AMD Radeon RX 6600 LE vs NVIDIA N1 16SM Comparison

The Verdict

The recorded data presents a stark contrast between these two GPUs. The AMD Radeon RX 6600 LE is a fully benchmarked, active desktop graphics card with a 91st percentile ranking among all GPUs and an average benchmark score of 70,829. The NVIDIA N1 16SM, by contrast, is an integrated graphics processor (IGP) with no recorded benchmarks, an average score of 0, and a 50th percentile ranking. Based strictly on the database, the RX 6600 LE is the only one of the pair with measurable graphics performance, making it the clear choice for any task requiring rendered output. The N1 16SM, with its 128 GB of unified LPDDR5X memory and Blackwell 2.0 architecture, is positioned as a different class of processor entirely, one whose graphics capability is not quantified in the available data. For users who need a discrete graphics solution with proven scores, the RX 6600 LE is the only viable pick. For those who need a processor with a massive memory pool and integrated graphics, the N1 16SM exists, but its performance cannot be verified from the database.

Architecture Differences

The two processors come from different manufacturers and different architectural generations. The AMD Radeon RX 6600 LE uses the Navi 23 chip built on RDNA 2.0 architecture, belonging to the Navi II (RX 6000) generation. It is fabricated by TSMC on a 7 nm process node, with 11,060 million transistors on a 237 mm² die, giving a transistor density of 46.7M per mm². The NVIDIA N1 16SM uses the GB20B chip based on Blackwell 2.0 architecture, from the Blackwell IGP (N1x) generation. It is also fabricated by TSMC but on a 5 nm process node. Its transistor count is unknown, though its die size is listed as 382 mm².

The RX 6600 LE is a discrete, dual-slot graphics card with a 1x 8-pin power connector and a suggested PSU of 300 W. The N1 16SM is an IGP with no power connectors and no slot width beyond the integrated form factor. The bus interfaces differ as well: the RX 6600 LE uses PCIe 4.0 x8, while the N1 16SM uses PCIe 5.0 x16.

Feature support also diverges sharply. The RX 6600 LE supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and includes 28 ray tracing cores. The N1 16SM reports N/A for DirectX, OpenGL, and Vulkan in the database, though it does list 16 ray tracing cores and 64 tensor cores. The RX 6600 LE lists no tensor cores. The N1 16SM has a higher shading unit count at 2,048 versus 1,792 for the AMD part, and more TMUs at 128 versus 112, but far fewer ROPs at 24 versus 64.

Clock behavior differs fundamentally. The RX 6600 LE has a base clock of 1626 MHz, a game clock of 2045 MHz, and a boost clock of 2495 MHz. The N1 16SM has a base clock of 741 MHz and a boost clock of 2346 MHz, with no game clock listed. The AMD card's memory runs at 1750 MHz with 14 Gbps effective, while the NVIDIA IGP's memory runs at 1067 MHz with 8.5 Gbps effective.

Where Each One Wins

The AMD Radeon RX 6600 LE wins in every measurable graphics benchmark category because it is the only one of the two with recorded scores. It has two benchmark entries: a Geekbench OpenCL score of 69,229 and a Geekbench Vulkan score of 72,428. Its average benchmark score is 70,829. The NVIDIA N1 16SM has no benchmark entries at all, so there are no wins to attribute to it in the database.

The RX 6600 LE also wins on pixel throughput. Its pixel rate is 159.7 GPixel/s, versus 56.30 GPixel/s for the N1 16SM. In texture throughput, the AMD card delivers 279.4 GTexel/s, while the NVIDIA part delivers 300.3 GTexel/s, which gives the N1 16SM a narrow advantage in that single metric. In FP32 compute, the RX 6600 LE produces 8.942 TFLOPS, and the N1 16SM produces 9.609 TFLOPS, another edge for the NVIDIA part. FP16 compute is more complicated: the RX 6600 LE achieves 17.88 TFLOPS with a 2:1 ratio, while the N1 16SM achieves 9.609 TFLOPS with a 1:1 ratio.

The N1 16SM wins decisively on memory capacity and bandwidth. It has 128 GB of LPDDR5X memory on a 256-bit bus, delivering 273.2 GB/s of bandwidth. The RX 6600 LE has 8 GB of GDDR6 memory on a 128-bit bus, with 224.0 GB/s of bandwidth. The NVIDIA part also has tensor cores (64) where the AMD part has none.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon RX 6600 LE has an average benchmark score of 70,829. The NVIDIA N1 16SM has an average benchmark score of 0, with no recorded benchmarks.

Q: What are the benchmark scores for the RX 6600 LE?

A: The RX 6600 LE scores 69,229 in Geekbench OpenCL and 72,428 in Geekbench Vulkan.

Q: How much memory does each processor have?

A: The RX 6600 LE has 8 GB of GDDR6 memory on a 128-bit bus. The N1 16SM has 128 GB of LPDDR5X memory on a 256-bit bus.

Q: Which processor has a higher boost clock?

