AMD Radeon RX 7800 XT vs NVIDIA N1X 48SM Comparison

Head-to-Head Benchmarks

The recorded data contains no direct head-to-head benchmark comparisons between the AMD Radeon RX 7800 XT and the NVIDIA N1X 48SM. The head-to-head benchmark array is empty, and the win counters for both parts sit at zero. The AMD Radeon RX 7800 XT carries an average benchmark score of 11,627 across ten recorded tests, while the NVIDIA N1X 48SM has no benchmark entries and an average score of zero.

The RX 7800 XT shows its strongest single-test result in Geekbench Vulkan with a score of 54,228, followed by Passmark G3D at 24,176 and Geekbench OpenCL at 18,290. In compute-heavy workloads, the Passmark GPU Compute score reaches 13,473. The 3DMark Steel Nomad DX12 result comes in at 4,157. DirectX legacy tests show Passmark DX9 at 304, DX11 at 249, and DX10 at 121, while Passmark DX12 records 93. The 2D workload score sits at 1,177.

The NVIDIA N1X 48SM has no recorded benchmark results in the database. Its percentile ranking versus all GPUs is 50, compared to the RX 7800 XT's percentile of 51. The RX 7800 XT's average score of 11,627 places it in a tight cluster of rivals: the NVIDIA GeForce GTX 1660 averages 11,680 (0.5% higher), the AMD Radeon RX 6500 XT averages 11,842 (1.8% higher), the AMD Radeon Pro 5500M averages 11,528 (0.9% lower), and the NVIDIA Tesla K20c averages 11,479 (1.3% lower). The RX 7800 XT sits essentially at parity with these four cards, within a 1.8% band either direction.

Without a benchmark suite for the N1X 48SM, the data cannot establish a direct performance delta between the two parts. The only quantitative comparison available is the percentile gap: 51 versus 50, a one-point edge for the AMD card. The N1X 48SM does deliver a higher texture rate on paper at 900.9 GTexel/s versus 583.2 GTexel/s for the RX 7800 XT, but no measured workload confirms what that means in practice.

The Verdict

From the recorded data, the AMD Radeon RX 7800 XT is the only one of the two with measurable benchmark results. Its 51st percentile across all GPUs and average score of 11,627 give it a concrete performance position, one that places it within 1.8% of four comparable cards in the database. The NVIDIA N1X 48SM has no benchmark entries, an average score of zero, and a 50th percentile placement that reflects an absence of data rather than measured capability.

The data indicates that any buyer comparison must lean on the RX 7800 XT's recorded results. The N1X 48SM is a Blackwell IGP part with a 2026 release date, a PCIe 5.0 x16 interface, and 128 GB of LPDDR5X memory, but the database contains no performance measurements for it. The RX 7800 XT, by contrast, has ten discrete benchmark scores across DirectX 9 through 12, Vulkan, OpenCL, compute, and 2D tests.

The verdict from the data is straightforward: the RX 7800 XT is the tested, measured part, while the N1X 48SM remains an unquantified entry. Users who require benchmark-verified performance have only one option with data to support it. The N1X 48SM cannot be ranked on performance from the available records.

Architecture Differences

The two parts come from different architectural lineages. The AMD Radeon RX 7800 XT uses the Navi 32 chip built on RDNA 3.0 architecture, part of the Navi III (RX 7000) generation, with the codename Wheat Nas. It is manufactured on a 5 nm process at TSMC, with 28,100 million transistors on a 346 mm² die, giving a transistor density of 81.2 million per mm². Its predecessor is Navi II and its successor is Navi IV.

The NVIDIA N1X 48SM uses the GB20B chip built on Blackwell 2.0 architecture, part of the Blackwell IGP (N1x) generation, with no codename recorded. It is also manufactured on a 5 nm process at TSMC, with a die size of 382 mm², but its transistor count is listed as unknown and no transistor density is recorded.

The RX 7800 XT implements 3,840 shading units, 240 texture mapping units, 96 ROPs, and 60 ray tracing cores. It has no tensor cores listed. The N1X 48SM carries 6,144 shading units, 384 texture mapping units, 48 ROPs, and 48 ray tracing cores, along with 192 tensor cores. The NVIDIA part therefore has 60% more shading units and 60% more TMUs, but exactly half the ROPs of the AMD card.

The API support differs sharply. The RX 7800 XT supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The N1X 48SM lists all three APIs as N/A. This is a significant architectural distinction: the AMD part exposes full modern graphics APIs, while the NVIDIA IGP part does not record any DirectX, OpenGL, or Vulkan support.

The process node is identical at 5 nm TSMC for both, but the die sizes differ, with the N1X 48SM being 36 mm² larger. The transistor information is incomplete for the NVIDIA part, so density comparisons cannot be made.

Specification Differences

The AMD Radeon RX 7800 XT has a base clock of 1295 MHz, a boost clock of 2430 MHz, and a game clock of 2124 MHz. Its memory clock is 2438 MHz with 19.5 Gbps effective. The NVIDIA N1X 48SM has a base clock of 741 MHz and a boost clock of 2346 MHz, with no game clock recorded. Its memory clock is 1067 MHz with 8.5 Gbps effective. The RX 7800 XT runs a higher base clock by 554 MHz and a higher boost clock by 84 MHz.

