NVIDIA GeForce RTX 2080 SUPER vs NVIDIA GeForce RTX 3080 Mobile Comparison

Head-to-Head Benchmarks

The benchmark data presents a fascinating split between these two NVIDIA GPUs. The GeForce RTX 2080 SUPER wins 8 of the 10 head-to-head comparisons, yet the RTX 3080 Mobile takes the two most modern and demanding tests. This is not a simple generational sweep; it is a story about workload characteristics and architectural priorities.

Starting with the most decisive victory, the RTX 2080 SUPER dominates legacy DirectX workloads. In PassMark DirectX 9, it scores 227 against the mobile chip's 170, a commanding 33.5% advantage. That pattern continues across the older API tests: DirectX 10 shows a 16.7% lead (140 vs 120), DirectX 11 a 13% lead (165 vs 146), and DirectX 12 a narrower 4.2% lead (75 vs 72). These results suggest the desktop card's higher base and boost clocks, combined with its Turing architecture's mature driver optimization for legacy paths, translate into substantial wins where older rendering pipelines are involved.

The 2D performance gap is even more pronounced. PassMark G2D shows the RTX 2080 SUPER at 920 versus 637 for the RTX 3080 Mobile, a 44.4% difference. This is the single largest delta in the entire comparison. One might question whether this reflects the desktop card's dedicated display outputs and PCIe 3.0 interface versus the mobile chip's "Portable Device Dependent" output configuration, which inherently ties performance to the host laptop's implementation.

In raw 3D throughput, the RTX 2080 SUPER also holds a clear edge. PassMark G3D comes in at 19490 versus 16321, a 19.4% win. GPU compute follows suit with 8290 versus 7276, a 13.9% advantage. These are the classic rasterization and general compute metrics, and here the desktop card's 11.15 TFLOPS FP32 throughput and 348.5 GTexel/s texture rate appear to outmuscle the Ampere mobile chip's specifications, despite the latter's higher theoretical FP32 of 18.98 TFLOPS.

However, the narrative flips completely in the newest benchmark. In 3DMark Steel Nomad DX12, the RTX 3080 Mobile scores 2644 against 1882 for the RTX 2080 SUPER, a 28.8% swing in the opposite direction. This is a massive reversal. The GeekBench OpenCL result also favors the mobile part, at 104831 versus 99226, a 5.3% lead. These two wins suggest that under modern, heavily threaded DirectX 12 workloads and compute-oriented OpenCL tasks, the Ampere architecture's 6144 shading units and 18.98 TFLOPS FP32 capability finally assert themselves, overcoming the desktop card's clock speed and driver maturity advantages.

The Vulkan result adds another layer of nuance. Here, the RTX 2080 SUPER wins with 111284 versus 104066, a 6.9% lead. This indicates that while Ampere excels in some compute-heavy scenarios, Turing still holds its own in Vulkan's explicit multi-threading model. The data implies that the performance relationship is workload-dependent rather than strictly generational.

The average benchmark scores paint a tight overall picture: the RTX 2080 SUPER averages 24170, while the RTX 3080 Mobile averages 23628, a difference of about 2.3%. Both cards sit at the 69th percentile among all GPUs. The nearest rivals for the desktop card include the GTX 780 Ti (-0.3% delta), GTX 1630 (-0.4%), and RX 6800S (+0.4%), while the mobile chip's rivals include the GTX TITAN Z (-0.5%), RTX 3070 Ti Mobile (+0.5%), and RX 9070 (-1%). This clustering suggests that in aggregate, neither card dramatically outclasses the other; the differences emerge only when isolating specific test categories.

FAQ

Q: Which GPU wins the most benchmarks overall?

A: The NVIDIA GeForce RTX 2080 SUPER wins 8 of the 10 head-to-head comparisons, while the RTX 3080 Mobile wins only 2. However, the mobile chip's wins come in the 3DMark Steel Nomad DX12 test and GeekBench OpenCL, which are among the most modern and demanding workloads.

