NVIDIA GeForce RTX 4080 Mobile vs NVIDIA TITAN RTX Comparison

The Verdict

The data is unambiguous: the NVIDIA GeForce RTX 4080 Mobile wins every single head-to-head benchmark against the NVIDIA TITAN RTX, taking all 9 recorded tests. Its average benchmark score of 38135 places it at the 81st percentile of all GPUs, while the TITAN RTX sits at 31676 and the 76th percentile. The RTX 4080 Mobile is the better performer in compute, rasterization, and API-specific workloads, despite being a mobile part with a 110 W TDP versus the TITAN RTX's 280 W desktop TDP.

For users who need raw compute and sustained rendering on the go, the RTX 4080 Mobile is the clear pick. It delivers a 21.6% lead in Passmark G3D, a 29.1% lead in DirectX 11, and an 11.5% lead in GPU compute. The TITAN RTX, while end-of-life and carrying a 2,499 USD launch MSRP, offers only one advantage: 24 GB of memory versus 12 GB, with a wider 384-bit bus and higher bandwidth. That memory capacity is the sole reason to consider the older card, for workloads that exceed 12 GB of VRAM. Otherwise, the RTX 4080 Mobile is faster across every measured metric.

Architecture Differences

The two GPUs come from different architectural generations, which explains the performance gap. The RTX 4080 Mobile uses the AD104 chip built on Ada Lovelace architecture, fabricated by TSMC on a 5 nm process. It packs 35,800 million transistors into a 294 mm² die, yielding a transistor density of 121.8M per mm². The TITAN RTX uses the TU102 chip on Turing architecture, also from TSMC but on a 12 nm process, with 18,600 million transistors spread across a much larger 754 mm² die, giving a density of just 24.7M per mm².

The core configurations differ significantly. The RTX 4080 Mobile has 7424 shading units, 232 TMUs, 80 ROPs, 58 RT cores, and 232 tensor cores. The TITAN RTX counters with 4608 shading units, 288 TMUs, 96 ROPs, 72 RT cores, and 576 tensor cores. Despite having fewer shading units, the TITAN RTX has more texture units, ROPs, RT cores, and tensor cores, which would normally suggest an advantage in specific workloads. However, the architectural efficiency of Ada Lovelace over Turing offsets that.

Clock speeds favor the TITAN RTX on paper. It runs at a 1350 MHz base and 1770 MHz boost, versus the RTX 4080 Mobile's 1290 MHz base and 1665 MHz boost. The TITAN RTX also has a higher pixel rate at 169.9 GPixel/s versus 133.2 GPixel/s, and a higher texture rate at 509.8 GTexel/s versus 386.3 GTexel/s. Yet the RTX 4080 Mobile wins in raw FP32 throughput at 24.72 TFLOPS versus 16.31 TFLOPS. The TITAN RTX does lead in FP16 at 32.62 TFLOPS (2:1 ratio) versus the RTX 4080 Mobile's 24.72 TFLOPS (1:1 ratio), which matters for certain AI or compute workloads.

Memory is where the TITAN RTX holds a structural edge. It has 24 GB of GDDR6 on a 384-bit bus, delivering 672.0 GB/s of bandwidth and running at 1750 MHz (14 Gbps effective). The RTX 4080 Mobile has 12 GB of GDDR6 on a 192-bit bus, delivering 432.0 GB/s at 2250 MHz (18 Gbps effective). The TITAN RTX has double the capacity and 55.6% more bandwidth. The RTX 4080 Mobile compensates with faster memory clocks, but capacity is the older card's clear advantage.

The TITAN RTX is a dual-slot card measuring 267 mm long, 116 mm tall, and 35 mm wide, requiring 2x 8-pin power connectors and a 600 W suggested PSU. It outputs via 1x HDMI 2.0, 3x DisplayPort 1.4a, and 1x USB Type-C. The RTX 4080 Mobile is an IGP (integrated graphics package) with no slot width, no power connectors, and portable device dependent display outputs. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and both use PCIe 4.0 x16 on the mobile part versus PCIe 3.0 x16 on the TITAN RTX. The RTX 4080 Mobile is marked active in production, while the TITAN RTX is end-of-life.

Head-to-Head Benchmarks

The RTX 4080 Mobile wins all 9 recorded comparisons, but the magnitude varies significantly by workload. The largest gap is in Passmark DirectX 11, where the RTX 4080 Mobile scores 244 against the TITAN RTX's 189, a 29.1% advantage. Passmark DirectX 9 shows a similar story: 286 versus 223, a 28.3% lead. These older API results indicate that Ada Lovelace's driver optimization and architectural efficiency translate well even into legacy DirectX paths.

In Passmark G3D, the RTX 4080 Mobile posts 24926 versus 20491, a 21.6% lead. This is the most representative overall gaming and graphics test, and the margin is substantial. The RTX 4080 Mobile also wins Passmark GPU Compute at 11191 versus 10034, an 11.5% edge, suggesting better general compute performance despite the TITAN RTX's higher FP16 throughput. In Geekbench OpenCL, the RTX 4080 Mobile scores 159575 versus 144858, a 10.2% lead. Geekbench Vulkan shows 145807 versus 136073, a 7.2% lead.

