NVIDIA GeForce RTX 4090 vs NVIDIA RTX A1000 Mobile Comparison

Head-to-Head Benchmarks

The benchmark database records only two shared test results for this pairing, and both belong decisively to the NVIDIA GeForce RTX 4090. In Geekbench OpenCL, the RTX 4090 scores 255,416 against the RTX A1000 Mobile's 48,703, a delta of 424.4%. The Vulkan result is even more lopsided: 271,631 versus 46,782, a 480.6% advantage. These are not marginal gaps; the desktop card outperforms the mobile part by a factor of roughly five in compute workloads.

The RTX 4090's average benchmark score of 60,347 places it at the 88th percentile among all GPUs in the database, while the RTX A1000 Mobile's average of 47,743 sits at the 85th percentile. Despite the enormous head-to-head deltas, the percentile rankings are surprisingly close. This reflects the different benchmark pools each card participates in. The RTX 4090 is measured against other desktop-class parts in demanding tests like 3DMark Steel Nomad DX12, where it scores 9,223. The A1000 Mobile lacks entries for those heavier workloads, so its percentile is derived from a narrower set of mobile-oriented results.

The RTX 4090 also holds a strong position against its own nearest rivals. It trails the AMD Radeon Pro W6600M by 2.5% in average score, but leads the Intel Arc Pro A60 by a virtual tie (0% delta), the AMD Radeon Pro Vega 48 by 0.3%, and the AMD Radeon PRO V710 by 2.9%. For the RTX A1000 Mobile, the competitive picture is tighter: it sits 1.5% behind the AMD Radeon RX 6800 XT, and leads the AMD Radeon RX 6550M by 2.2%, the Intel Arc A530M by 2.4%, and the AMD Radeon RX 5600M by 2.5%. The mobile card is clearly positioned in a mid-range compute tier, while the desktop card operates near the top of the desktop spectrum.

Where Each One Wins

The RTX 4090 wins every recorded head-to-head benchmark, but the useful question is what those wins imply for different use cases. The Geekbench Vulkan result, 271,631 versus 46,782, suggests a massive advantage in cross-platform graphics and compute APIs commonly used in game engines and scientific visualization. The OpenCL result, 255,416 versus 48,703, points to similar dominance in OpenCL-based workloads, which include video encoding, physics simulation, and many professional rendering pipelines.

The RTX A1000 Mobile's role is not about winning compute contests. Its 60 W TDP and IGP slot width indicate a design for portable workstations where power draw and physical size are constrained. The database shows it handles the same API families, DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, but at a fraction of the throughput. For lightweight mobile tasks such as CAD viewing, basic GPU-accelerated video playback, or entry-level 3D work, the A1000 Mobile provides a foundation without the thermal and power overhead of a full desktop card.

The RTX 4090's additional benchmark records, absent from the A1000 Mobile's profile, reveal its broader strengths. It posts 38,194 in PassMark G3D, 26,613 in PassMark GPU Compute, and 1,299 in PassMark G2D. Those numbers do not have direct comparisons here, but they indicate a card that excels across rasterization, compute, and 2D tasks alike. The A1000 Mobile's dataset is too sparse to claim any category victory.

Architecture Differences

The two GPUs come from different architectural generations and are built on different processes. The RTX 4090 uses the AD102 chip, built on Ada Lovelace architecture, fabricated by TSMC on a 5 nm process. It packs 76,300 million transistors into a 609 mm² die, yielding a transistor density of 125.3 million per square millimeter. The RTX A1000 Mobile uses the GA107 chip, built on Ampere architecture, fabricated by Samsung on an 8 nm process. It contains 8,700 million transistors on a 200 mm² die, with a density of 43.5 million per square millimeter. The density gap, 125.3M versus 43.5M per mm², is a direct consequence of the process node difference and explains much of the performance disparity.

Shader resources follow the same pattern. The RTX 4090 has 16,384 shading units, 512 texture mapping units, 176 ROPs, 128 RT cores, and 512 tensor cores. The RTX A1000 Mobile has 2,048 shading units, 64 TMUs, 32 ROPs, 16 RT cores, and 64 tensor cores. Every one of these counts is eight times larger on the desktop card, which aligns with the roughly fivefold performance gap observed in benchmarks; not all workloads scale perfectly with core counts, but the resource advantage is overwhelming.

Memory architecture also diverges sharply. The RTX 4090 uses 24 GB of GDDR6X on a 384 bit bus, delivering 1.01 TB/s of bandwidth. The RTX A1000 Mobile uses 4 GB of GDDR6 on a 128 bit bus, delivering 176.0 GB/s. Clock speeds tell a similar story: the RTX 4090 runs at a 2235 MHz base and 2520 MHz boost, while the A1000 Mobile operates at 630 MHz base and 1140 MHz boost. Even the memory clock differs, with the RTX 4090's 1313 MHz (21 Gbps effective) far exceeding the A1000 Mobile's 1375 MHz (11 Gbps effective) in effective transfer rate.