Memory configurations differ substantially. The RX 7800 XT uses 16 GB of GDDR6 on a 256-bit bus, delivering 624.1 GB/s of bandwidth. The N1X 48SM uses 128 GB of LPDDR5X on a 256-bit bus, delivering 273.2 GB/s. The NVIDIA part has eight times the capacity but less than half the bandwidth. Both use a 256-bit bus width.

Compute rates favor the AMD card in FP32 and FP16. The RX 7800 XT delivers 37.32 TFLOPS in both FP32 and FP16 (1:1), while the N1X 48SM delivers 28.83 TFLOPS in both. The AMD part is 29.4% higher in each. Pixel rate favors the RX 7800 XT at 233.3 GPixel/s versus 112.6 GPixel/s for the NVIDIA part. Texture rate favors the N1X 48SM at 900.9 GTexel/s versus 583.2 GTexel/s.

Power and physical specifications differ. The RX 7800 XT has a TDP of 263 W, is dual-slot, requires 2x 8-pin power connectors, and suggests a 600 W PSU. The N1X 48SM has an unknown TDP, is an IGP form factor, uses no power connectors, and has no suggested PSU. The RX 7800 XT measures 267 mm in length, 111 mm in height, and 50 mm in width. The N1X 48SM has no recorded dimensions.

The bus interface differs: PCIe 4.0 x16 for the AMD part versus PCIe 5.0 x16 for the NVIDIA part. Display outputs differ: the RX 7800 XT has 1x HDMI 2.1a and 3x DisplayPort 2.1, while the N1X 48SM has 1x HDMI only. The RX 7800 XT launched on 2023-09-05 with a launch MSRP of 499 USD. The N1X 48SM launches on 2026-05-31 with no launch MSRP recorded. Both are listed as Active in production status.

FAQ

Q: Which GPU has a higher FP32 compute throughput?

A: The AMD Radeon RX 7800 XT delivers 37.32 TFLOPS in FP32, while the NVIDIA N1X 48SM delivers 28.83 TFLOPS. The AMD part is 29.4% higher.

Q: How much memory does each GPU have?

A: The RX 7800 XT has 16 GB of GDDR6, while the N1X 48SM has 128 GB of LPDDR5X. Both use a 256-bit memory bus.

Q: Which GPU has higher memory bandwidth?

A: The RX 7800 XT achieves 624.1 GB/s, while the N1X 48SM achieves 273.2 GB/s. The AMD part has more than double the bandwidth despite having less memory.

Q: Does the NVIDIA N1X 48SM support DirectX 12?

A: No. The N1X 48SM lists DirectX as N/A in the database, as well as OpenGL and Vulkan. The RX 7800 XT supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What is the average benchmark score for each GPU?

A: The RX 7800 XT has an average benchmark score of 11,627 across ten tests. The N1X 48SM has an average score of 0, with no benchmark entries recorded.

Q: How do the transistor counts compare?

A: The RX 7800 XT contains 28,100 million transistors on a 346 mm² die. The N1X 48SM has an unknown transistor count on a 382 mm² die.

Where Each One Wins

The AMD Radeon RX 7800 XT wins in every category where measured data exists. Its FP32 and FP16 throughput of 37.32 TFLOPS exceeds the N1X 48SM's 28.83 TFLOPS. Its pixel rate of 233.3 GPixel/s more than doubles the 112.6 GPixel/s of the NVIDIA part. Its memory bandwidth of 624.1 GB/s is 2.3 times the 273.2 GB/s of the N1X 48SM. Its base clock of 1295 MHz and boost clock of 2430 MHz both exceed the N1X 48SM's 741 MHz and 2346 MHz.

The RX 7800 XT also wins on API support, with DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 all recorded, while the N1X 48SM lists N/A for all three. The AMD part has a higher ROP count at 96 versus 48, and it has a recorded TDP of 263 W with a defined power delivery setup, whereas the N1X 48SM's TDP is unknown. The RX 7800 XT has a launch MSRP of 499 USD, while the N1X 48SM has none recorded.

The NVIDIA N1X 48SM wins on texture rate, delivering 900.9 GTexel/s against 583.2 GTexel/s for the AMD card. It also has more shading units (6,144 versus 3,840), more TMUs (384 versus 240), and 192 tensor cores while the RX 7800 XT has none listed. It holds eight times the memory capacity at 128 GB versus 16 GB, and it uses the newer PCIe 5.0 x16 interface versus PCIe 4.0 x16. Its die is larger at 382 mm² versus 346 mm², and it is a newer product with a 2026 release date versus 2023.

For use cases, the RX 7800 XT suits any workload that depends on measured rasterization, pixel throughput, memory bandwidth, or standard graphics APIs. Its ten benchmark scores cover DirectX 9 through 12, Vulkan, OpenCL, compute, and 2D tests, giving it a documented profile. The N1X 48SM suits use cases that require very large memory capacity, tensor core acceleration, or maximum texture fill rate, but the database contains no performance measurements to confirm its behavior in those roles. The texture rate advantage and the tensor core count are the only recorded strengths for the NVIDIA part, and neither has a benchmark score attached to it.