NVIDIA GeForce GTX TITAN Z vs NVIDIA RTX A5000 Mobile Comparison

The NVIDIA RTX A5000 Mobile is decisively faster than the NVIDIA GeForce GTX TITAN Z in every measurable benchmark, despite the TITAN Z’s dual-GPU heritage. The data shows a generational leap, with the A5000 Mobile delivering over four times the raw compute throughput in OpenCL and Vulkan workloads. This is not a close contest; it is a demonstration of how far mobile GPU architecture has progressed since the Kepler era.

Head-to-Head Benchmarks

The head-to-head comparison contains two benchmark results, and the RTX A5000 Mobile wins both outright. In Geekbench OpenCL, the A5000 Mobile scores 110,877 points against the GTX TITAN Z’s 25,465 points. That is a 335.4% advantage, meaning the A5000 Mobile delivers more than four times the compute performance in this test. The margin is so large that it effectively places the two cards in different performance tiers altogether.

In Geekbench Vulkan, the gap narrows slightly in percentage terms but remains overwhelming. The A5000 Mobile scores 88,144 points, while the GTX TITAN Z manages 22,006 points. This represents a 300.5% lead for the A5000 Mobile, still a triple-digit margin that underscores the architectural gulf between them. The Vulkan result is particularly telling because it reflects modern API efficiency, an area where the older Kepler architecture struggles.

The overall wins tally is 2-0 in favor of the RTX A5000 Mobile. There are no benchmark categories where the GTX TITAN Z takes the lead. The average benchmark score aggregates also confirm this: the A5000 Mobile posts 24,763 points, while the TITAN Z sits at 23,736 points, a difference of roughly 4.3%. Interestingly, the TITAN Z’s average score is not as far behind as the single-test deltas suggest, because it has only two benchmark entries, whereas the A5000 Mobile has nine, including several lower-scoring DirectX tests that drag its average down.

Looking at the nearest rivals for context, the A5000 Mobile’s average score places it just 0.1% ahead of the AMD Radeon RX 590 and 2% ahead of the NVIDIA GeForce GTX 1630. The GTX TITAN Z, meanwhile, sits 0.5% behind the NVIDIA GeForce RTX 3080 Mobile and 1.4% behind the AMD Radeon RX 6800S. This means the TITAN Z, despite its age, still lands in the same performance neighborhood as modern mid-range and high-end mobile GPUs, but the A5000 Mobile is clearly positioned above it.

Architecture Differences

The architectural divide between these two GPUs is vast, rooted in a seven-year gap in design philosophy. The RTX A5000 Mobile uses the GA104 chip built on Samsung’s 8 nm process, while the GTX TITAN Z uses the GK110B chip on TSMC’s 28 nm process. The process node difference alone, 8 nm versus 28 nm, explains much of the efficiency and performance disparity.

Transistor counts tell a dramatic story. The A5000 Mobile packs 17,400 million transistors into a 392 mm² die, yielding a density of 44.4 million transistors per mm². The GTX TITAN Z, in contrast, has 7,080 million transistors spread across a much larger 561 mm² die, resulting in a density of just 12.6 million transistors per mm². The A5000 Mobile achieves more than three times the transistor density, which allows it to fit far more compute resources into a smaller physical footprint.

The compute configuration is radically different. The A5000 Mobile has 6,144 shading units, 192 texture mapping units, and 96 raster output units. The GTX TITAN Z has 2,880 shading units, 240 texture mapping units, and only 48 raster output units. While the TITAN Z has more texture units, the A5000 Mobile has more than double the shaders and double the ROPs. Crucially, the A5000 Mobile adds 48 ray tracing cores and 192 tensor cores, features that simply do not exist on the Kepler-based TITAN Z. This makes the A5000 Mobile a modern accelerator capable of ray-traced workloads and AI-accelerated tasks, while the TITAN Z is purely a rasterization GPU.

