NVIDIA N1X 48SM vs NVIDIA RTX PRO 4500 Blackwell Comparison

Head-to-Head Benchmarks

The recorded data provides no direct head-to-head benchmark comparisons between the NVIDIA N1X 48SM and the NVIDIA RTX PRO 4500 Blackwell. The database contains zero shared benchmark entries for the two parts, and the head-to-head results table is empty. As a result, any performance comparison must be derived from the available specification data and the benchmark scores recorded for the RTX PRO 4500 Blackwell.

The RTX PRO 4500 Blackwell has a complete benchmark profile. Its 3DMark Steel Nomad DX12 score is 7025. In Geekbench Vulkan, it reaches 221768 points. Passmark results show a G3D score of 33360, a GPU compute score of 19255, a G2D score of 1336, and legacy DirectX scores of 397 for DirectX 9, 320 for DirectX 11, 204 for DirectX 10, and 119 for DirectX 12. The average benchmark score across these tests is 31532.

The N1X 48SM has no recorded benchmark scores. Its average benchmark score is zero, and its percentile versus all GPUs stands at 50. The RTX PRO 4500 Blackwell sits at the 76th percentile versus all GPUs. The N1X 48SM lacks any nearest rival entries, while the RTX PRO 4500 Blackwell has four comparable parts in the database. Against the NVIDIA TITAN RTX, the RTX PRO 4500 Blackwell trails by 0.5 percent. It leads the NVIDIA GRID M60-1Q by 1 percent, the NVIDIA Quadro M5000 by 1 percent, and trails the Intel Arc Pro A30M by 1.1 percent.

The compute potential difference is substantial. The RTX PRO 4500 Blackwell delivers 50.53 TFLOPS FP32 and the same 50.53 TFLOPS FP16 (1:1). The N1X 48SM produces 28.83 TFLOPS FP32 and 28.83 TFLOPS FP16 (1:1). The RTX PRO 4500 Blackwell is 75.3 percent ahead of the N1X 48SM in raw FP32 throughput. Pixel throughput also favors the RTX PRO 4500 Blackwell at 269.6 GPixel/s versus 112.6 GPixel/s for the N1X 48SM, a 139.4 percent advantage. Texture rate goes the other way: the N1X 48SM achieves 900.9 GTexel/s against 789.5 GTexel/s for the RTX PRO 4500 Blackwell, meaning the N1X 48SM leads by 14.1 percent in texture fill. The RTX PRO 4500 Blackwell has more shading units (10496 versus 6144), more ROPs (112 versus 48), more RT cores (82 versus 48), and more tensor cores (328 versus 192). The N1X 48SM has more TMUs (384 versus 328).

Memory bandwidth heavily favors the RTX PRO 4500 Blackwell. It uses GDDR7 memory with a 256-bit bus and delivers 896.0 GB/s. The N1X 48SM uses LPDDR5X memory on a 256-bit bus with 273.2 GB/s. The RTX PRO 4500 Blackwell provides 3.28 times the memory bandwidth. Memory capacity favors the N1X 48SM at 128 GB versus 32 GB, a 4:1 ratio. Clock speeds also differ meaningfully. The RTX PRO 4500 Blackwell has a base clock of 1635 MHz and a boost clock of 2407 MHz. The N1X 48SM has a base clock of 741 MHz and a boost clock of 2346 MHz. The RTX PRO 4500 Blackwell operates at a 120.6 percent higher base clock and a 2.6 percent higher boost clock.

The RTX PRO 4500 Blackwell also has a complete API support stack. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1X 48SM lists DirectX, OpenGL, and Vulkan as N/A. This indicates the RTX PRO 4500 Blackwell is designed for software ecosystems that require these modern graphics APIs, while the N1X 48SM does not expose them in the recorded data.

FAQ

Q: Which GPU has the higher FP32 compute throughput?

A: The NVIDIA RTX PRO 4500 Blackwell delivers 50.53 TFLOPS FP32, which is 75.3 percent higher than the 28.83 TFLOPS FP32 of the NVIDIA N1X 48SM.

Q: How do the memory bandwidth figures compare between the two cards?

A: The RTX PRO 4500 Blackwell reaches 896.0 GB/s using GDDR7 memory on a 256-bit bus. The N1X 48SM provides 273.2 GB/s using LPDDR5X memory on a 256-bit bus. The RTX PRO 4500 Blackwell has 3.28 times the memory bandwidth.

Q: What is the average benchmark score for each product?

A: The RTX PRO 4500 Blackwell has an average benchmark score of 31532 across its recorded tests. The N1X 48SM has no recorded benchmarks, so its average benchmark score is zero.

Q: How does the RTX PRO 4500 Blackwell compare to the NVIDIA TITAN RTX in the database?

A: The RTX PRO 4500 Blackwell has an average score of 31532, while the NVIDIA TITAN RTX has an average score of 31676. The RTX PRO 4500 Blackwell trails the TITAN RTX by 0.5 percent.

