AMD Radeon RX 6600 LE vs NVIDIA RTX A1000 Mobile Comparison

Head-to-Head Benchmarks

The head-to-head data is decisively one-sided. In the Geekbench OpenCL test, the AMD Radeon RX 6600 LE records a score of 69,229 against the NVIDIA RTX A1000 Mobile's 48,703. That is a 42.1% advantage for the AMD part. The Vulkan test shows an even wider gap: AMD scores 72,428, NVIDIA scores 46,782, and the delta expands to 54.8%. Across the two recorded benchmarks, the AMD Radeon RX 6600 LE wins both, giving it a 2-0 record in this matchup.

Placing these scores in context clarifies the magnitude. The AMD card sits at the 91st percentile among all GPUs in the database, with an average benchmark score of 70,829. Its nearest rivals include the NVIDIA RTX A3000 Mobile at 70,140 (just 1% behind), the AMD Radeon RX 6650M at 71,768 (1.3% ahead), and the AMD Radeon Pro WX 8200 at 69,870 (1.4% behind). The RX 6600 LE is essentially trading blows with mobile workstation parts that sit in a higher performance class.

The NVIDIA RTX A1000 Mobile, by contrast, lands at the 85th percentile with an average score of 47,743. Its nearest rivals are a different tier: the AMD Radeon RX 6800 XT at 48,477 (1.5% ahead), the AMD Radeon RX 6550M at 46,702 (2.2% behind), the Intel Arc A530M at 46,614 (2.4% behind), and the AMD Radeon RX 5600M at 46,601 (2.5% behind). The RTX A1000 Mobile is competitive within its own bracket, but that bracket sits roughly 32% below the RX 6600 LE's average score (47,743 versus 70,829). The data suggests these two GPUs are not really competing for the same workload tier, despite both being mobile-oriented parts.

The Vulkan delta of 54.8% is particularly striking because it outpaces the OpenCL delta of 42.1%. This implies the AMD architecture extracts relatively more performance in the Vulkan API than it does in OpenCL when compared head-to-head. The NVIDIA part does not close the gap in either API, but the margin shifts by over 12 percentage points depending on the test.

Architecture Differences

The two GPUs come from fundamentally different design philosophies. AMD's Radeon RX 6600 LE uses the Navi 23 chip built on RDNA 2.0 architecture, fabricated on a 7 nm process at TSMC. NVIDIA's RTX A1000 Mobile uses the GA107 chip built on Ampere architecture, fabricated on an 8 nm process at Samsung. The process node difference is small in absolute terms but meaningful: AMD's 7 nm process packs 11,060 million transistors into a 237 mm² die, yielding a transistor density of 46.7 million per mm². NVIDIA's 8 nm process fits 8,700 million transistors into a 200 mm² die, for a density of 43.5 million per mm². AMD therefore has both a raw transistor advantage (11,060 million versus 8,700 million) and a density advantage.

The compute configurations diverge sharply. The RX 6600 LE has 1,792 shading units, 112 texture mapping units, 64 ROPs, and 28 ray tracing cores. The RTX A1000 Mobile counters with 2,048 shading units, 64 TMUs, 32 ROPs, 16 ray tracing cores, and adds 64 tensor cores. NVIDIA has more shading units on paper, but the AMD part has nearly double the texture units and double the ROPs. The ray tracing core count also favors AMD (28 versus 16). The tensor cores on the NVIDIA side are the notable exclusive feature, enabling AI-accelerated workloads that the AMD part cannot match through dedicated hardware.

Memory configurations tell a similar story of divergence. The AMD card carries 8 GB of GDDR6 across a 128-bit bus, producing 224.0 GB/s of bandwidth. The NVIDIA card has 4 GB of GDDR6 across the same 128-bit bus width, but memory clocks of 1375 MHz (11 Gbps effective) yield only 176.0 GB/s. The AMD part offers double the capacity and roughly 27% more bandwidth. Clock speeds reinforce the gap: the RX 6600 LE runs at a 1626 MHz base and 2495 MHz boost, while the RTX A1000 Mobile runs at a much lower 630 MHz base and 1140 MHz boost. The NVIDIA part appears power-constrained by design, with a 60 W TDP versus AMD's 132 W TDP.

