NVIDIA GB10 vs NVIDIA N1X 48SM Comparison

NVIDIA GB10 and NVIDIA N1X 48SM share the same Blackwell 2.0 architecture, the same TSMC 5 nm process, the same 382 mm² die size, and the same 128 GB LPDDR5X memory configuration on a 256-bit bus. Both are integrated graphics processors (IGP) with no external power connectors, no DirectX, OpenGL, or Vulkan support, and a single HDMI output. The GB10 is classified in the Server Blackwell (Bxx) generation, while the N1X 48SM belongs to the Blackwell IGP (N1x) generation. The GB10 has a recorded average benchmark score of 117,393, placing it in the 95th percentile of all GPUs, while the N1X 48SM has no recorded benchmarks and sits at the 50th percentile with an average score of zero. The GB10 carries a launch MSRP of 3,999 USD; the N1X 48SM has no launch MSRP listed.

Where Each One Wins

The GB10 wins in every measurable performance category where data exists. Its average benchmark score of 117,393 is entirely derived from two recorded tests: Geekbench OpenCL at 120,137 and Geekbench Vulkan at 114,648. The N1X 48SM has no recorded benchmark scores, so its wins cannot be quantified from the database. The GB10 also holds a decisive advantage in the 95th percentile versus all GPUs, compared to the N1X 48SM’s 50th percentile, which indicates the GB10 outperforms the vast majority of GPUs in the database while the N1X 48SM sits at the median mark.

The GB10’s win condition is further reinforced by its higher clock speeds. Its base clock is 1665 MHz versus 741 MHz for the N1X 48SM, and its boost clock is 2418 MHz versus 2346 MHz. These frequency advantages translate into higher compute rates: the GB10 delivers 29.71 TFLOPS FP32 and FP16 (1:1), while the N1X 48SM delivers 28.83 TFLOPS in both. The GB10 also leads in pixel rate (116.1 GPixel/s versus 112.6 GPixel/s) and texture rate (928.5 GTexel/s versus 900.9 GTexel/s). The N1X 48SM’s only advantage is its later release date of 2026-05-31, compared to the GB10’s 2025-10-14, but the database shows no performance data to support a win for the newer part.

Architecture Differences

Both chips use the same GB20B silicon, fabricated on TSMC’s 5 nm process, with an identical die size of 382 mm². Transistor counts are unknown for both. The architecture is Blackwell 2.0 for both, but the generation labels differ: the GB10 is in the Server Blackwell (Bxx) generation, while the N1X 48SM is in the Blackwell IGP (N1x) generation. The GB10 lists its predecessor as Server Hopper and its successor as Server Rubin; the N1X 48SM has neither a predecessor nor a successor listed.

The shading core configuration is identical: 6144 shading units, 384 texture mapping units, 48 ROPs, and 48 ray tracing cores. The tensor core count differs significantly: the GB10 has 384 tensor cores, while the N1X 48SM has 192 tensor cores, exactly half. This difference does not affect the FP32 or FP16 throughput, which are nearly identical (29.71 TFLOPS versus 28.83 TFLOPS), but it implies the GB10 has double the tensor core hardware for AI workloads, assuming the architecture scales linearly, which the database does not explicitly confirm.

Clock behavior is a major architectural split. The GB10’s base clock of 1665 MHz is more than double the N1X 48SM’s 741 MHz, while the boost clocks are close at 2418 MHz versus 2346 MHz. This suggests the N1X 48SM relies on a much lower idle or sustained frequency floor, possibly to fit a different power envelope, though the N1X 48SM’s TDP is unknown while the GB10 is rated at 140 W. Both have the same memory clock of 1067 MHz with 8.5 Gbps effective, yielding identical 273.2 GB/s bandwidth.

The GB10 has full dimensions recorded: 150 mm length, 51 mm height, and 150 mm width. The N1X 48SM has no dimensions listed. Both are IGP slot width with no power connectors, but the GB10 lists a suggested PSU of 300 W while the N1X 48SM has no suggested PSU value.

FAQ

Q: Which chip has the higher average benchmark score?

A: The GB10 has an average benchmark score of 117,393. The N1X 48SM has no recorded benchmarks and an average score of zero.

Q: Do the two GPUs have the same memory configuration?

A: Yes. Both have 128 GB of LPDDR5X memory on a 256-bit bus with 273.2 GB/s bandwidth and a memory clock of 1067 MHz (8.5 Gbps effective).

Q: How do the tensor core counts compare?

A: The GB10 has 384 tensor cores, while the N1X 48SM has 192 tensor cores. All other core counts (shading units, TMUs, ROPs, RT cores) are identical at 6144, 384, 48, and 48, respectively.

Q: What is the difference in FP32 compute performance?

A: The GB10 delivers 29.71 TFLOPS FP32, and the N1X 48SM delivers 28.83 TFLOPS FP32. Both also achieve identical FP16 performance at a 1:1 ratio with their FP32 figures.

Q: Are both chips built on the same process node?

A: Yes. Both use TSMC’s 5 nm process and have the same die size of 382 mm².

Q: Which GPU has a higher boost clock?

A: The GB10 has a boost clock of 2418 MHz, which is higher than the N1X 48SM’s 2346 MHz. The GB10 also has a much higher base clock at 1665 MHz versus 741 MHz.

