NVIDIA GeForce RTX 5080 vs NVIDIA N1X 48SM Comparison

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the NVIDIA GeForce RTX 5080 and the NVIDIA N1X 48SM. The RTX 5080 has a full suite of recorded measurements, while the N1X 48SM has no benchmark entries at all. This absence of data makes direct performance comparison impossible from recorded scores.

The RTX 5080’s average benchmark score across all tests is 56083, placing it in the 87th percentile of all GPUs in the database. Its nearest rivals show how tightly clustered its performance is: the AMD Radeon 8060S scores 55757 (0.6% lower), the AMD Radeon RX 6750 GRE 12 GB scores 55698 (0.7% lower), and the AMD Radeon Pro W5700X scores 54828 (2.3% lower). The AMD Radeon RX 9070 GRE scores 57367, which is 2.2% higher than the RTX 5080.

The RTX 5080’s individual benchmark results show its strongest showing in 3DMark Steel Nomad DX12 with a score of 8637. In Geekbench, the OpenCL score is 235901 and the Vulkan score is 255450. Passmark results include a G3D score of 36565, a GPU compute score of 21789, a G2D score of 1415, DirectX 9 at 389, DirectX 11 at 324, DirectX 10 at 208, and DirectX 12 at 151.

Since the N1X 48SM has no benchmark scores, its percentile rank of 50 is a placeholder value, not a measured result. The recorded data confirms that the RTX 5080 is a fully benchmarked discrete GPU, whereas the N1X 48SM exists in the database only with architectural specifications and no performance measurements.

Architecture Differences

Both processors use NVIDIA’s Blackwell 2.0 architecture and are fabricated on a 5 nm process at TSMC. The RTX 5080 uses the GB203 chip, while the N1X 48SM uses the GB20B chip. The die sizes are close: 378 mm² for the RTX 5080 versus 382 mm² for the N1X 48SM. The RTX 5080 has a known transistor count of 45,600 million, giving it a density of 120.6M per mm². The N1X 48SM’s transistor count is listed as unknown.

The streaming multiprocessor configuration differs substantially. The RTX 5080 has 10752 shading units, 336 texture mapping units, and 112 render output units. The N1X 48SM has 6144 shading units, 384 TMUs, and only 48 ROPs. This means the RTX 5080 has 75% more shading units and 133% more ROPs, while the N1X 48SM has 14% more TMUs.

Ray tracing and tensor core counts also diverge. The RTX 5080 carries 84 RT cores and 336 tensor cores. The N1X 48SM has 48 RT cores and 192 tensor cores. The RTX 5080 thus has 75% more RT cores and 75% more tensor cores.

Clock speeds show a significant difference. The RTX 5080 has a base clock of 2295 MHz and a boost clock of 2617 MHz. The N1X 48SM has a much lower base clock of 741 MHz but a boost clock of 2346 MHz, which is close to the RTX 5080’s base figure. Memory clocks are also different: the RTX 5080 runs at 1875 MHz (30 Gbps effective) while the N1X 48SM runs at 1067 MHz (8.5 Gbps effective).

The memory subsystem is a major architectural split. The RTX 5080 uses 16 GB of GDDR7 on a 256-bit bus, yielding 960.0 GB/s bandwidth. The N1X 48SM uses 128 GB of LPDDR5X on the same 256-bit bus, but bandwidth is only 273.2 GB/s. This is a 3.5x bandwidth advantage for the RTX 5080, though the N1X 48SM has eight times the memory capacity.

Rasterization rates follow the hardware counts. The RTX 5080 achieves 293.1 GPixel/s pixel rate and 879.3 GTexel/s texture rate. The N1X 48SM achieves 112.6 GPixel/s and 900.9 GTexel/s. The texture rate of the N1X 48SM is actually 2.5% higher despite its lower shading core count, which reflects its larger TMU count.

Compute throughput shows a clear hierarchy. The RTX 5080 delivers 56.28 TFLOPS FP32 and the same 56.28 TFLOPS FP16 (1:1 ratio). The N1X 48SM delivers 28.83 TFLOPS FP32 and 28.83 TFLOPS FP16 (1:1 ratio). The RTX 5080 has 95% more FP32 and FP16 throughput.

API support differs completely. The RTX 5080 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1X 48SM lists DirectX as N/A, OpenGL as N/A, and Vulkan as N/A. This indicates the N1X 48SM is not designed for standard desktop graphics API workloads.

Power and physical characteristics also diverge. The RTX 5080 has a TDP of 360 W, uses a dual-slot form factor, and requires a single 16-pin power connector with a suggested PSU of 750 W. The N1X 48SM has an unknown TDP, is an IGP (integrated graphics processor) with no power connectors, and has no suggested PSU. The RTX 5080 has dimensions of 304 mm length, 137 mm height, and 40 mm width. The N1X 48SM has no listed dimensions.

