AMD Radeon RX 6550M vs AMD Radeon RX 6600 LE Comparison

Head-to-Head Benchmarks

The benchmark data is unambiguous: the AMD Radeon RX 6600 LE dominates the AMD Radeon RX 6550M in every recorded test. In Geekbench OpenCL, the RX 6600 LE scores 69,229 against 42,536 for the RX 6550M, a lead of 62.8%. In Geekbench Vulkan, the RX 6600 LE posts 72,428 versus 50,867, a 42.4% advantage. Both wins belong to the desktop card, giving it a 2-0 sweep in head-to-head comparisons.

These are not marginal differences. The OpenCL gap of 62.8% means the RX 6600 LE delivers roughly three-fifths more performance in that workload. The Vulkan margin, while smaller at 42.4%, still represents a substantial performance tier separation. The RX 6600 LE's average benchmark score of 70,829 reinforces its position, while the RX 6550M averages 46,702.

Context from the nearest rivals clarifies the competitive positioning. The RX 6600 LE sits in the 91st percentile of all GPUs, with nearby competitors including the NVIDIA RTX A3000 Mobile at 70,140 (1% slower) and the AMD Radeon RX 6650M at 71,768 (1.3% faster). The RX 6550M, by contrast, lands in the 85th percentile, with its closest rivals being the Intel Arc A530M at 46,614 (0.2% faster) and the AMD Radeon RX 5600M at 46,601 (0.2% faster). This places the RX 6550M in a lower performance band entirely.

The Vulkan results tell a similar story. The RX 6600 LE's 72,428 score is its stronger benchmark, while the RX 6550M's 50,867 is closer to its OpenCL result. Interestingly, the RX 6550M's Vulkan score exceeds its OpenCL score by 19.6%, suggesting the architecture handles Vulkan more efficiently. The RX 6600 LE shows a smaller uplift of 4.6% from OpenCL to Vulkan, indicating it is already performing near its ceiling across both APIs.

For readers comparing across the full database, the RX 6600 LE's average score places it among mid-range desktop GPUs, while the RX 6550M's average score aligns with entry-level mobile parts. The delta between the two cards, roughly 51.6% based on average scores, is consistent with the individual benchmark deltas. No workload in the recorded data shows the RX 6550M closing the gap.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon RX 6600 LE averages 70,829 across its recorded benchmarks, while the AMD Radeon RX 6550M averages 46,702. The desktop card leads by roughly 51.6% in average performance.

Q: How do the two cards compare in their best benchmark results?

A: The RX 6600 LE's best result is 72,428 in Geekbench Vulkan, while the RX 6550M's best is 50,867 in the same test. The RX 6600 LE's best score exceeds the RX 6550M's best by 42.4%.

Q: What are the closest rivals for each GPU?

A: For the RX 6600 LE, the closest rival is the NVIDIA RTX A3000 Mobile at 70,140 (1% slower), followed by the AMD Radeon RX 6650M at 71,768 (1.3% faster). For the RX 6550M, the Intel Arc A530M at 46,614 (0.2% faster) and the AMD Radeon RX 5600M at 46,601 (0.2% faster) are nearly tied.

Q: Which GPU has the higher percentile ranking?

A: The RX 6600 LE ranks in the 91st percentile of all GPUs, while the RX 6550M ranks in the 85th percentile. This six-percentile gap reflects the substantial performance difference.

Q: Is the RX 6550M competitive in any benchmark?

A: In the recorded data, no. The RX 6550M loses both Geekbench OpenCL and Geekbench Vulkan tests, with its smallest deficit being 42.4% in Vulkan. Its closest recorded result is still a significant margin behind.

Q: How does the gap vary between OpenCL and Vulkan?

A: The RX 6600 LE leads by 62.8% in OpenCL but only 42.4% in Vulkan. The Vulkan gap is smaller because the RX 6550M's Vulkan score (50,867) improves more over its OpenCL score (42,536) than the RX 6600 LE's does.

Architecture Differences

Both cards share the RDNA 2.0 architecture and AMD as the manufacturer, but they diverge significantly in chip design. The RX 6600 LE uses the Navi 23 chip built on a 7 nm process at TSMC, while the RX 6550M uses the Navi 24 chip on a 6 nm process, also from TSMC. The 7 nm node is the older process, yet the RX 6600 LE integrates far more hardware.

The RX 6600 LE packs 11,060 million transistors on a 237 mm² die, giving a transistor density of 46.7 million per mm². The RX 6550M, despite the smaller 6 nm node, contains only 5,400 million transistors on a 107 mm² die, with a density of 50.5 million per mm². The RX 6600 LE's die is more than twice the size, and its transistor count is more than double. The higher density of the RX 6550M reflects the newer process, but the absolute scale favors the desktop part.

The execution resources differ sharply. The RX 6600 LE has 1,792 shading units, 112 texture mapping units, 64 render output units, and 28 ray tracing cores. The RX 6550M has 1,024 shading units, 64 TMUs, 32 ROPs, and 16 ray tracing cores. The RX 6600 LE thus offers 75% more shading units, 75% more TMUs, double the ROPs, and 75% more ray tracing cores. These are not incremental differences; they represent a fundamentally larger GPU.

The memory subsystems are equally divergent. The RX 6600 LE features 8 GB of GDDR6 on a 128-bit bus, delivering 224.0 GB/s of bandwidth. The RX 6550M has 4 GB of GDDR6 on a 64-bit bus, providing 144.0 GB/s. The RX 6600 LE offers double the memory capacity, double the bus width, and 55.6% more bandwidth. This has direct implications for texture-heavy workloads and higher resolutions.

