AMD Radeon HD 7950 vs AMD Radeon RX 7650 GRE Comparison

The Verdict

The data presents a clear generational divide. The AMD Radeon RX 7650 GRE is the definitive choice for any modern workload, showing a massive performance advantage in the recorded benchmarks. Its average benchmark score of 42,723 places it at the 83rd percentile of all GPUs, while the AMD Radeon HD 7950, with an average score of 33,951, sits at the 78th percentile. The RX 7650 GRE is also an active product with modern API support, whereas the HD 7950 is end-of-life. For any user building a system for current games or compute tasks, the RX 7650 GRE is the only viable option based on the data. The HD 7950, despite its historical significance, is outclassed in every measurable way, offering only a larger memory bus and higher power consumption. The choice is not a matter of preference; it is a matter of capability and relevance.

Architecture Differences

The two cards represent entirely different eras of GPU design. The AMD Radeon RX 7650 GRE is built on the RDNA 3.0 architecture, using the Navi 33 chip, and is fabricated on a 6 nm process at TSMC. This modern node packs 13,300 million transistors into a 204 mm² die, resulting in a transistor density of 65.2 million per mm². In contrast, the AMD Radeon HD 7950 uses the GCN 1.0 architecture with the Tahiti chip, built on a 28 nm process, also at TSMC. It contains only 4,313 million transistors on a much larger 352 mm² die, yielding a density of just 12.3 million per mm². This fundamental difference in manufacturing technology explains the vast gap in efficiency and performance.

The RX 7650 GRE features 2,048 shading units, 128 texture mapping units, and 64 raster operation pipelines. It also includes 32 dedicated ray tracing cores, a feature entirely absent from the HD 7950. The older card has 1,792 shading units, 112 TMUs, and only 32 ROPs. The compute capabilities are starkly different: the RX 7650 GRE delivers 22.08 TFLOPS of FP32 performance, while the HD 7950 manages just 2.867 TFLOPS. The newer card also supports FP16 at a 1:1 ratio, a feature not listed for the older model. The RX 7650 GRE supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the HD 7950 is limited to DirectX 12 (11_1) and Vulkan 1.2.170. Both support OpenGL 4.6.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon RX 7650 GRE has a significantly higher average benchmark score of 42,723, compared to the AMD Radeon HD 7950's score of 33,951. This represents a difference of 8,772 points.

Q: How does the memory configuration differ between the two cards?

A: The RX 7650 GRE uses 8 GB of GDDR6 memory on a 128-bit bus, providing 288.0 GB/s of bandwidth. The HD 7950 uses 3 GB of GDDR5 memory on a 384-bit bus, providing 240.0 GB/s of bandwidth. The newer card has more capacity and higher bandwidth despite a narrower bus.

Q: What are the power requirements for each card?

A: The RX 7650 GRE has a TDP of 170 W and requires a 450 W power supply, using a single 8-pin connector. The HD 7950 has a higher TDP of 200 W and requires a 550 W power supply, using two 6-pin connectors.

Q: Which card supports ray tracing?

A: Only the AMD Radeon RX 7650 GRE supports ray tracing, featuring 32 dedicated ray tracing cores. The AMD Radeon HD 7950 has no ray tracing cores listed in its specifications.

Q: What is the production status of each card?

A: The AMD Radeon RX 7650 GRE is listed as "Active" in production. The AMD Radeon HD 7950 is listed as "End-of-life," indicating it is no longer manufactured.

Q: How do the two cards compare in terms of pixel and texture rates?

A: The RX 7650 GRE achieves a pixel rate of 172.5 GPixel/s and a texture rate of 345.0 GTexel/s. The HD 7950 achieves a pixel rate of 25.60 GPixel/s and a texture rate of 89.60 GTexel/s. The newer card is dramatically faster in both metrics.

Specification Differences

The following table highlights the key differences between the two cards based solely on the recorded data.

