NVIDIA GeForce RTX 5090 D V2 vs NVIDIA N1X 48SM Comparison

The NVIDIA GeForce RTX 5090 D V2 and the NVIDIA N1X 48SM are both built on the Blackwell 2.0 architecture, but they serve entirely different segments of the market. The RTX 5090 D V2 is a discrete, dual-slot add-in card with a 575 W power target, while the N1X 48SM is an integrated graphics processor (IGP) with no power connectors and a 128 GB unified memory pool. The database records a single benchmark result for the RTX 5090 D V2, scoring 16,504 points in the 3DMark Steel Nomad DX12 test, while the N1X 48SM has no recorded benchmark scores. This means quantitative head-to-head comparisons are limited to the available data, but the specification sheet reveals a dramatic performance and capability gap.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between these two products. The RTX 5090 D V2 has one recorded benchmark score: 16,504 points in 3DMark Steel Nomad DX12. This places it at the 59th percentile among all GPUs in the database. The N1X 48SM has no benchmark entries and an average benchmark score of zero, with its percentile sitting at 50 by default.

The RTX 5090 D V2's nearest rivals, based on average benchmark scores, are the NVIDIA T400 at 16,508 points (a 0% delta), the AMD Radeon PRO W7500 at 16,415 points (0.5% ahead of the RTX 5090 D V2), the NVIDIA RTX PRO 6000 Blackwell at 16,408 points (0.6% ahead), and the AMD Radeon RX 5700 XT at 16,361 points (0.9% behind the RTX 5090 D V2). These deltas are extremely tight, indicating that the RTX 5090 D V2's single benchmark score is essentially tied with these four products, within a margin of less than one percent.

Since the N1X 48SM has no benchmark data, the database cannot establish a performance relationship between it and the RTX 5090 D V2. The recorded data only supports a comparison of specifications, not measured performance outcomes. The RTX 5090 D V2's raw compute figures, such as 104.8 TFLOPS FP32 versus 28.83 TFLOPS for the N1X 48SM, strongly suggest a massive performance differential, but no benchmark score exists to confirm it in practice.

FAQ

Q: What is the benchmark score for the NVIDIA GeForce RTX 5090 D V2?

A: The RTX 5090 D V2 records a score of 16,504 points in the 3DMark Steel Nomad DX12 test, which places it at the 59th percentile among all GPUs in the database.

Q: Does the NVIDIA N1X 48SM have any recorded benchmark scores?

A: No. The database lists no benchmarks for the N1X 48SM, and its average benchmark score is zero.

Q: How does the RTX 5090 D V2 compare to its nearest rivals in the database?

A: The RTX 5090 D V2 is effectively tied with the NVIDIA T400 (16,508 points, 0% delta), the AMD Radeon PRO W7500 (16,415 points, 0.5% ahead), the NVIDIA RTX PRO 6000 Blackwell (16,408 points, 0.6% ahead), and the AMD Radeon RX 5700 XT (16,361 points, 0.9% behind).

Q: What memory configurations do the two GPUs use?

A: The RTX 5090 D V2 uses 24 GB of GDDR7 on a 384-bit bus with 1.34 TB/s bandwidth. The N1X 48SM uses 128 GB of LPDDR5X on a 256-bit bus with 273.2 GB/s bandwidth.

Q: What are the FP32 compute capabilities of each GPU?

A: The RTX 5090 D V2 delivers 104.8 TFLOPS FP32, while the N1X 48SM delivers 28.83 TFLOPS FP32. Both have a 1:1 FP16 ratio, so the same figures apply for FP16.

Q: What process node and die size do the two GPUs use?

A: Both are fabricated on a 5 nm process at TSMC. The RTX 5090 D V2 has a die size of 750 mm² with 92,200 million transistors, while the N1X 48SM has a die size of 382 mm² with an unknown transistor count.

Architecture Differences

Both GPUs share the Blackwell 2.0 architecture and are manufactured on a 5 nm process at TSMC, but their implementations diverge sharply. The RTX 5090 D V2 uses the GB202 chip with 92,200 million transistors on a 750 mm² die, achieving a transistor density of 122.9 million per mm². The N1X 48SM uses the GB20B chip on a 382 mm² die, with an unknown transistor count and no density figure recorded. The die size difference of 368 mm² is substantial, reflecting the RTX 5090 D V2's much larger compute and memory subsystem.

The shading unit counts differ by a factor of over 3.5: the RTX 5090 D V2 has 21,760 shading units, while the N1X 48SM has 6,144. Texture mapping units follow a similar pattern, with 680 on the RTX 5090 D V2 versus 384 on the N1X 48SM. The render output units show a wider gap: 176 versus 48. Ray tracing cores number 170 on the RTX 5090 D V2 compared to 48 on the N1X 48SM, and tensor cores are 680 versus 192.