Power and physical design separate the two completely. The RTX 4090 has a 450 W TDP, requires a triple-slot cooler, uses a 1x 16-pin power connector, and needs an 850 W suggested PSU. It measures 304 mm in length, 137 mm in height, and 61 mm in width. The RTX A1000 Mobile has a 60 W TDP, uses an IGP form factor, requires no power connectors, and has no listed dimensions. The bus interface also differs: PCIe 4.0 x16 for the desktop card, PCIe 4.0 x8 for the mobile part. Display outputs differ as well, with the RTX 4090 offering 1x HDMI 2.1 and 3x DisplayPort 1.4a, while the A1000 Mobile's outputs are listed as "Portable Device Dependent."

FAQ

Q: Which card has more ray tracing hardware?

A: The RTX 4090 has 128 RT cores, while the RTX A1000 Mobile has 16 RT cores. The desktop card has eight times the ray tracing hardware of the mobile part.

Q: How does the memory bandwidth compare?

A: The RTX 4090 delivers 1.01 TB/s over a 384 bit bus with 24 GB of GDDR6X. The RTX A1000 Mobile delivers 176.0 GB/s over a 128 bit bus with 4 GB of GDDR6. The desktop card has roughly 5.7 times the bandwidth.

Q: Are both cards still in production?

A: No. Both are listed as end-of-life in the database. The RTX 4090 was released on September 19, 2022, and the RTX A1000 Mobile followed on March 29, 2022.

Q: What is the transistor count for each GPU?

A: The RTX 4090's AD102 chip contains 76,300 million transistors. The RTX A1000 Mobile's GA107 chip contains 8,700 million transistors.

Q: Do both support the same graphics APIs?

A: Yes. Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What are the power requirements for each?

A: The RTX 4090 has a 450 W TDP and a suggested PSU of 850 W. The RTX A1000 Mobile has a 60 W TDP and requires no power connectors, with no suggested PSU listed.

Specification Differences

The table below lists only the fields where the two cards differ, based on the database records.

| Field | NVIDIA GeForce RTX 4090 | NVIDIA RTX A1000 Mobile |

| --- | --- | --- |

| Architecture | Ada Lovelace | Ampere |

| Process Node | 5 nm | 8 nm |

| Foundry | TSMC | Samsung |

| Transistors | 76,300 million | 8,700 million |

| Die Size | 609 mm² | 200 mm² |

| Transistor Density | 125.3M / mm² | 43.5M / mm² |

| Base Clock | 2235 MHz | 630 MHz |

| Boost Clock | 2520 MHz | 1140 MHz |

| Memory Clock | 1313 MHz (21 Gbps effective) | 1375 MHz (11 Gbps effective) |

| Memory Size | 24 GB | 4 GB |

| Memory Type | GDDR6X | GDDR6 |

| Memory Bus Width | 384 bit | 128 bit |

| Memory Bandwidth | 1.01 TB/s | 176.0 GB/s |

| Shading Units | 16,384 | 2,048 |

| TMUs | 512 | 64 |

| ROPs | 176 | 32 |

| RT Cores | 128 | 16 |

| Tensor Cores | 512 | 64 |

| Pixel Rate | 443.5 GPixel/s | 36.48 GPixel/s |

| Texture Rate | 1,290.2 GTexel/s | 72.96 GTexel/s |

| FP32 | 82.58 TFLOPS | 4.669 TFLOPS |

| FP16 | 82.58 TFLOPS (1:1) | 4.669 TFLOPS (1:1) |

| TDP | 450 W | 60 W |

| Slot Width | Triple-slot | IGP |

| Power Connectors | 1x 16-pin | None |

| Suggested PSU | 850 W | None |

| Bus Interface | PCIe 4.0 x16 | PCIe 4.0 x8 |

| Display Outputs | 1x HDMI 2.1, 3x DisplayPort 1.4a | Portable Device Dependent |

| Dimensions | 304 mm x 137 mm x 61 mm | Not listed |

| Release Date | 2022-09-19 | 2022-03-29 |

| Predecessor | GeForce 30 | Quadro Turing-M |

| Successor | GeForce 50 | Ada-MW |

The Verdict

The data separates these two cards into entirely different product categories. The RTX 4090 is a desktop flagship with a 450 W TDP, triple-slot cooler, and 82.58 TFLOPS of FP32 throughput. It dominates every shared benchmark, achieving a 424.4% lead in OpenCL and a 480.6% lead in Vulkan. Its average score of 60,347 places it at the 88th percentile, and it competes directly with professional desktop GPUs like the AMD Radeon Pro W6600M, which leads it by only 2.5%.

The RTX A1000 Mobile is a 60 W integrated mobile part with 4.669 TFLOPS of FP32 throughput and 4 GB of VRAM. It cannot match the desktop card in any measured workload, but its 85th percentile ranking among all GPUs shows it is not a weak performer in its own mobile context. Its nearest rivals, including the AMD Radeon RX 6800 XT and Intel Arc A530M, sit within 2.5% of its average score, indicating a competitive mid-range mobile segment.

For users selecting between these two, the decision is dictated by physical constraints rather than raw performance. The RTX 4090 is the clear choice for any desktop workstation or gaming rig where 450 W of power and a 304 mm long, triple-slot card can be accommodated. The RTX A1000 Mobile is the only sensible option for a portable device, given its IGP form factor, lack of power connectors, and 60 W thermal envelope. The benchmark results confirm the expected hierarchy: the desktop card is roughly five times faster in compute, but the mobile card exists to serve a completely different set of requirements.