NVIDIA N1 20SM vs NVIDIA RTX A1000 Comparison

The Verdict

The database comparison between the NVIDIA N1 20SM and the NVIDIA RTX A1000 shows two fundamentally different products serving distinct roles. The N1 20SM is a Blackwell 2.0 integrated graphics processor (IGP) built on a 5 nm TSMC node, while the RTX A1000 is an Ampere workstation card on Samsung 8 nm with a 50 W power envelope.

The RTX A1000 is the only one of the two with recorded benchmark data. It holds a 79th percentile ranking among all GPUs, with an average benchmark score of 34207. The N1 20SM has no benchmark entries and sits at the 50th percentile, making direct performance conclusions impossible from the recorded data. However, architectural specifications reveal clear strengths for each.

The RTX A1000 is the pick for software compatibility and practical workstation use. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the N1 20SM lists N/A for all three API categories. The A1000 also delivers four mini-DisplayPort 1.4a outputs versus a single HDMI on the N1 20SM. For any workload requiring established graphics APIs or multi-display setups, the A1000 is the functional choice.

The N1 20SM leads in raw compute throughput. Its FP32 rating of 12.01 TFLOPS nearly doubles the A1000's 6.737 TFLOPS. Texture rate also favors the N1 20SM at 375.4 GTexel/s versus 105.3 GTexel/s, and pixel rate sits at 56.30 GPixel/s compared to 46.78 GPixel/s. Memory capacity is dramatically different: 128 GB LPDDR5X on the N1 20SM versus 8 GB GDDR6 on the A1000, with bandwidth of 273.2 GB/s versus 192.0 GB/s.

The N1 20SM targets Blackwell IGP generation workloads where massive memory and compute density matter more than API compatibility. The A1000 remains the safer, more portable option for conventional workstation tasks. Neither product replaces the other; the data suggests they serve separate use cases.

Architecture Differences

The two GPUs come from different architectural generations and manufacturing processes. The N1 20SM uses the GB20B chip on the Blackwell 2.0 architecture, built at 5 nm by TSMC. The RTX A1000 uses the GA107 chip on the Ampere architecture, manufactured at 8 nm by Samsung. The die sizes reflect this split: the N1 20SM measures 382 mm², while the A1000 is 200 mm². Transistor counts are only recorded for the A1000 at 8,700 million, with a density of 43.5M per mm²; the N1 20SM's transistor count is listed as unknown.

Core configurations differ in several dimensions. The N1 20SM has 2560 shading units, 160 texture mapping units, and 24 raster output units. The A1000 has 2304 shading units, 72 TMUs, and 32 ROPs. The N1 20SM thus holds a 256-shader advantage and more than double the TMU count, while the A1000 counters with 8 more ROPs. Ray tracing cores number 20 on the N1 20SM versus 18 on the A1000, and tensor cores stand at 80 versus 72.

Clock behavior separates the two significantly. The N1 20SM runs a base clock of 741 MHz and boosts to 2346 MHz, a 1605 MHz range. The A1000 starts at 727 MHz and boosts to 1462 MHz, a much narrower 735 MHz range. The N1 20SM's higher boost clock contributes directly to its compute advantages. Memory clocks also differ: the N1 20SM uses 1067 MHz with 8.5 Gbps effective transfer, while the A1000 uses 1500 MHz with 12 Gbps effective.

Memory subsystems are built for different purposes. The N1 20SM carries 128 GB of LPDDR5X on a 256-bit bus, yielding 273.2 GB/s bandwidth. The A1000 has 8 GB of GDDR6 on a 128-bit bus, producing 192.0 GB/s. The N1 20SM's 16x memory capacity and 1.4x bandwidth advantage point to data-heavy IGP workloads, while the A1000's smaller pool suits conventional graphics tasks.

Interface and power delivery also diverge. The N1 20SM is an IGP with PCIe 5.0 x16 and no power connectors, indicating it draws power from the host motherboard. The A1000 is a single-slot card with PCIe 4.0 x8, no external power connectors, a 50 W TDP, and a suggested PSU of 250 W. The A1000 measures 163 mm in length and 69 mm in height. The N1 20SM has no recorded dimensions.

API support presents the clearest functional gap. The A1000 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1 20SM lists N/A across all three. The A1000 also offers four mini-DisplayPort 1.4a outputs versus a single HDMI on the N1 20SM. Release dates place the A1000 in April 2024, while the N1 20SM arrived in May 2026. The A1000's predecessor is Quadro Turing and its successor is Workstation Ada; the N1 20SM has no recorded predecessor or successor.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between the N1 20SM and the RTX A1000. The head-to-head array is empty, and win counts are zero for both sides. The only recorded performance data belongs to the A1000 across three tests.

In 3DMark Steel Nomad DX12, the A1000 scores 969. Its Geekbench OpenCL result is 52078, and its Geekbench Vulkan result is 49574. These three scores produce an average benchmark score of 34207, placing the A1000 in the 79th percentile of all GPUs. The N1 20SM has no benchmark entries and a 50th percentile ranking, with an average score of zero.

