AMD Radeon RX 6550M vs AMD Radeon RX 6800 XT Comparison

AMD Radeon RX 6800 XT and AMD Radeon RX 6550M are both members of the Radeon RX 6000 series family, yet they occupy opposite ends of the performance spectrum. The data reveals a desktop flagship built for maximum throughput versus a mobile entry-point solution, with benchmark results showing the former leading by triple-digit percentages. This analysis explores the raw numbers, architectural chasms, and practical implications of choosing between a 300-watt desktop behemoth and an 80-watt integrated graphics processor.

Head-to-Head Benchmarks

The head-to-head comparison is stark, with the AMD Radeon RX 6800 XT winning both recorded tests decisively. In Geekbench OpenCL, the desktop card scores 171,304 against the RX 6550M’s 42,536, translating to a 302.7% advantage. This is not a marginal lead; it represents a performance gap where the RX 6800 XT delivers over four times the raw compute throughput in this API. The Vulkan test tells a similar story, albeit with a slightly narrower margin: the RX 6800 XT posts 136,875 points versus 50,867, a 169.1% difference. While the percentage lead shrinks in Vulkan, it still means the desktop part is roughly 2.7 times faster in that workload.

The overall average benchmark scores reinforce this hierarchy. The RX 6800 XT averages 48,477 points across all its tested workloads, while the RX 6550M averages 46,702. Interestingly, despite the massive head-to-head deltas, the average scores are relatively close — a discrepancy explained by the fact that the RX 6550M’s average is computed from only two benchmarks (OpenCL and Vulkan), whereas the RX 6800 XT’s average includes additional tests like 3DMark Steel Nomad, PassMark suites, and Geekbench Metal. Looked at purely through the overlapping benchmarks, the RX 6800 XT is overwhelmingly faster. The 3DMark Steel Nomad DX12 result for the RX 6800 XT (3,689) and its PassMark G3D score (24,980) have no equivalent data for the mobile chip, so those figures cannot be directly compared, but they contribute to the desktop card’s higher absolute compute ceiling.

Contextualizing against rivals, both cards sit at the 85th percentile among all GPUs, meaning each outperforms 85% of the field in their respective benchmark pools. For the RX 6800 XT, its nearest rival is the NVIDIA RTX A1000 Mobile, which scores 47,743 on average — a mere 1.5% behind. The Intel Arc A550M trails by 2.5%, and the NVIDIA GeForce RTX 5070 Ti is 3% behind. For the RX 6550M, the competition is tighter: the Intel Arc A530M scores 46,614 (0.2% ahead), the AMD Radeon RX 5600M scores 46,601 (0.2% ahead), and the NVIDIA RTX A2000 sits at 46,043 (1.4% behind). These rival comparisons suggest that while the RX 6800 XT dominates its mobile counterpart, both GPUs are positioned competitively within their own performance classes.

Architecture Differences

The architectural divide between these two is fundamental. The RX 6800 XT uses the Navi 21 chip built on a 7 nm process, while the RX 6550M uses Navi 24 on a 6 nm node — both from TSMC. The transistor counts tell the story of scale: the desktop chip packs 26,800 million transistors across a 520 mm² die, versus 5,400 million transistors on a 107 mm² die for the mobile part. Transistor density is nearly identical (51.5M/mm² versus 50.5M/mm²), confirming that the performance gap comes from sheer silicon area, not design efficiency.

Core configurations differ by a factor of roughly 4.5. The RX 6800 XT has 4,608 shading units, 288 texture mapping units, and 128 ROPs, while the RX 6550M has 1,024 shading units, 64 TMUs, and 32 ROPs. Ray tracing cores follow the same pattern: 72 on the desktop card versus 16 on the mobile chip. Clock speeds, however, flip the narrative. The RX 6550M runs at a base of 2000 MHz and boosts to 2840 MHz, while the RX 6800 XT sits at 1825 MHz base and 2250 MHz boost. The mobile chip’s higher clocks partially compensate for fewer cores, but not nearly enough to close the gap. The RX 6800 XT’s FP32 throughput is 20.74 TFLOPS versus 5.816 TFLOPS for the RX 6550M.

Memory architecture is another chasm. The RX 6800 XT offers 16 GB of GDDR6 on a 256-bit bus, delivering 512.0 GB/s bandwidth. The RX 6550M has just 4 GB of GDDR6 on a 64-bit bus, yielding 144.0 GB/s. Memory clocks differ too: the desktop card runs at 2000 MHz (16 Gbps effective), while the mobile chip runs at 2250 MHz (18 Gbps effective). The bus width difference is the decisive factor, giving the RX 6800 XT over 3.5 times the memory bandwidth. Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API feature parity exists, but the underlying hardware capabilities diverge sharply.

FAQ

Q: Why is the RX 6800 XT so much faster in Geekbench OpenCL despite the RX 6550M having higher boost clocks?

A: The RX 6800 XT has 4,608 shading units versus 1,024 on the RX 6550M, and a 256-bit memory bus versus 64-bit. Higher clocks (2840 MHz boost) cannot offset a 4.5x core count disadvantage and 3.5x bandwidth deficit, resulting in a 302.7% OpenCL lead.

Q: Are these GPUs in the same performance tier?

A: Both sit at the 85th percentile among all GPUs, but that percentile is computed from different benchmark sets. The RX 6800 XT’s average score is 48,477 against rivals like the RTX A1000 Mobile, while the RX 6550M averages 46,702 against the Arc A530M. Within their respective pools, they are similarly positioned, but the desktop card’s absolute scores are far higher.

Q: Which card has better memory bandwidth for high-resolution textures?

