AMD Radeon RX 6600 LE vs AMD Ryzen Z2 A GPU Comparison

Head-to-Head Benchmarks

The recorded data presents a stark comparison between the AMD Radeon RX 6600 LE and the AMD Ryzen Z2 A GPU. The RX 6600 LE has an average benchmark score of 70829, placing it in the 91st percentile of all GPUs. The Ryzen Z2 A GPU has no recorded benchmark scores, an average score of zero, and sits in the 50th percentile. This absence of direct head-to-head results means the comparison must be drawn from the individual performance characteristics and the RX 6600 LE's position relative to its nearest rivals.

The RX 6600 LE delivers 8.942 TFLOPS of FP32 compute, while the Ryzen Z2 A GPU manages 1.638 TFLOPS. This represents a 5.5-fold advantage in raw shader throughput for the RX 6600 LE. The texture rate reinforces the gap: the RX 6600 LE processes 279.4 GTexel/s compared to 51.20 GTexel/s for the Z2 A GPU, a 5.5x difference. Pixel throughput follows the same pattern, with the RX 6600 LE outputting 159.7 GPixel/s versus 25.60 GPixel/s for the Z2 A GPU, a 6.2x advantage.

The RX 6600 LE's nearest rivals provide context for its standing. It scores 1% above the NVIDIA RTX A3000 Mobile (70140) and 1.2% above the NVIDIA Quadro P6000 (69986). It trails the AMD Radeon RX 6650M (71768) by 1.3% and sits 1.4% ahead of the AMD Radeon Pro WX 8200 (69870). These margins are narrow, indicating the RX 6600 LE is competitive with a group of workstation and mobile GPUs clustered around the 70000 mark. The Ryzen Z2 A GPU has no nearest rivals listed, and its zero score places it outside this competitive field entirely.

Memory bandwidth shows another decisive split. The RX 6600 LE uses 8 GB of GDDR6 across a 128-bit bus, achieving 224.0 GB/s. The Ryzen Z2 A GPU uses 16 GB of LPDDR5 across the same 128-bit bus width, but only reaches 102.4 GB/s. The RX 6600 LE delivers more than double the memory bandwidth despite having half the capacity. The Z2 A GPU's clock speeds also lag considerably: its 1000 MHz base and 1600 MHz boost are far below the RX 6600 LE's 1626 MHz base and 2495 MHz boost. Even the RX 6600 LE's game clock of 2045 MHz exceeds the Z2 A GPU's maximum boost by 445 MHz.

Where Each One Wins

The RX 6600 LE wins in every measured performance category. Its shading unit count of 1792 dwarfs the Z2 A GPU's 512. Its 112 texture mapping units and 64 raster output pipelines compare to 32 TMUs and 16 ROPs on the Z2 A GPU. The RX 6600 LE also holds an advantage in ray tracing hardware with 28 RT cores versus 8. Geometry throughput favors the desktop card, and the memory system is substantially faster as measured by bandwidth.

The Ryzen Z2 A GPU's advantages are structural rather than performance-based. It offers 16 GB of memory, double the RX 6600 LE's 8 GB, which supports larger datasets in memory-constrained workloads. Its 15 W TDP is dramatically lower than the RX 6600 LE's 132 W, making it suitable for low-power environments. The Z2 A GPU also uses a single USB Type-C display output, which simplifies integration into compact systems. Its 2,400 million transistors on a 163 mm² die produce a transistor density of 14.7M per mm², compared to the RX 6600 LE's 11,060 million transistors on a 237 mm² die at 46.7M per mm². The Z2 A GPU is a smaller, lower-power part by design.

The RX 6600 LE is a dual-slot card with a 190 mm length, 110 mm height, and 40 mm width. It requires a 1x 8-pin power connector and a 300 W suggested power supply. The Z2 A GPU has no listed dimensions, slot width, power connectors, or power supply requirement, consistent with its status as an embedded or mobile-class component rather than a discrete add-in card.

Architecture Differences

Both GPUs share the RDNA 2.0 architecture and are manufactured on TSMC's 7 nm process. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The similarities end there.

The RX 6600 LE uses the Navi 23 chip from the Radeon RX 6000 series, part of the Navi II generation. Its 11,060 million transistors are packed into a 237 mm² die. The memory subsystem consists of 8 GB of GDDR6 on a 128-bit bus, with memory clocked at 1750 MHz or 14 Gbps effective. The card operates at a 132 W TDP and connects via PCIe 4.0 x8. Display outputs include one HDMI 2.1 and three DisplayPort 1.4a connectors.