Q: How large is the performance gap in the 3DMark Steel Nomad DX12 test?

A: The RTX 3080 Mobile scores 2644 versus 1882 for the RTX 2080 SUPER, representing a 28.8% advantage for the mobile part. This is the largest margin of victory for either GPU in any benchmark.

Q: What is the biggest win for the RTX 2080 SUPER?

A: The largest win for the desktop card is in PassMark G2D, where it scores 920 against 637 for the mobile chip, a 44.4% delta. In 3D-specific tests, its biggest win is PassMark DirectX 9, where it leads by 33.5%.

Q: Are these two GPUs close in overall average performance?

A: Yes, the data shows the RTX 2080 SUPER has an average benchmark score of 24170, while the RTX 3080 Mobile averages 23628. That is a difference of roughly 2.3%, and both GPUs sit at the 69th percentile among all GPUs.

Q: Does the RTX 3080 Mobile outperform the RTX 2080 SUPER in compute workloads?

A: In PassMark GPU Compute, the RTX 2080 SUPER actually wins with 8290 versus 7276, a 13.9% lead. However, in GeekBench OpenCL, the RTX 3080 Mobile takes the lead with 104831 versus 99226, a 5.3% advantage. The results depend on the specific compute test.

Q: How do these GPUs compare to their nearest rivals?

A: The RTX 2080 SUPER's closest rival is the AMD Radeon RX 6800S, which scores 0.4% higher on average. The RTX 3080 Mobile's closest rival is the NVIDIA GeForce RTX 3070 Ti Mobile, which scores 0.5% higher. Both cards are also within 1.3% of their respective rival clusters.

The Verdict

The data does not support a single universal winner. For users prioritizing legacy API compatibility and 2D desktop performance, the RTX 2080 SUPER is the clear choice. Its wins in PassMark DirectX 9, 10, 11, and 12, along with its 44.4% G2D advantage, make it the stronger card for older games and productivity tasks that rely on those paths. The 19.4% win in PassMark G3D also solidifies its position for traditional rasterized 3D workloads.

For users focused on the newest generation of DirectX 12 titles and OpenCL-based compute, the RTX 3080 Mobile presents a compelling case. Its 28.8% win in 3DMark Steel Nomad DX12 is not a marginal improvement; it is a generational leap in that specific workload. The 5.3% lead in GeekBench OpenCL further indicates that Ampere's architecture handles modern, parallel compute tasks more efficiently.

The overall average scores are nearly identical, differing by only about 2.3%. This means that in a mixed workload environment, the user would likely not perceive a dramatic difference between the two. The decision hinges on workload composition. The RTX 2080 SUPER is the safer bet for a broad library of existing software, while the RTX 3080 Mobile is the forward-looking option for future titles that will increasingly leverage the features tested by Steel Nomad.

Specification Differences

The two GPUs differ substantially in their core configurations. The RTX 2080 SUPER features 3072 shading units, 192 TMUs, and 64 ROPs, while the RTX 3080 Mobile packs 6144 shading units, 192 TMUs, and 96 ROPs. The transistor counts also diverge significantly: the RTX 2080 SUPER has 13,600 million transistors on a 545 mm² die, whereas the RTX 3080 Mobile has 17,400 million on a smaller 392 mm² die.

Clock speeds are another area of divergence. The RTX 2080 SUPER runs at a base clock of 1650 MHz and a boost clock of 1815 MHz. The RTX 3080 Mobile operates at a lower 1110 MHz base and 1545 MHz boost, reflecting its mobile power envelope. Memory clocks also differ: the desktop card runs at 1937 MHz (15.5 Gbps effective) versus 1750 MHz (14 Gbps effective) for the mobile part. This results in a bandwidth difference of 495.9 GB/s versus 448.0 GB/s, respectively.