A: The RX 6800 XT, with 512.0 GB/s bandwidth on a 256-bit bus, vastly outperforms the RX 6550M’s 144.0 GB/s on a 64-bit bus. The mobile chip’s higher memory clock (18 Gbps effective versus 16 Gbps) does not compensate for the narrower interface.

Q: Do both cards support the same API features?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, meaning feature-level parity for modern games. However, the RX 6800 XT’s 72 RT cores versus 16 on the RX 6550M means ray tracing performance will be drastically different.

Q: What is the physical size difference?

A: The RX 6800 XT is a dual-slot card measuring 267 mm in length, 120 mm in height, and 50 mm in width, requiring two 8-pin power connectors and a 700 W suggested PSU. The RX 6550M is an IGP (integrated graphics processor) with no dimensions listed, no power connectors, and an 80 W TDP.

Q: Which GPU is newer?

A: The RX 6550M was released on 2023-01-03, while the RX 6800 XT launched on 2020-10-27. Despite being newer, the mobile chip is in the same RDNA 2.0 architecture and is significantly less powerful.

The Verdict

The data is unambiguous: the AMD Radeon RX 6800 XT is the superior performer in every measured metric, with a 302.7% lead in OpenCL and a 169.1% lead in Vulkan. Its 16 GB memory, 512.0 GB/s bandwidth, and 20.74 TFLOPS FP32 throughput place it in a completely different performance class than the RX 6550M’s 4 GB memory, 144.0 GB/s bandwidth, and 5.816 TFLOPS. The RX 6800 XT also has a higher average benchmark score (48,477 versus 46,702) and a higher absolute score in every overlapping test.

However, the verdict is not simply “buy the faster one.” The RX 6800 XT is an end-of-life desktop part with a 300 W TDP, requiring a 700 W power supply and dual-slot chassis space. The RX 6550M is an active mobile IGP with an 80 W TDP, no power connectors, and is portable-device dependent for outputs. Users constrained to a laptop form factor have no choice but the RX 6550M. For desktop users, the RX 6800 XT offers launch MSRP of 649 USD (stated once here) and dominates in raw compute. The RX 6550M’s only advantages are its newer process node (6 nm versus 7 nm), higher clock speeds (2840 MHz boost versus 2250 MHz), and lower power draw — none of which translate to better benchmark scores.

Specification Differences

| Specification | AMD Radeon RX 6800 XT | AMD Radeon RX 6550M |

|---|---|---|

| Chip | Navi 21 | Navi 24 |

| Process Node | 7 nm | 6 nm |

| Transistors | 26,800 million | 5,400 million |

| Die Size | 520 mm² | 107 mm² |

| Base Clock | 1825 MHz | 2000 MHz |

| Boost Clock | 2250 MHz | 2840 MHz |

| Game Clock | 2015 MHz | 2560 MHz |

| Memory Clock | 2000 MHz (16 Gbps effective) | 2250 MHz (18 Gbps effective) |

| Memory Size | 16 GB | 4 GB |

| Memory Bus Width | 256 bit | 64 bit |

| Memory Bandwidth | 512.0 GB/s | 144.0 GB/s |

| Shading Units | 4608 | 1024 |

| TMUs | 288 | 64 |

| ROPs | 128 | 32 |

| RT Cores | 72 | 16 |

| Pixel Rate | 288.0 GPixel/s | 90.88 GPixel/s |

| Texture Rate | 648.0 GTexel/s | 181.8 GTexel/s |

| FP32 | 20.74 TFLOPS | 5.816 TFLOPS |

| FP16 | 41.47 TFLOPS (2:1) | 11.63 TFLOPS (2:1) |

| TDP | 300 W | 80 W |

| Slot Width | Dual-slot | IGP |

| Power Connectors | 2x 8-pin | None |

| Suggested PSU | 700 W | None |

| Bus Interface | PCIe 4.0 x16 | PCIe 4.0 x4 |

| Display Outputs | 1x HDMI 2.1, 2x DisplayPort 1.4a, 1x USB Type-C | Portable Device Dependent |

| Production Status | End-of-life | Active |

| Release Date | 2020-10-27 | 2023-01-03 |

| Launch MSRP | 649 USD | None |

Where Each One Wins

The AMD Radeon RX 6800 XT wins in every benchmark category where both have data. In Geekbench OpenCL, it scores 171,304 versus 42,536, and in Geekbench Vulkan, it scores 136,875 versus 50,867. Its additional benchmark results — 3DMark Steel Nomad DX12 (3,689), Geekbench Metal (181,337), PassMark G3D (24,980), and PassMark GPU Compute (13,245) — have no direct RX 6550M equivalents, but they demonstrate broad workload coverage. The desktop card also wins on memory capacity (16 GB versus 4 GB), bandwidth (512.0 GB/s versus 144.0 GB/s), and raw compute (20.74 TFLOPS versus 5.816 TFLOPS). It is the clear choice for 4K gaming, compute-heavy tasks, and any workload demanding large framebuffers or high texture throughput.

The AMD Radeon RX 6550M wins in portability and efficiency. Its 80 W TDP versus 300 W means it generates far less heat and requires no external power connectors, making it suitable for thin-and-light laptops. Its higher boost clock (2840 MHz versus 2250 MHz) and newer 6 nm process node suggest better power-per-clock efficiency, though the data shows this does not translate to higher scores. The mobile chip also wins on physical footprint — it is an IGP with no dimensions, fitting directly into a laptop motherboard, whereas the RX 6800 XT occupies a 267 mm dual-slot card. For users who need a discrete-GPU-class experience in a portable device, the RX 6550M is the only option. For anyone building or upgrading a desktop, the RX 6800 XT wins decisively on every measurable performance metric, despite its older release date and end-of-life status. The two GPUs overlap only in API support and architecture family; everywhere else, they serve entirely different markets.