Display outputs differ as well. The RTX 5080 provides 1x HDMI 2.1b and 3x DisplayPort 2.1b. The N1X 48SM provides only 1x HDMI. Both use a PCIe 5.0 x16 bus interface.

The Verdict

The recorded data shows two very different products despite the shared architecture name. The RTX 5080 is a discrete, high-performance GPU with full benchmark coverage and an 87th percentile rank. The N1X 48SM is an integrated graphics solution with no benchmark scores and a placeholder 50th percentile.

For raw compute, the RTX 5080 delivers 56.28 TFLOPS FP32 versus 28.83 TFLOPS for the N1X 48SM, a 95% advantage. For memory bandwidth, the RTX 5080’s 960.0 GB/s is 3.5x the N1X 48SM’s 273.2 GB/s. For pixel throughput, the RTX 5080’s 293.1 GPixel/s is 2.6x the N1X 48SM’s 112.6 GPixel/s.

The N1X 48SM does have advantages in specific areas. Its 128 GB memory capacity is eight times the RTX 5080’s 16 GB. Its texture rate of 900.9 GTexel/s is slightly higher than the RTX 5080’s 879.3 GTexel/s. Its TMU count of 384 exceeds the RTX 5080’s 336.

The RTX 5080’s launch MSRP is 999 USD. The N1X 48SM has no launch MSRP recorded.

The data indicates the RTX 5080 is for workloads requiring high FPS, large bandwidth, and full graphics API support. The N1X 48SM is for systems needing massive memory capacity in an integrated form factor, with no discrete power connectors and no standard graphics API exposure. The RTX 5080’s production status is Active, as is the N1X 48SM’s, but the RTX 5080 released on 2025-01-29 while the N1X 48SM is dated 2026-05-31.

Specification Differences

| Specification | NVIDIA GeForce RTX 5080 | NVIDIA N1X 48SM |

|---|---|---|

| Chip | GB203 | GB20B |

| Process Node | 5 nm | 5 nm |

| Die Size | 378 mm² | 382 mm² |

| Transistors | 45,600 million | unknown |

| Transistor Density | 120.6M / mm² | null |

| Base Clock | 2295 MHz | 741 MHz |

| Boost Clock | 2617 MHz | 2346 MHz |

| Memory Clock | 1875 MHz (30 Gbps effective) | 1067 MHz (8.5 Gbps effective) |

| Memory Size | 16 GB | 128 GB |

| Memory Type | GDDR7 | LPDDR5X |

| Memory Bus Width | 256 bit | 256 bit |

| Memory Bandwidth | 960.0 GB/s | 273.2 GB/s |

| Shading Units | 10752 | 6144 |

| TMUs | 336 | 384 |

| ROPs | 112 | 48 |

| RT Cores | 84 | 48 |

| Tensor Cores | 336 | 192 |

| Pixel Rate | 293.1 GPixel/s | 112.6 GPixel/s |

| Texture Rate | 879.3 GTexel/s | 900.9 GTexel/s |

| FP32 | 56.28 TFLOPS | 28.83 TFLOPS |

| FP16 | 56.28 TFLOPS (1:1) | 28.83 TFLOPS (1:1) |

| TDP | 360 W | unknown |

| Slot Width | Dual-slot | IGP |

| Power Connectors | 1x 16-pin | None |

| Suggested PSU | 750 W | null |

| Display Outputs | 1x HDMI 2.1b, 3x DisplayPort 2.1b | 1x HDMI |

| DirectX | 12 Ultimate (12_2) | N/A |

| OpenGL | 4.6 | N/A |

| Vulkan | 1.4 | N/A |

| Release Date | 2025-01-29 | 2026-05-31 |

| Launch MSRP | 999 USD | null |

FAQ

Q: Which GPU has more shading units?

A: The RTX 5080 has 10752 shading units, while the N1X 48SM has 6144 shading units.

Q: What is the memory bandwidth difference?

A: The RTX 5080 has 960.0 GB/s bandwidth from GDDR7 memory, while the N1X 48SM has 273.2 GB/s from LPDDR5X memory.

Q: Does the N1X 48SM support DirectX?

A: No, the N1X 48SM lists DirectX as N/A. The RTX 5080 supports DirectX 12 Ultimate (12_2).

Q: How much memory does each GPU have?

A: The RTX 5080 has 16 GB of GDDR7. The N1X 48SM has 128 GB of LPDDR5X.

Q: What is the TDP of the N1X 48SM?

A: The TDP is listed as unknown. The RTX 5080 has a TDP of 360 W.

Q: Which GPU has a higher boost clock?

A: The RTX 5080 has a boost clock of 2617 MHz, which is higher than the N1X 48SM’s boost clock of 2346 MHz.