NVIDIA N1X 48SM vs NVIDIA RTX PRO 6000 Blackwell Server Comparison

Where Each One Wins

The recorded data splits these two NVIDIA Blackwell 2.0 parts into entirely different roles. The N1X 48SM is an integrated graphics processor (IGP), built for a single system-on-chip package with no standalone power connectors and one HDMI output. Its strengths lie in dense compute per die area, low power integration, and unified memory access. The RTX PRO 6000 Blackwell Server is a dual-slot discrete accelerator with a 600 W TDP, a 16-pin power connector, and four DisplayPort 2.1b outputs, clearly positioned for rack-mounted rendering workloads.

Benchmark results show only one recorded test for the RTX PRO 6000 Blackwell Server: a 3DMark Steel Nomad DX12 score of 5996. That score places it at the 34th percentile among all GPUs in the database, and its nearest rivals are strikingly close: the NVIDIA GeForce GTX 770M averages 6000 (delta -0.1%), the AMD Radeon RX 6400 averages 6001 (delta -0.1%), the AMD FirePro W4100 averages 5987 (delta +0.2%), and the NVIDIA Quadro K4000M averages 5986 (delta +0.2%). The N1X 48SM has no benchmark entries, no wins, and no nearest rivals in the database, so its performance profile must be inferred from its architectural specifications rather than measured scores.

Where the N1X 48SM wins is in memory capacity and integration. It carries 128 GB of LPDDR5X on a 256-bit bus, delivering 273.2 GB/s of bandwidth. That capacity is 32 GB larger than the RTX PRO 6000's 96 GB GDDR7 pool. For workloads that need large in-memory datasets, such as inference batches or virtualized desktop sessions, the N1X 48SM offers more headroom without requiring external VRAM allocation. Its 5 nm TSMC process and 382 mm² die also make it a far smaller physical footprint than the 750 mm² GB202 chip, which matters for compact server boards.

The RTX PRO 6000 Blackwell Server wins in raw throughput and feature completeness. Its 24,064 shading units, 752 texture units, 188 RT cores, and 752 tensor cores dwarf the N1X 48SM's 6,144 shaders, 384 TMUs, 48 RT cores, and 192 tensor cores. Its FP32 and FP16 compute both reach 126.0 TFLOPS, versus 28.83 TFLOPS for the N1X 48SM. The discrete card also supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the IGP reports N/A for all three APIs, meaning software that requires those graphics APIs cannot run on the N1X 48SM at all.

Architecture Differences

Both chips use TSMC's 5 nm process and the Blackwell 2.0 architecture, but they diverge sharply in scale. The N1X 48SM uses the GB20B chip with a die size of 382 mm²; the RTX PRO 6000 uses GB202 with a die size of 750 mm² and a transistor count of 92,200 million, giving a density of 122.9M transistors per mm². The N1X transistor count is listed as unknown, so direct density comparison is impossible from the data. Clock speeds also differ: the N1X runs at a 741 MHz base and 2346 MHz boost, while the RTX PRO 6000 starts at 1590 MHz and boosts to 2617 MHz.

Memory architecture is a major split. The N1X 48SM uses 128 GB of LPDDR5X on a 256-bit bus, with memory clocks at 1067 MHz (8.5 Gbps effective) yielding 273.2 GB/s. The RTX PRO 6000 uses 96 GB of GDDR7 on a 512-bit bus, with 1750 MHz (28 Gbps effective) yielding 1.79 TB/s. That is over six times the bandwidth, but the N1X offers 33% more capacity. The discrete card also has a 192 ROP count versus 48 on the IGP, and pixel rate of 502.5 GPixel/s versus 112.6 GPixel/s. Texture rate is 1,968.0 GTexel/s versus 900.9 GTexel/s.

Power and physical design differ completely. The N1X has no TDP listed, no slot width beyond "IGP", no power connectors, and no suggested PSU. The RTX PRO 6000 draws 600 W, requires a 1000 W PSU, occupies a dual-slot footprint (267 mm long, 111 mm high, 40 mm wide), and uses a single 16-pin connector. The N1X connects via PCIe 5.0 x16 like the discrete card, but its integrated nature means it draws from the host memory controller rather than a dedicated VRAM subsystem.

Release timing also differs: the N1X 48SM launched on 2026-05-31, while the RTX PRO 6000 Blackwell Server launched on 2025-03-17. The discrete card has a known predecessor (Server Hopper) and successor (Server Rubin) in the database; the N1X lists neither. Both are marked as Active production.

Head-to-Head Benchmarks

The only benchmark recorded in the database for either part is the 3DMark Steel Nomad DX12 test, which appears solely for the RTX PRO 6000 Blackwell Server with a score of 5996. The N1X 48SM has no benchmark entries at all, so no direct head-to-head comparison is possible from measured data. The wins counter shows 0 for both items, confirming the absence of overlapping test results.

