AMD Radeon HD 7970M vs AMD Radeon RX 7700 Comparison

The Verdict

The data presents a stark generational divide. The AMD Radeon RX 7700 is the clear performance victor, but the AMD Radeon HD 7970M holds a unique position as a legacy part. For anyone building or upgrading a system today, the RX 7700 is the only rational choice from a raw compute standpoint; its Geekbench OpenCL score of 106,028 dwarfs the HD 7970M’s 17,019. However, the HD 7970M’s role is not to compete on modern performance but to serve as a historical data point, representing the GCN 1.0 era. The benchmark data shows the RX 7700 wins the only head-to-head test, with a massive delta of -83.9% (meaning the HD 7970M is 83.9% slower). The RX 7700’s percentile rank of 58th versus the HD 7970M’s 60th is a curious anomaly; despite its lower percentile, the RX 7700’s raw score is astronomically higher, suggesting the percentile is relative to a different distribution of all GPUs. In essence, the HD 7970M is for collectors and historical benchmarks, while the RX 7700 is for actual use.

Architecture Differences

The architectural leap between these two GPUs is profound, as the data indicates a complete redesign of core fundamentals. The HD 7970M is built on the GCN 1.0 architecture, using the Wimbledon chip, while the RX 7700 employs the RDNA 3.0 architecture with the Navi 32 chip. This shift is reflected in the manufacturing process: the HD 7970M uses a 28 nm node at TSMC, whereas the RX 7700 is fabricated on a much more advanced 5 nm node, also at TSMC. Transistor counts tell a story of scale: the HD 7970M packs 2,800 million transistors on a 212 mm² die, while the RX 7700 crams 28,100 million transistors onto a 346 mm² die. This results in a transistor density of 13.2M per mm² for the old part versus 81.2M per mm² for the new one, highlighting the miniaturization and efficiency gains. The RX 7700 introduces dedicated hardware that the HD 7970M completely lacks: 40 ray tracing cores. Furthermore, the RX 7700 lists its FP16 performance at 25.18 TFLOPS (1:1), a feature absent from the HD 7970M’s data. The API support also diverges, with the HD 7970M supporting DirectX 12 (11_1) and Vulkan 1.2.170, while the RX 7700 supports DirectX 12 Ultimate (12_2) and Vulkan 1.4. These are not incremental changes but a complete overhaul of the GPU’s capabilities and feature set.

Head-to-Head Benchmarks

The only direct comparison available is the Geekbench OpenCL test, and the results are not close. The AMD Radeon RX 7700 scores 106,028 points, while the AMD Radeon HD 7970M scores a mere 17,019 points. This represents a delta of -83.9% for the HD 7970M, meaning it delivers roughly one-sixth of the RX 7700’s compute performance in this workload. The data shows a staggering 6.2x advantage for the RX 7700. This single benchmark encapsulates the entire generational gap. The HD 7970M’s nearest rivals include the NVIDIA GeForce GTX 690 (avg score 17,037, delta -0.1%), the AMD Radeon RX 7600 XT (avg score 17,083, delta -0.4%), and the NVIDIA GeForce RTX 3070 (avg score 17,208, delta -1.1%). These scores are in the same ballpark, confirming the HD 7970M is a contemporary of those parts. In contrast, the RX 7700’s nearest rivals are the AMD Radeon R9 370X (avg score 15,862, delta -0.1%), the AMD Radeon RX 9060 (avg score 16,014, delta -1%), and the NVIDIA GeForce RTX 3060 Ti (avg score 16,129, delta -1.7%). The RX 7700’s score of 106,028 is so far above these rivals that the delta percentages seem almost irrelevant; it is in a different performance class entirely, making the head-to-head with the HD 7970M a formality.

