NVIDIA H200 NVL vs NVIDIA N1X 48SM Comparison

Head-to-Head Benchmarks

The recorded data does not include any direct head-to-head benchmark results between the NVIDIA H200 NVL and the NVIDIA N1X 48SM. The database contains a single OpenCL benchmark score for the H200 NVL (334,891), while the N1X 48SM has no recorded benchmark scores at all. Consequently, a direct score comparison is not possible from the available measurements.

However, the H200 NVL can be positioned within the broader field through its nearest rivals. The H200 NVL sits at the 100th percentile of all GPUs in the database, indicating it outperforms every other recorded GPU in that aggregate metric. Its average benchmark score of 334,891 places it 3.1% behind the NVIDIA B200 (345,482), 5.3% ahead of the AMD Instinct MI300X (317,994), 9.4% behind the NVIDIA B300 SXM6 AC (369,831), and 13.2% ahead of the NVIDIA L40S (295,763). These deltas show the H200 NVL clustered tightly with the top-tier server accelerators, trailing the two newest Blackwell-generation parts but clearly ahead of the previous-generation L40S and the AMD flagship.

For the N1X 48SM, the database records a 50th percentile position across all GPUs, with no benchmark scores or rival comparisons available. This percentile rank suggests it lands in the middle of the distribution, but without raw scores, relative performance cannot be quantified.

Architecture Differences

The two chips diverge sharply in their design goals. The H200 NVL uses the GH100 die, built on the Hopper architecture, belonging to the Server Hopper (Hxx) generation. It is fabricated on a 5 nm process at TSMC with 80,000 million transistors on an 814 mm² die, yielding a transistor density of 98.3M per mm². The N1X 48SM uses the GB20B die, built on the Blackwell 2.0 architecture, belonging to the Blackwell IGP (N1x) generation. It is also fabricated on a 5 nm process at TSMC, but its transistor count is not recorded, and its die size is 382 mm², less than half the H200 NVL's area.

Clock behavior differs substantially. The H200 NVL runs at a base clock of 1365 MHz and a boost clock of 1785 MHz. The N1X 48SM has a much lower base clock of 741 MHz but a significantly higher boost clock of 2346 MHz. This indicates a wider clock range on the N1X, allowing it to ramp aggressively under load while idling at lower frequencies.

Memory architecture is fundamentally different. The H200 NVL features 141 GB of HBM3e on a 6144-bit bus, delivering 4.89 TB/s of bandwidth. The N1X 48SM uses 128 GB of LPDDR5X on a 256-bit bus, providing 273.2 GB/s of bandwidth. The H200 NVL's memory bandwidth is roughly 18 times higher, reflecting its role as a dedicated accelerator with high-bandwidth memory, while the N1X uses system-style LPDDR5X memory typical of an integrated graphics processor (IGP).

Compute resources also diverge. The H200 NVL has 16,896 shading units, 528 TMUs, 24 ROPs, and 528 tensor cores. The N1X 48SM has 6,144 shading units, 384 TMUs, 48 ROPs, 48 ray tracing cores, and 192 tensor cores. The H200 NVL has no dedicated ray tracing cores, while the N1X includes them. Pixel rate favors the N1X at 112.6 GPixel/s versus 42.84 GPixel/s for the H200 NVL, despite the H200 NVL having far more shading units. Texture rates are close, with the H200 NVL at 942.5 GTexel/s and the N1X at 900.9 GTexel/s.

FP32 compute is 60.32 TFLOPS for the H200 NVL versus 28.83 TFLOPS for the N1X, more than a 2-to-1 advantage. FP16 compute is 120.6 TFLOPS (2:1 ratio) for the H200 NVL versus 28.83 TFLOPS (1:1 ratio) for the N1X, a 4.2-to-1 difference. The H200 NVL doubles its FP16 throughput over FP32, while the N1X maintains a 1:1 ratio.

Form factor and power delivery are also distinct. The H200 NVL is a dual-slot card with an 8-pin EPS power connector and a 600 W TDP, requiring a 1000 W suggested PSU. It has no display outputs. The N1X 48SM is an IGP with no power connectors, unknown TDP, no suggested PSU, and one HDMI output. The H200 NVL measures 267 mm in length and 111 mm in height, while the N1X has no recorded dimensions.

Release timelines differ: the H200 NVL was released on 2024-11-17, while the N1X 48SM is dated 2026-05-31. Both are listed as Active in production status. The H200 NVL's predecessor is Server Ada, and its successor is Server Blackwell. The N1X has no recorded predecessor or successor. Both use PCIe 5.0 x16 as their bus interface, and both have no supported DirectX, OpenGL, or Vulkan APIs.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The H200 NVL delivers 60.32 TFLOPS FP32, which is more than double the N1X 48SM's 28.83 TFLOPS.

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

A: The H200 NVL has 4.89 TB/s of bandwidth from 141 GB HBM3e on a 6144-bit bus, while the N1X 48SM has 273.2 GB/s from 128 GB LPDDR5X on a 256-bit bus. The H200 NVL offers roughly 18 times more bandwidth.

Q: Does the N1X 48SM support ray tracing?