Q: Which GPU has more texture mapping units?

A: The N1X 48SM has 384 TMUs, while the RTX PRO 4500 Blackwell has 328 TMUs. The N1X 48SM also achieves a higher texture rate at 900.9 GTexel/s versus 789.5 GTexel/s for the RTX PRO 4500 Blackwell.

Q: What is the memory capacity difference between the two?

A: The N1X 48SM has 128 GB of LPDDR5X memory. The RTX PRO 4500 Blackwell has 32 GB of GDDR7 memory. The N1X 48SM offers four times the memory capacity.

The Verdict

The data indicates a clear separation in intended roles. The RTX PRO 4500 Blackwell is a workstation-oriented card with a complete benchmark profile, modern API support, and a 76th percentile standing among all GPUs. Its 50.53 TFLOPS FP32, 896.0 GB/s memory bandwidth, and 269.6 GPixel/s pixel rate make it the stronger candidate for compute-heavy and graphics-accelerated workloads. The nearest rival data confirms it sits within 1.1 percent of several established professional and workstation cards in the database, showing it is competitive with that tier of hardware.

The N1X 48SM is an integrated graphics processor (IGP) built on the same Blackwell 2.0 architecture and the same 5 nm TSMC process. It has no recorded benchmarks, no API support listed, and a 50th percentile standing. Its advantages are in memory capacity (128 GB versus 32 GB) and texture rate (900.9 GTexel/s versus 789.5 GTexel/s). These characteristics point toward a part designed for memory-capacity-driven tasks or integrated system configurations rather than raw graphics throughput.

Users who need a discrete workstation card with proven benchmark results, high memory bandwidth, and broad API compatibility should favor the RTX PRO 4500 Blackwell. Users who require large memory capacity in an integrated form factor, with no expansion slot needed and no power connectors, should consider the N1X 48SM. The N1X 48SM uses no power connectors and occupies an IGP slot width, while the RTX PRO 4500 Blackwell is a dual-slot card with a 16-pin power connector and a suggested power supply of 550 W.

The RTX PRO 4500 Blackwell also has a longer record of availability, with a release date in the database of 2025-03-17. The N1X 48SM has a release date of 2026-05-31. Both parts are listed as Active in production status. The RTX PRO 4500 Blackwell has a predecessor in the database (Workstation Ada), while the N1X 48SM has no predecessor or successor listed.

For raw compute and graphics performance, the RTX PRO 4500 Blackwell is the clear choice based on the recorded numbers. For memory capacity and texture fill, the N1X 48SM leads. The RTX PRO 4500 Blackwell also supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the N1X 48SM has no API support recorded. This makes the RTX PRO 4500 Blackwell the only one of the two that can run modern graphics workloads through standard APIs.

The percentile data reinforces this. The RTX PRO 4500 Blackwell sits at the 76th percentile against all GPUs in the database. The N1X 48SM sits at the 50th percentile. The RTX PRO 4500 Blackwell has an average benchmark score of 31532; the N1X 48SM has zero recorded benchmark scores. The benchmark data simply does not exist for the N1X 48SM, so any performance claims about it must rely on specification analysis alone.

Specification Differences

The two GPUs differ across nearly every specification field in the database.

Process node and foundry are identical: both use 5 nm TSMC. Die size is close: 382 mm² for the N1X 48SM and 378 mm² for the RTX PRO 4500 Blackwell. Transistor count is listed as unknown for the N1X 48SM and 45,600 million for the RTX PRO 4500 Blackwell. Transistor density is only recorded for the RTX PRO 4500 Blackwell at 120.6M per mm².

Memory differs in type, size, and bandwidth. The N1X 48SM uses LPDDR5X with 128 GB capacity, 256-bit bus width, and 273.2 GB/s bandwidth. The RTX PRO 4500 Blackwell uses GDDR7 with 32 GB capacity, 256-bit bus width, and 896.0 GB/s bandwidth. Memory clock differs: 1067 MHz with 8.5 Gbps effective for the N1X 48SM, versus 1750 MHz with 28 Gbps effective for the RTX PRO 4500 Blackwell.

Shading units: 6144 for the N1X 48SM, 10496 for the RTX PRO 4500 Blackwell. TMUs: 384 versus 328. ROPs: 48 versus 112. RT cores: 48 versus 82. Tensor cores: 192 versus 328.

Clock speeds differ. The N1X 48SM has a base clock of 741 MHz and boost of 2346 MHz. The RTX PRO 4500 Blackwell has a base clock of 1635 MHz and boost of 2407 MHz.

Pixel rate: 112.6 GPixel/s for the N1X 48SM, 269.6 GPixel/s for the RTX PRO 4500 Blackwell. Texture rate: 900.9 GTexel/s for the N1X 48SM, 789.5 GTexel/s for the RTX PRO 4500 Blackwell. FP32: 28.83 TFLOPS versus 50.53 TFLOPS. FP16: 28.83 TFLOPS (1:1) versus 50.53 TFLOPS (1:1).