Power and physical specifications are starkly different. The RTX 2080 SUPER has a TDP of 250 W, requires dual-slot cooling, and uses a 1x 6-pin + 1x 8-pin power connector configuration, with a suggested 600 W PSU. The RTX 3080 Mobile has a 115 W TDP and lists no power connectors or suggested PSU, as it is designed for laptop integration. The desktop card measures 267 mm in length, 116 mm in height, and 35 mm in width; the mobile chip has no listed dimensions.

The bus interface also differs: PCIe 3.0 x16 for the RTX 2080 SUPER versus PCIe 4.0 x16 for the RTX 3080 Mobile. Display outputs are another differentiator, with the desktop card offering 1x HDMI 2.0, 3x DisplayPort 1.4a, and 1x USB Type-C, while the mobile chip's outputs are listed as "Portable Device Dependent."

Architecture Differences

The architectural gap between these GPUs is fundamental. The RTX 2080 SUPER is built on the Turing architecture, fabricated on TSMC's 12 nm process node, yielding a transistor density of 25.0M per mm². The RTX 3080 Mobile uses the Ampere architecture on Samsung's 8 nm node, achieving a significantly higher density of 44.4M per mm². This explains how Ampere fits 17,400 million transistors onto a 392 mm² die, compared to Turing's 13,600 million on a larger 545 mm² die.

Ray tracing and tensor core configurations show both similarities and differences. Both GPUs feature 48 RT cores, but the RTX 2080 SUPER has 384 tensor cores versus 192 on the RTX 3080 Mobile. Despite fewer tensor cores, the desktop card's FP16 performance is listed at 22.30 TFLOPS (2:1 ratio), while the mobile chip achieves 18.98 TFLOPS (1:1 ratio). This suggests different approaches to mixed-precision compute.

The FP32 throughput tells a contrasting story. The RTX 2080 SUPER delivers 11.15 TFLOPS, while the RTX 3080 Mobile reaches 18.98 TFLOPS. This is a 70% higher theoretical peak for the Ampere part, yet the benchmark results show the desktop card winning most tests. The explanation likely lies in the mobile chip's lower clocks and the power constraints of a 115 W TDP versus 250 W. The Ampere architecture's doubled shading units (6144 vs 3072) only translate into wins under specific modern workloads where parallelism outweighs clock speed.

Both GPUs support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The manufacturing timeline shows the RTX 2080 SUPER released in July 2019, with the RTX 3080 Mobile following in January 2021. The desktop card's predecessor is GeForce 10 and successor is GeForce 30, while the mobile chip's predecessor is GeForce 20 Mobile. Both are end-of-life products.

Where Each One Wins

The RTX 2080 SUPER wins decisively in legacy and 2D-focused workloads. Its 33.5% lead in DirectX 9 and 16.7% in DirectX 10 make it the superior choice for older game libraries and applications that have not been updated for modern APIs. The 13% DirectX 11 advantage and 4.2% DirectX 12 lead extend this to a broad range of current software. The 44.4% G2D win indicates it is also better suited for desktop productivity, video playback, and 2D rendering tasks.

For traditional 3D rasterization, the RTX 2080 SUPER again takes the lead with a 19.4% margin in PassMark G3D. Its 13.9% win in GPU compute also makes it the stronger option for general-purpose compute workloads that do not specifically target the newest instruction sets. The 6.9% Vulkan win rounds out its dominance across multiple graphics APIs.

The RTX 3080 Mobile wins in two specific areas that are arguably the most future-facing. Its 28.8% advantage in 3DMark Steel Nomad DX12 signals that next-generation DirectX 12 titles, which are designed to scale with high core counts and modern memory architectures, will favor the Ampere chip. The 5.3% lead in GeekBench OpenCL also positions it well for compute applications that leverage OpenCL's parallel execution model.

The use-case split is clear: the RTX 2080 SUPER is the versatile all-rounder for existing software and mixed workloads, while the RTX 3080 Mobile is the specialist for the modern of DX12 and OpenCL compute. Neither card is a universal victor, and the choice depends entirely on whether the user's primary applications lean toward the legacy-dominant or modern-dominant side of the benchmark spectrum.