AMD Radeon RX 6600 LE vs NVIDIA RTX A2000 Comparison

FAQ

Q: How does the AMD Radeon RX 6600 LE compare to the NVIDIA RTX A2000 in OpenCL performance?

A: The AMD Radeon RX 6600 LE scores 69,229 in Geekbench OpenCL, which is 2.3% ahead of the NVIDIA RTX A2000's 67,695. This gives the AMD card the win in this compute-oriented test.

Q: Which GPU wins in Vulkan performance?

A: The AMD Radeon RX 6600 LE again takes the lead, scoring 72,428 versus 69,089 for the NVIDIA RTX A2000. The delta is 4.8%, the largest margin between the two cards in any recorded benchmark.

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

A: The AMD Radeon RX 6600 LE has 8 GB of GDDR6 memory on a 128-bit bus delivering 224.0 GB/s of bandwidth. The NVIDIA RTX A2000 has 6 GB of GDDR6 memory on a wider 192-bit bus delivering 288.0 GB/s, meaning it trades capacity for higher bandwidth.

Q: How do their transistor counts and die sizes compare?

A: The NVIDIA RTX A2000 uses 12,000 million transistors on a 276 mm² die, while the AMD Radeon RX 6600 LE uses 11,060 million transistors on a 237 mm² die. The AMD chip has a higher transistor density at 46.7M per mm² versus 43.5M per mm² for NVIDIA.

Q: What is the power requirement difference?

A: The AMD Radeon RX 6600 LE is rated at 132 W TDP with a suggested 300 W power supply and requires one 8-pin power connector. The NVIDIA RTX A2000 is rated at 70 W TDP with a suggested 250 W power supply and requires no power connectors.

Q: Which card holds a higher percentile ranking among all GPUs?

A: The AMD Radeon RX 6600 LE sits at the 91st percentile, while the NVIDIA RTX A2000 sits at the 85th percentile. The AMD card's average benchmark score is 70,829, notably higher than the RTX A2000's 46,043.

Architecture Differences

The AMD Radeon RX 6600 LE is built on the RDNA 2.0 architecture, fabricated by TSMC on a 7 nm process. The NVIDIA RTX A2000 uses the Ampere architecture, manufactured by Samsung on an 8 nm node. These process differences are significant: the AMD chip packs 11,060 million transistors into a 237 mm² die, yielding a density of 46.7M transistors per mm², while the NVIDIA chip contains 12,000 million transistors spread across a larger 276 mm² die, giving a lower density of 43.5M per mm².

The two GPUs take fundamentally different approaches to compute unit organization. The AMD Radeon RX 6600 LE features 1,792 shading units, 112 texture mapping units, and 64 raster output units. It also includes 28 ray tracing cores. The NVIDIA RTX A2000, by contrast, has 3,328 shading units, 104 TMUs, and 48 ROPs, along with 26 ray tracing cores and 104 tensor cores. The NVIDIA card's higher shading unit count is partially offset by its much lower clock speeds.

Clock behavior diverges sharply between the two. The AMD card runs at a 1626 MHz base clock with a 2495 MHz boost and a 2045 MHz game clock. The NVIDIA card has a 562 MHz base and a 1200 MHz boost clock, with no separate game clock specified. This clock difference explains why the AMD card achieves an FP32 throughput of 8.942 TFLOPS despite fewer shading units, while the NVIDIA card reaches 7.987 TFLOPS.

Memory architecture also differs. The AMD card uses 8 GB of GDDR6 on a 128-bit bus, while the NVIDIA card uses 6 GB on a 192-bit bus. The NVIDIA card's wider bus gives it higher bandwidth at 288.0 GB/s versus 224.0 GB/s for AMD, despite AMD's faster effective memory speed of 14 Gbps versus 12 Gbps. The AMD card's memory clock is 1750 MHz, while NVIDIA's is 1500 MHz.

Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is identical. The AMD card has 28 ray tracing cores and no tensor cores, while the NVIDIA card has 26 ray tracing cores and 104 tensor cores, reflecting NVIDIA's focus on AI-accelerated workloads.

Where Each One Wins

The AMD Radeon RX 6600 LE wins in both recorded head-to-head benchmarks: Geekbench OpenCL and Geekbench Vulkan. Its Vulkan advantage of 4.8% is more pronounced than its OpenCL advantage of 2.3%. This suggests the AMD architecture handles Vulkan compute workloads particularly well relative to the NVIDIA card.

The NVIDIA RTX A2000's strengths appear outside the direct comparison benchmarks. Its 104 tensor cores provide dedicated hardware for AI and machine learning tasks, while the AMD card lacks tensor cores entirely. The RTX A2000 also offers significantly higher memory bandwidth at 288.0 GB/s, which benefits bandwidth-sensitive workloads. Its lower 70 W TDP makes it suitable for systems with minimal power delivery, since it requires no external power connectors.

The AMD card wins on raw compute throughput, with 8.942 TFLOPS FP32 versus 7.987 TFLOPS for NVIDIA. It also has more VRAM at 8 GB, which helps in texture-heavy or large-dataset scenarios. The AMD card's higher pixel rate of 159.7 GPixel/s versus 57.60 GPixel/s for NVIDIA indicates stronger fill-rate performance for rasterization-heavy tasks.

The NVIDIA card's production status is end-of-life, while the AMD card remains active. This matters for availability considerations in the database context.

Specification Differences

The two cards differ across nearly every major specification category. The process node is 7 nm for AMD versus 8 nm for NVIDIA. Transistor count is 11,060 million for AMD versus 12,000 million for NVIDIA. Die size is 237 mm² versus 276 mm². Transistor density is 46.7M per mm² versus 43.5M per mm².

