NVIDIA GeForce RTX 4090 Mobile vs NVIDIA RTX A2000 Comparison

The NVIDIA RTX A2000 and NVIDIA GeForce RTX 4090 Mobile represent two distinct design philosophies: one is a low-profile, power-efficient workstation tool, while the other is a mobile powerhouse. The benchmark data available for direct comparison is limited, but it decisively favors the newer, larger GeForce part. In the two head-to-head tests, the RTX 4090 Mobile wins both, leaving the RTX A2000 with zero victories.

Head-to-Head Benchmarks

The most striking disparity emerges in the Geekbench OpenCL test. The RTX 4090 Mobile scores 180,831, while the RTX A2000 manages only 67,695. This represents a delta of -62.6% for the A2000, meaning the mobile part is roughly 2.7 times faster in raw compute throughput. This is not a marginal improvement; it is a generational chasm. The RTX 4090 Mobile's advantage is equally pronounced in the Geekbench Vulkan test, where it posts 170,774 against the A2000's 69,089, a delta of -59.5%. In both API tests, the Ada Lovelace chip demonstrates a massive lead in both OpenCL and Vulkan workloads.

The RTX 4090 Mobile's average benchmark score of 43,667 places it in the 84th percentile of all GPUs, with its nearest rival being the NVIDIA Quadro M6000 (43,301), from which it is just 0.8% ahead. Interestingly, the RTX A2000 has a higher average score of 46,043, placing it in the 85th percentile, and its closest competitor is the AMD Radeon RX 5600M (46,601), which is -1.2% behind the A2000. This is a curious inversion: the A2000 has a higher average score across a broader set of tests, yet loses the specific head-to-head matchups by enormous margins. The data suggests the A2000's average is buoyed by its performance in tests not shared with the RTX 4090 Mobile, whereas the two Geekbench tests where they compete are heavily skewed toward the newer architecture. The RTX 4090 Mobile's specific benchmark results also include Passmark scores (G3D: 27,212; GPU Compute: 12,347), which are not available for the A2000, further complicating direct aggregate comparisons.

FAQ

Q: Which GPU wins the direct benchmark comparisons?

A: The NVIDIA GeForce RTX 4090 Mobile wins both head-to-head tests. It scores 180,831 to the RTX A2000's 67,695 in Geekbench OpenCL, and 170,774 to 69,089 in Geekbench Vulkan.

Q: How much faster is the RTX 4090 Mobile in Vulkan?

A: The RTX 4090 Mobile is approximately 59.5% faster than the RTX A2000 in Geekbench Vulkan, as indicated by the deltaPct of -59.5% for the A2000.

Q: Does the RTX A2000 have any performance advantages?

A: Based on the provided data, no. The RTX A2000 wins zero head-to-head benchmarks. However, its average benchmark score of 46,043 is higher than the RTX 4090 Mobile's average of 43,667, suggesting it may have strengths in other workloads not covered in the direct comparison.

Q: What is the difference in their overall performance percentiles?

A: The RTX A2000 sits in the 85th percentile of all GPUs, while the RTX 4090 Mobile sits in the 84th percentile. This indicates that despite losing the direct matchups, the A2000's overall performance profile is competitive with the mobile part.

Q: Which GPU has a higher memory bandwidth?

A: The RTX 4090 Mobile has a significantly higher memory bandwidth of 576.0 GB/s, compared to the RTX A2000's 288.0 GB/s.

Q: What is the transistor density difference?

A: The RTX 4090 Mobile has a transistor density of 121.1M / mm², which is nearly three times higher than the RTX A2000's 43.5M / mm².

