NVIDIA GeForce RTX 2080 vs NVIDIA RTX A4000 Mobile Comparison

Head-to-Head Benchmarks

The benchmark results present a clear split between these two NVIDIA GPUs. The NVIDIA GeForce RTX 2080 secures a decisive victory in the head-to-head comparison, winning eight of the nine benchmark tests. The only exception is Geekbench OpenCL, where the NVIDIA RTX A4000 Mobile takes the lead by a margin of 6% (97,178 vs. 91,313). That single win, however, does little to offset the RTX 2080's dominance across the broader test suite.

The most dramatic disparity appears in Geekbench Vulkan, where the RTX 2080 scores 107,797 against the A4000 Mobile's 73,002. This represents a 47.7% advantage, the largest delta recorded in any test. The RTX 2080 also excels in legacy DirectX workloads, posting a 42% lead in Passmark DirectX 9 (223 vs. 157) and a 29.5% lead in Passmark DirectX 10 (136 vs. 105). These results indicate that the desktop card retains a substantial edge in older API scenarios, likely due to its higher raw shading throughput and more favorable clock behavior.

In modern API tests, the gap narrows but remains firmly in the RTX 2080's favor. Passmark DirectX 11 shows a 24.4% advantage (158 vs. 127), while DirectX 12 yields a more modest 9.1% lead (72 vs. 66). The compute-oriented Passmark GPU Compute test also favors the RTX 2080, with a 23.1% margin (7,872 vs. 6,394). The 2D performance gap is even more pronounced: Passmark G2D shows a 55% advantage for the RTX 2080 (907 vs. 585), a remarkable spread that suggests the desktop part's memory subsystem and rasterization pipeline deliver disproportionate gains in 2D workloads.

The overall 3D performance benchmark, Passmark G3D, reinforces the trend. The RTX 2080 scores 18,720, which is 26.5% higher than the A4000 Mobile's 14,796. This aligns with the average benchmark scores: the RTX 2080 averages 22,895 across all tests, while the A4000 Mobile averages 21,379. The RTX 2080 also holds a higher percentile ranking among all GPUs, sitting at the 68th percentile versus the A4000 Mobile's 66th.

Looking at nearest rivals, the RTX 2080's average score places it within 0.5% of the Intel Arc B580 (23,021), 0.7% of the AMD Radeon RX 580 2048SP (23,061), and 1.2% of the NVIDIA GeForce RTX 3080 (23,172). It sits 0.7% ahead of the NVIDIA GeForce RTX 4060 Mobile (22,729). The A4000 Mobile's average score, by contrast, is 0.7% ahead of the AMD Radeon HD 8970M (21,237), 1.1% ahead of the AMD Radeon RX Vega M GL (21,153), and 1.6% ahead of the NVIDIA GeForce RTX 5050 (21,035), while trailing the NVIDIA Quadro RTX 5000 (21,629) by 1.2%.

The Verdict

The data is unambiguous: the NVIDIA GeForce RTX 2080 is the stronger performer in nearly every measurable category. With eight wins out of nine head-to-head tests, it is the clear choice for users prioritizing raw graphics throughput, legacy API compatibility, and compute-heavy workloads. The 47.7% Vulkan advantage alone is enough to tip the scales, but the consistent 20-30% margins across DirectX 10, DirectX 11, G3D, and GPU Compute cement the verdict.

The NVIDIA RTX A4000 Mobile, however, is not without its merits. Its single win in Geekbench OpenCL (6% ahead) suggests that certain OpenCL compute tasks may run slightly faster on this part. Additionally, its architectural advantages in transistor density and FP32 throughput — 17.20 TFLOPS versus 10.07 TFLOPS — hint at theoretical compute headroom that does not translate into the benchmark results captured here. For users locked into OpenCL-based workflows, the A4000 Mobile deserves consideration. But for general-purpose graphics, gaming, or mixed API workloads, the RTX 2080 wins decisively.

Given the RTX 2080's 68th percentile ranking versus the A4000 Mobile's 66th, and the 1,516-point gap in average benchmark scores, the recommendation is straightforward. Pick the RTX 2080 unless your specific workload is dominated by OpenCL, in which case the A4000 Mobile's modest edge may justify its selection. The data does not support any other conclusion.

Architecture Differences

The two GPUs come from different Turing and Ampere generations, and the architectural gap is substantial. The RTX 2080 uses the TU104 chip built on TSMC's 12 nm process, packing 13,600 million transistors into a 545 mm² die. The A4000 Mobile uses the GA104 chip on Samsung's 8 nm process, with 17,400 million transistors in a smaller 392 mm² die. This yields a transistor density of 44.4M per mm² for the A4000 Mobile versus 25.0M per mm² for the RTX 2080 — a 77.6% density advantage for the mobile part.

