems or basic tasks—its 66th percentile ranking is respectable for its era but does not translate to competitive performance against a 2022 flagship.

The RX 7900 XTX’s nearest rivals in average score—NVIDIA GeForce GTX 1060 3 GB (delta 0.4%), NVIDIA Quadro K5200 (delta -1%), AMD FirePro D300 (delta -1.2%), NVIDIA TITAN Xp (delta 1.2%)—are all far older or lower-tier cards, highlighting that its average is dragged down by legacy API tests. The HD 8970M’s rivals—AMD Radeon RX Vega M GL (delta 0.4%), NVIDIA RTX A4000 Mobile (delta -0.7%), NVIDIA GeForce RTX 5050 (delta 1%), NVIDIA Quadro RTX 5000 (delta -1.8%)—are all much more modern, showing it punches above its age in OpenCL but not in overall capability.

Architecture Differences

The two GPUs are separated by nearly a decade of architectural evolution. The HD 8970M uses the Neptune chip built on GCN 1.0 architecture, fabricated on TSMC’s 28 nm process with 2,800 million transistors on a 212 mm² die, yielding a transistor density of 13.2M per mm². The RX 7900 XTX uses the Navi 31 chip with RDNA 3.0 architecture, built on TSMC’s 5 nm process with 57,700 million transistors on a 529 mm² die, achieving a density of 109.1M per mm². This represents a 20.6x increase in transistor count and an 8.3x increase in density.

Core configurations differ dramatically. The HD 8970M has 1,280 shading units, 80 TMUs, and 32 ROPs, while the RX 7900 XTX has 6,144 shading units, 384 TMUs, and 192 ROPs—4.8x, 4.8x, and 6x more respectively. The RX 7900 XTX also introduces 96 ray tracing cores, a feature entirely absent from the HD 8970M. Clock speeds have more than doubled: the HD 8970M’s base is 850 MHz with a 900 MHz boost, while the RX 7900 XTX runs at 1,929 MHz base, 2,365 MHz game clock, and 2,498 MHz boost. Memory technology advanced from GDDR5 at 4.8 Gbps effective to GDDR6 at 20 Gbps effective, with bandwidth increasing from 153.6 GB/s to 960.0 GB/s.

API support reflects the generational gap. The HD 8970M supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170, while the RX 7900 XTX supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7900 XTX also features a PCIe 4.0 x16 interface versus the HD 8970M’s PCIe 3.0 x16, and its display outputs include 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C, whereas the HD 8970M’s outputs are described as "Portable Device Dependent" due to its MXM Module form factor.

Head-to-Head Benchmarks

The only shared benchmark between the two is Geekbench OpenCL, where the RX 7900 XTX scores 50,465 against the HD 8970M’s 21,237, a delta of -57.9% from the RX 7900 XTX’s perspective (meaning the HD 8970M is 57.9% lower). This is a decisive win for the newer card, representing a 2.38x improvement in raw compute throughput as measured by OpenCL. The RX 7900 XTX’s FP32 of 61.39 TFLOPS versus the HD 8970M’s 2.304 TFLOPS—a 26.6x difference—explains this result, though the OpenCL score gap is smaller due to memory bandwidth and driver overheads.

The RX 7900 XTX also shows strength in other benchmarks it has that the HD 8970M lacks: Passmark G3D at 31,238, Passmark GPU Compute at 17,689, Geekbench Vulkan at 85,612, and 3DMark Steel Nomad DX12 at 6,841. These scores, while not directly comparable to the HD 8970M (which has no such results), demonstrate the RX 7900 XTX’s versatility across modern APIs. Notably, the RX 7900 XTX’s Passmark DirectX 9 score of 330 and DirectX 10 score of 166 are low relative to its G3D score, but these are legacy benchmarks where the RDNA 3.0 architecture does not optimize. The HD 8970M, with its older GCN 1.0 design, would likely fare better relative to its overall capability in these legacy tests, but no direct comparison data exists.

The wins tally is 1-0 in favor of the RX 7900 XTX. The HD 8970M wins no benchmarks in the head-to-head dataset. Its 66th percentile ranking, however, indicates that in the broader GPU landscape, it outperforms 66% of all GPUs in its single OpenCL test, which is notable for a 2013 mobile chip.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The HD 8970M has a higher average benchmark score of 21,237, compared to the RX 7900 XTX’s 19,410. This is because the HD 8970M has only one benchmark result (Geekbench OpenCL at 21,237), while the RX 7900 XTX has ten results, including low legacy DirectX scores that lower its average.

Q: What is the performance difference in the shared OpenCL test?

A: The RX 7900 XTX scores 50,465 in Geekbench OpenCL, which is 138% higher than the HD 8970M’s 21,237. The delta percentage from the RX 7900 XTX’s perspective is -57.9%, meaning the HD 8970M is 57.9% below the RX 7900 XTX’s score.

Q: How do the memory subsystems compare?