The Ryzen Z2 A GPU uses the Van Gogh chip and is categorized under the Console GPU generation. Its 2,400 million transistors occupy a 163 mm² die. Memory is 16 GB of LPDDR5 on a 128-bit bus, clocked at 800 MHz or 6.4 Gbps effective. The TDP is 15 W. No bus interface is listed, and the sole display output is a USB Type-C port. The Z2 A GPU's FP16 performance is 3.277 TFLOPS (2:1), derived from halving its FP32 rate, while the RX 6600 LE reaches 17.88 TFLOPS FP16 (2:1). The RX 6600 LE's FP32 output of 8.942 TFLOPS exceeds the Z2 A GPU's entire compute capability by a factor of 5.5.

The transistor density figures highlight the design intent. The RX 6600 LE achieves 46.7M transistors per mm², a high-density desktop implementation. The Z2 A GPU's 14.7M per mm² reflects a smaller, simpler layout optimized for low power rather than peak throughput.

FAQ

Q: Which GPU has higher raw compute performance?

A: The AMD Radeon RX 6600 LE delivers 8.942 TFLOPS FP32, while the AMD Ryzen Z2 A GPU delivers 1.638 TFLOPS FP32. The RX 6600 LE is 5.5 times faster in this metric.

Q: What is the memory capacity and bandwidth difference?

A: The Ryzen Z2 A GPU has 16 GB of LPDDR5 memory with 102.4 GB/s bandwidth. The RX 6600 LE has 8 GB of GDDR6 memory with 224.0 GB/s bandwidth. The RX 6600 LE provides over twice the bandwidth with half the capacity.

Q: How does the RX 6600 LE compare to its nearest rivals?

A: It scores 1% above the NVIDIA RTX A3000 Mobile (70140), 1.2% above the NVIDIA Quadro P6000 (69986), 1.4% above the AMD Radeon Pro WX 8200 (69870), and 1.3% below the AMD Radeon RX 6650M (71768).

Q: What are the power requirements for each GPU?

A: The RX 6600 LE has a 132 W TDP, requires a 1x 8-pin power connector, and a 300 W suggested power supply. The Ryzen Z2 A GPU has a 15 W TDP with no listed power connector or power supply requirement.

Q: Do both GPUs support the same graphics APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What are the clock speeds of each GPU?

A: The RX 6600 LE runs at a 1626 MHz base clock, 2045 MHz game clock, and 2495 MHz boost clock. The Ryzen Z2 A GPU runs at a 1000 MHz base clock and 1600 MHz boost clock.

Q: What is the benchmark percentile ranking for each GPU?

A: The RX 6600 LE ranks in the 91st percentile of all GPUs with an average score of 70829. The Ryzen Z2 A GPU ranks in the 50th percentile with an average score of zero and no recorded benchmarks.

The Verdict

The data clearly favors the AMD Radeon RX 6600 LE as the higher-performing GPU. Its FP32 throughput, texture rate, pixel rate, and memory bandwidth all exceed the Ryzen Z2 A GPU by multiples of five or more. Its 91st percentile ranking and competitive position against the RTX A3000 Mobile, Quadro P6000, RX 6650M, and Pro WX 8200 confirm it operates in a different performance class. The RX 6600 LE is a desktop discrete GPU designed for sustained workload execution with a 132 W TDP and full display connectivity.

The Ryzen Z2 A GPU occupies a distinct niche. Its 15 W TDP, 16 GB of LPDDR5 memory, and single USB Type-C output indicate a low-power, integrated solution. Its 50th percentile ranking with no benchmark data means its performance cannot be quantified from the database. What is known is that its compute resources, 512 shading units, 32 TMUs, 16 ROPs, and 8 RT cores, are a fraction of the RX 6600 LE's configuration.

For workloads requiring maximum throughput, the RX 6600 LE is the only choice. For power-constrained environments where 16 GB of memory and minimal thermal output matter more than raw speed, the Ryzen Z2 A GPU has a defined role. The RX 6600 LE's release date of December 2023 and active production status contrast with the Z2 A GPU's December 2024 release and active status, but neither product's launch price is recorded. The RX 6600 LE's nearest rivals show margins of 1 to 1.4 percent, a tight field where the card holds its own. The Z2 A GPU has no rivals listed, leaving its competitive position undefined. The verdict from the measurements is uncomplicated: the RX 6600 LE outperforms the Ryzen Z2 A GPU in every recorded performance metric, and the Z2 A GPU's advantages are limited to power efficiency, memory capacity, and physical footprint.