NVIDIA GeForce GTX TITAN X vs NVIDIA TITAN RTX Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive performance gap between the NVIDIA GeForce GTX TITAN X and the NVIDIA TITAN RTX, with the newer card winning both direct comparison tests. In Geekbench OpenCL, the TITAN RTX scores 144,858 against the GTX TITAN X's 41,471, a delta of 71.4% in favor of the TITAN RTX. This is not a marginal improvement; it is a generational leap in raw compute throughput, reflecting the TITAN RTX's fundamentally different architecture and execution resources.

The Geekbench Vulkan result tells a similar story, though with a slightly narrower margin. The TITAN RTX posts 136,073, while the GTX TITAN X manages 49,397. The delta here is 63.7%, still a commanding lead for the TITAN RTX. Vulkan's lower-level API overhead tends to expose architectural efficiency, and the data indicates the TITAN RTX's Turing design extracts far more performance per clock from its larger shader array.

Looking at the broader database averages, the GTX TITAN X holds an average benchmark score of 36,530, placing it at the 80th percentile among all GPUs. Its nearest rivals include the AMD Radeon RX 5300M at 36,529 (0% delta), the NVIDIA T1000 at 36,289 (0.7% ahead for the TITAN X), and the AMD Radeon PRO W6400 at 37,157 (1.7% behind). The TITAN RTX, by contrast, has an average score of 31,676, which lands at the 76th percentile. This apparent contradiction, where the older card has a higher average score, is explained by the benchmark mix: the TITAN RTX's suite includes demanding DirectX 12 and compute workloads that drag down its aggregate, while the GTX TITAN X's limited test set (only OpenCL and Vulkan) skews higher. The head-to-head tests are the more reliable comparison, and they uniformly favor the TITAN RTX.

The TITAN RTX also shows strength in specific DirectX tests from the Passmark suite, scoring 20,491 in G3D and 10,034 in GPU compute, though no direct GTX TITAN X equivalents exist in the database for those workloads. The GTX TITAN X's individual scores (18,723 Metal, 41,471 OpenCL, 49,397 Vulkan) are respectable for its era but fall far short of the TITAN RTX's 144,858 OpenCL and 136,073 Vulkan figures.

Architecture Differences

The two cards come from different architectural generations, and the data reflects a comprehensive redesign rather than a simple clock bump. The GTX TITAN X uses the GM200 chip on the Maxwell 2.0 architecture, fabricated on a 28 nm process at TSMC. It packs 8,000 million transistors into a 601 mm² die, yielding a transistor density of 13.3 million per square millimeter. The TITAN RTX uses the TU102 chip on the Turing architecture, built on a 12 nm process, also at TSMC. Its transistor count is 18,600 million on a 754 mm² die, for a density of 24.7 million per square millimeter. That is a 132.5% increase in transistor count and an 85.8% increase in density, explaining the TITAN RTX's compute advantage.

Memory configurations differ substantially. The GTX TITAN X has 12 GB of GDDR5 on a 384-bit bus, with a memory clock of 1753 MHz (7 Gbps effective) and bandwidth of 336.6 GB/s. The TITAN RTX doubles capacity to 24 GB of GDDR6 on the same 384-bit bus, but with a memory clock of 1750 MHz (14 Gbps effective), achieving 672.0 GB/s bandwidth. That is exactly double the bandwidth, a critical factor for large datasets and high-resolution textures.

The compute resources are where the TITAN RTX pulls away decisively. The GTX TITAN X has 3,072 shading units, 192 texture mapping units, and 96 ROPs. The TITAN RTX has 4,608 shading units (50% more), 288 TMUs (50% more), and the same 96 ROPs. The TITAN RTX also introduces dedicated hardware absent from the GTX TITAN X: 72 RT cores for ray tracing and 576 tensor cores for AI workloads. The pixel rate rises from 104.5 GPixel/s to 169.9 GPixel/s, and the texture rate jumps from 209.1 GTexel/s to 509.8 GTexel/s. FP32 throughput goes from 6.691 TFLOPS to 16.31 TFLOPS, a 143.8% increase. The TITAN RTX also supports FP16 at 32.62 TFLOPS (2:1 ratio), which the GTX TITAN X does not expose.