The RX 6600 LE is a desktop discrete card with a dual-slot design, a single 8-pin power connector, and a 300 W suggested PSU. The RX 6550M is an integrated GPU (IGP) with no power connectors, designed for portable devices. The RX 6600 LE uses PCIe 4.0 x8, while the RX 6550M uses PCIe 4.0 x4, halving the available interface bandwidth for the mobile part.

Specification Differences

Clock speeds show a notable inversion. The RX 6550M runs at a 2000 MHz base clock and 2840 MHz boost, while the RX 6600 LE runs at 1626 MHz base and 2495 MHz boost. The mobile chip is clocked higher, but that does not compensate for its smaller execution engine. The game clock also favors the RX 6550M at 2560 MHz versus 2045 MHz for the RX 6600 LE.

Memory clocks follow the same pattern. The RX 6550M's memory runs at 2250 MHz (18 Gbps effective), while the RX 6600 LE's memory runs at 1750 MHz (14 Gbps effective). Despite the higher memory clock, the RX 6550M's narrower 64-bit bus limits its bandwidth to 144.0 GB/s, well below the RX 6600 LE's 224.0 GB/s.

Pixel and texture rates reflect the resource disparity. The RX 6600 LE achieves 159.7 GPixel/s and 279.4 GTexel/s, while the RX 6550M reaches 90.88 GPixel/s and 181.8 GTexel/s. The RX 6600 LE leads by 75.7% in pixel throughput and 53.7% in texture throughput. Floating-point performance follows: the RX 6600 LE delivers 8.942 TFLOPS FP32 and 17.88 TFLOPS FP16, versus 5.816 TFLOPS FP32 and 11.63 TFLOPS FP16 for the RX 6550M.

Power consumption differs substantially. The RX 6600 LE has a TDP of 132 W, while the RX 6550M has a TDP of 80 W. This makes the mobile part more power-efficient per watt, but the desktop card still wins on absolute performance. The RX 6600 LE measures 190 mm in length, 110 mm in height, and 40 mm in width, while the RX 6550M has no recorded dimensions due to its integrated nature.

Display outputs also differ. The RX 6600 LE provides 1x HDMI 2.1 and 3x DisplayPort 1.4a, while the RX 6550M's outputs are listed as portable device dependent. Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 6600 LE belongs to the Navi II generation (RX 6000 series), while the RX 6550M belongs to the Navi Mobile generation (RX 6000M series).

The Verdict

The recorded data supports a clear verdict: the AMD Radeon RX 6600 LE is the superior GPU. It wins every benchmark, has a higher average score, sits in a higher percentile, and offers double the memory capacity. The RX 6550M's advantages are limited to clock speeds, process node, and power efficiency, none of which translate to a benchmark victory.

For users who prioritize raw performance, the RX 6600 LE is the only choice. Its 62.8% OpenCL lead and 42.4% Vulkan lead are decisive. The desktop card's 91st percentile ranking versus the mobile card's 85th percentile confirms its higher tier. The RX 6600 LE's nearest rivals are all within 1.4% of its average score, placing it in a competitive mid-range bracket. The RX 6550M's rivals are similarly clustered, but at a much lower performance level.

The RX 6550M is not a bad GPU per se; its 85th percentile ranking puts it above the majority of GPUs. But against the RX 6600 LE, it is outclassed in every measurable way. The 8 GB versus 4 GB memory difference alone is decisive for modern workloads, and the bandwidth gap of 224.0 GB/s versus 144.0 GB/s compounds the issue. The mobile card's higher clocks (2840 MHz boost versus 2495 MHz) are a classic case of a smaller chip running faster but still losing to a larger chip with more execution units.

The verdict is straightforward: pick the RX 6600 LE for performance, pick the RX 6550M only if the integrated form factor is a hard requirement. The data does not support any other conclusion.

Where Each One Wins

The RX 6600 LE wins in every recorded benchmark category. Its OpenCL score of 69,229 and Vulkan score of 72,428 both exceed the RX 6550M's best effort of 50,867. The desktop card's 1792 shading units and 28 ray tracing cores give it advantages in compute-heavy and ray-traced workloads, though the database does not include specific ray tracing tests. Its 224.0 GB/s bandwidth and 8 GB capacity make it better suited for high-resolution textures and larger working sets.

The RX 6550M's strengths lie outside the benchmark results. Its 80 W TDP is significantly lower than the RX 6600 LE's 132 W, making it the more power-efficient option. Its 6 nm process node and higher clock speeds (2000 MHz base, 2840 MHz boost) suggest it can achieve competitive performance per watt, even if absolute performance lags. The IGP form factor means it requires no power connectors and fits in portable devices, where the RX 6600 LE's dual-slot, 190 mm length design cannot be accommodated.

In terms of nearest rivals, the RX 6600 LE competes with the NVIDIA RTX A3000 Mobile (1% slower) and the AMD Radeon RX 6650M (1.3% faster), placing it in a narrow performance band. The RX 6550M competes with the Intel Arc A530M (0.2% faster) and the AMD Radeon RX 5600M (0.2% faster), showing it is closely matched with entry-level mobile GPUs. This context shows that neither card is an outlier; both are competitive within their respective tiers.

For users building a desktop system with a discrete GPU, the RX 6600 LE is the clear winner across all metrics. For users needing integrated graphics in a portable device, the RX 6550M is the only option between the two, and its performance is respectable for its class. The use cases do not overlap: the RX 6600 LE targets performance-oriented desktops, while the RX 6550M targets power-conscious laptops. The benchmark data confirms that the desktop card delivers far more performance, but the mobile card delivers far more efficiency per watt and physical flexibility.