AMD Radeon HD 7970 vs NVIDIA GeForce RTX 5080 Mobile Comparison

NVIDIA GeForce RTX 5080 Mobile vs AMD Radeon HD 7970 is a generational collision: a 2025 Blackwell mobile flagship against a 2012 Southern Islands desktop legend. The benchmark data shows a decisive victory for the RTX 5080 Mobile, but the HD 7970’s historical significance warrants a detailed comparison of architecture, specifications, and real-world implications.

FAQ

Q: How much faster is the NVIDIA GeForce RTX 5080 Mobile than the AMD Radeon HD 7970 in the only shared benchmark?

A: In Geekbench OpenCL, the RTX 5080 Mobile scores 166,986 versus 34,541 for the HD 7970, a 383.4% advantage.

Q: What is the average benchmark score difference between the two GPUs?

A: The RTX 5080 Mobile has an average benchmark score of 38,349 across all its tests, while the HD 7970 averages 34,541 from its single Geekbench OpenCL result.

Q: How do the two GPUs rank against all other GPUs?

A: The RTX 5080 Mobile sits in the 81st percentile of all GPUs, while the HD 7970 is in the 79th percentile, despite the massive performance gap in their shared test.

Q: What are the nearest rivals for each card based on average score?

A: The RTX 5080 Mobile’s nearest rival is the NVIDIA GeForce MX570 (0.1% delta), followed by the RTX 4080 Mobile (0.6%). The HD 7970’s nearest rival is the NVIDIA T1000 8 GB (-0.1% delta), with the NVIDIA A2 at -0.4%.

Q: Does the RTX 5080 Mobile have a higher transistor density than the HD 7970?

A: Yes, the RTX 5080 Mobile achieves 120.6M transistors per mm² on a 5 nm process, versus 12.3M per mm² for the HD 7970 on a 28 nm process.

Q: What is the memory configuration difference?

A: The RTX 5080 Mobile has 16 GB of GDDR7 on a 256-bit bus with 896.0 GB/s bandwidth, while the HD 7970 has 3 GB of GDDR5 on a 384-bit bus with 264.0 GB/s bandwidth.

Architecture Differences

The architectural gap between these two GPUs spans over a decade of GPU evolution. The RTX 5080 Mobile is built on the Blackwell 2.0 architecture using the GB203 chip, manufactured on TSMC’s 5 nm process. It packs 45,600 million transistors into a 378 mm² die, resulting in a density of 120.6M transistors per mm². In contrast, the HD 7970 uses the Tahiti chip with GCN 1.0 architecture, fabricated on TSMC’s 28 nm process, with 4,313 million transistors on a 352 mm² die (12.3M per mm²).

The RTX 5080 Mobile integrates 60 ray-tracing cores and 240 tensor cores, features entirely absent from the HD 7970. These hardware units enable hardware-accelerated ray tracing and AI-driven features like DLSS, which are core to modern gaming. The HD 7970 relies solely on traditional shader-based rendering with 2048 shading units, 128 TMUs, and 32 ROPs. The RTX 5080 Mobile scales these to 7680 shading units, 240 TMUs, and 96 ROPs.

API support further separates them: the RTX 5080 Mobile supports DirectX 12 Ultimate (12_2), Vulkan 1.4, and OpenGL 4.6. The HD 7970 is limited to DirectX 12 (11_1), Vulkan 1.2.170, and OpenGL 4.6. This means the RTX 5080 Mobile can leverage feature-level 12_2 capabilities like mesh shaders and variable-rate shading, which the HD 7970 cannot.

Power and form factor differences are stark. The RTX 5080 Mobile is an IGP (integrated graphics package) with an 80 W TDP and no power connectors, designed for laptops. The HD 7970 is a dual-slot desktop card with a 250 W TDP, requiring a 1x 6-pin + 1x 8-pin power connector and a 600 W suggested PSU. The HD 7970 measures 275 mm in length, 111 mm in height, and 38 mm in width, while the RTX 5080 Mobile’s dimensions are listed as portable-device dependent.

Head-to-Head Benchmarks

Only one benchmark directly compares the two: Geekbench OpenCL. The results are lopsided. The RTX 5080 Mobile scores 166,986, while the HD 7970 scores 34,541. This translates to a 383.4% delta in favor of the NVIDIA part. To put that in perspective, the RTX 5080 Mobile is nearly five times faster in raw compute throughput as measured by OpenCL.

This single data point aligns with the theoretical compute figures. The RTX 5080 Mobile delivers 23.04 TFLOPS of FP32 performance, versus 3.789 TFLOPS for the HD 7970—a 6.08x difference in raw floating-point capability. The memory bandwidth gap is also significant: 896.0 GB/s versus 264.0 GB/s, a 3.39x advantage for the newer card.