API support reflects the architectural shift. The GTX TITAN X supports DirectX 12 (12_1), while the TITAN RTX supports DirectX 12 Ultimate (12_2), which includes features like mesh shaders and variable rate shading. Both cards support OpenGL 4.6 and Vulkan 1.4. Display outputs differ: the GTX TITAN X has 1x DVI, 1x HDMI 2.0, and 3x DisplayPort 1.2; the TITAN RTX has 1x HDMI 2.0, 3x DisplayPort 1.4a, and 1x USB Type-C. Power requirements are similar in form: the GTX TITAN X has a 250 W TDP with 1x 6-pin + 1x 8-pin connectors, while the TITAN RTX has a 280 W TDP with 2x 8-pin connectors. Both are dual-slot cards with a 600 W suggested PSU.

Where Each One Wins

The GTX TITAN X wins in exactly zero head-to-head benchmark tests recorded in the database. Its only comparative advantage is in the aggregate average score (36,530 vs 31,676), which stems from the different benchmark suites applied to each card. For users who rely on OpenCL or Vulkan compute, the TITAN RTX is categorically superior: 71.4% ahead in OpenCL and 63.7% ahead in Vulkan. The GTX TITAN X's best showing is its Metal score of 18,723, but there is no TITAN RTX Metal result for direct comparison.

The TITAN RTX wins in every measurable compute scenario. Its 24 GB of GDDR6 memory with 672.0 GB/s bandwidth makes it suitable for large-scale data processing, machine learning inference, and high-resolution rendering. The 576 tensor cores provide dedicated hardware for AI workloads, which the GTX TITAN X lacks entirely. The 72 RT cores enable hardware-accelerated ray tracing, a feature absent from the Maxwell architecture. For DirectX 12 Ultimate workloads, the TITAN RTX's support for the full feature set (12_2) gives it a functional edge over the GTX TITAN X's baseline 12_1.

The GTX TITAN X retains relevance only in legacy scenarios: it is end-of-life, uses older GDDR5 memory, and lacks the dedicated compute units of the Turing generation. Its 12 GB capacity is still substantial, but the bandwidth deficit (336.6 GB/s vs 672.0 GB/s) limits its throughput in memory-bound tasks. The card's 80th percentile ranking versus the TITAN RTX's 76th is a statistical artifact of the test mix, not a sign of real-world superiority.

The Verdict

The data is unambiguous: the NVIDIA TITAN RTX is the superior card in every direct comparison available. It delivers 71.4% higher OpenCL performance and 63.7% higher Vulkan performance than the GTX TITAN X. It doubles memory capacity (24 GB vs 12 GB) and doubles memory bandwidth (672.0 GB/s vs 336.6 GB/s). It offers more than double the FP32 throughput (16.31 TFLOPS vs 6.691 TFLOPS) and adds FP16 capability at 32.62 TFLOPS. It introduces dedicated RT and tensor cores, supports DirectX 12 Ultimate, and provides newer display outputs including DisplayPort 1.4a and USB Type-C.

The GTX TITAN X, while historically significant as a Maxwell flagship, is outclassed on every metric that matters for modern workloads. Its only advantage is the higher aggregate benchmark score, which is misleading due to the differing test suites. For any user choosing between these two cards, the TITAN RTX is the clear pick for compute, rendering, AI, or gaming. The GTX TITAN X should only be considered if the workload is strictly limited to legacy APIs or if the 250 W TDP (vs 280 W) is a hard constraint, though both cards share the same 600 W suggested PSU.

FAQ

Q: Which card has higher OpenCL performance?

A: The NVIDIA TITAN RTX scores 144,858 in Geekbench OpenCL, which is 71.4% higher than the GTX TITAN X's 41,471.

Q: How much memory does each card have?

A: The GTX TITAN X has 12 GB of GDDR5, while the TITAN RTX has 24 GB of GDDR6.

Q: Does the GTX TITAN X support ray tracing?

A: No, the GTX TITAN X has no RT cores. The TITAN RTX has 72 RT cores for hardware-accelerated ray tracing.

Q: What is the transistor density difference?

A: The GTX TITAN X has 13.3 million transistors per mm² on a 28 nm process, while the TITAN RTX has 24.7 million per mm² on a 12 nm process.

Q: Which card has higher memory bandwidth?

A: The TITAN RTX has 672.0 GB/s, exactly double the GTX TITAN X's 336.6 GB/s.

Q: Are both cards the same physical length?

A: Yes, both are 267 mm (10.5 inches) long. The GTX TITAN X is 111 mm tall and 38 mm wide, while the TITAN RTX is 116 mm tall and 35 mm wide.