AMD Radeon RX 6450M vs NVIDIA N1 16SM Comparison

AMD Radeon RX 6450M and NVIDIA N1 16SM represent two distinct approaches to integrated mobile graphics, separated by nearly three years of architectural evolution. The RX 6450M is a discrete-class IGP built on AMD’s RDNA 2.0 architecture, fabricated on a 6 nm TSMC process with 5,400 million transistors on a 107 mm² die. The N1 16SM uses NVIDIA’s Blackwell 2.0 architecture on a 5 nm TSMC node, with a substantially larger 382 mm² die and an unknown transistor count. The recorded data shows both parts occupy the same percentile slot against all GPUs, each sitting at the 50th percentile, but their underlying configurations diverge sharply in nearly every measurable category.

FAQ

Q: How do the two GPUs compare in raw FP32 compute throughput?

A: The NVIDIA N1 16SM delivers 9.609 TFLOPS of FP32 performance, which is roughly 2.5 times the 3.779 TFLOPS recorded for the AMD Radeon RX 6450M. The N1 16SM also matches its FP32 figure in FP16 at a 1:1 ratio, whereas the RX 6450M reaches 7.557 TFLOPS FP16 with a 2:1 ratio.

Q: What type and amount of memory does each GPU use?

A: The RX 6450M uses 4 GB of GDDR6 on a 64-bit bus, providing 128.0 GB/s of bandwidth. The N1 16SM uses 128 GB of LPDDR5X on a 256-bit bus, providing 273.2 GB/s of bandwidth, more than double the AMD part’s bandwidth.

Q: Which GPU has a higher boost clock?

A: The AMD Radeon RX 6450M boosts to 2460 MHz, with a base clock of 2000 MHz and a game clock of 2220 MHz. The NVIDIA N1 16SM has a lower base clock of 741 MHz but a boost clock of 2346 MHz, slightly below the AMD part’s maximum.

Q: What is the difference in shading unit count?

A: The NVIDIA N1 16SM contains 2048 shading units, compared to 768 on the AMD Radeon RX 6450M. The N1 16SM also holds 128 texture mapping units versus 48, and 24 ROPs versus 32 on the AMD side.

Q: Are both GPUs integrated into the processor package?

A: Yes, both are classified as IGP (integrated graphics processor) with a slot width of IGP and no power connectors. The RX 6450M uses a PCIe 4.0 x4 bus interface, while the N1 16SM uses PCIe 5.0 x16.

Q: What API support does each GPU provide?

A: The AMD Radeon RX 6450M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The NVIDIA N1 16SM lists N/A for DirectX, OpenGL, and Vulkan in the database, indicating no comparable API ratings are recorded.

Architecture Differences

The two GPUs come from different architectural lineages. The AMD Radeon RX 6450M is part of the Radeon RX 6000 series, using the Navi 24 chip with RDNA 2.0 architecture. It is categorized under the Navi Mobile (RX 6000M) generation. The NVIDIA N1 16SM uses the GB20B chip with Blackwell 2.0 architecture and belongs to the Blackwell IGP (N1x) generation. These are not direct competitors in the traditional sense; the RX 6450M is a mobile-oriented RDNA 2 part while the N1 16SM is a Blackwell-generation integrated solution with a much larger die footprint.

Process technology differs as well. The RX 6450M is fabricated on a 6 nm TSMC process, while the N1 16SM uses a 5 nm TSMC process. The die area tells a significant story: the N1 16SM measures 382 mm², more than 3.5 times the 107 mm² of the RX 6450M. Transistor counts are recorded at 5,400 million for the AMD part, yielding a transistor density of 50.5 million per square millimeter. The N1 16SM lists no transistor count or density in the database, so a direct density comparison cannot be made. The larger die and newer node suggest the N1 16SM integrates substantially more logic, including a much higher shading unit count and dedicated tensor cores.

The RX 6450M includes 12 ray tracing cores, while the N1 16SM includes 16. The NVIDIA part also carries 64 tensor cores, a feature entirely absent from the AMD specification sheet. The RX 6450M has a PCIe 4.0 x4 interface, while the N1 16SM uses PCIe 5.0 x16, giving the NVIDIA part a wider and newer bus connection. Display outputs also differ: the RX 6450M lists portable device dependent outputs, while the N1 16SM lists a single HDMI output.