A: The RX 6600 LE has a boost clock of 2495 MHz. The N1 16SM has a boost clock of 2346 MHz.

Q: What is the process node for each chip?

A: The RX 6600 LE uses a 7 nm process node. The N1 16SM uses a 5 nm process node. Both are fabricated by TSMC.

Q: Does the N1 16SM support DirectX, OpenGL, or Vulkan?

A: The database lists DirectX, OpenGL, and Vulkan support as N/A for the N1 16SM. The RX 6600 LE supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Head-to-Head Benchmarks

There are no direct head-to-head benchmark entries in the database for these two parts. The wins tally shows 0 for both. However, the available individual benchmark data allows for a comparison of measurable performance.

The RX 6600 LE's Geekbench OpenCL score of 69,229 and Vulkan score of 72,428 produce an average of 70,829. This places it in the 91st percentile among all GPUs. Its nearest rivals in the database include the NVIDIA RTX A3000 Mobile with an average score of 70,140 (a 1% difference), the NVIDIA Quadro P6000 with 69,986 (1.2% difference), the AMD Radeon RX 6650M with 71,768 (a -1.3% difference), and the AMD Radeon Pro WX 8200 with 69,870 (1.4% difference). The RX 6600 LE sits slightly above the RTX A3000 Mobile, Quadro P6000, and Pro WX 8200, and slightly below the RX 6650M. The N1 16SM has no benchmark scores and no nearest rivals, so it cannot be positioned relative to any other GPU in the database.

In compute throughput, the N1 16SM leads in FP32 with 9.609 TFLOPS versus 8.942 TFLOPS for the RX 6600 LE, a difference of roughly 0.667 TFLOPS. In FP16, the RX 6600 LE leads with 17.88 TFLOPS (2:1 ratio) versus 9.609 TFLOPS (1:1 ratio) for the N1 16SM. Texture rate slightly favors the NVIDIA part at 300.3 GTexel/s versus 279.4 GTexel/s, while pixel rate strongly favors the AMD part at 159.7 GPixel/s versus 56.30 GPixel/s.

Memory bandwidth favors the N1 16SM at 273.2 GB/s versus 224.0 GB/s for the RX 6600 LE. The NVIDIA part's 256-bit bus is double the width of the AMD part's 128-bit bus, and its 128 GB capacity is 16 times larger. The RX 6600 LE compensates with a higher effective memory speed of 14 Gbps versus 8.5 Gbps for the N1 16SM.

Specification Differences

The two processors differ in nearly every specification category.

The RX 6600 LE is built on a 7 nm process with 11,060 million transistors and a die size of 237 mm². The N1 16SM is built on a 5 nm process with an unknown transistor count and a die size of 382 mm². The RX 6600 LE has a transistor density of 46.7M per mm²; the N1 16SM has no density listed.

Clock speeds: the RX 6600 LE runs at 1626 MHz base, 2045 MHz game, and 2495 MHz boost. The N1 16SM runs at 741 MHz base and 2346 MHz boost, with no game clock.

Memory: the RX 6600 LE has 8 GB GDDR6 at 1750 MHz (14 Gbps effective) on a 128-bit bus with 224.0 GB/s bandwidth. The N1 16SM has 128 GB LPDDR5X at 1067 MHz (8.5 Gbps effective) on a 256-bit bus with 273.2 GB/s bandwidth.

Compute units: the RX 6600 LE has 1,792 shading units, 112 TMUs, 64 ROPs, and 28 RT cores. The N1 16SM has 2,048 shading units, 128 TMUs, 24 ROPs, 16 RT cores, and 64 tensor cores.

Rates: the RX 6600 LE delivers 159.7 GPixel/s and 279.4 GTexel/s. The N1 16SM delivers 56.30 GPixel/s and 300.3 GTexel/s. FP32 is 8.942 TFLOPS for the AMD part and 9.609 TFLOPS for the NVIDIA part. FP16 is 17.88 TFLOPS (2:1) for the AMD part and 9.609 TFLOPS (1:1) for the NVIDIA part.

Power and form factor: the RX 6600 LE has a TDP of 132 W, is dual-slot, uses a 1x 8-pin power connector, and suggests a 300 W PSU. The N1 16SM has an unknown TDP, is an IGP, uses no power connectors, and has no suggested PSU.

Interfaces and outputs: the RX 6600 LE uses PCIe 4.0 x8 and outputs 1x HDMI 2.1 plus 3x DisplayPort 1.4a. The N1 16SM uses PCIe 5.0 x16 and outputs 1x HDMI. API support: the RX 6600 LE supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1 16SM lists N/A for all three.

Physical dimensions: the RX 6600 LE is 190 mm long, 110 mm high, and 40 mm wide. The N1 16SM has no dimensions listed. The RX 6600 LE was released on 2023-12-07 and has the predecessor "Navi" and successor "Navi III". The N1 16SM was released on 2026-05-31 and has no predecessor or successor listed. Both have a production status of Active, and neither has a launch MSRP in the database.