Clock speeds also favor the newer card. The A5000 Mobile runs at a base clock of 900 MHz and boosts to 1575 MHz, while the TITAN Z operates at 705 MHz base and 876 MHz boost. The higher clocks, combined with the larger shader count, produce a massive FP32 throughput difference: 19.35 TFLOPS for the A5000 Mobile versus 5.046 TFLOPS for the TITAN Z. The A5000 Mobile also supports FP16 at a 1:1 ratio, offering 19.35 TFLOPS, whereas the TITAN Z has no FP16 capability listed.

Memory subsystems are equally divergent. The A5000 Mobile uses 16 GB of GDDR6 on a 256-bit bus, delivering 448.0 GB/s of bandwidth. The TITAN Z has 6 GB of GDDR5 on a 384-bit bus, which provides 336.0 GB/s. Although the TITAN Z has a wider bus, the A5000 Mobile’s newer memory technology gives it a 33% bandwidth advantage. Effective memory speed is 14 Gbps for the A5000 Mobile versus 7 Gbps for the TITAN Z.

Power and physical characteristics reflect their different design targets. The A5000 Mobile has a TDP of 150 W and uses no external power connectors, making it suitable for portable workstations. The GTX TITAN Z demands 375 W, requires two 8-pin power connectors, and a recommended 750 W power supply. It is a triple-slot card measuring 267 mm long, 111 mm tall, and 62 mm wide, whereas the A5000 Mobile’s dimensions are not specified, underscoring its mobile nature.

API support also differs. The A5000 Mobile supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the TITAN Z is limited to DirectX 12 (11_1) and Vulkan 1.2.175. The A5000 Mobile is thus ready for the latest graphics features, including mesh shaders and variable-rate shading, while the TITAN Z is behind on modern API standards.

Where Each One Wins

The RTX A5000 Mobile wins across every benchmark category, but the nature of its wins points to specific strengths. In OpenCL, which often reflects raw compute throughput and memory bandwidth scaling, the A5000 Mobile’s 335.4% lead indicates its suitability for GPGPU workloads like rendering, scientific simulation, and machine learning inference. The 48 tensor cores are a key advantage here, enabling hardware-accelerated AI operations that the TITAN Z cannot perform at all.

In Vulkan, the A5000 Mobile’s 300.5% lead suggests superior driver optimization and architectural efficiency in modern game engines and real-time graphics applications. The higher clock speeds, larger shader count, and support for DirectX 12 Ultimate features make it the better choice for any workload that leverages contemporary graphics APIs.

The GTX TITAN Z’s only redeeming quality in this comparison is its average benchmark percentile. It sits at the 69th percentile versus the A5000 Mobile’s 70th percentile, meaning both cards are roughly in the same overall performance bracket when averaged across all GPUs. However, this is misleading because the TITAN Z has only two benchmark scores, both from Geekbench, while the A5000 Mobile’s average includes lower-scoring DirectX tests that pull its average down. In direct head-to-head tests, the TITAN Z has no wins.

For legacy DirectX workloads, the TITAN Z might have some theoretical appeal due to its Kepler architecture being tuned for that era, but the benchmark data does not include any DirectX tests for the TITAN Z to verify this. The A5000 Mobile’s DirectX scores, ranging from 72 in DirectX 12 to 169 in DirectX 9, are notably lower than its Geekbench scores, suggesting that the mobile card is optimized for compute-heavy tasks rather than legacy rasterization.

FAQ

Q: Which GPU has higher raw compute performance?

A: The RTX A5000 Mobile, with 19.35 TFLOPS of FP32 performance, compared to the GTX TITAN Z’s 5.046 TFLOPS. This is nearly a 4x difference in theoretical peak throughput.

Q: Does the GTX TITAN Z support ray tracing?

A: No. The GTX TITAN Z has no ray tracing cores, while the RTX A5000 Mobile includes 48 dedicated RT cores. This makes the A5000 Mobile the only option for hardware-accelerated ray tracing.

Q: How do their memory bandwidths compare?

A: The A5000 Mobile provides 448.0 GB/s of bandwidth from 16 GB of GDDR6 memory, while the TITAN Z offers 336.0 GB/s from 6 GB of GDDR5. The A5000 Mobile has both more capacity and higher bandwidth.

Q: What is the power consumption difference?