Power and physical specifications differ as well. The N1X 48SM has unknown TDP, IGP slot width, no power connectors, and no suggested PSU. The RTX PRO 4500 Blackwell has a TDP of 200 W, dual-slot width, one 16-pin power connector, and a suggested PSU of 550 W.

Dimensions are only recorded for the RTX PRO 4500 Blackwell: 267 mm length (10.5 inches), 111 mm height (4.4 inches), and 40 mm width (1.6 inches). The N1X 48SM has no dimensions listed.

Display outputs differ: 1x HDMI for the N1X 48SM, 4x DisplayPort 2.1b for the RTX PRO 4500 Blackwell.

Bus interface is the same for both: PCIe 5.0 x16.

API support differs completely. The N1X 48SM lists DirectX, OpenGL, and Vulkan as N/A. The RTX PRO 4500 Blackwell supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Release dates differ: 2026-05-31 for the N1X 48SM, 2025-03-17 for the RTX PRO 4500 Blackwell. The RTX PRO 4500 Blackwell has a predecessor listed as Workstation Ada; the N1X 48SM has no predecessor or successor.

Chip names differ: GB20B for the N1X 48SM, GB203 for the RTX PRO 4500 Blackwell. Generation names also differ: the N1X 48SM is in the Blackwell IGP (N1x) generation, while the RTX PRO 4500 Blackwell is in the Blackwell PRO W (x000) generation.

Architecture Differences

Both GPUs share the Blackwell 2.0 architecture and the 5 nm TSMC process. The chip implementations, however, diverge in several structural ways.

The N1X 48SM uses the GB20B chip, while the RTX PRO 4500 Blackwell uses the GB203 chip. Die sizes are close, with the N1X 48SM at 382 mm² and the RTX PRO 4500 Blackwell at 378 mm², but the transistor counts differ substantially. The RTX PRO 4500 Blackwell has 45,600 million transistors, while the N1X 48SM lists an unknown transistor count. The RTX PRO 4500 Blackwell also has a recorded transistor density of 120.6M per mm².

The compute architecture differs in all major unit counts. The RTX PRO 4500 Blackwell has 10496 shading units, 328 TMUs, 112 ROPs, 82 RT cores, and 328 tensor cores. The N1X 48SM has 6144 shading units, 384 TMUs, 48 ROPs, 48 RT cores, and 192 tensor cores. The RTX PRO 4500 Blackwell has more shading units by 70.8 percent, more ROPs by 133.3 percent, more RT cores by 70.8 percent, and more tensor cores by 70.8 percent. The N1X 48SM has more TMUs by 17.1 percent.

The memory architecture diverges completely. The N1X 48SM uses LPDDR5X, which is a low-power memory type suited to integrated configurations. The RTX PRO 4500 Blackwell uses GDDR7, a high-bandwidth discrete memory type. Both use a 256-bit bus, but the effective data rates differ: 8.5 Gbps for the N1X 48SM versus 28 Gbps for the RTX PRO 4500 Blackwell. This results in the 896.0 GB/s bandwidth for the RTX PRO 4500 Blackwell versus 273.2 GB/s for the N1X 48SM.

Clock behavior reflects their different roles. The RTX PRO 4500 Blackwell has a much higher base clock (1635 MHz versus 741 MHz), indicating it is designed to sustain higher operating frequencies under load. The boost clocks are close (2407 MHz versus 2346 MHz), suggesting both can reach similar peak frequencies, but the RTX PRO 4500 Blackwell maintains a higher floor.

The RTX PRO 4500 Blackwell exposes a full modern graphics API stack: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1X 48SM has no API support recorded, with DirectX, OpenGL, and Vulkan all listed as N/A. This indicates the RTX PRO 4500 Blackwell is intended for software environments that rely on these APIs, while the N1X 48SM does not present itself as a general-purpose graphics API device in the recorded data.

Power delivery and physical integration differ as well. The RTX PRO 4500 Blackwell is a dual-slot card requiring a 16-pin power connector and a 550 W suggested PSU, with a TDP of 200 W. The N1X 48SM is an IGP with no power connectors and no suggested PSU, and its TDP is unknown. The RTX PRO 4500 Blackwell has four DisplayPort 2.1b outputs, while the N1X 48SM has a single HDMI output.

The production status for both is Active. The RTX PRO 4500 Blackwell was released earlier (2025-03-17) and has a predecessor in the Workstation Ada line. The N1X 48SM was released later (2026-05-31) and has no predecessor or successor listed.

The architecture differences suggest two distinct design goals within the same Blackwell 2.0 family. The RTX PRO 4500 Blackwell is a high-bandwidth, high-throughput discrete workstation GPU with full API support and a proven benchmark profile. The N1X 48SM is an integrated processor with a much larger memory pool, higher texture throughput, and no discrete power requirements, aimed at systems where physical integration and memory capacity outweigh raw compute and bandwidth.