Specification Differences

The specification sheets reveal fundamental differences in every major category. The most obvious is memory: the HD 7970M has 2 GB of GDDR5 on a 256-bit bus, yielding 153.6 GB/s of bandwidth, while the RX 7700 has 16 GB of GDDR6 on a 256-bit bus, yielding 624.1 GB/s. The clock speeds also differ wildly, with the RX 7700 listing a base of 1900 MHz, a game clock of 2041 MHz, and a boost of 2459 MHz; the HD 7970M lists no base or boost clock, only a memory clock of 1200 MHz (4.8 Gbps effective). The compute units scale accordingly: the HD 7970M has 1280 shading units, 80 TMUs, and 32 ROPs, while the RX 7700 has 2560 shading units, 160 TMUs, and 96 ROPs. This translates to a pixel rate of 27.20 GPixel/s and a texture rate of 68.00 GTexel/s for the old card, versus 236.1 GPixel/s and 393.4 GTexel/s for the new one. FP32 performance jumps from 2.176 TFLOPS to 25.18 TFLOPS. Power consumption also increases, with the HD 7970M rated at 100 W and the RX 7700 at 200 W. The form factor is another differentiator: the HD 7970M is an MXM Module with no power connectors and a bus interface of MXM-B (3.0), while the RX 7700 is a Dual-slot card with 2x 8-pin power connectors, a PCIe 4.0 x16 interface, and a suggested PSU of 550 W. The RX 7700 also has physical dimensions (267 mm length, 135 mm height, 50 mm width) and specific display outputs (1x HDMI 2.1, 2x DisplayPort 2.1, 1x USB Type-C), whereas the HD 7970M’s outputs are listed as "Portable Device Dependent".

FAQ

Q: Which GPU is faster in the Geekbench OpenCL test?

A: The AMD Radeon RX 7700 is dramatically faster, scoring 106,028 compared to the AMD Radeon HD 7970M’s 17,019.

Q: How much slower is the HD 7970M compared to the RX 7700?

A: The data shows a delta of -83.9% for the HD 7970M, meaning it is 83.9% slower than the RX 7700 in the head-to-head benchmark.

Q: Do both GPUs support the same DirectX version?

A: No. The HD 7970M supports DirectX 12 (11_1), while the RX 7700 supports DirectX 12 Ultimate (12_2).

Q: What is the difference in memory bandwidth?

A: The RX 7700 has a bandwidth of 624.1 GB/s, which is significantly higher than the HD 7970M’s 153.6 GB/s.

Q: Does the HD 7970M have ray tracing cores?

A: No, the data lists no ray tracing cores for the HD 7970M. The RX 7700 has 40 RT cores.

Q: What is the difference in the manufacturing process?

A: The HD 7970M uses a 28 nm process, while the RX 7700 uses a 5 nm process, both from TSMC.

Where Each One Wins

The AMD Radeon RX 7700 wins in every measurable performance category. Its compute performance is in a different league, as evidenced by its Geekbench OpenCL score and its FP32 throughput of 25.18 TFLOPS. It wins on memory capacity (16 GB versus 2 GB), bandwidth (624.1 GB/s versus 153.6 GB/s), and features, including dedicated ray tracing cores and support for DirectX 12 Ultimate. The RX 7700 is the clear winner for any modern gaming or compute workload. Its higher TDP of 200 W is the cost of that performance, but the data shows it is a necessary trade-off for the massive gains. The RX 7700’s active production status and 2025 release date further cement its place as the current, usable product.

The AMD Radeon HD 7970M’s wins are not in performance but in its historical and physical characteristics. It is an end-of-life product, released in 2012, and its only benchmark score places it near the NVIDIA GeForce GTX 690, the AMD Radeon RX 7600 XT, and the NVIDIA GeForce RTX 3070 in the Geekbench OpenCL test. This makes it a fascinating data point for understanding the performance landscape of its era. Its 100 W TDP is lower than the RX 7700’s 200 W, and its MXM Module form factor suggests it was designed for laptops or other portable devices, as indicated by its "Portable Device Dependent" display outputs. For a user looking at the data, the HD 7970M wins on power efficiency relative to its own generation and on its unique form factor, but it offers no competitive advantage in modern applications. The choice is clear: the RX 7700 is for those who need current performance, while the HD 7970M is for those studying GPU history.