A: The A5000 Mobile has a TDP of 150 W and requires no external power connectors, whereas the GTX TITAN Z consumes 375 W and needs two 8-pin connectors plus a 750 W power supply.

Q: Which card is better for modern APIs like Vulkan?

A: The RTX A5000 Mobile, which scores 88,144 in Geekbench Vulkan versus the TITAN Z’s 22,006. It also supports Vulkan 1.4 compared to the TITAN Z’s 1.2.175.

Q: Is the GTX TITAN Z competitive in any benchmark?

A: No. In the two head-to-head tests, the A5000 Mobile wins by over 300% in both. The TITAN Z’s average score of 23,736 is close to the A5000 Mobile’s 24,763, but this is due to limited benchmark data rather than actual competitive performance.

The Verdict

The data is unambiguous: the NVIDIA RTX A5000 Mobile is the superior GPU in every measured aspect. It wins both head-to-head benchmarks by margins exceeding 300%, offers more than triple the FP32 throughput, has quadruple the memory capacity, and supports modern features like ray tracing and tensor cores that the GTX TITAN Z lacks entirely. The A5000 Mobile is the only sensible choice for anyone needing current-generation compute capabilities, AI acceleration, or modern API support.

The GTX TITAN Z, while historically significant as a dual-GPU flagship from 2014, is obsolete in practical terms. Its 6 GB of GDDR5 memory and 5.046 TFLOPS of compute are insufficient for contemporary workloads, and its 375 W power draw makes it impractical for most systems. The only scenario where the TITAN Z might be considered is a legacy system that requires a specific Kepler-era driver or feature set, but even then, its performance is far below modern standards.

For professionals and enthusiasts, the RTX A5000 Mobile is the clear winner. Its 70th percentile ranking and 24,763 average benchmark score place it in the upper tier of all GPUs, while the TITAN Z’s 69th percentile and 23,736 average score are only nominally close due to sparse data. The A5000 Mobile’s architecture is designed for the future, with DirectX 12 Ultimate, Vulkan 1.4, and hardware acceleration for ray tracing and AI, whereas the TITAN Z is a relic of a bygone era. Pick the A5000 Mobile for any new build or upgrade.

Specification Differences

| Specification | NVIDIA RTX A5000 Mobile | NVIDIA GeForce GTX TITAN Z |

|---|---|---|

| Architecture | Ampere | Kepler |

| Process Node | 8 nm | 28 nm |

| Foundry | Samsung | TSMC |

| Transistors | 17,400 million | 7,080 million |

| Die Size | 392 mm² | 561 mm² |

| Base Clock | 900 MHz | 705 MHz |

| Boost Clock | 1575 MHz | 876 MHz |

| Memory Size | 16 GB | 6 GB |

| Memory Type | GDDR6 | GDDR5 |

| Memory Bus | 256 bit | 384 bit |

| Memory Bandwidth | 448.0 GB/s | 336.0 GB/s |

| Shading Units | 6144 | 2880 |

| Texture Mapping Units | 192 | 240 |

| Raster Output Units | 96 | 48 |

| Ray Tracing Cores | 48 | None |

| Tensor Cores | 192 | None |

| Pixel Rate | 151.2 GPixel/s | 52.56 GPixel/s |

| Texture Rate | 302.4 GTexel/s | 210.2 GTexel/s |

| FP32 Performance | 19.35 TFLOPS | 5.046 TFLOPS |

| FP16 Performance | 19.35 TFLOPS | None |

| TDP | 150 W | 375 W |

| Power Connectors | None | 2x 8-pin |

| Suggested PSU | None | 750 W |

| Bus Interface | PCIe 4.0 x16 | PCIe 3.0 x16 |

| DirectX Support | 12 Ultimate (12_2) | 12 (11_1) |

| Vulkan Support | 1.4 | 1.2.175 |

| Display Outputs | Portable Device Dependent | 2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2 |

| Slot Width | Not specified | Triple-slot |

| Dimensions | Not specified | 267 mm x 111 mm x 62 mm |

| Release Date | 2021-04-11 | 2014-05-27 |

| Launch MSRP | Not specified | 2,999 USD |