AMD Radeon RX 6550M vs NVIDIA RTX A1000 Mobile Comparison

The NVIDIA RTX A1000 Mobile and AMD Radeon RX 6550M are two mobile graphics solutions that land in the same performance tier, separated by a razor-thin 2.2% average score margin. The data reveals a split personality: NVIDIA’s Ampere-based chip dominates OpenCL workloads, while AMD’s RDNA 2.0 part turns the tables in Vulkan. Both sit at the 85th percentile of all GPUs, yet they achieve that status through fundamentally different architectural philosophies and clock strategies.

Where Each One Wins

The benchmark suite paints a clear picture of workload-specific superiority. The NVIDIA RTX A1000 Mobile takes the Geekbench OpenCL test with a score of 48703, beating the AMD Radeon RX 6550M’s 42536 by a substantial 14.5%. This is the A1000 Mobile’s home turf. OpenCL workloads often stress raw compute throughput and driver optimization for general-purpose tasks, and the NVIDIA part’s 2048 shading units give it a mathematical advantage in parallel integer and floating-point operations. For users running OpenCL-accelerated applications—think content creation tools, scientific compute, or encoding tasks—the data suggests the A1000 Mobile is the safer bet.

Flip the API, and the story reverses dramatically. In Geekbench Vulkan, the AMD Radeon RX 6550M scores 50867, outpacing the NVIDIA RTX A1000 Mobile’s 46782 by 8%. Vulkan is a low-overhead, draw-call-heavy API that favors architectures with high clock speeds and efficient geometry processing. The RX 6550M’s boost clock of 2840 MHz, combined with a game clock of 2560 MHz, allows it to push through Vulkan’s command buffers with less latency. Gamers and developers targeting Vulkan-based engines will find the AMD part consistently faster in this specific metric.

The head-to-head record is perfectly balanced at one win apiece. This parity is reflected in the average benchmark scores: the A1000 Mobile averages 47743, while the RX 6550M averages 46702. The delta between them—just 2.2% in NVIDIA’s favor—is well within run-to-run variance for many workloads. The practical takeaway is that neither card is a universal champion. The A1000 Mobile wins where compute density matters; the RX 6550M wins where clock speed and API efficiency dominate.

Architecture Differences

The two GPUs come from opposing design philosophies. NVIDIA’s RTX A1000 Mobile uses the GA107 chip on an 8 nm Samsung process, packing 8,700 million transistors into a 200 mm² die. That yields a transistor density of 43.5 million per square millimeter. AMD’s RX 6550M, by contrast, uses the Navi 24 chip on TSMC’s 6 nm node, with 5,400 million transistors in a much smaller 107 mm² die—giving it a higher density of 50.5 million per square millimeter. The smaller, denser AMD chip runs significantly hotter clocks: a 2000 MHz base and 2840 MHz boost, versus NVIDIA’s conservative 630 MHz base and 1140 MHz boost.

Shader configuration diverges sharply. The A1000 Mobile fields 2048 shading units, 64 TMUs, and 32 ROPs, while the RX 6550M has half the shading units at 1024, but matches 64 TMUs and 32 ROPs. Both cards include 16 ray tracing cores, but NVIDIA adds 64 tensor cores—hardware AMD’s chip lacks entirely. This explains the FP16 performance gap: NVIDIA’s A1000 Mobile delivers 4.669 TFLOPS FP16 (at a 1:1 ratio with FP32), while the RX 6550M delivers 11.63 TFLOPS FP16 (at a 2:1 ratio). The AMD part’s FP32 throughput is higher at 5.816 TFLOPS versus 4.669 TFLOPS, despite the shader count deficit, purely due to clock speed.

Memory subsystems also differ. Both use 4 GB of GDDR6, but the A1000 Mobile runs a 128-bit bus with 176.0 GB/s bandwidth, while the RX 6550M uses a 64-bit bus with 144.0 GB/s. NVIDIA’s memory clock is 1375 MHz (11 Gbps effective); AMD’s is 2250 MHz (18 Gbps effective). The wider bus gives NVIDIA the bandwidth advantage, but AMD’s faster memory clock partially compensates. Power envelopes diverge too: the A1000 Mobile is rated at 60 W TDP, the RX 6550M at 80 W. Both use PCIe 4.0, but NVIDIA connects via x8 lanes while AMD uses x4, which could matter for external GPU enclosures or bandwidth-sensitive tasks.

Head-to-Head Benchmarks

The Geekbench OpenCL result is the A1000 Mobile’s statement win. Its score of 48703 versus 42536 for the RX 6550M represents a 14.5% margin—the largest performance gap in either direction across the two tests. This is not a marginal victory; it is a decisive lead that suggests NVIDIA’s driver stack and compute architecture are better optimized for OpenCL’s execution model. The A1000 Mobile’s 2048 shading units, each capable of independent FP32 work, allow it to saturate parallel workloads more effectively than AMD’s clock-boosted but shader-starved configuration.