Specification Differences

The two GPUs differ in the following recorded fields:

• Generation: GB10 is “Server Blackwell (Bxx)”; N1X 48SM is “Blackwell IGP (N1x)”.
• Base clock: GB10 at 1665 MHz; N1X 48SM at 741 MHz.
• Boost clock: GB10 at 2418 MHz; N1X 48SM at 2346 MHz.
• Tensor cores: GB10 has 384; N1X 48SM has 192.
• Pixel rate: GB10 at 116.1 GPixel/s; N1X 48SM at 112.6 GPixel/s.
• Texture rate: GB10 at 928.5 GTexel/s; N1X 48SM at 900.9 GTexel/s.
• FP32 and FP16: GB10 at 29.71 TFLOPS; N1X 48SM at 28.83 TFLOPS (both FP16 at 1:1).
• TDP: GB10 at 140 W; N1X 48SM unknown.
• Suggested PSU: GB10 at 300 W; N1X 48SM has none listed.
• Dimensions: GB10 has 150 mm length, 51 mm height, 150 mm width; N1X 48SM has none listed.
• Release date: GB10 on 2025-10-14; N1X 48SM on 2026-05-31.
• Predecessor: GB10 is “Server Hopper”; N1X 48SM has none.
• Successor: GB10 is “Server Rubin”; N1X 48SM has none.
• Launch MSRP: GB10 at 3,999 USD; N1X 48SM has none.
• Benchmarks: GB10 has two recorded scores; N1X 48SM has none.
• Percentile vs all GPUs: GB10 at 95; N1X 48SM at 50.
• Average benchmark score: GB10 at 117,393; N1X 48SM at 0.
• Nearest rivals: GB10 has four listed; N1X 48SM has none.

Fields that are identical include: chip (GB20B), architecture (Blackwell 2.0), process node (5 nm), foundry (TSMC), die size (382 mm²), memory size (128 GB), memory type (LPDDR5X), bus width (256 bit), bandwidth (273.2 GB/s), memory clock (1067 MHz, 8.5 Gbps effective), shading units (6144), TMUs (384), ROPs (48), RT cores (48), slot width (IGP), power connectors (None), bus interface (PCIe 5.0 x16), display outputs (1x HDMI), and API support (N/A for DirectX, OpenGL, Vulkan).

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries between the GB10 and the N1X 48SM, and the N1X 48SM has zero recorded benchmark scores. The comparison therefore relies on the GB10’s recorded results and the N1X 48SM’s specification-derived figures.

The GB10’s strongest recorded win is in Geekbench OpenCL, where it scores 120,137. Its Geekbench Vulkan score is 114,648, slightly lower but still a strong result. These two scores yield an average of 117,393, which places the GB10 in the 95th percentile of all GPUs. The N1X 48SM, with no scores, cannot be compared directly, but its 50th percentile ranking indicates it sits at the median of the database, far below the GB10’s near-top placement.

In compute throughput, the GB10 leads by 0.88 TFLOPS FP32 (29.71 versus 28.83), a margin of roughly 3% relative to the N1X 48SM. The GB10 also leads in pixel rate by 3.5 GPixel/s (116.1 versus 112.6) and texture rate by 27.6 GTexel/s (928.5 versus 900.9). These differences stem from the GB10’s higher boost clock of 2418 MHz versus 2346 MHz, despite the N1X 48SM having the same core counts and memory subsystem.

The base clock gap is far larger: 1665 MHz versus 741 MHz. This 924 MHz difference suggests the N1X 48SM is designed to run at a much lower sustained frequency, possibly for thermal or power constraints, though its TDP is not recorded. The GB10’s 140 W TDP and 300 W suggested PSU provide a reference for its power requirements, while the N1X 48SM has no such figures in the database.

In terms of nearest rivals, the GB10’s closest competitor is the NVIDIA RTX 4000 SFF Ada Generation, with an average score of 117,088 and a delta of 0.3%, meaning the GB10 is marginally ahead. The AMD Radeon PRO W7700 scores 118,976, which is 1.3% higher than the GB10. The NVIDIA Tesla V100 SXM2 16 GB scores 114,395, putting the GB10 2.6% ahead, and the NVIDIA RTX A5500 Mobile scores 113,944, with the GB10 3% ahead. These deltas confirm the GB10 operates in a competitive tier, just below the Radeon PRO W7700 but above the other three rivals. The N1X 48SM has no nearest rivals listed, so its competitive position cannot be assessed beyond its 50th percentile.

The tensor core difference is the most notable architectural divergence. The GB10’s 384 tensor cores versus the N1X 48SM’s 192 tensor cores suggests the GB10 is configured for twice the tensor throughput, assuming identical per-core efficiency. This does not appear in the FP32 or FP16 benchmarks, which are nearly identical, but it indicates a potential advantage in AI or machine learning workloads that rely on tensor operations, even though no such benchmark data is recorded for either chip.

The release dates also differ, with the GB10 launching on 2025-10-14 and the N1X 48SM on 2026-05-31. The newer N1X 48SM does not benefit from any recorded performance data, so its later release does not translate into a measured advantage in the database. The GB10’s predecessor and successor links (Server Hopper and Server Rubin) place it in a defined product lineage, while the N1X 48SM has no lineage entries.

Overall, the recorded data shows the GB10 as the fully characterized and benchmarked part, with a 95th percentile standing and a 117,393 average score. The N1X 48SM is nominally active in production but lacks any benchmark results, leaving its performance unverified. The GB10 leads in every measurable specification where both have data, with the only unknown being the N1X 48SM’s power draw and physical dimensions, both absent from the database.