The resulting throughput figures are dramatic. The RX 6600 LE delivers 8.942 TFLOPS of FP32 compute, 17.88 TFLOPS of FP16 (via 2:1 ratio), a pixel rate of 159.7 GPixel/s, and a texture rate of 279.4 GTexel/s. The RTX A1000 Mobile delivers 4.669 TFLOPS of FP32 and the same 4.669 TFLOPS of FP16 (1:1 ratio), with a pixel rate of 36.48 GPixel/s and texture rate of 72.96 GTexel/s. The FP32 gap is roughly 1.9x in AMD's favor, but the FP16 gap is nearly 3.8x because NVIDIA's consumer-oriented Ampere implementation does not double-rate FP16. The pixel rate gap is even larger at 4.4x, reflecting the ROP and clock differences.

Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API-level compatibility is identical. The physical and power profiles differ: AMD is a dual-slot card requiring a single 8-pin connector and a 300 W suggested PSU, while NVIDIA is an IGP (integrated graphics processor) with no power connectors and no suggested PSU listed. AMD's dimensions are 190 mm by 110 mm by 40 mm, while NVIDIA lists no dimensions, consistent with a mobile soldered part.

FAQ

Q: Which GPU is faster in the recorded benchmarks?

A: The AMD Radeon RX 6600 LE wins both recorded benchmarks. It scores 69,229 in Geekbench OpenCL versus 48,703 for the NVIDIA RTX A1000 Mobile, a 42.1% lead. In Geekbench Vulkan, AMD scores 72,428 versus 46,782, a 54.8% lead.

Q: How do these GPUs rank against all other GPUs in the database?

A: The RX 6600 LE sits at the 91st percentile with an average benchmark score of 70,829. The RTX A1000 Mobile sits at the 85th percentile with an average score of 47,743.

Q: Does the NVIDIA GPU have any hardware feature the AMD GPU lacks?

A: Yes, the RTX A1000 Mobile includes 64 tensor cores, which the RX 6600 LE does not have. These tensor cores are designed for AI-accelerated workloads. The AMD part, however, has more ray tracing cores (28 versus 16).

Q: What are the memory capacity and bandwidth differences?

A: The RX 6600 LE has 8 GB of GDDR6 with 224.0 GB/s bandwidth. The RTX A1000 Mobile has 4 GB of GDDR6 with 176.0 GB/s bandwidth. Both use a 128-bit bus, but the AMD card has higher effective memory speed (14 Gbps versus 11 Gbps).

Q: How do the power requirements compare?

A: The RX 6600 LE has a 132 W TDP, is a dual-slot card, requires one 8-pin power connector, and suggests a 300 W PSU. The RTX A1000 Mobile has a 60 W TDP, is an IGP with no power connectors, and lists no suggested PSU.

Q: Which GPU has a higher transistor count?

A: The RX 6600 LE has 11,060 million transistors on a 237 mm² die. The RTX A1000 Mobile has 8,700 million transistors on a 200 mm² die. The AMD part also has a higher transistor density at 46.7 million per mm² versus 43.5 million per mm².

Specification Differences

The following fields differ between the two parts:

• Architecture: RDNA 2.0 (AMD) versus Ampere (NVIDIA)
• Chip: Navi 23 versus GA107
• Process node: 7 nm (TSMC) versus 8 nm (Samsung)
• Transistors: 11,060 million versus 8,700 million
• Die size: 237 mm² versus 200 mm²
• Transistor density: 46.7M / mm² versus 43.5M / mm²
• Base clock: 1626 MHz versus 630 MHz
• Boost clock: 2495 MHz versus 1140 MHz
• Memory clock: 1750 MHz (14 Gbps effective) versus 1375 MHz (11 Gbps effective)
• Memory size: 8 GB versus 4 GB
• Memory bandwidth: 224.0 GB/s versus 176.0 GB/s
• Shading units: 1792 versus 2048
• TMUs: 112 versus 64
• ROPs: 64 versus 32
• RT cores: 28 versus 16
• Tensor cores: None versus 64
• Pixel rate: 159.7 GPixel/s versus 36.48 GPixel/s
• Texture rate: 279.4 GTexel/s versus 72.96 GTexel/s
• FP32: 8.942 TFLOPS versus 4.669 TFLOPS
• FP16: 17.88 TFLOPS (2:1) versus 4.669 TFLOPS (1:1)
• TDP: 132 W versus 60 W
• Slot width: Dual-slot versus IGP
• Power connectors: 1x 8-pin versus None
• Suggested PSU: 300 W versus not listed
• Display outputs: 1x HDMI 2.1, 3x DisplayPort 1.4a versus Portable Device Dependent
• Dimensions: 190 mm x 110 mm x 40 mm versus not listed
• Production status: Active versus End-of-life
• Release date: 2023-12-07 versus 2022-03-29
• Predecessor: Navi versus Quadro Turing-M
• Successor: Navi III versus Ada-MW