Where Each One Wins

The data indicates the NVIDIA N1 16SM wins decisively in raw compute-oriented workloads. Its FP32 throughput of 9.609 TFLOPS is roughly 2.5 times the RX 6450M’s 3.779 TFLOPS. Texture processing also favors NVIDIA heavily: the N1 16SM reaches 300.3 GTexel/s versus 118.1 GTexel/s for the AMD part, a gap of over 2.5 times. With 2048 shading units and 128 TMUs, the N1 16SM is built for parallel throughput in shader-heavy and texture-heavy tasks. The 64 tensor cores give it a distinct advantage in any workload that can use tensor operations, a capability the RX 6450M does not offer.

Memory bandwidth is another clear win for the N1 16SM. Its 273.2 GB/s bandwidth is more than double the 128.0 GB/s of the RX 6450M, and the 256-bit bus is four times wider than the 64-bit bus on the AMD part. The 128 GB LPDDR5X memory capacity dwarfs the 4 GB GDDR6 on the RX 6450M. For workloads that are memory-bound or require large working sets, the N1 16SM has a structural advantage.

The AMD Radeon RX 6450M does hold wins in a few specific areas. Its pixel rate of 78.72 GPixel/s exceeds the 56.30 GPixel/s of the N1 16SM, driven by its 32 ROPs versus 24 on the NVIDIA part. The RX 6450M also has a higher boost clock at 2460 MHz versus 2346 MHz, and a much higher base clock at 2000 MHz versus 741 MHz. Its 50 W TDP is recorded, while the N1 16SM has an unknown TDP, so no direct power comparison is possible. API support also favors AMD in the recorded data, with full DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 ratings; the N1 16SM lists N/A for all three.

Specification Differences

The specification differences between these two GPUs are extensive. The RX 6450M uses the Navi 24 chip with RDNA 2.0 architecture on a 6 nm TSMC process. The N1 16SM uses the GB20B chip with Blackwell 2.0 architecture on a 5 nm TSMC process. Die size differs dramatically: 107 mm² for AMD versus 382 mm² for NVIDIA. Transistors are recorded at 5,400 million for the RX 6450M, with no figure available for the N1 16SM.

Clock behavior diverges significantly. The RX 6450M has a base clock of 2000 MHz, a boost clock of 2460 MHz, and a game clock of 2220 MHz. The N1 16SM has a base clock of 741 MHz and a boost clock of 2346 MHz, with no game clock recorded. Memory clocks also differ: the RX 6450M runs at 2000 MHz with 16 Gbps effective, while the N1 16SM runs at 1067 MHz with 8.5 Gbps effective.

Memory configuration is one of the largest gaps. The RX 6450M offers 4 GB of GDDR6 on a 64-bit bus with 128.0 GB/s bandwidth. The N1 16SM offers 128 GB of LPDDR5X on a 256-bit bus with 273.2 GB/s bandwidth. The compute units differ as well: 768 shading units, 48 TMUs, and 32 ROPs for AMD versus 2048 shading units, 128 TMUs, and 24 ROPs for NVIDIA. Ray tracing cores number 12 on the AMD part and 16 on the NVIDIA part, while tensor cores are null on the RX 6450M and 64 on the N1 16SM.

Rates and throughput figures show NVIDIA ahead in most categories. Pixel rate is 78.72 GPixel/s for AMD and 56.30 GPixel/s for NVIDIA, a rare AMD win. Texture rate is 118.1 GTexel/s for AMD and 300.3 GTexel/s for NVIDIA. FP32 is 3.779 TFLOPS for AMD and 9.609 TFLOPS for NVIDIA. FP16 is 7.557 TFLOPS for AMD with a 2:1 ratio and 9.609 TFLOPS for NVIDIA with a 1:1 ratio.

