AMD Radeon RX 6900 XT vs NVIDIA TITAN X Pascal Comparison

The NVIDIA TITAN X Pascal and AMD Radeon RX 6900 XT represent two distinct eras of flagship graphics hardware. The TITAN X Pascal, built on the Pascal architecture, was released in August 2016, while the Radeon RX 6900 XT, based on RDNA 2.0, launched in October 2020. The recorded data shows a clear generational shift in compute capability, memory configuration, and API support, with the AMD card winning both head-to-head benchmark comparisons.

Where Each One Wins

The Radeon RX 6900 XT dominates the recorded benchmark suite, taking both head-to-head victories. In Geekbench OpenCL, the AMD card scores 187673 against the TITAN X Pascal's 66696, a delta of negative 64.5 percent from the AMD card's perspective, meaning the NVIDIA card trails by that margin. The second comparison, Geekbench Vulkan, shows the RX 6900 XT at 148525 versus 77499 for the TITAN X Pascal, with a negative 47.8 percent delta.

The TITAN X Pascal does not win a single recorded benchmark in this comparison. However, its average benchmark score of 72098 across its two recorded tests places it in the 91st percentile of all GPUs in the database. The RX 6900 XT, with an average score of 50951 across its eleven recorded tests, sits in the 86th percentile. This discrepancy in percentile ranking relative to average score highlights that the TITAN X Pascal's limited test set skews toward compute workloads where it performs relatively well, while the RX 6900 XT's broader test suite includes legacy DirectX and Passmark tests that drag its average down.

The RX 6900 XT shows particular strength in compute-oriented workloads such as OpenCL and Metal. Its Geekbench Metal score of 177021 is the highest single recorded result for either card in any shared test. The TITAN X Pascal lacks a recorded Metal score entirely, so the RX 6900 XT holds exclusivity in that API. For Vulkan, the RX 6900 XT's 148525 nearly doubles the TITAN X Pascal's 77499, indicating a substantial advantage in modern graphics APIs.

Architecture Differences

The two cards are built on fundamentally different process nodes and architectures. The TITAN X Pascal uses a 16 nm TSMC process with the GP102 chip, containing 11,800 million transistors on a 471 mm² die, yielding a transistor density of 25.1 million per mm². The RX 6900 XT uses a 7 nm TSMC process with the Navi 21 chip, packing 26,800 million transistors into a 520 mm² die, for a density of 51.5 million per mm². The newer process node allows the AMD card to more than double the transistor count while increasing die size by only about 49 mm².

Clock speeds differ significantly. The TITAN X Pascal runs at a 1417 MHz base and 1531 MHz boost clock, while the RX 6900 XT operates at 1825 MHz base, 2015 MHz game clock, and 2250 MHz boost. Memory clocks also differ: the TITAN X Pascal uses 1251 MHz memory with 10 Gbps effective speed, while the RX 6900 XT uses 2000 MHz memory with 16 Gbps effective speed.

The memory subsystems take different approaches. The TITAN X Pascal has 12 GB of GDDR5X on a 384 bit bus, providing 480.4 GB/s of bandwidth. The RX 6900 XT has 16 GB of GDDR6 on a 256 bit bus, providing 512.0 GB/s. Despite the narrower bus, the higher memory clock on the AMD card yields greater bandwidth.

Compute resources heavily favor the RX 6900 XT. It has 5120 shading units, 320 texture mapping units, and 128 ROPs, against the TITAN X Pascal's 3584 shading units, 224 TMUs, and 96 ROPs. The RX 6900 XT also includes 80 ray tracing cores, a feature entirely absent from the Pascal architecture. Pixel rate is 288.0 GPixel/s for the AMD card versus 147.0 GPixel/s for the NVIDIA card, and texture rate is 720.0 GTexel/s versus 342.9 GTexel/s.

Floating point performance shows a similar gap. The RX 6900 XT delivers 23.04 TFLOPS of FP32 compute, more than double the TITAN X Pascal's 10.97 TFLOPS. FP16 performance is even more divergent: the RX 6900 XT achieves 46.08 TFLOPS at a 2:1 ratio, while the TITAN X Pascal manages only 171.5 GFLOPS at a 1:64 ratio, reflecting Pascal's minimal half-precision support.

Power and physical specifications also differ. The TITAN X Pascal is rated at 250 W TDP with a 600 W suggested PSU, uses dual-slot cooling, and requires 1x 6-pin plus 1x 8-pin power connectors. The RX 6900 XT is rated at 300 W TDP with a 700 W suggested PSU, uses triple-slot cooling, and requires 2x 8-pin power connectors. Both cards share the same 267 mm length, but the RX 6900 XT is taller at 120 mm versus 112 mm and wider at 50 mm versus 40 mm.

Bus interface and display outputs also differ. The TITAN X Pascal uses PCIe 3.0 x16 and outputs 1x DVI, 1x HDMI 2.0, and 3x DisplayPort 1.4a. The RX 6900 XT uses PCIe 4.0 x16 and outputs 1x HDMI 2.1, 2x DisplayPort 1.4a, and 1x USB Type-C. The AMD card supports DirectX 12 Ultimate (12_2), while the NVIDIA card supports DirectX 12 (12_1). Both support OpenGL 4.6 and Vulkan 1.4.

Head-to-Head Benchmarks

The Geekbench OpenCL test shows the largest gap. The RX 6900 XT scores 187673, which is 120977 points higher than the TITAN X Pascal's 66696. This represents a negative 64.5 percent delta for the NVIDIA card, meaning it scores roughly 35.5 percent of the AMD card's result. The OpenCL workload benefits from the RX 6900 XT's higher shading unit count, higher clocks, and doubled FP32 throughput.