The Vulkan result is equally emphatic in the opposite direction. AMD’s RX 6550M hits 50867, beating the A1000 Mobile’s 46782 by 8%. This is particularly notable because Vulkan is the API of choice for modern game engines and emulators. The RX 6550M’s 2840 MHz boost clock is the obvious differentiator here—higher clocks reduce latency on each draw call, and Vulkan’s low-overhead design rewards exactly that. The 8% delta in Vulkan nearly offsets the 14.5% deficit in OpenCL, which is why the average scores end up so close.

Looking at the nearest rivals provides additional context. The A1000 Mobile’s 2.2% average score lead over the RX 6550M places it just 1.5% behind the AMD Radeon RX 6800 XT, a desktop-class card with a much higher power budget. The RX 6550M, meanwhile, sits only 0.2% ahead of the Intel Arc A530M and AMD Radeon RX 5600M, indicating a tightly clustered mid-range mobile segment. Both cards also trail the NVIDIA RTX A2000 by 1.4% and the RTX 5880 Ada Generation by 1.6% on the AMD side’s rival list, reinforcing that these are comparable performers with no clear tier separation.

FAQ

Q: Which GPU is faster overall?

A: The average benchmark scores show the NVIDIA RTX A1000 Mobile at 47743 and the AMD Radeon RX 6550M at 46702, a 2.2% lead for NVIDIA. However, this is a single average figure; the two cards split the individual tests exactly one win each.

Q: Why does the AMD RX 6550M win in Vulkan but lose in OpenCL?

A: The RX 6550M’s Vulkan score of 50867 beats the A1000 Mobile’s 46782 by 8%, likely due to its much higher boost clock of 2840 MHz versus 1140 MHz. In OpenCL, the A1000 Mobile’s 2048 shading units outnumber the RX 6550M’s 1024, giving it a 14.5% win with 48703 versus 42536.

Q: Do these GPUs have the same memory configuration?

A: No. Both have 4 GB of GDDR6, but the A1000 Mobile uses a 128-bit bus with 176.0 GB/s bandwidth, while the RX 6550M uses a 64-bit bus with 144.0 GB/s. The NVIDIA card’s wider bus provides higher bandwidth.

Q: Which GPU has better ray tracing hardware?

A: Both cards have 16 ray tracing cores. The difference is that the NVIDIA RTX A1000 Mobile also includes 64 tensor cores, which the AMD Radeon RX 6550M lacks entirely.

Q: What are the power consumption differences?

A: The NVIDIA RTX A1000 Mobile is rated at 60 W TDP, while the AMD Radeon RX 6550M is rated at 80 W TDP. The AMD part draws more power but also runs significantly higher clock speeds.

Q: How do these compare to other mobile GPUs in the same tier?

A: The A1000 Mobile is 2.4% ahead of the Intel Arc A530M and 2.5% ahead of the AMD Radeon RX 5600M. The RX 6550M is 0.2% ahead of both the Arc A530M and RX 5600M, and 1.4% ahead of the NVIDIA RTX A2000.

Specification Differences

The two GPUs diverge on nearly every major specification. The manufacturing process differs: NVIDIA uses an 8 nm Samsung node, while AMD uses a 6 nm TSMC node. Transistor counts are 8,700 million for the A1000 Mobile versus 5,400 million for the RX 6550M, with die sizes of 200 mm² and 107 mm² respectively. Clock speeds are vastly different—the A1000 Mobile runs at 630 MHz base and 1140 MHz boost, while the RX 6550M runs at 2000 MHz base, 2560 MHz game, and 2840 MHz boost.

Shading unit counts are 2048 for NVIDIA and 1024 for AMD, though TMU and ROP counts match at 64 and 32 respectively. Both have 16 ray tracing cores, but only NVIDIA has 64 tensor cores. FP32 performance favors AMD at 5.816 TFLOPS versus 4.669 TFLOPS; FP16 performance also favors AMD at 11.63 TFLOPS versus 4.669 TFLOPS, due to AMD’s 2:1 FP16 ratio versus NVIDIA’s 1:1. Memory bandwidth is higher on NVIDIA at 176.0 GB/s versus 144.0 GB/s, despite AMD’s faster 18 Gbps effective memory speed versus NVIDIA’s 11 Gbps. TDP differs at 60 W for NVIDIA and 80 W for AMD. PCIe interface is x8 for NVIDIA and x4 for AMD. The A1000 Mobile is end-of-life with a 2022 release date; the RX 6550M is active with a 2023 release date.