The bus interface differs, with PCIe 4.0 x4 on the RX 6450M and PCIe 5.0 x16 on the N1 16SM. Power connectors are listed as none for both, and both are IGP slot width. The RX 6450M has a TDP of 50 W, while the N1 16SM has an unknown TDP. Display outputs are portable device dependent for AMD and 1x HDMI for NVIDIA. API support is fully listed for AMD but N/A for NVIDIA across DirectX, OpenGL, and Vulkan. Release dates also differ, with the RX 6450M released in early January 2023 and the N1 16SM released in mid-2026.

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark scores for these two GPUs, and both have an average benchmark score of zero. The nearest rival data is also empty. However, the specification-level measurements provide a clear quantitative picture of how they compare.

The largest single gap is in memory capacity. The N1 16SM’s 128 GB is 32 times the 4 GB of the RX 6450M. This is not a minor margin; it represents a fundamentally different class of memory subsystem. The N1 16SM also provides 273.2 GB/s of bandwidth, which is 2.13 times the 128.0 GB/s of the AMD part. For workloads that stream large datasets, the NVIDIA part has a decisive advantage.

Compute throughput favors NVIDIA by a similar margin. FP32 performance of 9.609 TFLOPS on the N1 16SM is 2.54 times the 3.779 TFLOPS of the RX 6450M. Texture rate shows a gap of 2.54 times as well, with 300.3 GTexel/s versus 118.1 GTexel/s. The shading unit count of 2048 versus 768 is a 2.67 times difference, and TMU count of 128 versus 48 is also 2.67 times. These consistent ratios indicate the N1 16SM is scaled up across the entire shader and texture pipeline, not just in one isolated metric.

The RX 6450M’s wins are narrower but real. Pixel rate of 78.72 GPixel/s beats the N1 16SM’s 56.30 GPixel/s by a factor of 1.40. Boost clock of 2460 MHz exceeds 2346 MHz by a small margin, and base clock of 2000 MHz is 2.70 times the 741 MHz of the NVIDIA part. The RX 6450M also has more ROPs, 32 versus 24, which explains its pixel rate advantage despite lower overall compute.

The FP16 comparison is interesting. The RX 6450M reaches 7.557 TFLOPS with a 2:1 ratio, meaning it processes two FP16 operations per FP32 operation. The N1 16SM reaches 9.609 TFLOPS with a 1:1 ratio, meaning its FP16 throughput equals its FP32 throughput. In absolute terms, the N1 16SM still leads by 1.27 times, but the AMD part’s 2:1 ratio shows an architectural approach that prioritizes FP16 acceleration on a smaller die.

Ray tracing hardware is present on both parts, with 12 cores on the RX 6450M and 16 on the N1 16SM. The N1 16SM also adds 64 tensor cores, which have no counterpart on the AMD side. For any workload that leverages tensor operations, the N1 16SM has an exclusive capability in this comparison.

Both GPUs are classified as IGP with no power connectors, but the RX 6450M has a recorded TDP of 50 W while the N1 16SM’s TDP is unknown. The RX 6450M uses PCIe 4.0 x4, a narrower bus than the PCIe 5.0 x16 found on the N1 16SM. The newer PCIe 5.0 interface offers higher data transfer potential, though the RX 6450M’s lower bandwidth requirements may not demand the wider bus.

Release timing places the RX 6450M in early 2023 and the N1 16SM in mid-2026, a span of over three years. The N1 16SM benefits from a newer 5 nm process versus 6 nm, a larger die, and a more recent architecture generation in Blackwell 2.0. The RX 6450M remains an active production part with a fully specified API feature set, including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the N1 16SM lists no API ratings.

The percentile ranking is identical for both at the 50th percentile against all GPUs, placing them in the middle of the database’s performance distribution. This parity in percentile, despite the large specification gaps, suggests the percentile metric may account for factors beyond raw compute, such as power constraints, driver maturity, or the integrated nature of both parts. With no benchmark scores recorded and no nearest rival data, the quantitative comparison rests entirely on the specification measurements detailed above. The data shows a clear overall performance advantage for the NVIDIA N1 16SM in compute, memory, and texture throughput, with the AMD Radeon RX 6450M holding specific wins in pixel rate, ROP count, and clock speeds.