That single score places the RTX PRO 6000 at the 34th percentile across all GPUs, which is surprisingly low for a card with 126.0 TFLOPS FP32 compute. Its nearest rivals are all much older or lower-tier parts: the GTX 770M (avg 6000), RX 6400 (avg 6001), FirePro W4100 (avg 5987), and Quadro K4000M (avg 5986). The deltas are tiny, ranging from -0.1% to +0.2%, meaning the RTX PRO 6000 effectively ties those four in this specific DX12 test. This suggests that the Steel Nomad workload may be memory-bandwidth or driver-bound rather than compute-bound, since the RTX PRO 6000's 1.79 TB/s bandwidth and 24,064 shaders do not translate into a decisive lead over a laptop GTX 770M in this benchmark.

For the N1X 48SM, the absence of any benchmark score means the database cannot confirm its performance in any test. However, its FP32 throughput of 28.83 TFLOPS is roughly 23% of the RTX PRO 6000's 126.0 TFLOPS, and its 273.2 GB/s bandwidth is about 15% of the discrete card's 1.79 TB/s. Those ratios indicate that in compute-heavy workloads, the RTX PRO 6000 would likely dominate, but the N1X's 128 GB capacity could win memory-bound tasks that exceed the 96 GB limit.

The pixel rate difference (112.6 vs 502.5 GPixel/s) and texture rate difference (900.9 vs 1,968.0 GTexel/s) further reinforce that the RTX PRO 6000 is built for rasterization throughput, while the N1X is a general-purpose IGP with modest render output. Since the N1X lists N/A for DirectX, OpenGL, and Vulkan, it cannot run traditional graphics API workloads at all, making any benchmark comparison moot for gaming or workstation D3D applications.

FAQ

Q: Which GPU has more memory capacity?

A: The NVIDIA N1X 48SM has 128 GB of LPDDR5X, while the NVIDIA RTX PRO 6000 Blackwell Server has 96 GB of GDDR7. The N1X provides 32 GB more capacity, but the RTX PRO 6000 has far higher bandwidth at 1.79 TB/s versus 273.2 GB/s.

Q: What is the only benchmark score in the database for these two parts?

A: The RTX PRO 6000 Blackwell Server has a single 3DMark Steel Nomad DX12 score of 5996. The N1X 48SM has no benchmark entries.

Q: How does the RTX PRO 6000 compare to its nearest rivals in that benchmark?

A: It scores 5996, which is within 0.2% of the AMD FirePro W4100 (5987), the NVIDIA Quadro K4000M (5986), the NVIDIA GeForce GTX 770M (6000), and the AMD Radeon RX 6400 (6001). All deltas are between -0.1% and +0.2%.

Q: Can the N1X 48SM run DirectX or Vulkan applications?

A: No. The database lists DirectX, OpenGL, and Vulkan all as N/A for the N1X 48SM. The RTX PRO 6000 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What are the physical and power differences?

A: The N1X is an IGP with no power connectors, no slot width beyond integrated, and no TDP listed. The RTX PRO 6000 is a dual-slot card with a 600 W TDP, a 16-pin connector, a 1000 W suggested PSU, and dimensions of 267 mm by 111 mm by 40 mm.

Q: Which chip has a higher transistor count?

A: The RTX PRO 6000's GB202 has 92,200 million transistors on a 750 mm² die. The N1X's GB20B has an unknown transistor count, but its die is 382 mm².

The Verdict

The data points to two distinct purchasing decisions. For compute workloads that require maximum FP32/FP16 throughput, the RTX PRO 6000 Blackwell Server is the only choice with measured performance: 126.0 TFLOPS, 1.79 TB/s bandwidth, 752 tensor cores, and 188 RT cores. It also supports the full modern graphics API stack, making it suitable for DX12 or Vulkan rendering. Its single benchmark score of 5996 is unimpressive relative to its specs, but that result is an outlier among its rivals, which are all much weaker parts; the card's architectural advantages in shading units, texture rate, and pixel rate remain valid for non-DX12 workloads.

For memory-capacity-bound applications, the N1X 48SM offers 128 GB, which exceeds the RTX PRO 6000's 96 GB. It also consumes no dedicated power connectors and fits as an IGP, enabling server boards without discrete GPU slots. However, its lack of any graphics API support means it cannot run traditional rendering software, and its 28.83 TFLOPS FP32 is only 23% of the discrete card's throughput. The N1X is a data-center inference or large-memory compute part, not a graphics card.

The RTX PRO 6000's percentile ranking of 34 and its near-tie with the GTX 770M in Steel Nomad suggest that benchmark does not reflect its compute class. The N1X has no measured scores, so its real-world performance is unverified in the database. Given the absence of head-to-head results, the verdict is conditional: choose the RTX PRO 6000 for any workload requiring graphics APIs, rasterization, or maximum compute density; choose the N1X 48SM only when 128 GB of unified memory on an IGP is the priority and graphics API support is irrelevant. The RTX PRO 6000 also has a known predecessor (Server Hopper) and successor (Server Rubin), indicating an established product line, while the N1X appears as a standalone IGP with no lineage in the database.