AMD Radeon RX 7600S vs NVIDIA GeForce GTX 660 Ti Comparison

FAQ

Q: How much faster is the AMD Radeon RX 7600S than the NVIDIA GeForce GTX 660 Ti in compute workloads?

A: In Geekbench OpenCL, the RX 7600S scores 68,012 versus 15,113 for the GTX 660 Ti, a 350% advantage. In Geekbench Vulkan, the RX 7600S scores 73,868 versus 15,012, a 392.1% lead.

Q: Does the GTX 660 Ti support modern graphics APIs?

A: The GTX 660 Ti supports DirectX 12 (11_0), OpenGL 4.6, and Vulkan 1.2.175. The RX 7600S supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, placing it ahead in API version support.

Q: What is the memory configuration difference between the two cards?

A: The RX 7600S has 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth. The GTX 660 Ti has 2 GB of GDDR5 on a 192-bit bus with 144.2 GB/s bandwidth.

Q: Which card has a higher transistor density?

A: The RX 7600S, built on a 6 nm process, has 65.2 million transistors per mm² across a 204 mm² die. The GTX 660 Ti, on a 28 nm process, has 12.0 million transistors per mm² across a 294 mm² die.

Q: What is the thermal design power difference?

A: The RX 7600S has a TDP of 75 W and is an integrated graphics package (IGP) with no power connectors. The GTX 660 Ti has a TDP of 150 W, is a dual-slot card, and requires two 6-pin power connectors.

Q: How do their benchmark percentile rankings compare?

A: The RX 7600S sits in the 60th percentile of all GPUs with an average benchmark score of 16,696. The GTX 660 Ti sits in the 57th percentile with an average score of 15,063.

Architecture Differences

The AMD Radeon RX 7600S is built on the RDNA 3.0 architecture using the Navi 33 chip, fabricated at TSMC on a 6 nm process. The NVIDIA GeForce GTX 660 Ti uses the Kepler architecture with the GK104 chip, also from TSMC but on a much older 28 nm node. This process gap is substantial: the RX 7600S packs 13,300 million transistors into a 204 mm² die, while the GTX 660 Ti houses 3,540 million transistors on a larger 294 mm² die. The resulting transistor density tells a clear story: 65.2 million transistors per mm² for the AMD part versus 12.0 million for the NVIDIA part.

The RX 7600S belongs to the Radeon RX 7000 series and the Navi Mobile (RX 7000M) generation, with the codename Hotpink Bonefish. The GTX 660 Ti belongs to the GeForce 600 generation with no codename listed. The RX 7600S is the successor to Polaris Mobile, while the GTX 660 Ti is the predecessor to GeForce 700 series. The RX 7600S is still in active production; the GTX 660 Ti is end-of-life.

Memory technology differs fundamentally. The RX 7600S uses 8 GB of GDDR6 at 16 Gbps effective, while the GTX 660 Ti uses 2 GB of GDDR5 at 6 Gbps effective. The RX 7600S has a narrower 128-bit bus but achieves higher bandwidth at 256.0 GB/s versus 144.2 GB/s. The RX 7600S also supports PCIe 4.0 x16, while the GTX 660 Ti uses PCIe 3.0 x16.

Feature support diverges sharply. The RX 7600S has 28 ray tracing cores, which the GTX 660 Ti lacks entirely. The RX 7600S supports DirectX 12 Ultimate (12_2), whereas the GTX 660 Ti only reaches DirectX 12 (11_0). Vulkan support is also newer on the AMD card: version 1.4 versus 1.2.175. Both cards support OpenGL 4.6.

Where Each One Wins

The recorded head-to-head data shows the RX 7600S winning both available benchmarks. In Geekbench OpenCL, it scores 68,012 versus 15,113 for the GTX 660 Ti. In Geekbench Vulkan, it scores 73,868 versus 15,012. The wins tally stands at 2 for the RX 7600S and 0 for the GTX 660 Ti.

The RX 7600S is the clear compute leader. Its OpenCL and Vulkan scores are more than four and nearly five times higher respectively, indicating it handles general-purpose GPU workloads and modern graphics APIs with far greater efficiency. The GTX 660 Ti, despite its Kepler architecture being capable of OpenCL and Vulkan execution, delivers scores that are dramatically lower.

For legacy DirectX workloads, the RX 7600S also shows strength. Its PassMark DirectX 9 score is 211, DirectX 11 is 140, and DirectX 10 is 74. The GTX 660 Ti has no recorded PassMark scores in the database, so no direct comparison is possible on those older APIs. The RX 7600S also has a PassMark G3D score of 15,408 and a GPU compute score of 6,520.

The GTX 660 Ti does not win any recorded benchmark category. Its only advantages lie in physical attributes: it is a dual-slot card with two 6-pin connectors and a suggested PSU of 450 W. Those are specification characteristics, not performance wins.