The Verdict

The benchmark data points to a clear performance hierarchy. The AMD Radeon RX 6600 LE outperforms the NVIDIA RTX A1000 Mobile by 42.1% in OpenCL and 54.8% in Vulkan. Its average benchmark score of 70,829 places it alongside the NVIDIA RTX A3000 Mobile, AMD Radeon RX 6650M, and AMD Radeon Pro WX 8200, all within 1.4% of each other. The RTX A1000 Mobile's average of 47,743 places it near the AMD Radeon RX 6800 XT, AMD Radeon RX 6550M, Intel Arc A530M, and AMD Radeon RX 5600M, a group whose scores cluster within 2.5% of each other but sit far below the AMD card's group.

The RX 6600 LE also carries twice the VRAM (8 GB versus 4 GB) and higher bandwidth (224.0 GB/s versus 176.0 GB/s), which matters for texture-heavy workloads and larger datasets. Its higher TDP of 132 W versus 60 W reflects a willingness to spend power for performance, which is feasible in a dual-slot card form factor with an external power connector. The RTX A1000 Mobile, as an IGP with no power connector, is designed for constrained environments where power draw is the limiting factor.

The RTX A1000 Mobile's redeeming feature is its 64 tensor cores, which the RX 6600 LE lacks entirely. For workloads that leverage tensor core acceleration, the NVIDIA part has a dedicated hardware path that AMD cannot offer. Its lower 60 W TDP also makes it suitable for systems where the RX 6600 LE's 132 W requirement and 300 W suggested PSU would be impractical.

The production status further separates them: the RX 6600 LE is Active, while the RTX A1000 Mobile is End-of-life. The AMD part also released later (2023-12-07 versus 2022-03-29). For raw compute throughput, memory capacity, and benchmark scores, the AMD Radeon RX 6600 LE is the clear choice. For AI-accelerated tasks in a low-power integrated form factor, the NVIDIA RTX A1000 Mobile is the only option that offers those specific capabilities.

Where Each One Wins

The AMD Radeon RX 6600 LE wins in every measured performance category. It leads in FP32 compute by 8.942 TFLOPS versus 4.669 TFLOPS, a 1.9x margin. Its FP16 advantage is far larger at 17.88 TFLOPS versus 4.669 TFLOPS, a 3.8x margin, because the AMD architecture implements 2:1 FP16 ratio while NVIDIA's Ampere part runs at 1:1. The pixel rate of 159.7 GPixel/s versus 36.48 GPixel/s represents a 4.4x advantage, and the texture rate of 279.4 GTexel/s versus 72.96 GTexel/s is a 3.8x advantage. These are not marginal wins but generational gaps within the same workload types.

The RTX A1000 Mobile wins in power efficiency per the recorded TDP figures, though no efficiency ratio is directly calculated in the data. Its 60 W TDP is less than half of AMD's 132 W, while delivering roughly 53% of the FP32 throughput (4.669 versus 8.942 TFLOPS). It also wins on portability: as an IGP with no power connector and no dimensions listed, it can be integrated into compact mobile devices. The AMD part requires a dual-slot footprint, an 8-pin connector, and a 300 W PSU. The tensor cores are the NVIDIA part's exclusive functional win: no AMD equivalent exists in this comparison.

For users choosing between these two, the decision hinges on form factor and specialized features. The RX 6600 LE is the performance pick, dominating every benchmark and most raw specification categories. The RTX A1000 Mobile is the integration pick, offering tensor core acceleration and a low-power IGP design that fits where the AMD card cannot. The recorded data does not show a single benchmark where the NVIDIA part takes the lead, so any choice in its favor must rest on unmeasured criteria like AI workload support or physical integration constraints.