AMD Radeon RX 6600 LE vs NVIDIA P102-100 Comparison

FAQ

Q: What is the AMD Radeon RX 6600 LE?

A: The AMD Radeon RX 6600 LE is a Radeon RX 6000 series graphics card based on the Navi 23 chip, built on RDNA 2.0 architecture at TSMC's 7 nm process. It was released on December 7, 2023, and remains in active production.

Q: What is the NVIDIA P102-100?

A: The NVIDIA P102-100 is a mining-focused GPU based on the GP102 chip, built on Pascal architecture at TSMC's 16 nm process. It was released on February 11, 2018, and is now end-of-life. Notably, it has no display outputs.

Q: Which card has more memory bandwidth?

A: The NVIDIA P102-100 has significantly higher memory bandwidth at 440.3 GB/s, due to its 320-bit bus and GDDR5X memory. The AMD Radeon RX 6600 LE offers 224.0 GB/s over a 128-bit GDDR6 interface.

Q: How do they compare in overall benchmark average?

A: The AMD Radeon RX 6600 LE has an average benchmark score of 70829, placing it in the 91st percentile of all GPUs. The NVIDIA P102-100 scores 58528 on average, placing it in the 88th percentile.

Q: Which card has a higher transistor count?

A: The NVIDIA P102-100 packs 11,800 million transistors on a 471 mm² die, while the AMD Radeon RX 6600 LE has 11,060 million transistors on a much smaller 237 mm² die. This gives AMD a far higher transistor density of 46.7M per mm² versus 25.1M per mm² for NVIDIA.

Q: What are the power requirements for each card?

A: The AMD Radeon RX 6600 LE has a TDP of 132 W and requires a single 8-pin power connector, with a suggested 300 W PSU. The NVIDIA P102-100 has a 250 W TDP, needs two 8-pin connectors, and calls for a 600 W PSU.

Where Each One Wins

The AMD Radeon RX 6600 LE wins outright in both recorded benchmark tests. In Geekbench OpenCL, it scores 69229 against 49602 for the NVIDIA P102-100, a decisive margin of 39.6%. In Geekbench Vulkan, the AMD card scores 72428 versus 67454, a smaller but still clear 7.4% advantage. The data records 2 wins for AMD and 0 for NVIDIA across the head-to-head suite.

The strongest case for the AMD card is its combination of a modern architecture and far better efficiency. It delivers higher scores while consuming roughly half the power (132 W versus 250 W). The RX 6600 LE also supports DirectX 12 Ultimate (12_2), while the P102-100 only reaches DirectX 12 (12_1). For users who need display outputs, the AMD card provides 1x HDMI 2.1 and 3x DisplayPort 1.4a, whereas the NVIDIA card has none.

The NVIDIA P102-100 does retain advantages in raw compute resources: it has 3200 shading units versus 1792, 200 texture mapping units versus 112, 80 ROPs versus 64, and a higher FP32 throughput of 10.77 TFLOPS against 8.942 TFLOPS. Its memory bandwidth of 440.3 GB/s is nearly double AMD's 224.0 GB/s. These are meaningful for certain workloads, but the benchmark data shows they do not translate into higher Geekbench scores.

Architecture Differences

The two cards represent different eras of GPU design. The AMD Radeon RX 6600 LE uses RDNA 2.0 architecture on a 7 nm TSMC process, fitting 11,060 million transistors into a 237 mm² die. The NVIDIA P102-100 is built on Pascal architecture using TSMC's older 16 nm process, with 11,800 million transistors spread across a much larger 471 mm² die. The density gap is stark: 46.7M transistors per mm² for AMD versus 25.1M for NVIDIA.

Feature support diverges sharply. The RX 6600 LE includes 28 ray tracing cores, a capability entirely absent from the P102-100. The AMD card also supports DirectX 12 Ultimate (12_2), while the NVIDIA card is limited to DirectX 12 (12_1). Both cards support OpenGL 4.6 and Vulkan 1.4, so those APIs are not differentiators.

Memory technology also reflects the generation gap. AMD uses 8 GB of GDDR6 on a 128-bit bus, while NVIDIA uses 5 GB of GDDR5X on a 320-bit bus. The NVIDIA card's wider bus gives it much higher bandwidth (440.3 GB/s versus 224.0 GB/s), but the AMD card has more capacity (8 GB versus 5 GB), which can matter for modern games and larger textures.

Clock behavior differs substantially. The AMD card has a base clock of 1626 MHz and a boost clock of 2495 MHz, with a game clock of 2045 MHz. The NVIDIA card runs at a base of 1582 MHz and boosts to 1683 MHz. AMD's higher clocks, combined with its newer architecture, help explain the benchmark advantage despite fewer shading units.

Specification Differences

The most obvious differences between these two cards involve memory, power, and connectivity.