Smaller but consistent wins appear in Passmark DirectX 12 (96 versus 88, a 9.1% lead), Passmark DirectX 10 (157 versus 147, a 6.8% lead), and Passmark G2D (929 versus 860, an 8% lead). Even the 2D test, which is less graphics intensive, favors the newer architecture. The RTX 4080 Mobile's narrowest win is 6.8% in DirectX 10, which still indicates a clear margin.

The performance pattern is consistent: the RTX 4080 Mobile leads by single digits in modern API tests (Vulkan, DirectX 12) and by double digits in legacy and aggregate tests (DirectX 9, DirectX 11, G3D). The TITAN RTX never comes within 5% of the mobile card in any test. The data shows no workload category where the older card overtakes the newer one, despite the TITAN RTX having higher clocks, more ROPs, more RT cores, more tensor cores, and a wider memory bus.

FAQ

Q: Which GPU has better overall performance?

A: The NVIDIA GeForce RTX 4080 Mobile wins all 9 head-to-head benchmarks, with an average benchmark score of 38135 versus 31676 for the TITAN RTX. Its percentile rank is 81 versus 76.

Q: Does the TITAN RTX have any advantages in memory?

A: Yes, the TITAN RTX has 24 GB of GDDR6 memory on a 384-bit bus with 672.0 GB/s bandwidth. The RTX 4080 Mobile has 12 GB on a 192-bit bus with 432.0 GB/s. The TITAN RTX offers double the capacity and 55.6% more bandwidth.

Q: How do they compare in compute performance?

A: The RTX 4080 Mobile leads in FP32 at 24.72 TFLOPS versus 16.31 TFLOPS. The TITAN RTX leads in FP16 at 32.62 TFLOPS (2:1) versus 24.72 TFLOPS (1:1). In Passmark GPU Compute, the RTX 4080 Mobile wins 11191 versus 10034, an 11.5% lead.

Q: What are the power requirements for each?

A: The RTX 4080 Mobile has a 110 W TDP and requires no power connectors as an IGP. The TITAN RTX has a 280 W TDP, requires 2x 8-pin power connectors, and a 600 W suggested PSU.

Q: Which GPU is more recent?

A: The RTX 4080 Mobile was released on 2023-01-02 and is in the GeForce 40 Mobile generation. The TITAN RTX was released on 2018-12-17 and is in the GeForce 20 generation. The TITAN RTX is end-of-life, while the RTX 4080 Mobile is active.

Q: How does the RTX 4080 Mobile compare to its nearest rivals?

A: The RTX 4080 Mobile's average score is 0.4% below the GeForce MX570, 0.6% below the RTX 5080 Mobile, and 1.3% above both the RTX 4070 and Tesla P4. The TITAN RTX is 0.5% above the RTX PRO 4500 Blackwell and 0.7% below the Intel Arc Pro A30M.

Where Each One Wins

The RTX 4080 Mobile wins in every measured category, making it the default choice for almost all use cases. Its biggest wins come in legacy DirectX workloads: 29.1% ahead in DirectX 11 and 28.3% ahead in DirectX 9. That makes it the better option for older games and applications that rely on those APIs. It also wins in aggregate gaming performance with a 21.6% lead in Passmark G3D, and in modern APIs with a 9.1% lead in DirectX 12 and a 7.2% lead in Vulkan. For compute tasks, the 11.5% lead in GPU Compute and 10.2% lead in OpenCL mean the mobile card is faster even in non-gaming workloads, despite the TITAN RTX's larger memory pool.

The RTX 4080 Mobile also wins on efficiency and form factor. It runs at 110 W TDP with no power connectors and no slot width, making it suitable for thin laptops. The TITAN RTX is a dual-slot desktop card at 280 W with 2x 8-pin connectors and a 600 W PSU requirement. The RTX 4080 Mobile achieves higher performance with less than half the power draw, a direct result of the 5 nm process versus 12 nm and the newer Ada Lovelace architecture.

The TITAN RTX's only winning scenario is memory capacity. With 24 GB versus 12 GB, it can hold larger datasets, textures, or models in VRAM without spilling to system memory. For workloads that require more than 12 GB of VRAM, such as massive 3D scenes, certain scientific computing tasks, or large machine learning models, the TITAN RTX is the only option that fits. It also has higher memory bandwidth at 672.0 GB/s versus 432.0 GB/s, which helps in memory-bound scenarios that stay within capacity. However, the RTX 4080 Mobile's faster memory clock (2250 MHz versus 1750 MHz) partially mitigates this in bandwidth-sensitive tasks that fit within 12 GB.

The TITAN RTX also has more RT cores (72 versus 58) and more tensor cores (576 versus 232), which could theoretically help in ray tracing and AI inference. But the benchmark data does not show a win in any test that reflects those advantages. The TITAN RTX's higher FP16 throughput (32.62 TFLOPS versus 24.72 TFLOPS) is notable for half-precision compute, but the RTX 4080 Mobile still wins the GPU Compute benchmark by 11.5%.

For users prioritizing performance per watt, portability, and modern API support, the RTX 4080 Mobile is the clear winner. For users with memory-hungry workloads exceeding 12 GB, the TITAN RTX is the only choice, despite being slower in every benchmark. The data shows that architectural generational improvements outweigh raw specifications like core counts and clock speeds, making the mobile part the better overall GPU.