The API support also differs completely. The RTX 5090 D V2 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1X 48SM records N/A for all three APIs, indicating it is not designed for conventional desktop graphics workloads in the same manner. The RTX 5090 D V2 is a full-featured discrete GPU with display outputs including 1x HDMI 2.1b and 3x DisplayPort 2.1b, while the N1X 48SM has a single HDMI output and is classified as an IGP.

Specification Differences

The clock speeds show a notable divergence. The RTX 5090 D V2 has a base clock of 2017 MHz and a boost clock of 2407 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 5090 D V2's boost. Memory clocks differ as well: the RTX 5090 D V2 runs at 1750 MHz with 28 Gbps effective, while the N1X 48SM runs at 1067 MHz with 8.5 Gbps effective.

Memory capacity and type represent the largest specification gap. The RTX 5090 D V2 has 24 GB of GDDR7 on a 384-bit bus, yielding 1.34 TB/s bandwidth. The N1X 48SM has 128 GB of LPDDR5X on a 256-bit bus, yielding 273.2 GB/s bandwidth. The bandwidth difference is nearly 5x in favor of the RTX 5090 D V2, though the N1X 48SM offers over 5x the capacity.

Pixel and texture rates reinforce the performance gap. The RTX 5090 D V2 achieves 423.6 GPixel/s and 1,636.8 GTexel/s. The N1X 48SM achieves 112.6 GPixel/s and 900.9 GTexel/s. Power delivery differs fundamentally: the RTX 5090 D V2 has a 575 W TDP, uses a single 16-pin connector, and suggests a 950 W power supply. The N1X 48SM has an unknown TDP, uses no power connectors, and has no suggested PSU. The RTX 5090 D V2 is dual-slot with dimensions of 304 mm length, 137 mm height, and 48 mm width. The N1X 48SM is an IGP with no recorded dimensions.

Both use PCIe 5.0 x16 bus interfaces. The release dates differ by over a year: the RTX 5090 D V2 appeared on August 14, 2025, while the N1X 48SM is dated May 31, 2026. The RTX 5090 D V2 has a launch MSRP of 2,299 USD, while the N1X 48SM has no recorded launch price.

The Verdict

The data supports a clear division: the NVIDIA GeForce RTX 5090 D V2 is a high-performance discrete GPU designed for demanding graphics workloads, while the NVIDIA N1X 48SM is an integrated processor with a different purpose entirely. The RTX 5090 D V2 delivers 104.8 TFLOPS FP32, 1.34 TB/s memory bandwidth, and a recorded 3DMark Steel Nomad score of 16,504. The N1X 48SM delivers 28.83 TFLOPS FP32, 273.2 GB/s memory bandwidth, and no recorded benchmark scores.

The RTX 5090 D V2's 575 W TDP and dual-slot form factor indicate it is intended for a desktop system with a dedicated power supply. The N1X 48SM's IGP classification, lack of power connectors, and 128 GB LPDDR5X memory suggest it is designed for integrated systems where unified memory capacity matters more than raw throughput. The N1X 48SM's boost clock of 2346 MHz comes close to the RTX 5090 D V2's 2407 MHz, but the shading unit count difference of 21,760 versus 6,144 makes the compute gap insurmountable.

For users requiring maximum graphics performance, the recorded data points exclusively to the RTX 5090 D V2. Its benchmark score places it among the top 59th percentile of all GPUs, and its nearest rivals are all within one percent of its score, confirming it sits in a competitive performance band. The N1X 48SM has no measured performance data, so it cannot be recommended for any benchmark-verified workload.

Where Each One Wins

The RTX 5090 D V2 wins on every quantifiable performance metric in the database. It has 3.5x the shading units, 3.5x the FP32 throughput, 4.9x the memory bandwidth, 3.8x the pixel rate, and 1.8x the texture rate compared to the N1X 48SM. Its ray tracing core count of 170 versus 48 and tensor core count of 680 versus 192 indicate it is better equipped for ray-traced and AI-accelerated workloads. The RTX 5090 D V2 also supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, making it compatible with modern graphics APIs.

The N1X 48SM wins on memory capacity with 128 GB versus 24 GB, which is 5.3x more memory. This makes it suited for workloads that require large memory footprints, such as data processing or large model inference, where bandwidth is less critical than capacity. The N1X 48SM also has a much lower base clock of 741 MHz versus 2017 MHz, which may indicate lower power draw at idle, though no TDP is recorded. Its IGP form factor means it requires no power connectors and no dedicated cooling solution beyond what the host system provides.

The RTX 5090 D V2's launch MSRP of 2,299 USD positions it as a premium discrete GPU. The N1X 48SM has no launch price, reflecting its nature as an integrated component rather than a standalone product. The database shows the RTX 5090 D V2 as the only one of the two with any benchmark validation, making it the sole choice for performance-verified applications. The N1X 48SM remains a specification-only entry, with its strengths limited to memory capacity and integration simplicity.