Architecture Differences

The two GPUs are built on entirely different architectures and manufacturing processes. The RTX A2000 is based on the Ampere architecture, specifically the GA106 chip, fabricated on an 8 nm process at Samsung. In contrast, the RTX 4090 Mobile uses the Ada Lovelace architecture with the AD103 chip, built on a 5 nm process at TSMC. This process shrink is a primary driver of the performance gap. The RTX 4090 Mobile packs 45,900 million transistors into a 379 mm² die, yielding a density of 121.1M / mm². The RTX A2000 contains 12,000 million transistors on a 276 mm² die, with a density of 43.5M / mm². The newer chip is not only physically larger but also far more densely packed.

The core configurations reflect this architectural leap. The RTX 4090 Mobile has 9,728 shading units, 304 texture mapping units (TMUs), and 112 render output units (ROPs). The RTX A2000 has 3,328 shading units, 104 TMUs, and 48 ROPs. The RTX 4090 Mobile also has significantly more dedicated hardware for ray tracing and AI, with 76 RT cores and 304 tensor cores, compared to the RTX A2000's 26 RT cores and 104 tensor cores. The FP32 compute output is equally lopsided: the RTX 4090 Mobile delivers 32.98 TFLOPS, while the RTX A2000 delivers 7.987 TFLOPS. Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, but the Ada Lovelace architecture is a full generation newer.

Specification Differences

The most obvious specification difference is the memory configuration. The RTX A2000 offers 6 GB of GDDR6 on a 192-bit bus, providing 288.0 GB/s of bandwidth. The RTX 4090 Mobile doubles the capacity to 16 GB of GDDR6, uses a wider 256-bit bus, and nearly doubles the bandwidth to 576.0 GB/s. The memory clock also differs, with the A2000 running at 1500 MHz (12 Gbps effective) and the RTX 4090 Mobile at 2250 MHz (18 Gbps effective).

Clock speeds are also radically different. The RTX A2000 has a base clock of 562 MHz and a boost clock of 1200 MHz. The RTX 4090 Mobile runs at a base clock of 1335 MHz and boosts to 1695 MHz. Power consumption is a major differentiator: the RTX A2000 has a TDP of 70 W, while the RTX 4090 Mobile has a TDP of 120 W. The physical form factor also diverges, with the A2000 being a dual-slot card (167 mm long, 69 mm high) and the RTX 4090 Mobile being an IGP (integrated graphics processor) for portable devices. The A2000 uses 4x mini-DisplayPort 1.4a outputs, while the RTX 4090 Mobile's display outputs are portable device dependent. The A2000 is end-of-life, released in 2021, while the RTX 4090 Mobile is active, released in 2023. The A2000 has a launch MSRP of 449 USD, while the RTX 4090 Mobile has no listed MSRP.

The Verdict

The data paints a clear picture for raw performance: the NVIDIA GeForce RTX 4090 Mobile is the undisputed winner in the head-to-head benchmarks, with massive leads in both OpenCL and Vulkan. For any application that relies on these APIs, the RTX 4090 Mobile is the superior choice. Its 16 GB of memory and 576.0 GB/s bandwidth also provide a substantial advantage for large datasets and high-resolution textures.

However, the RTX A2000 is not without merit. Its lower TDP of 70 W, compared to the RTX 4090 Mobile's 120 W, makes it a far more power-efficient option for compact workstation builds. Its higher average benchmark score and superior percentile ranking suggest that in certain specialized workloads not captured by the head-to-head tests, the A2000 may hold its own. It is also a dual-slot card with dedicated display outputs, making it a plug-and-play solution for desktop workstations, whereas the RTX 4090 Mobile is an IGP for laptops.

The verdict is context-dependent. Data centers and professionals requiring maximum compute density should choose the RTX 4090 Mobile for its 32.98 TFLOPS of FP32 power. Users needing a low-profile, end-of-life workstation card with a specific launch MSRP of 449 USD may still find the RTX A2000 adequate for lighter duties, but the benchmark results indicate a clear performance hierarchy. The RTX 4090 Mobile is the performance champion; the RTX A2000 is the efficiency-focused workstation part. The choice hinges on whether the priority is raw speed or form-factor and power constraints.