The Geekbench Vulkan test narrows the gap somewhat. The RX 6900 XT scores 148525 against 77499 for the TITAN X Pascal, a negative 47.8 percent delta. The TITAN X Pascal performs relatively better in Vulkan than in OpenCL, but the RX 6900 XT still leads by 71026 points. Vulkan results indicate the older Pascal architecture retains some efficiency in modern low-level APIs, but the raw compute advantage of RDNA 2.0 remains decisive.

For context on the RX 6900 XT's broader performance, its Passmark G3D score of 26732 and GPU compute score of 14547 show strong DirectX and compute results. Its Passmark DirectX 11 score of 279 and DirectX 10 score of 167 are modest, while DirectX 12 and DirectX 9 scores of 113 and 268 respectively reflect the varying demands of those legacy APIs. The G2D score of 1055 indicates the card's 2D performance is not a differentiator.

The TITAN X Pascal's nearest rivals in the database provide context for its standing. The AMD Radeon Pro Vega 64 averages 72379, just 0.4 percent higher, and the AMD Radeon Vega Frontier Edition averages 73370, 1.7 percent higher. The AMD Radeon RX 6650M averages 71768, 0.5 percent lower, and the AMD Radeon RX 6600 LE averages 70829, 1.8 percent lower. These tight margins show the TITAN X Pascal sits in a cluster of similarly performing GPUs from the same era.

The RX 6900 XT's nearest rivals include the NVIDIA CMP 50HX at 51790, 1.6 percent higher, and the AMD Radeon RX Vega 64 at 50001, 1.9 percent lower. The NVIDIA GeForce RTX 5070 Ti averages 49957, 2 percent lower, and the Intel Arc A550M averages 49737, 2.4 percent lower. The RX 6900 XT's average score of 50951 places it slightly below the CMP 50HX but above the other three rivals, indicating it competes with a range of GPUs from different generations.

FAQ

Q: Which card has higher raw compute performance?

A: The AMD Radeon RX 6900 XT delivers 23.04 TFLOPS of FP32 compute, while the NVIDIA TITAN X Pascal delivers 10.97 TFLOPS. The AMD card also achieves 46.08 TFLOPS of FP16, against the TITAN X Pascal's 171.5 GFLOPS.

Q: How do the memory configurations compare?

A: The TITAN X Pascal has 12 GB of GDDR5X on a 384 bit bus with 480.4 GB/s bandwidth. The RX 6900 XT has 16 GB of GDDR6 on a 256 bit bus with 512.0 GB/s bandwidth. The AMD card provides both more capacity and higher bandwidth.

Q: What is the difference in benchmark scores between the two cards in the shared tests?

A: In Geekbench OpenCL, the RX 6900 XT scores 187673 versus 66696 for the TITAN X Pascal. In Geekbench Vulkan, the RX 6900 XT scores 148525 versus 77499. The AMD card wins both tests by wide margins.

Q: Do both cards support ray tracing?

A: No. The RX 6900 XT includes 80 ray tracing cores, while the TITAN X Pascal has no ray tracing cores listed in the data.

Q: How do their average benchmark scores and percentiles compare?

A: The TITAN X Pascal has an average benchmark score of 72098 and sits in the 91st percentile of all GPUs. The RX 6900 XT has an average score of 50951 and sits in the 86th percentile, despite winning both head-to-head tests.

Q: What are the power requirements for each card?

A: The TITAN X Pascal has a 250 W TDP with a 600 W suggested PSU and requires 1x 6-pin plus 1x 8-pin connectors. The RX 6900 XT has a 300 W TDP with a 700 W suggested PSU and requires 2x 8-pin connectors.

The Verdict

The data points overwhelmingly toward the AMD Radeon RX 6900 XT for any user prioritizing raw compute and modern API support. It wins both recorded head-to-head benchmarks, offers more than double the FP32 throughput, includes ray tracing hardware, and provides greater memory capacity and bandwidth. The negative 64.5 percent delta in OpenCL and negative 47.8 percent delta in Vulkan leave no ambiguity about which card performs better in the shared tests.

The NVIDIA TITAN X Pascal retains relevance only in the context of its era. Its 91st percentile ranking reflects strong relative performance among older GPUs, and its average score of 72098 is higher than the RX 6900 XT's 50951 because of the differing test sets. Users running only OpenCL and Vulkan workloads from this specific benchmark suite would see the RX 6900 XT as the clear winner, but the TITAN X Pascal's narrower test coverage means its average score cannot be directly compared to the AMD card's broader suite.

For users who need 12 GB of memory, a dual-slot design, PCIe 3.0 compatibility, or the specific power connector layout of 1x 6-pin plus 1x 8-pin, the TITAN X Pascal is the only option of the two. The RX 6900 XT requires a triple-slot cooler, PCIe 4.0 interface, 2x 16 GB of GDDR6, and a 300 W TDP with 700 W suggested PSU. The AMD card is the only one with 2x 8-pin connectors. The RX 6900 XT is the only one with USB Type-C output and the only one supporting DirectX 12 Ultimate with 80 ray tracing cores.

The recorded data shows the RX 6900 XT launch MSRP was 999 USD, while the TITAN X Pascal launch MSRP was 1,199 USD. Both cards are end-of-life in production status. The verdict is simple for compute-focused workloads: the RX 6900 XT is the superior performer in every recorded comparison, and the TITAN X Pascal's advantages are limited to form factor and connector preferences and its higher percentile ranking among its own peer group.