AMD Radeon RX 7650 GRE vs NVIDIA GeForce RTX 4090 Comparison

Architecture Differences

The NVIDIA GeForce RTX 4090 and AMD Radeon RX 7650 GRE represent two fundamentally different design philosophies. The RTX 4090 is built on the AD102 chip using the Ada Lovelace architecture, manufactured on a 5 nm process at TSMC. It packs 76,300 million transistors onto a 609 mm² die, yielding a transistor density of 125.3M per mm². In contrast, the RX 7650 GRE uses the Navi 33 chip with RDNA 3.0 architecture, built on a 6 nm process, also at TSMC. This chip contains 13,300 million transistors on a 204 mm² die, with a density of 65.2M per mm². The RTX 4090's die is three times larger and holds nearly six times more transistors.

The compute architectures diverge sharply. The RTX 4090 features 16,384 shading units, 512 texture mapping units, and 176 raster operation pipelines. It also includes 128 ray tracing cores and 512 tensor cores, the latter being absent entirely from the RX 7650 GRE. The AMD card offers 2,048 shading units, 128 TMUs, and 64 ROPs, with 32 ray tracing cores but no tensor core equivalent. These differences translate into massive throughput gaps: the RTX 4090 delivers 82.58 TFLOPS FP32 and FP16 (1:1), while the RX 7650 GRE manages 22.08 TFLOPS in both precision formats. The pixel rate stands at 443.5 GPixel/s for NVIDIA versus 172.5 GPixel/s for AMD, and texture rate is 1,290.2 GTexel/s versus 345.0 GTexel/s.

Memory architecture is equally distinct. The RTX 4090 uses 24 GB of GDDR6X on a 384-bit bus, achieving 1.01 TB/s bandwidth. The RX 7650 GRE comes with 8 GB of GDDR6 on a 128-bit bus, delivering 288.0 GB/s. Clock behavior differs too: the RTX 4090 runs at a 2235 MHz base and 2520 MHz boost, while AMD's card has a 1720 MHz base, 2350 MHz game clock, and 2695 MHz boost. The NVIDIA part draws up to 450 W with a triple-slot cooler and a single 16-pin connector, requiring an 850 W power supply. AMD's card is far more modest at 170 W, dual-slot, with one 8-pin connector and a 450 W suggested PSU.

Where Each One Wins

The RTX 4090 wins in every recorded benchmark category without exception. Its wins are so dominant that the RX 7650 GRE cannot claim a single head-to-head victory in the database. The NVIDIA card excels in raw compute-heavy workloads, as shown by its Geekbench OpenCL score of 255,416 versus 83,109 for AMD, a 207.3% advantage. In modern DX12 gaming workloads, represented by 3DMark Steel Nomad, the RTX 4090 scores 9,223 against 2,336, a 294.8% lead. This makes the RTX 4090 the clear choice for 4K gaming, high-refresh-rate scenarios, ray tracing, and GPU compute tasks such as rendering or machine learning inference.

The RX 7650 GRE, while losing every benchmark, still occupies a distinct position. Its 83rd percentile ranking among all GPUs (versus 88th for the RTX 4090) indicates it is a capable performer for mainstream 1080p or entry-level 1440p gaming. Its lower power draw of 170 W and dual-slot design make it suitable for smaller builds or systems with modest power supplies. The card also supports DisplayPort 2.1 outputs, whereas the RTX 4090 only offers DisplayPort 1.4a. For users who prioritize physical footprint, power efficiency, or the newest display interface standard, the RX 7650 GRE has practical advantages, even though its benchmark scores are far lower.

FAQ

Q: Which card has more ray tracing cores?

A: The NVIDIA GeForce RTX 4090 has 128 ray tracing cores, while the AMD Radeon RX 7650 GRE has 32. The RTX 4090 also adds 512 tensor cores, which the RX 7650 GRE lacks entirely.

Q: What is the memory bandwidth difference?

A: The RTX 4090 delivers 1.01 TB/s from 24 GB of GDDR6X on a 384-bit bus. The RX 7650 GRE provides 288.0 GB/s from 8 GB of GDDR6 on a 128-bit bus. That is roughly a 3.5x bandwidth advantage for NVIDIA.

Q: How do their power requirements compare?

A: The RTX 4090 has a 450 W TDP, requires a triple-slot cooler, a single 16-pin power connector, and an 850 W suggested PSU. The RX 7650 GRE has a 170 W TDP, a dual-slot cooler, a single 8-pin connector, and a 450 W suggested PSU.

Q: Are both cards still in production?

A: No. The RTX 4090 is listed as end-of-life, while the RX 7650 GRE is marked as active production. The RTX 4090 was released on 2022-09-19, and the RX 7650 GRE on 2025-02-06.

Q: Which card performs better in Geekbench OpenCL?

A: The RTX 4090 scores 255,416 versus 83,109 for the RX 7650 GRE, a 207.3% difference. This indicates a massive gap in general-purpose compute performance.

Q: What is the transistor density difference?

A: The RTX 4090 has a density of 125.3M transistors per mm², while the RX 7650 GRE has 65.2M per mm². The NVIDIA chip uses a smaller 5 nm process compared to AMD's 6 nm process.

Head-to-Head Benchmarks

The database records two direct head-to-head comparisons, and the RTX 4090 wins both by enormous margins.