A: The HD 8970M has 4 GB of GDDR5 memory on a 256-bit bus with 153.6 GB/s bandwidth. The RX 7900 XTX has 24 GB of GDDR6 memory on a 384-bit bus with 960.0 GB/s bandwidth—a 6x increase in capacity and a 6.25x increase in bandwidth.

Q: Does the RX 7900 XTX support ray tracing?

A: Yes, the RX 7900 XTX includes 96 ray tracing cores. The HD 8970M has no ray tracing cores, as this feature was not available in its GCN 1.0 architecture generation.

Q: What are the power requirements?

A: The HD 8970M has a 100 W TDP and uses an MXM Module form factor. The RX 7900 XTX has a 355 W TDP, requires a 750 W suggested PSU, uses 2x 8-pin power connectors, and is a dual-slot card measuring 287 mm in length.

Q: Which GPU has a higher percentile ranking?

A: The HD 8970M ranks at the 66th percentile of all GPUs, while the RX 7900 XTX ranks at the 64th percentile. This counterintuitive result is due to the RX 7900 XTX’s broader benchmark suite, which includes low scores in Passmark DirectX 9 (330), DirectX 10 (166), DirectX 11 (356), and DirectX 12 (131) tests.

Where Each One Wins

The RX 7900 XTX wins in every measurable compute category where data exists. Its OpenCL score of 50,465 is more than double the HD 8970M’s 21,237. In terms of raw throughput, the RX 7900 XTX’s texture rate of 959.2 GTexel/s is 13.3x higher than the HD 8970M’s 72.00 GTexel/s, and its pixel rate of 479.6 GPixel/s is 16.7x higher than 28.80 GPixel/s. FP32 compute is 26.6x higher at 61.39 TFLOPS versus 2.304 TFLOPS. The RX 7900 XTX also supports FP16 at 122.8 TFLOPS (2:1), a feature the HD 8970M lacks entirely.

The RX 7900 XTX is the only choice for modern gaming or compute workloads requiring DirectX 12 Ultimate, Vulkan 1.4, or ray tracing. Its 24 GB memory capacity is suitable for large datasets or high-resolution textures, and its PCIe 4.0 interface doubles the bandwidth of the HD 8970M’s PCIe 3.0. The RX 7900 XTX’s display outputs—HDMI 2.1a, DisplayPort 2.1, USB Type-C—support modern monitors and VR headsets, whereas the HD 8970M’s outputs are dependent on the portable device it is installed in.

The HD 8970M’s only "win" is its percentile ranking (66th vs 64th) and its single-benchmark average being higher. In practical terms, its 100 W TDP makes it far more power-efficient than the RX 7900 XTX’s 355 W, and its MXM Module form factor means it was designed for laptops rather than desktop towers. For legacy systems requiring a GCN 1.0 card with 28 nm process and 4 GB GDDR5, the HD 8970M fills a niche, but it cannot handle modern titles or compute workloads. The data shows the RX 7900 XTX wins decisively for any user needing current-generation performance; the HD 8970M is strictly a historical artifact or a low-power mobile solution.

Specification Differences

| Field | AMD Radeon HD 8970M | AMD Radeon RX 7900 XTX |

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

| Architecture | GCN 1.0 | RDNA 3.0 |

| Process Node | 28 nm | 5 nm |

| Transistors | 2,800 million | 57,700 million |

| Die Size | 212 mm² | 529 mm² |

| Transistor Density | 13.2M / mm² | 109.1M / mm² |

| Base Clock | 850 MHz | 1929 MHz |

| Boost Clock | 900 MHz | 2498 MHz |

| Game Clock | — | 2365 MHz |

| Memory Clock | 1200 MHz (4.8 Gbps effective) | 2500 MHz (20 Gbps effective) |

| Memory Size | 4 GB | 24 GB |

| Memory Type | GDDR5 | GDDR6 |

| Memory Bus | 256 bit | 384 bit |

| Memory Bandwidth | 153.6 GB/s | 960.0 GB/s |

| Shading Units | 1280 | 6144 |

| TMUs | 80 | 384 |

| ROPs | 32 | 192 |

| RT Cores | — | 96 |

| Pixel Rate | 28.80 GPixel/s | 479.6 GPixel/s |

| Texture Rate | 72.00 GTexel/s | 959.2 GTexel/s |

| FP32 | 2.304 TFLOPS | 61.39 TFLOPS |

| FP16 | — | 122.8 TFLOPS (2:1) |

| TDP | 100 W | 355 W |

| Slot Width | MXM Module | Dual-slot |

| Power Connectors | — | 2x 8-pin |

| Suggested PSU | — | 750 W |

| Bus Interface | PCIe 3.0 x16 | PCIe 4.0 x16 |

| Display Outputs | Portable Device Dependent | 1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C |

| DirectX | 12 (11_1) | 12 Ultimate (12_2) |

| Vulkan | 1.2.170 | 1.4 |

| Release Date | 2013-05-13 | 2022-11-02 |

| Production Status | End-of-life | End-of-life |

| Launch MSRP | — | 999 USD |