The RTX 5080 Mobile also has a broader benchmark suite. It scores 4,952 in 3DMark Steel Nomad DX12, 169,754 in Geekbench Vulkan, and 27,711 in Passmark G3D. It shows strong compute performance in Passmark GPU Compute (12,134) and G2D (1,095). Its Passmark DirectX scores are 314 (DX9), 253 (DX11), 171 (DX10), and 116 (DX12). The HD 7970 has no comparable results in these tests, so the head-to-head remains limited to OpenCL.

The RTX 5080 Mobile’s average benchmark score of 38,349 places it in the 81st percentile. Its nearest rival, the NVIDIA GeForce MX570, scores 38,299 (0.1% delta), and the RTX 4080 Mobile scores 38,135 (0.6% delta). This suggests the RTX 5080 Mobile is tightly clustered with other modern mobile GPUs. The HD 7970, with an average of 34,541, sits in the 79th percentile, with rivals like the NVIDIA T1000 8 GB (34,561, -0.1% delta) and NVIDIA A2 (34,690, -0.4% delta) showing close scores.

Specification Differences

The specification table shows fundamental differences across every major category. The RTX 5080 Mobile uses a 5 nm process node, while the HD 7970 uses 28 nm. Transistor count is 45,600 million versus 4,313 million, and die size is 378 mm² versus 352 mm². Transistor density is 120.6M/mm² versus 12.3M/mm².

Memory configuration diverges sharply: 16 GB GDDR7 on a 256-bit bus versus 3 GB GDDR5 on a 384-bit bus. Bandwidth is 896.0 GB/s versus 264.0 GB/s. The RTX 5080 Mobile has 7680 shading units, 240 TMUs, and 96 ROPs, compared to 2048 shading units, 128 TMUs, and 32 ROPs for the HD 7970. The RTX 5080 Mobile adds 60 RT cores and 240 tensor cores; the HD 7970 has none.

Clock speeds differ in structure: the RTX 5080 Mobile has a base clock of 975 MHz and a boost of 1500 MHz, while the HD 7970 lists no base or boost clocks. Memory clocks are 1750 MHz (28 Gbps effective) for the RTX 5080 Mobile versus 1375 MHz (5.5 Gbps effective) for the HD 7970.

Pixel rate is 144.0 GPixel/s versus 29.60 GPixel/s, and texture rate is 360.0 GTexel/s versus 118.4 GTexel/s. FP32 performance is 23.04 TFLOPS versus 3.789 TFLOPS. The RTX 5080 Mobile also supports FP16 at 23.04 TFLOPS (1:1), while the HD 7970 has no FP16 data.

TDP is 80 W for the RTX 5080 Mobile versus 250 W for the HD 7970. Bus interface is PCIe 5.0 x16 versus PCIe 3.0 x16. Display outputs are portable-device dependent for the RTX 5080 Mobile, while the HD 7970 offers 1x DVI, 1x HDMI 1.4a, and 2x mini-DisplayPort 1.2. Production status is Active versus End-of-life. Release dates are 2025-04-01 versus 2012-01-08. The HD 7970 has a launch MSRP of 549 USD; the RTX 5080 Mobile has no launch MSRP listed.

Where Each One Wins

The RTX 5080 Mobile wins in virtually every measurable category. Its 383.4% lead in Geekbench OpenCL is the headline result. In raw compute, it offers 6.08x the FP32 throughput of the HD 7970, making it vastly superior for GPU compute workloads like rendering, simulation, and machine learning inference. The 16 GB GDDR7 memory with 896.0 GB/s bandwidth provides 3.39x the bandwidth and over 5x the capacity, enabling larger textures and datasets without bottlenecking.

The RTX 5080 Mobile’s ray-tracing cores and tensor cores open up features the HD 7970 cannot access: hardware-accelerated ray tracing, DLSS upscaling, and AI-accelerated tasks. Its support for DirectX 12 Ultimate and Vulkan 1.4 ensures compatibility with modern game engines and APIs. The 80 W TDP makes it suitable for thin-and-light laptops, whereas the HD 7970’s 250 W TDP and dual-slot design confine it to desktop towers with substantial power supplies.

The HD 7970’s wins are more historical than practical. It was a pioneering card in its era, introducing GCN architecture that influenced AMD’s later products. Its 384-bit memory bus and 3 GB GDDR5 were generous for 2012, and its 264.0 GB/s bandwidth was competitive then. Its 79th percentile ranking shows it still outperforms a significant portion of all GPUs, which is remarkable for a 2012 product. In legacy DirectX 9 and older titles, its drivers and architecture may still perform admirably, though no benchmark data in the pack confirms this.

For modern users, the RTX 5080 Mobile is the clear choice for gaming, content creation, and compute workloads. For retro enthusiasts or collectors, the HD 7970 retains historical value but cannot compete in any current benchmark. The data is unambiguous: the RTX 5080 Mobile is a modern powerhouse, while the HD 7970 is a relic that has aged out of relevance.