AMD Radeon RX 7700 vs NVIDIA GeForce GTX 660 Ti Comparison

The AMD Radeon RX 7700 and NVIDIA GeForce GTX 660 Ti represent two distinct eras of GPU design, separated by over a decade of architectural evolution. The data shows a single direct benchmark comparison, with the RX 7700 delivering a decisive victory, yet the GTX 660 Ti holds a surprisingly close aggregate standing relative to its own contemporaries. This analysis breaks down the specific benchmark results, architectural chasm, and specification differences that define this matchup.

Where Each One Wins

The benchmark data presents a clear, singular outcome: the AMD Radeon RX 7700 wins the only direct head-to-head test available, the Geekbench OpenCL benchmark. In that test, the RX 7700 scores 106,028 points, against the GTX 660 Ti’s 15,113 points. This translates to a 601.6% delta in favor of the AMD card, meaning it delivers roughly seven times the raw compute performance in that specific workload. The GTX 660 Ti has no benchmark wins in this comparison, with a 0 in the wins column.

However, the use-case split is not solely about the head-to-head. The RX 7700 also possesses a broader benchmark suite, with results across DirectX 9, 10, 11, and 12, as well as Passmark G2D, G3D, and GPU Compute tests. Its Passmark G3D score of 20,974 and GPU Compute score of 10,963 indicate strong general-purpose and gaming performance. The GTX 660 Ti, by contrast, only has Geekbench OpenCL and Vulkan scores available, with its Vulkan score at 15,012. This suggests the RX 7700 is designed for modern, multi-API workloads, while the GTX 660 Ti’s data reflects a legacy focus on older DirectX titles. For any modern application leveraging OpenCL or Vulkan, the RX 7700 is the definitive winner; for legacy DirectX 9/10 scenarios, the RX 7700’s Passmark scores (261 and 92, respectively) show it can still handle those APIs, albeit with lower relative scores than its modern API results.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon RX 7700 has a higher average benchmark score of 15,852, compared to the NVIDIA GeForce GTX 660 Ti’s 15,063. This places the RX 7700 in the 58th percentile of all GPUs, while the GTX 660 Ti sits in the 57th percentile.

Q: How much faster is the RX 7700 in the Geekbench OpenCL test?

A: The RX 7700 scores 106,028 points, which is 601.6% higher than the GTX 660 Ti’s 15,113 points in the same test. This represents the only direct head-to-head benchmark available in the data.

Q: What are the closest rivals to the RX 7700 based on average score?

A: The nearest rivals to the RX 7700 are the AMD Radeon R9 370X (average score 15,862, delta -0.1%), the AMD Radeon RX 9060 (average score 16,014, delta -1%), and the AMD Radeon Pro W5500 (average score 15,679, delta 1.1%). The NVIDIA GeForce RTX 3060 Ti is also close, with an average score of 16,129 and a delta of -1.7%.

Q: Does the GTX 660 Ti support Vulkan?

A: Yes, the GTX 660 Ti supports Vulkan version 1.2.175, and its Geekbench Vulkan score is 15,012. However, this is significantly lower than the RX 7700’s OpenCL score, though no direct Vulkan comparison exists between the two cards.

Q: Which card has a higher transistor count?

A: The RX 7700 has a substantially higher transistor count of 28,100 million, compared to the GTX 660 Ti’s 3,540 million. The RX 7700 also uses a much denser 5 nm process, yielding a transistor density of 81.2M / mm², versus the GTX 660 Ti’s 12.0M / mm² on a 28 nm process.

Q: What is the memory configuration difference?

A: The RX 7700 has 16 GB of GDDR6 memory on a 256-bit bus, providing 624.1 GB/s of bandwidth. The GTX 660 Ti has 2 GB of GDDR5 memory on a 192-bit bus, providing 144.2 GB/s of bandwidth. This represents an eightfold increase in capacity and a roughly 4.3 times increase in bandwidth for the RX 7700.

Head-to-Head Benchmarks

The sole head-to-head benchmark is the Geekbench OpenCL test, and it is a landslide. The RX 7700 achieves a score of 106,028, while the GTX 660 Ti manages 15,113. The delta percentage of 601.6% is the most significant metric in this comparison, dwarfing any other performance gap. This result is consistent with the generational leap in specifications, as the RX 7700 outputs 25.18 TFLOPS of FP32 compute, compared to the GTX 660 Ti’s 2.634 TFLOPS.

To contextualize this within their respective peer groups, the RX 7700’s average score of 15,852 places it just 0.1% below its nearest rival, the AMD Radeon R9 370X, and 1.7% below the NVIDIA GeForce RTX 3060 Ti. The GTX 660 Ti’s average score of 15,063 is 0.1% below the AMD Radeon Pro 560X and 1.4% below the AMD Radeon 680M. While the GTX 660 Ti is competitive with its immediate peers, the RX 7700’s performance in the OpenCL test is in a completely different tier, indicating that its average score is held back by the inclusion of older API benchmarks where it does not excel as proportionally. The data shows the RX 7700’s lead is not incremental but exponential, driven by architectural efficiency and raw compute resources.

Specification Differences

The specification gap between these two cards is vast. The RX 7700 operates at a base clock of 1900 MHz and a boost clock of 2459 MHz, while the GTX 660 Ti runs at 915 MHz base and 980 MHz boost. Memory capacity differs eightfold: 16 GB of GDDR6 for the AMD card versus 2 GB of GDDR5 for the NVIDIA card. The memory bus is 256-bit versus 192-bit, and bandwidth is 624.1 GB/s versus 144.2 GB/s.

Compute resources also diverge sharply. The RX 7700 has 2,560 shading units, 160 TMUs, and 96 ROPs, while the GTX 660 Ti has 1,344 shading units, 112 TMUs, and 24 ROPs. Pixel rate is 236.1 GPixel/s for the RX 7700 versus 27.44 GPixel/s for the GTX 660 Ti, and texture rate is 393.4 GTexel/s versus 109.8 GTexel/s. Power requirements differ as well, with the RX 7700 rated at 200 W TDP and a suggested 550 W PSU, while the GTX 660 Ti runs at 150 W TDP with a suggested 450 W PSU. The RX 7700 uses dual 8-pin power connectors, whereas the GTX 660 Ti uses dual 6-pin connectors. Display outputs are also different: the RX 7700 offers 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C, while the GTX 660 Ti provides 2x DVI, 1x HDMI 1.4a, and 1x DisplayPort 1.2.

Architecture Differences

The architectural divide is fundamental. The RX 7700 is built on the RDNA 3.0 architecture, using the Navi 32 chip with a 5 nm process at TSMC. The GTX 660 Ti uses the Kepler architecture, based on the GK104 chip, fabricated on a 28 nm process. The RX 7700 has 28,100 million transistors on a 346 mm² die, resulting in a density of 81.2M / mm², while the GTX 660 Ti packs 3,540 million transistors on a 294 mm² die, with a density of 12.0M / mm².

The RX 7700 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and includes 40 ray tracing cores. The GTX 660 Ti supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175, but has no ray tracing cores. The RX 7700 also has a game clock of 2041 MHz, a feature absent from the GTX 660 Ti’s specifications. The production status also differs, with the RX 7700 marked as Active and the GTX 660 Ti as End-of-life. The RX 7700 is part of the Radeon RX 7000 series, succeeding Navi II, while the GTX 660 Ti belongs to the GeForce 600 generation, succeeding GeForce 500 and preceding GeForce 700.