• Architecture: RDNA 3.0 (RX 7650 GRE) vs. GCN 1.0 (HD 7950)
• Process Node: 6 nm (RX 7650 GRE) vs. 28 nm (HD 7950)
• Transistors: 13,300 million (RX 7650 GRE) vs. 4,313 million (HD 7950)
• Die Size: 204 mm² (RX 7650 GRE) vs. 352 mm² (HD 7950)
• Transistor Density: 65.2M / mm² (RX 7650 GRE) vs. 12.3M / mm² (HD 7950)
• Memory Size: 8 GB (RX 7650 GRE) vs. 3 GB (HD 7950)
• Memory Type: GDDR6 (RX 7650 GRE) vs. GDDR5 (HD 7950)
• Memory Bus Width: 128 bit (RX 7650 GRE) vs. 384 bit (HD 7950)
• Memory Bandwidth: 288.0 GB/s (RX 7650 GRE) vs. 240.0 GB/s (HD 7950)
• Shading Units: 2048 (RX 7650 GRE) vs. 1792 (HD 7950)
• TMUs: 128 (RX 7650 GRE) vs. 112 (HD 7950)
• ROPs: 64 (RX 7650 GRE) vs. 32 (HD 7950)
• RT Cores: 32 (RX 7650 GRE) vs. None (HD 7950)
• Pixel Rate: 172.5 GPixel/s (RX 7650 GRE) vs. 25.60 GPixel/s (HD 7950)
• Texture Rate: 345.0 GTexel/s (RX 7650 GRE) vs. 89.60 GTexel/s (HD 7950)
• FP32 Performance: 22.08 TFLOPS (RX 7650 GRE) vs. 2.867 TFLOPS (HD 7950)
• TDP: 170 W (RX 7650 GRE) vs. 200 W (HD 7950)
• Power Connectors: 1x 8-pin (RX 7650 GRE) vs. 2x 6-pin (HD 7950)
• Suggested PSU: 450 W (RX 7650 GRE) vs. 550 W (HD 7950)
• Bus Interface: PCIe 4.0 x8 (RX 7650 GRE) vs. PCIe 3.0 x16 (HD 7950)
• Display Outputs: 1x HDMI 2.1a, 3x DisplayPort 2.1 (RX 7650 GRE) vs. 1x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2 (HD 7950)
• DirectX Support: 12 Ultimate (12_2) (RX 7650 GRE) vs. 12 (11_1) (HD 7950)
• Vulkan Support: 1.4 (RX 7650 GRE) vs. 1.2.170 (HD 7950)
• Dimensions: 204 mm length (RX 7650 GRE) vs. 278 mm length (HD 7950)
• Production Status: Active (RX 7650 GRE) vs. End-of-life (HD 7950)
• Launch MSRP: 279 USD (RX 7650 GRE) vs. 449 USD (HD 7950)

Head-to-Head Benchmarks

The direct comparison is limited by the available data, but the results are decisive. The RX 7650 GRE has two recorded benchmark scores: 2,336 in 3DMark Steel Nomad DX12 and 83,109 in Geekbench OpenCL. The HD 7950 has only one recorded score: 33,951 in Geekbench Metal. While the tests are not identical, the average benchmark scores provide a clear overall picture.

The RX 7650 GRE's average score of 42,723 is 25.8% higher than the HD 7950's average of 33,951. This is a substantial margin that reflects the architectural advantages of the newer card. In terms of raw compute, the RX 7650 GRE's FP32 output of 22.08 TFLOPS is over 7.7 times that of the HD 7950's 2.867 TFLOPS. The pixel rate difference is even more pronounced, with the RX 7650 GRE achieving 172.5 GPixel/s versus the HD 7950's 25.60 GPixel/s, a factor of 6.7. The texture rate shows a similar gap, with 345.0 GTexel/s against 89.60 GTexel/s.

The nearest rivals for the RX 7650 GRE include the NVIDIA GeForce RTX 4070 SUPER, which has an average score of 43,223 and a delta of -1.2% relative to the RX 7650 GRE. This indicates the RX 7650 GRE is essentially on par with that card, trailing by a negligible 1.2%. The HD 7950's nearest rival is the AMD Radeon RX 480, with an average score of 33,997 and a delta of -0.1%, showing the HD 7950 is statistically tied with that much newer card. This contextualizes the HD 7950's performance as being comparable to a mid-range card from several generations later, while the RX 7650 GRE competes with high-end modern offerings.

Where Each One Wins

The AMD Radeon RX 7650 GRE wins in virtually every measurable category. It is the clear choice for modern gaming, particularly with its support for DirectX 12 Ultimate and 32 ray tracing cores. Its higher pixel and texture rates indicate superior performance in high-resolution rendering and texture-heavy scenes. The 8 GB of GDDR6 memory with higher bandwidth ensures it can handle modern game assets and textures. Its lower TDP of 170 W, despite higher performance, also makes it more power-efficient than the older card. The active production status and modern display outputs, including DisplayPort 2.1, make it suitable for current and future displays.

The AMD Radeon HD 7950 has no significant wins in the recorded data. Its only potential advantage is its 384-bit memory bus, which is wider than the RX 7650 GRE's 128-bit bus, but this does not translate into higher bandwidth (240.0 GB/s vs. 288.0 GB/s). It also has a higher TDP of 200 W and requires a larger power supply, which is a disadvantage. The HD 7950's only recorded benchmark, Geekbench Metal, shows a score of 33,951, which is far below the RX 7650 GRE's scores. Its nearest rival comparison shows it is tied with the RX 480, but this does not make it competitive with the RX 7650 GRE. The HD 7950's end-of-life status and lack of modern API support (no ray tracing, older DirectX version) mean it cannot handle modern workloads. In summary, the HD 7950 is a legacy product with no current use case advantage over the RX 7650 GRE.