Clock speeds differ substantially: AMD's base is 1626 MHz versus NVIDIA's 562 MHz, AMD's boost is 2495 MHz versus NVIDIA's 1200 MHz, and AMD has a game clock of 2045 MHz while NVIDIA has none. Memory clock is 1750 MHz for AMD versus 1500 MHz for NVIDIA, with effective speeds of 14 Gbps versus 12 Gbps.

Memory capacity is 8 GB versus 6 GB. Bus width is 128-bit versus 192-bit. Bandwidth is 224.0 GB/s versus 288.0 GB/s. Shading units are 1,792 versus 3,328. TMUs are 112 versus 104. ROPs are 64 versus 48. Ray tracing cores are 28 versus 26. NVIDIA has 104 tensor cores, AMD has none.

Pixel rate is 159.7 GPixel/s versus 57.60 GPixel/s. Texture rate is 279.4 GTexel/s versus 124.8 GTexel/s. FP32 is 8.942 TFLOPS versus 7.987 TFLOPS. FP16 is 17.88 TFLOPS for AMD versus 7.987 TFLOPS for NVIDIA, with AMD using a 2:1 ratio and NVIDIA using 1:1.

TDP is 132 W versus 70 W. Power connectors are one 8-pin for AMD versus none for NVIDIA. Suggested PSU is 300 W versus 250 W. Bus interface is PCIe 4.0 x8 for AMD versus PCIe 4.0 x16 for NVIDIA. Display outputs are 1x HDMI and 3x DisplayPort for AMD versus 4x mini-DisplayPort for NVIDIA.

Dimensions differ: the AMD card is 190 mm long, 110 mm tall, and 40 mm wide, while the NVIDIA card is 167 mm long and 69 mm tall with no width specified. Release dates are December 2023 for AMD versus August 2021 for NVIDIA. The AMD card is active in production; the NVIDIA card is end-of-life.

Head-to-Head Benchmarks

The database records two direct comparisons between these GPUs, and the AMD Radeon RX 6600 LE wins both. In Geekbench OpenCL, the AMD card scores 69,229 against 67,695 for the NVIDIA RTX A2000, a 2.3% advantage. This margin is modest but consistent, indicating the AMD card holds a real edge in general-purpose compute workloads.

The Vulkan result is more decisive. The AMD card scores 72,428, while the NVIDIA card scores 69,089. The 4.8% delta is more than double the OpenCL margin. This suggests the AMD card's RDNA 2.0 architecture is particularly well optimized for Vulkan's compute pathways, or that the NVIDIA card's lower clock speeds limit its Vulkan performance.

Context from the nearest rivals helps interpret these scores. The AMD Radeon RX 6600 LE's average benchmark score of 70,829 places it near the NVIDIA RTX A3000 Mobile, which averages 70,140 with a delta of 1%, and the AMD Radeon RX 6650M, which averages 71,768 with a delta of -1.3%. The AMD card also sits ahead of the NVIDIA Quadro P6000 (69,986, delta 1.2%) and the AMD Radeon Pro WX 8200 (69,870, delta 1.4%). This places the RX 6600 LE in a competitive mid-range compute tier.

The NVIDIA RTX A2000's average benchmark score is 46,043, which is dragged down by its 3DMark Steel Nomad DX12 score of 1,345. Its nearest rivals include the NVIDIA RTX 5880 Ada Generation (45,972, delta 0.2%), the Intel Arc A730M (45,592, delta 1%), the AMD Radeon RX 5600M (46,601, delta -1.2%), and the Intel Arc A530M (46,614, delta -1.2%). The RTX A2000's OpenCL and Vulkan scores of 67,695 and 69,089 respectively are within 2.3% to 4.8% of the AMD card, yet its overall average is far lower due to the 3DMark result.

This discrepancy highlights that the RTX A2000's compute performance is competitive in specific workloads, but its overall benchmark profile is less balanced. The AMD card's two benchmark scores are closely clustered, 69,229 and 72,428, while the NVIDIA card shows a wider spread across its three recorded tests.

The Verdict

The data points to the AMD Radeon RX 6600 LE as the stronger compute performer. It wins both direct head-to-head benchmarks, holds a higher percentile ranking at 91 versus 85, and delivers more FP32 throughput at 8.942 TFLOPS versus 7.987 TFLOPS. Its 8 GB of memory also exceeds the NVIDIA card's 6 GB, which benefits larger datasets and higher-resolution textures.

The AMD card is the choice for users prioritizing raw compute performance in OpenCL and Vulkan workloads. Its higher pixel rate of 159.7 GPixel/s and texture rate of 279.4 GTexel/s indicate stronger rasterization throughput as well. The card remains in active production, ensuring ongoing availability.

The NVIDIA RTX A2000 appeals in specific scenarios. Its 104 tensor cores provide dedicated AI acceleration hardware that the AMD card lacks entirely. Its 288.0 GB/s memory bandwidth is 28.6% higher than the AMD card's, which benefits bandwidth-bound tasks. The 70 W TDP with no power connectors makes it suitable for compact or power-constrained systems, and its PCIe 4.0 x16 interface offers double the lane width of the AMD card's x8 connection.

For general compute and gaming-style workloads, the AMD Radeon RX 6600 LE is the superior option based on the recorded data. For AI inference, bandwidth-sensitive applications, or low-power deployments, the NVIDIA RTX A2000 has clear advantages. The RTX A2000's end-of-life status, however, means it may become harder to source over time. The AMD card's 91st percentile ranking and higher average benchmark score of 70,829 versus 46,043 make it the safer all-around pick.