AMD Radeon RX 6600 LE vs NVIDIA Quadro RTX 6000 Comparison

FAQ

Q: Which GPU has the higher average benchmark score in the database?

A: The NVIDIA Quadro RTX 6000 records an average score of 101,872, placing it in the 94th percentile of all GPUs. The AMD Radeon RX 6600 LE averages 70,829, which places it in the 91st percentile.

Q: How large is the performance gap in the OpenCL benchmark?

A: In Geekbench OpenCL, the Quadro RTX 6000 scores 74,179 versus the RX 6600 LE's 69,229, a 7.2% advantage for the NVIDIA card.

Q: Where does the biggest difference between the two appear?

A: The Vulkan test shows the most dramatic separation. The Quadro RTX 6000 scores 129,564 while the RX 6600 LE scores 72,428, resulting in a 78.9% lead for the NVIDIA part.

Q: What are the closest competitors to each card according to the database?

A: The Quadro RTX 6000 sits near the AMD Radeon Pro Vega II Duo (4.6% higher) and the AMD Radeon Pro W6600X (5.1% higher). The RX 6600 LE sits near the NVIDIA RTX A3000 Mobile (1% higher) and the AMD Radeon RX 6650M (1.3% higher).

Q: Which card has the higher transistor density?

A: The AMD Radeon RX 6600 LE achieves 46.7 million transistors per square millimeter on a 7 nm process, while the NVIDIA Quadro RTX 6000 reaches 24.7 million per square millimeter on a 12 nm process.

Q: Do both cards support the same modern APIs?

A: Yes, both list DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 in the database.

Where Each One Wins

The NVIDIA Quadro RTX 6000 wins both recorded head-to-head benchmarks, but the nature of those wins points to distinct strengths. Its 7.2% lead in OpenCL is modest, suggesting that in compute-oriented workloads the two cards are not far apart. The RX 6600 LE's smaller shader count is partially offset by its higher boost clock and newer architecture. The Vulkan result, however, is a different story entirely. A 78.9% advantage in that test indicates the Quadro's raw throughput advantages, its 24 GB of memory, and its larger bus width translate into a decisive edge in graphics-heavy API workloads.

The AMD Radeon RX 6600 LE does not win any recorded benchmark, but its profile suggests efficiency and compactness rather than absolute performance. It consumes 132 W versus 260 W, uses a single 8-pin connector instead of two, and requires a 300 W power supply versus 600 W. For a system builder prioritizing low power draw and small physical footprint (190 mm length versus 267 mm), the RX 6600 LE wins on integration. Its 7 nm process node and higher transistor density (46.7M per mm² versus 24.7M per mm²) point to a more modern, dense design.

Architecture Differences

The two GPUs come from entirely different architectural lineages. The NVIDIA Quadro RTX 6000 uses the Turing architecture with the TU102 chip, built on a 12 nm process at TSMC. It packs 18,600 million transistors onto a 754 mm² die. The AMD Radeon RX 6600 LE uses RDNA 2.0 with the Navi 23 chip, fabricated on a 7 nm process, also at TSMC, with 11,060 million transistors on a 237 mm² die. The density difference is stark: AMD crams nearly twice as many transistors per square millimeter (46.7M versus 24.7M).

The Quadro RTX 6000 carries 4,608 shading units, 288 texture mapping units, and 96 render output units. It also includes 72 ray tracing cores and 576 tensor cores, the latter being absent from the RX 6600 LE entirely. The AMD card fields 1,792 shading units, 112 TMUs, and 64 ROPs, plus 28 ray tracing cores. The NVIDIA card's much larger compute resource pool is reflected in its FP32 throughput of 16.31 TFLOPS versus 8.942 TFLOPS for AMD.

Memory architecture also diverges sharply. The Quadro RTX 6000 accesses 24 GB of GDDR6 across a 384-bit bus, yielding 672.0 GB/s of bandwidth. The RX 6600 LE has 8 GB of GDDR6 on a 128-bit bus, with 224.0 GB/s. Both use 14 Gbps effective memory clocks. The NVIDIA card's bandwidth advantage is roughly 3x, which helps explain its massive Vulkan lead. The RX 6600 LE compensates with a higher boost clock (2495 MHz versus 1770 MHz) and a PCIe 4.0 x8 interface, while the Quadro uses PCIe 3.0 x16.