Core counts tell a mixed story. The A4000 Mobile has 5,120 shading units, 160 TMUs, and 80 ROPs, significantly outpacing the RTX 2080's 2,944 shading units, 184 TMUs, and 64 ROPs. However, the RTX 2080 counters with 46 RT cores and 368 tensor cores, versus the A4000 Mobile's 40 RT cores and 160 tensor cores. The RTX 2080's higher TMU count (184 vs. 160) and superior texture rate (314.6 GTexel/s vs. 268.8 GTexel/s) help explain its benchmark dominance despite fewer shading units. The pixel rate also favors the A4000 Mobile on paper — 134.4 GPixel/s versus 109.4 GPixel/s — but this does not translate into a G3D win.

Clock speeds differ notably. The RTX 2080 runs at a 1,515 MHz base and 1,710 MHz boost, while the A4000 Mobile operates at 1,140 MHz base and 1,680 MHz boost. The desktop card's higher clocks, combined with its memory running at 1,750 MHz (14 Gbps effective), give it a bandwidth advantage of 448.0 GB/s versus the A4000 Mobile's 384.0 GB/s (1,500 MHz, 12 Gbps effective). Both cards feature 8 GB of GDDR6 memory on a 256-bit bus.

FP32 throughput strongly favors the A4000 Mobile at 17.20 TFLOPS, but FP16 performance is identical at 17.20 TFLOPS for the A4000 Mobile (1:1 ratio) versus 20.14 TFLOPS for the RTX 2080 (2:1 ratio). The RTX 2080's higher FP16 output reflects its Turing-era tensor core design, while the A4000 Mobile's Ampere architecture delivers balanced FP16/FP32. Power consumption is another differentiator: the RTX 2080 draws 215 W with a dual-slot cooler and 1x 6-pin + 1x 8-pin connectors, while the A4000 Mobile is rated at 115 W with no power connectors, reflecting its mobile-optimized design. The RTX 2080 offers PCIe 3.0 x16, while the A4000 Mobile uses PCIe 4.0 x16.

FAQ

Q: Which GPU wins more head-to-head benchmark tests?

A: The NVIDIA GeForce RTX 2080 wins 8 out of 9 tests, with the NVIDIA RTX A4000 Mobile winning only the Geekbench OpenCL test.

Q: What is the biggest benchmark margin between the two?

A: The largest delta is in Geekbench Vulkan, where the RTX 2080 leads by 47.7% (107,797 vs. 73,002).

Q: How do their average benchmark scores compare?

A: The RTX 2080 averages 22,895, while the A4000 Mobile averages 21,379, a difference of 1,516 points.

Q: Which GPU has higher FP32 throughput?

A: The RTX A4000 Mobile has higher FP32 at 17.20 TFLOPS, compared to the RTX 2080's 10.07 TFLOPS.

Q: What are the memory bandwidth values for each card?

A: The RTX 2080 has 448.0 GB/s bandwidth, while the A4000 Mobile has 384.0 GB/s, both using 8 GB GDDR6 on a 256-bit bus.

Q: How do their transistor densities compare?

A: The A4000 Mobile has a density of 44.4M transistors per mm², versus 25.0M per mm² for the RTX 2080.

Where Each One Wins

The NVIDIA GeForce RTX 2080 wins in the overwhelming majority of use-case scenarios. Its 47.7% Vulkan advantage makes it the preferred choice for Vulkan-based applications, which include many modern game engines and cross-platform graphics middleware. The 42% DirectX 9 and 29.5% DirectX 10 leads position it strongly for legacy software, emulation, and older game libraries. The 24.4% DirectX 11 and 9.1% DirectX 12 margins extend this advantage to current-generation gaming and productivity workloads. The 55% G2D lead is particularly relevant for desktop compositing, 2D design tools, and UI-heavy applications. The 23.1% GPU Compute advantage covers general compute offload, while the 26.5% G3D margin makes it the clear winner for mainstream 3D rendering and gaming.

The NVIDIA RTX A4000 Mobile wins only in the Geekbench OpenCL test, with a 6% margin (97,178 vs. 91,313). This makes it the better choice for OpenCL-specific compute pipelines, such as certain scientific computing, image processing, or machine learning inference workloads that rely heavily on OpenCL. Its higher FP32 throughput of 17.20 TFLOPS versus 10.07 TFLOPS suggests theoretical compute headroom that may benefit FP32-heavy applications, though the benchmark data does not confirm this advantage outside of OpenCL. The A4000 Mobile's lower 115 W TDP also implies it is designed for mobile or power-constrained environments, though the RTX 2080's 215 W desktop design offers no direct portability trade-off. For users who need OpenCL performance in a mobile form factor, the A4000 Mobile is the only choice. For everyone else, the data points squarely to the RTX 2080.