The A1000's nearest rivals in the database provide context for its standing. The NVIDIA RTX A2000 12 GB scores 34154, which is 0.2% behind the A1000. The AMD Radeon RX 560 XT also scores 34133, 0.2% behind. The NVIDIA TITAN V scores 34355, putting it 0.4% ahead of the A1000. The AMD Radeon RX 480 scores 33997, 0.6% behind. These deltas are small, indicating the A1000 sits in a tightly contested performance band rather than a dominant or disadvantaged position.

Without head-to-head data, the comparison relies on specification-derived expectations. The N1 20SM's FP32 throughput of 12.01 TFLOPS versus the A1000's 6.737 TFLOPS suggests a substantial compute advantage for the N1 20SM. Its texture rate of 375.4 GTexel/s versus 105.3 GTexel/s reinforces that lead. Pixel rate favors the N1 20SM by a narrower margin: 56.30 GPixel/s against 46.78 GPixel/s, a 20% gap.

Memory bandwidth similarly favors the N1 20SM at 273.2 GB/s versus 192.0 GB/s, a 42% advantage. The N1 20SM's 128 GB capacity versus 8 GB is the largest single specification gap, suggesting workloads that exceed 8 GB will not run on the A1000 at all. However, the A1000's API support and benchmark presence mean it can actually execute standard graphics workloads, while the N1 20SM's N/A API listings raise questions about its software ecosystem.

The absence of N1 20SM benchmarks means the database records no evidence of its real-world performance. Its 50th percentile ranking reflects a lack of data rather than measured performance. The A1000's 79th percentile is derived from actual test scores.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The N1 20SM delivers 12.01 TFLOPS FP32, while the RTX A1000 delivers 6.737 TFLOPS. The N1 20SM's rating is approximately 78% higher.

Q: How much memory does each GPU offer?

A: The N1 20SM has 128 GB of LPDDR5X on a 256-bit bus, while the RTX A1000 has 8 GB of GDDR6 on a 128-bit bus. The N1 20SM's capacity is 16 times larger.

Q: What API support does each GPU provide?

A: The RTX A1000 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1 20SM lists N/A for DirectX, OpenGL, and Vulkan in the database.

Q: What is the RTX A1000's benchmark standing?

A: The A1000 has an average benchmark score of 34207 from three tests: 969 in 3DMark Steel Nomad DX12, 52078 in Geekbench OpenCL, and 49574 in Geekbench Vulkan. It ranks in the 79th percentile of all GPUs.

Q: How does the RTX A1000 compare to its nearest rivals?

A: The A1000 scores 0.2% above the RTX A2000 12 GB, 0.2% above the AMD Radeon RX 560 XT, 0.4% below the NVIDIA TITAN V, and 0.6% above the AMD Radeon RX 480.

Q: What are the power requirements for each GPU?

A: The RTX A1000 has a 50 W TDP and a suggested PSU of 250 W, with no power connectors required. The N1 20SM's TDP is listed as unknown, and it also uses no power connectors as an IGP.

Where Each One Wins

The N1 20SM wins decisively in raw compute specifications. Its FP32 throughput of 12.01 TFLOPS versus 6.737 TFLOPS gives it a clear edge for compute-heavy tasks. Texture processing favors it heavily: 375.4 GTexel/s against 105.3 GTexel/s, a 3.6x advantage. The 273.2 GB/s memory bandwidth versus 192.0 GB/s supports larger data movement. The 128 GB memory capacity versus 8 GB means the N1 20SM can hold datasets the A1000 cannot approach. Its 2346 MHz boost clock versus 1462 MHz also indicates higher sustained frequency headroom.

The RTX A1000 wins in software compatibility and practical deployment. Its DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support make it usable across standard graphics and workstation applications, while the N1 20SM has no recorded API support. The A1000's four mini-DisplayPort 1.4a outputs enable multi-monitor configurations, compared to the N1 20SM's single HDMI. The A1000 also has actual benchmark results proving its performance, while the N1 20SM has none recorded.

The A1000 additionally wins on power efficiency and physical footprint. Its 50 W TDP with a suggested 250 W PSU makes it a low-power, single-slot card. The N1 20SM's TDP is unknown, but as an IGP it carries no power connectors and relies on the host platform. The A1000's PCIe 4.0 x8 interface is older than the N1 20SM's PCIe 5.0 x16, but both use connectorless power delivery.

The A1000 has more ROPs at 32 versus 24, which benefits rasterization-bound workloads. Its 8 GB GDDR6 memory, while smaller, uses a higher effective transfer rate of 12 Gbps versus 8.5 Gbps on the N1 20SM. The A1000 also has a recorded predecessor (Quadro Turing) and successor (Workstation Ada), indicating a defined product lineage, while the N1 20SM has neither.

For workstation users who need established APIs, multi-display output, and verified performance, the RTX A1000 is the practical selection. For applications that demand massive memory capacity and maximum compute throughput within an IGP form factor, the N1 20SM's specifications point to superior capability, pending benchmark confirmation. The database records no head-to-head tests, so the N1 20SM's advantage remains theoretical until measurement data appears.