Specification Differences

| Specification | NVIDIA Quadro RTX 6000 | AMD Radeon RX 6600 LE |

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

| Chip | TU102 | Navi 23 |

| Process node | 12 nm | 7 nm |

| Transistors | 18,600 million | 11,060 million |

| Die size | 754 mm² | 237 mm² |

| Base clock | 1440 MHz | 1626 MHz |

| Boost clock | 1770 MHz | 2495 MHz |

| Memory size | 24 GB | 8 GB |

| Memory bus width | 384 bit | 128 bit |

| Memory bandwidth | 672.0 GB/s | 224.0 GB/s |

| Shading units | 4608 | 1792 |

| TMUs | 288 | 112 |

| ROPs | 96 | 64 |

| Ray tracing cores | 72 | 28 |

| Tensor cores | 576 | None |

| FP32 performance | 16.31 TFLOPS | 8.942 TFLOPS |

| TDP | 260 W | 132 W |

| Power connectors | 1x 6-pin + 1x 8-pin | 1x 8-pin |

| Suggested PSU | 600 W | 300 W |

| Bus interface | PCIe 3.0 x16 | PCIe 4.0 x8 |

| Length | 267 mm | 190 mm |

| Release date | 2018-08-12 | 2023-12-07 |

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

The specification table reveals a generational gap. The RX 6600 LE is newer by over five years, and that shows in its process node, clocks, and power efficiency. Yet the Quadro RTX 6000 was a top-tier workstation part at launch, and its sheer scale of compute resources remains unmatched by the smaller AMD chip.

Head-to-Head Benchmarks

The Geekbench OpenCL test shows the Quadro RTX 6000 ahead by 7.2%, scoring 74,179 against 69,229. That is a real but modest edge. Given that the Quadro has 2.5 times the shading units and 3 times the memory bandwidth, a smaller delta suggests the RX 6600 LE's higher clocks (2495 MHz boost versus 1770 MHz) and newer architecture close much of the raw compute gap. In OpenCL, the AMD card punches above its spec sheet.

The Geekbench Vulkan test is where the Quadro RTX 6000 runs away. It scores 129,564 versus 72,428, a 78.9% advantage. This is the database's largest recorded gap between these two. Vulkan workloads often stress geometry throughput, texture rate, and memory bandwidth. The Quadro's 509.8 GTexel/s texture rate versus 279.4 GTexel/s, and its 672.0 GB/s bandwidth versus 224.0 GB/s, explain the separation. The Quadro also has 96 ROPs to the AMD card's 64, aiding pixel processing. The RX 6600 LE's 159.7 GPixel/s pixel rate is close to the Quadro's 169.9 GPixel/s, but that similarity does not carry over to Vulkan performance.

The database records two wins for the Quadro RTX 6000 and zero for the RX 6600 LE. The average benchmark score gap is 101,872 versus 70,829, a 43.8% difference. The Quadro's nearest rivals include the AMD Radeon Pro Vega II Duo at 106,750 and the AMD Radeon Pro W6600X at 107,342, both slightly above it. The RX 6600 LE's nearest rivals cluster tightly around it: the NVIDIA RTX A3000 Mobile at 70,140, the NVIDIA Quadro P6000 at 69,986, and the AMD Radeon Pro WX 8200 at 69,870, all within 1.4%.

The Verdict

The data paints a clear picture for raw performance. The NVIDIA Quadro RTX 6000 dominates the recorded benchmarks, winning both tests and holding a 78.9% lead in Vulkan. It also offers 24 GB of memory, 576 tensor cores, and a 384-bit bus, making it the obvious choice for workloads that demand large datasets, high bandwidth, or NVIDIA-specific features like tensor acceleration. The database places it in the 94th percentile of all GPUs, and its average score of 101,872 sits well above the RX 6600 LE's 70,829.

The AMD Radeon RX 6600 LE is the choice for efficiency and modern integration. It draws 132 W versus 260 W, needs only a 300 W power supply, and fits in a 190 mm length. Its 7 nm process and PCIe 4.0 interface are more current. It is also an active product, while the Quadro RTX 6000 is end-of-life. For a system where power draw, thermals, and physical space matter more than peak performance, the RX 6600 LE makes sense.

The use case split is straightforward. The Quadro RTX 6000 wins on every measured performance metric, and its 24 GB frame buffer suits professional visualization, large model rendering, and compute tasks. The RX 6600 LE, with its 91st percentile standing and close rivalry with mobile and workstation parts like the RTX A3000 Mobile and Quadro P6000, serves as a compact, low-power alternative that still delivers respectable OpenCL results. The 7.2% OpenCL gap shows that in pure compute, the AMD card is not far behind. The 78.9% Vulkan gap shows that in graphics-heavy scenarios, the NVIDIA card is in another class entirely. Pick the Quadro for maximum throughput. Pick the RX 6600 LE for a modern, efficient, small-footprint build where the performance deficit is acceptable.