Specification Differences

| Specification | AMD Radeon RX 7600S | NVIDIA GeForce GTX 660 Ti |

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

| Process node | 6 nm | 28 nm |

| Transistors | 13,300 million | 3,540 million |

| Die size | 204 mm² | 294 mm² |

| Transistor density | 65.2M / mm² | 12.0M / mm² |

| Base clock | 1500 MHz | 915 MHz |

| Boost clock | 2200 MHz | 980 MHz |

| Game clock | 1865 MHz | N/A |

| Memory clock | 2000 MHz (16 Gbps effective) | 1502 MHz (6 Gbps effective) |

| Memory size | 8 GB | 2 GB |

| Memory type | GDDR6 | GDDR5 |

| Memory bus width | 128 bit | 192 bit |

| Memory bandwidth | 256.0 GB/s | 144.2 GB/s |

| Shading units | 1792 | 1344 |

| TMUs | 112 | 112 |

| ROPs | 64 | 24 |

| Ray tracing cores | 28 | N/A |

| Pixel rate | 140.8 GPixel/s | 27.44 GPixel/s |

| Texture rate | 246.4 GTexel/s | 109.8 GTexel/s |

| FP32 performance | 15.77 TFLOPS | 2.634 TFLOPS |

| FP16 performance | 31.54 TFLOPS (2:1) | N/A |

| TDP | 75 W | 150 W |

| Slot width | IGP | Dual-slot |

| Power connectors | None | 2x 6-pin |

| Suggested PSU | N/A | 450 W |

| Bus interface | PCIe 4.0 x16 | PCIe 3.0 x16 |

| DirectX support | 12 Ultimate (12_2) | 12 (11_0) |

| Vulkan support | 1.4 | 1.2.175 |

| Production status | Active | End-of-life |

| Release date | 2023-01-03 | 2012-08-15 |

Head-to-Head Benchmarks

The database records two direct comparisons between these cards. Both show overwhelming wins for the AMD Radeon RX 7600S.

In Geekbench OpenCL, the RX 7600S scores 68,012 against the GTX 660 Ti's 15,113. The delta is 350%. This means the RX 7600S delivers roughly four and a half times the OpenCL compute throughput. For workloads that rely on OpenCL, such as certain rendering tasks or compute offloads, this gap is decisive.

In Geekbench Vulkan, the RX 7600S scores 73,868 against 15,012 for the GTX 660 Ti. The delta is 392.1%, nearly five times higher. Vulkan is a modern low-level API, and the RX 7600S's RDNA 3.0 architecture with Vulkan 1.4 support enables far better utilization of its hardware resources. The GTX 660 Ti's older Kepler design, with Vulkan 1.2.175, cannot keep pace.

Beyond these direct comparisons, the average benchmark scores place the RX 7600S at 16,696 versus 15,063 for the GTX 660 Ti. The RX 7600S ranks in the 60th percentile of all GPUs, while the GTX 660 Ti ranks in the 57th. The nearest rivals for the RX 7600S are the NVIDIA T400 4 GB (average 16,792, a 0.6% difference), the NVIDIA T400 (16,508, 1.1% difference), and the NVIDIA GeForce RTX 5090 D V2 (16,504, 1.2% difference). The GTX 660 Ti's nearest rivals include the AMD Radeon Pro 560X (15,082, 0.1% difference), the AMD Radeon RX 7600 (15,171, 0.7% difference), and the NVIDIA GeForce RTX 3050 OEM (15,199, 0.9% difference).

The Verdict

The data is unambiguous. The AMD Radeon RX 7600S wins every recorded benchmark against the NVIDIA GeForce GTX 660 Ti. In OpenCL, it leads by 350%; in Vulkan, by 392.1%. The wins tally is 2 to 0.

The RX 7600S is the correct choice for modern workloads. It has 8 GB of GDDR6 memory versus 2 GB of GDDR5, a 6 nm process versus 28 nm, and ray tracing cores that the GTX 660 Ti does not have. Its DirectX 12 Ultimate and Vulkan 1.4 support make it suitable for current and near-future titles and compute applications. Its 75 W TDP and integrated package also mean it can fit into systems where a 150 W dual-slot card with two 6-pin connectors would not.

The GTX 660 Ti is an end-of-life product from 2012. Its Kepler architecture, 2 GB memory, and 144.2 GB/s bandwidth are far below what the RX 7600S offers. Its only recorded strengths are its physical form factor and legacy connectivity, but those do not translate into any benchmark win.

For anyone choosing between these two GPUs based on performance, the RX 7600S is the only rational selection. It is over four times faster in OpenCL and nearly five times faster in Vulkan, with a higher percentile rank and a higher average benchmark score. The GTX 660 Ti may still function for very old DirectX 11-era workloads, but the database shows no scenario where it outperforms the RX 7600S.