• Memory size: 8 GB GDDR6 (AMD) versus 5 GB GDDR5X (NVIDIA)
• Memory bus width: 128 bit (AMD) versus 320 bit (NVIDIA)
• Memory bandwidth: 224.0 GB/s (AMD) versus 440.3 GB/s (NVIDIA)
• Memory clock: 1750 MHz, 14 Gbps effective (AMD) versus 1376 MHz, 11 Gbps effective (NVIDIA)
• Shading units: 1792 (AMD) versus 3200 (NVIDIA)
• Texture mapping units: 112 (AMD) versus 200 (NVIDIA)
• Render output units: 64 (AMD) versus 80 (NVIDIA)
• Ray tracing cores: 28 (AMD) versus none (NVIDIA)
• FP32 performance: 8.942 TFLOPS (AMD) versus 10.77 TFLOPS (NVIDIA)
• FP16 performance: 17.88 TFLOPS with 2:1 ratio (AMD) versus 168.3 GFLOPS with 1:64 ratio (NVIDIA)
• Pixel rate: 159.7 GPixel/s (AMD) versus 134.6 GPixel/s (NVIDIA)
• Texture rate: 279.4 GTexel/s (AMD) versus 336.6 GTexel/s (NVIDIA)
• TDP: 132 W (AMD) versus 250 W (NVIDIA)
• Power connectors: 1x 8-pin (AMD) versus 2x 8-pin (NVIDIA)
• Suggested PSU: 300 W (AMD) versus 600 W (NVIDIA)
• Bus interface: PCIe 4.0 x8 (AMD) versus PCIe 1.0 x4 (NVIDIA)
• Display outputs: 1x HDMI 2.1, 3x DisplayPort 1.4a (AMD) versus none (NVIDIA)
• Dimensions: 190 mm length (AMD) versus 267 mm length (NVIDIA)
• Production status: Active (AMD) versus End-of-life (NVIDIA)

The FP16 difference is especially notable. AMD achieves 17.88 TFLOPS via a 2:1 ratio, while NVIDIA only manages 168.3 GFLOPS with a 1:64 ratio, making AMD roughly 106 times faster in half-precision compute, a relevant metric for certain AI and compute workloads.

Head-to-Head Benchmarks

The Geekbench OpenCL test delivers the largest margin of victory. The AMD Radeon RX 6600 LE scores 69229, while the NVIDIA P102-100 scores 49602. That is a 39.6% advantage for AMD. This result is striking because the NVIDIA card has more shading units, more TMUs, and higher peak FP32 throughput. The data suggests that RDNA 2.0's efficiency, higher boost clocks (2495 MHz versus 1683 MHz), and modern driver optimization more than compensate for the hardware resource deficit.

In Geekbench Vulkan, the gap narrows considerably. AMD scores 72428 against 67454 for NVIDIA, a 7.4% lead. The Vulkan result shows the P102-100 is more competitive in this API, likely because its raw compute resources (3200 shading units, 440.3 GB/s bandwidth) can be utilized more effectively. Still, AMD takes the win.

Looking at the broader rival context, the RX 6600 LE's average score of 70829 places it just 1.3% behind the AMD Radeon RX 6650M (71768), while sitting 1% ahead of the NVIDIA RTX A3000 Mobile (70140) and 1.2% ahead of the NVIDIA Quadro P6000 (69986). The P102-100's average of 58528 is nearly identical to the AMD Radeon PRO V710 (58657, a 0.2% gap) and the AMD Radeon RX 6950 XT (58392, a 0.2% gap). This means the P102-100 trades blows with cards that are generally considered lower-tier, while the RX 6600 LE competes at a higher performance bracket.

The Vulkan delta of 7.4% is modest compared to the OpenCL gap. This pattern indicates that AMD's architecture has a particular advantage in OpenCL-style workloads, while Vulkan narrows the difference. For users running compute tasks that rely on OpenCL, the RX 6600 LE is the clear pick. For Vulkan-based gaming, the AMD card still wins, but the margin is less decisive.

The efficiency story is also visible in these numbers. The RX 6600 LE achieves a higher average benchmark score (70829) while drawing 132 W, whereas the P102-100 scores lower (58528) while consuming 250 W. On a performance-per-watt basis, the AMD card is substantially ahead, though the exact ratio is not recorded in the database. The P102-100's 250 W TDP and 600 W suggested PSU make it a heavier system burden, while the AMD card slots into a standard 300 W PSU setup.

In summary, the head-to-head data gives AMD a clean sweep, but the margin varies by API. OpenCL shows a dominant 39.6% gap; Vulkan shows a competitive but still winning 7.4% edge. The P102-100's end-of-life status and absence of display outputs further limit its practical appeal, while the RX 6600 LE remains active and fully equipped for standard desktop use.