AMD Radeon RX 6600 LE vs NVIDIA GeForce RTX 5070 SUPER Comparison

FAQ

Q: What are the core architectural differences between the AMD Radeon RX 6600 LE and the NVIDIA GeForce RTX 5070 SUPER?

A: The RX 6600 LE uses the Navi 23 chip on RDNA 2.0 architecture built on a 7 nm TSMC process, while the RTX 5070 SUPER uses the GB205 chip on Blackwell 2.0 architecture built on a 5 nm TSMC process. The RTX 5070 SUPER has 6400 shading units, 200 texture mapping units, 80 ROPs, 50 RT cores, and 200 tensor cores, versus 1792 shading units, 112 TMUs, 64 ROPs, and 28 RT cores on the RX 6600 LE.

Q: How do their memory subsystems compare?

A: The RX 6600 LE has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth. The RTX 5070 SUPER has 18 GB of GDDR7 on a 192-bit bus with 672.0 GB/s bandwidth, which is three times the bandwidth of the AMD card.

Q: What do the benchmark scores indicate about overall performance positioning?

A: The RX 6600 LE has an average benchmark score of 70829 and sits in the 91st percentile of all GPUs. The RTX 5070 SUPER has an average score of 2690 and sits in the 18th percentile. However, these scores come from different test suites (Geekbench OpenCL/Vulkan for AMD, 3DMark Steel Nomad DX12 for NVIDIA), so direct comparison is limited.

Q: Which GPUs are the nearest rivals for each card?

A: For the RX 6600 LE, the nearest rivals are the NVIDIA RTX A3000 Mobile (1% higher score), NVIDIA Quadro P6000 (1.2% higher), AMD Radeon RX 6650M (1.3% lower), and AMD Radeon Pro WX 8200 (1.4% higher). For the RTX 5070 SUPER, the nearest rivals are the NVIDIA Quadro K1100M (1% higher), NVIDIA GeForce GT 1030 (1.1% higher), and Intel Arc Pro B50 (1.1% higher).

Q: What are the physical dimensions and power requirements?

A: The RX 6600 LE measures 190 mm in length, 110 mm in height, 40 mm in width, uses a 132 W TDP, and has a 1x 8-pin power connector. The RTX 5070 SUPER measures 245 mm in length, 115 mm in height, 40 mm in width, uses a 275 W TDP, and has a 1x 16-pin power connector.

Q: What interface and display outputs does each card support?

A: The RX 6600 LE uses PCIe 4.0 x8 and offers 1x HDMI 2.1 and 3x DisplayPort 1.4a. The RTX 5070 SUPER uses PCIe 5.0 x16 and offers 1x HDMI 2.1b and 3x DisplayPort 2.1b.

Architecture Differences

The RX 6600 LE and RTX 5070 SUPER represent two distinct design generations with fundamentally different transistor budgets. The AMD card uses the Navi 23 chip with 11,060 million transistors on a 237 mm² die, yielding a transistor density of 46.7 million per square millimeter. The NVIDIA card uses the GB205 chip with 31,100 million transistors on a 263 mm² die, achieving 118.3 million transistors per square millimeter. The density difference reflects the process node gap: 7 nm for AMD versus 5 nm for NVIDIA, both fabricated by TSMC.

Compute resources differ substantially. The RX 6600 LE has 1792 shading units, 112 texture mapping units, and 64 ROPs. The RTX 5070 SUPER has 6400 shading units, 200 TMUs, and 80 ROPs. Ray tracing hardware also scales: 28 RT cores on the AMD card versus 50 on the NVIDIA card. The RTX 5070 SUPER additionally integrates 200 tensor cores, a feature the RX 6600 LE lacks entirely.

FP32 throughput tells a similar story. The RX 6600 LE delivers 8.942 TFLOPS of FP32 compute, while the RTX 5070 SUPER delivers 32.15 TFLOPS. FP16 performance differs in ratio style: AMD achieves 17.88 TFLOPS with a 2:1 ratio, while NVIDIA matches its FP32 output at 32.15 TFLOPS with a 1:1 ratio. Pixel and texture rates follow the same pattern, with the NVIDIA card reaching 201.0 GPixel/s and 502.4 GTexel/s versus 159.7 GPixel/s and 279.4 GTexel/s on the AMD card.

Memory architecture is a major differentiator. The RX 6600 LE uses 8 GB of GDDR6 on a 128-bit bus, providing 224.0 GB/s of bandwidth. The RTX 5070 SUPER uses 18 GB of GDDR7 on a 192-bit bus, providing 672.0 GB/s. That bandwidth advantage is exactly threefold and directly impacts texture streaming, ray tracing workloads, and high-resolution rendering.

Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API-level compatibility is identical. The bus interface differs: PCIe 4.0 x8 for AMD versus PCIe 5.0 x16 for NVIDIA, which matters for data transfer between CPU and GPU, especially in bandwidth-sensitive workloads.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the RX 6600 LE and the RTX 5070 SUPER. Instead, each card has its own benchmark suite, and the scores must be interpreted within their respective test contexts.

The RX 6600 LE records a Geekbench OpenCL score of 69229 and a Geekbench Vulkan score of 72428. Its average benchmark score is 70829. The RTX 5070 SUPER records a 3DMark Steel Nomad DX12 score of 2690, which serves as its average as well. These tests measure different aspects of GPU performance, so direct numerical comparison is not valid.