A: Yes, the N1X 48SM includes 48 ray tracing cores. The H200 NVL has no dedicated ray tracing cores.

Q: What are the clock speed ranges?

A: The H200 NVL runs at 1365 MHz base and 1785 MHz boost. The N1X 48SM runs at 741 MHz base and 2346 MHz boost.

Q: Which GPU has a higher pixel fill rate?

A: The N1X 48SM has a pixel rate of 112.6 GPixel/s, which is higher than the H200 NVL's 42.84 GPixel/s.

Q: What is the form factor of each?

A: The H200 NVL is a dual-slot card with an 8-pin EPS connector, 600 W TDP, and no display outputs. The N1X 48SM is an IGP with no power connectors, unknown TDP, and one HDMI output.

Specification Differences

| Specification | NVIDIA H200 NVL | NVIDIA N1X 48SM |

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

| Chip | GH100 | GB20B |

| Architecture | Hopper | Blackwell 2.0 |

| Generation | Server Hopper (Hxx) | Blackwell IGP (N1x) |

| Transistors | 80,000 million | unknown |

| Die Size | 814 mm² | 382 mm² |

| Transistor Density | 98.3M / mm² | null |

| Base Clock | 1365 MHz | 741 MHz |

| Boost Clock | 1785 MHz | 2346 MHz |

| Memory Size | 141 GB | 128 GB |

| Memory Type | HBM3e | LPDDR5X |

| Memory Bus Width | 6144 bit | 256 bit |

| Memory Bandwidth | 4.89 TB/s | 273.2 GB/s |

| Memory Clock | 1593 MHz 6.4 Gbps effective | 1067 MHz 8.5 Gbps effective |

| Shading Units | 16896 | 6144 |

| TMUs | 528 | 384 |

| ROPs | 24 | 48 |

| RT Cores | null | 48 |

| Tensor Cores | 528 | 192 |

| Pixel Rate | 42.84 GPixel/s | 112.6 GPixel/s |

| Texture Rate | 942.5 GTexel/s | 900.9 GTexel/s |

| FP32 | 60.32 TFLOPS | 28.83 TFLOPS |

| FP16 | 120.6 TFLOPS (2:1) | 28.83 TFLOPS (1:1) |

| TDP | 600 W | unknown |

| Slot Width | Dual-slot | IGP |

| Power Connectors | 8-pin EPS | None |

| Suggested PSU | 1000 W | null |

| Display Outputs | No outputs | 1x HDMI |

| Dimensions | 267 mm x 111 mm | null |

| Release Date | 2024-11-17 | 2026-05-31 |

| Predecessor | Server Ada | null |

| Successor | Server Blackwell | null |

Where Each One Wins

The H200 NVL wins decisively in raw compute throughput. Its FP32 score of 60.32 TFLOPS and FP16 score of 120.6 TFLOPS far exceed the N1X 48SM's 28.83 TFLOPS in both precisions. For workloads that depend on dense matrix math, tensor core operations, or large model inference, the H200 NVL's 528 tensor cores and 4.89 TB/s memory bandwidth make it the clear choice. Its 141 GB HBM3e capacity and 6144-bit bus are designed for massive datasets that must reside close to the compute units.

The H200 NVL also holds a commanding position in the broader GPU field. At the 100th percentile of all GPUs, it outperforms the AMD Instinct MI300X by 5.3% and the NVIDIA L40S by 13.2%, while trailing the B200 by 3.1% and the B300 SXM6 AC by 9.4%. This places it among the fastest accelerators in the database, suitable for top-tier server deployments.

The N1X 48SM wins in several specific areas. Its pixel rate of 112.6 GPixel/s is 2.6 times higher than the H200 NVL's 42.84 GPixel/s, indicating stronger rasterization throughput per clock. It includes 48 ray tracing cores, which the H200 NVL lacks entirely, making it applicable to graphics workloads that require ray-traced effects. Its 48 ROPs double the H200 NVL's 24 ROPs, further supporting pixel-heavy rendering tasks.

The N1X also offers greater clock headroom, boosting to 2346 MHz versus the H200 NVL's 1785 MHz. This higher boost clock, combined with a small 382 mm² die, suggests a more power-efficient design for integrated use cases. Its LPDDR5X memory at 128 GB is comparable in capacity to the H200 NVL's 141 GB, though at far lower bandwidth. The N1X includes an HDMI output, making it suitable for display-connected systems, while the H200 NVL has no display outputs and is intended for compute-only deployments.

The N1X sits at the 50th percentile of all GPUs, indicating mid-tier performance relative to the entire database. Its lack of recorded benchmark scores means its absolute performance cannot be quantified, but its specification profile points toward a balanced integrated processor for systems where moderate compute, graphics output, and ray tracing are required.

For datacenter-scale AI training and inference, the H200 NVL's memory bandwidth, FP16 throughput, and high-bandwidth HBM3e stack are the dominant factors. For workstation or edge scenarios where display output, ray tracing, and pixel throughput matter, the N1X 48SM provides capabilities the H200 NVL does not offer. The two GPUs target different segments of the market, and the benchmark data reflects this split.