In 3DMark Steel Nomad DX12, the RTX 4090 scores 9,223 against 2,336 for the RX 7650 GRE. This represents a 294.8% delta, meaning the NVIDIA card delivers nearly four times the performance in this modern DX12 gaming workload. Such a gap indicates that the RTX 4090 can handle very high resolutions and frame rates that the RX 7650 GRE cannot approach. The RX 7650 GRE's score of 2,336 places it in a different performance tier entirely, closer to mid-range parts than to the flagship segment.

In Geekbench OpenCL, the RTX 4090 scores 255,416 versus 83,109 for the RX 7650 GRE, a 207.3% advantage. OpenCL is a proxy for general compute tasks such as physics simulation, video encoding, or scientific workloads. The RTX 4090's 82.58 TFLOPS FP32 throughput, combined with its tensor cores, makes it disproportionately strong in these tasks. The RX 7650 GRE's 22.08 TFLOPS is respectable for its class, but it is simply outclassed here.

The RTX 4090 also holds a much higher average benchmark score of 60,347 across all recorded tests, versus 42,723 for the RX 7650 GRE. This 41.3% average difference is actually smaller than the head-to-head gaps, because the average includes multiple legacy DirectX tests where the gap narrows. For instance, the RTX 4090 scores 397 in PassMark DirectX 9, 326 in DirectX 11, and 224 in DirectX 10, while its PassMark G3D score is 38,194 and GPU compute score is 26,613. The RX 7650 GRE only has two recorded benchmarks, which limits direct comparison, but the two shared tests tell a consistent story of NVIDIA dominance.

Specification Differences

| Specification | NVIDIA GeForce RTX 4090 | AMD Radeon RX 7650 GRE |

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

| Architecture | Ada Lovelace | RDNA 3.0 |

| Process Node | 5 nm | 6 nm |

| Transistors | 76,300 million | 13,300 million |

| Die Size | 609 mm² | 204 mm² |

| Transistor Density | 125.3M / mm² | 65.2M / mm² |

| Base Clock | 2235 MHz | 1720 MHz |

| Boost Clock | 2520 MHz | 2695 MHz |

| Game Clock | N/A | 2350 MHz |

| Memory Size | 24 GB | 8 GB |

| Memory Type | GDDR6X | GDDR6 |

| Memory Bus | 384 bit | 128 bit |

| Memory Bandwidth | 1.01 TB/s | 288.0 GB/s |

| Shading Units | 16,384 | 2,048 |

| TMUs | 512 | 128 |

| ROPs | 176 | 64 |

| RT Cores | 128 | 32 |

| Tensor Cores | 512 | None |

| Pixel Rate | 443.5 GPixel/s | 172.5 GPixel/s |

| Texture Rate | 1,290.2 GTexel/s | 345.0 GTexel/s |

| FP32 / FP16 | 82.58 TFLOPS | 22.08 TFLOPS |

| TDP | 450 W | 170 W |

| Slot Width | Triple-slot | Dual-slot |

| Power Connectors | 1x 16-pin | 1x 8-pin |

| Suggested PSU | 850 W | 450 W |

| Bus Interface | PCIe 4.0 x16 | PCIe 4.0 x8 |

| Display Outputs | 1x HDMI 2.1, 3x DisplayPort 1.4a | 1x HDMI 2.1a, 3x DisplayPort 2.1 |

| Dimensions (L x H x W) | 304 x 137 x 61 mm | 204 x 115 mm (width not recorded) |

| Production Status | End-of-life | Active |

| Release Date | 2022-09-19 | 2025-02-06 |

| Launch MSRP | 1,599 USD | 279 USD |

The Verdict

The data is unambiguous: the NVIDIA GeForce RTX 4090 outperforms the AMD Radeon RX 7650 GRE in every recorded benchmark. The RTX 4090 wins both head-to-head tests, with deltas of 294.8% in 3DMark Steel Nomad and 207.3% in Geekbench OpenCL. Its average benchmark score of 60,347 is 41.3% higher than the RX 7650 GRE's 42,723. The RTX 4090 also holds a higher percentile ranking at 88 versus 83.

For users who need maximum performance, the RTX 4090 is the only choice. Its 24 GB memory, 1.01 TB/s bandwidth, and 82.58 TFLOPS compute throughput make it suitable for 4K gaming, ray tracing, content creation, and compute workloads. The RX 7650 GRE cannot compete in any of these areas based on the recorded data.

However, the RX 7650 GRE has legitimate appeal for different users. Its 170 W TDP, dual-slot design, and 450 W PSU requirement make it far easier to integrate into compact or power-constrained systems. It is also an active product, whereas the RTX 4090 is end-of-life. The AMD card supports DisplayPort 2.1, which the RTX 4090 lacks. For a user building a mainstream gaming PC at 1080p or 1440p, the RX 7650 GRE's 83rd percentile ranking indicates it will handle most titles, though the RTX 4090 will crush it in any direct comparison.

The verdict from the database: the RTX 4090 is the performance king, but the RX 7650 GRE is the practical, power-efficient alternative for those who do not need flagship-level output. Neither card should be chosen based on price, as the launch MSRP figures of 1,599 USD and 279 USD reflect entirely different market positions. The choice hinges strictly on whether the user's workloads require the RTX 4090's overwhelming compute and memory advantages.