What the data does show is percentile placement. The RX 6600 LE sits at the 91st percentile of all GPUs, meaning it outperforms the vast majority of cards in the database. The RTX 5070 SUPER sits at the 18th percentile, a position that places it below most other cards. However, the 3DMark Steel Nomad test is a modern DX12 workload, and the RTX 5070 SUPER's percentile reflects its performance within that specific test's distribution, not necessarily across all workloads.

The nearest rival data provides more context. For the RX 6600 LE, the NVIDIA RTX A3000 Mobile scores 70140 (1% higher), the NVIDIA Quadro P6000 scores 69986 (1.2% higher), the AMD Radeon RX 6650M scores 71768 (1.3% lower), and the AMD Radeon Pro WX 8200 scores 69870 (1.4% higher). These deltas are all within a 1.4% band, indicating that the RX 6600 LE performs on par with a cluster of similarly positioned GPUs.

For the RTX 5070 SUPER, the nearest rivals cluster around a 1.7% spread: NVIDIA Quadro K1100M at 2664 (1% higher), NVIDIA GeForce GT 1030 at 2662 (1.1% higher), Intel Arc Pro B50 at 2660 (1.1% higher), and NVIDIA GeForce GT 440 at 2645 (1.7% higher). This grouping suggests the RTX 5070 SUPER's benchmark score aligns with low-end discrete GPUs, though the Steel Nomad test's demanding nature may understate its capabilities in other scenarios.

Specification Differences

The two cards differ across nearly every specification category. Process node: 7 nm for AMD versus 5 nm for NVIDIA. Transistor count: 11,060 million versus 31,100 million. Die size: 237 mm² versus 263 mm². Transistor density: 46.7M per mm² versus 118.3M per mm².

Clock speeds show the NVIDIA card operating at higher frequencies. Base clock is 1626 MHz on the RX 6600 LE versus 2325 MHz on the RTX 5070 SUPER. Boost clock is 2495 MHz versus 2512 MHz. The AMD card has a game clock of 2045 MHz, while the NVIDIA card has no game clock listed. Memory clock is 1750 MHz with 14 Gbps effective on AMD versus 1750 MHz with 28 Gbps effective on NVIDIA.

Memory configuration differs completely: 8 GB GDDR6 on a 128-bit bus versus 18 GB GDDR7 on a 192-bit bus. Bandwidth is 224.0 GB/s versus 672.0 GB/s. Shading units: 1792 versus 6400. TMUs: 112 versus 200. ROPs: 64 versus 80. RT cores: 28 versus 50. Tensor cores: none versus 200.

Power and physical specifications diverge as well. TDP is 132 W for AMD versus 275 W for NVIDIA. Power connector: 1x 8-pin versus 1x 16-pin. The AMD card has a suggested PSU of 300 W, while the NVIDIA card has no suggested PSU listed. Dimensions: 190 mm by 110 mm by 40 mm for AMD versus 245 mm by 115 mm by 40 mm for NVIDIA. Both are dual-slot cards.

Display outputs differ: AMD provides 1x HDMI 2.1 and 3x DisplayPort 1.4a, while NVIDIA provides 1x HDMI 2.1b and 3x DisplayPort 2.1b. Bus interface: PCIe 4.0 x8 versus PCIe 5.0 x16. Release dates also differ, with the RX 6600 LE released in December 2023 and the RTX 5070 SUPER at the end of December 2025.

Where Each One Wins

The RX 6600 LE wins in scenarios that favor its established benchmark results and lower power requirements. Its Geekbench OpenCL score of 69229 and Vulkan score of 72428 demonstrate solid compute performance in those specific workloads. Its 132 W TDP and 300 W suggested PSU make it suitable for systems with modest power delivery, and its 190 mm length fits smaller cases. The 8 GB memory capacity is adequate for 1080p gaming and general compute tasks, and the 91st percentile placement indicates it outperforms most GPUs in the database.

The RTX 5070 SUPER wins in scenarios that favor its hardware specifications. The 18 GB GDDR7 memory with 672.0 GB/s bandwidth is suitable for large datasets, high-resolution textures, and memory-intensive workloads. The 32.15 TFLOPS of FP32 compute and 200 tensor cores provide substantial raw processing power for compute-heavy applications. The 50 RT cores offer more ray tracing capability than the 28 on the AMD card. The PCIe 5.0 x16 interface enables faster data transfer with compatible motherboards. The 245 mm length is longer but still manageable in most mid-tower cases.

The Verdict

The data presents a clear split between the two cards. The RX 6600 LE shows a strong benchmark percentile at 91, with an average score of 70829 across Geekbench tests. Its nearest rivals all score within 1.4% of its average, indicating consistent performance within its class. The RTX 5070 SUPER shows a low percentile at 18, with an average score of 2690 in the 3DMark Steel Nomad DX12 test. Its nearest rivals also cluster within 1.7%, but at a much lower absolute score level.

The specification gap is substantial. The RTX 5070 SUPER delivers roughly 3.6 times the FP32 throughput, three times the memory bandwidth, and more than double the memory capacity. It uses a newer process node, integrates tensor cores, and supports newer display outputs. The RX 6600 LE uses significantly less power, requires a smaller PSU, and has a shorter physical length.

For users whose workloads align with the Geekbench OpenCL and Vulkan tests, the RX 6600 LE demonstrates strong relative performance. For users who need large memory capacity, high bandwidth, and maximum compute throughput, the RTX 5070 SUPER clearly offers the more capable hardware. The choice depends on whether the workload matches the AMD card's proven benchmark results or requires the NVIDIA card's expanded specifications.