AMD Radeon PRO W6600 vs NVIDIA TITAN X Pascal Comparison

Head-to-Head Benchmarks

The direct comparison between the AMD Radeon PRO W6600 and the NVIDIA TITAN X Pascal is defined by two Geekbench workloads, and the results show a clear, though not uniform, advantage for the AMD card. In the OpenCL test, the Radeon PRO W6600 scores 73,514 against the TITAN X Pascal’s 66,696. That is a 10.2% lead, a substantial margin that indicates the newer architecture’s efficiency in general-purpose compute tasks. The Vulkan test narrows the gap significantly: the AMD card scores 78,428, while the NVIDIA card posts 77,499, a difference of only 1.2%. Despite the closeness, the Radeon PRO W6600 still wins that round, giving it a 2–0 sweep in the head-to-head suite.

The aggregate benchmark average reinforces this story. The Radeon PRO W6600 holds an average score of 81,995, placing it in the 92nd percentile of all GPUs. The TITAN X Pascal, with an average of 72,098, sits in the 91st percentile. The 9,897-point gap between their averages is nearly identical to the 10.2% OpenCL delta, suggesting that the OpenCL result is the dominant driver of the overall performance differential. The Vulkan result, where the AMD card leads by a hair, contributes little to the overall separation.

Looking at the nearest rivals provides additional context for each card’s standing. The Radeon PRO W6600’s closest competitor is the AMD Radeon Pro Vega 64X, which averages 80,959 — just 1.3% behind. The NVIDIA GeForce RTX 5090 trails by 2.7% at 79,842, and the Tesla P100 variants are 3.0% and 3.3% behind respectively. These are tight margins, meaning the W6600 sits at the top of a dense cluster of high-performance cards. The TITAN X Pascal’s neighborhood is different. Its closest rival is the AMD Radeon Pro Vega 64 at 72,379, which is 0.4% ahead. The AMD Radeon RX 6650M is 0.5% behind, and the RX 6600 LE is 1.8% behind. The AMD Radeon Vega Frontier Edition leads it by 1.7%. The TITAN X Pascal is therefore surrounded by cards that are all within a couple of percent, making its position less dominant than the W6600’s.

The raw specifications hint at why the W6600 wins despite having far fewer compute units. The TITAN X Pascal has 3,584 shading units, 224 texture mapping units, and 96 ROPs, all roughly double the W6600’s 1,792 shaders, 112 TMUs, and 64 ROPs. Yet the W6600’s FP32 throughput is 9.247 TFLOPS versus the TITAN X’s 10.97 TFLOPS. The TITAN X has a 1.72 TFLOPS raw advantage, but the W6600 still outperforms it in both tested workloads. The explanation lies in the clocks and the memory system. The W6600 boosts to 2580 MHz, while the TITAN X tops out at 1531 MHz. That 68% clock advantage compensates for the lower core count in many workloads.

Where Each One Wins

The data shows a one-sided outcome: the AMD Radeon PRO W6600 wins both available benchmark tests. There is no test in the head-to-head suite where the NVIDIA TITAN X Pascal takes the lead. The W6600’s largest win is in OpenCL, where its 10.2% margin is decisive. That result suggests the RDNA 2 architecture’s compute pipelines are particularly well-suited to OpenCL’s execution model, which stresses parallel throughput across many threads. The Vulkan win, at just 1.2%, is more of a tie. In that workload, the two cards are effectively equivalent, with the W6600 edging ahead by a margin that could be within run-to-run variance.

For users prioritizing OpenCL-heavy applications — such as certain scientific computing stacks, video encoding filters, or physics simulations — the W6600 is the clear choice. The TITAN X Pascal, despite its larger memory bus and higher raw FP32, cannot match the W6600 in this specific API. For Vulkan-based workloads, the choice is less clear-cut. The 1.2% delta means that either card would deliver nearly identical frame rates or compute times. However, the W6600 also holds a 13.7% advantage in average benchmark score (81,995 vs 72,098), which suggests that across a broader suite of tests, the AMD card would maintain its lead.

The TITAN X Pascal does have a few qualitative advantages that are not captured in the benchmark scores. It offers 12 GB of GDDR5X memory compared to the W6600’s 8 GB of GDDR6. That extra capacity could matter in workloads that exceed 8 GB, such as large dataset processing or high-resolution texture loading. The TITAN X also has a 384-bit memory bus delivering 480.4 GB/s, more than double the W6600’s 224.0 GB/s. The W6600’s narrower 128-bit bus is a potential bottleneck for memory-bandwidth-bound tasks, even though its 14 Gbps effective memory clock is faster than the TITAN X’s 10 Gbps. In practice, the benchmark scores show that the W6600’s compute efficiency outweighs its bandwidth deficit in the tested workloads.

Architecture Differences

The two cards represent different eras of GPU design. The AMD Radeon PRO W6600 uses the Navi 23 chip on the RDNA 2.0 architecture, built on a 7 nm TSMC process. The NVIDIA TITAN X Pascal uses the GP102 chip on the Pascal architecture, built on a 16 nm TSMC process. The process node difference is stark: 7 nm versus 16 nm. That translates directly to transistor density. The W6600 packs 11,060 million transistors into a 237 mm² die, achieving 46.7 million transistors per square millimeter. The TITAN X Pascal has 11,800 million transistors on a 471 mm² die, yielding just 25.1 million per square millimeter. The W6600 is nearly twice as dense, which explains how it can deliver competitive performance at a fraction of the power draw.

Power consumption reflects the architectural efficiency gap. The W6600 has a TDP of 100 W and requires a single 6-pin power connector with a suggested 300 W PSU. The TITAN X Pascal draws 250 W, needs a 6-pin plus an 8-pin connector, and requires a 600 W PSU. The W6600 delivers 92% of the TITAN X’s FP32 throughput (9.247 vs 10.97 TFLOPS) while consuming 60% less power. This is the clearest evidence of RDNA 2’s efficiency advantage over Pascal. The physical dimensions also differ: the W6600 is a single-slot card measuring 241 mm in length, while the TITAN X is a dual-slot card at 267 mm long, 112 mm tall, and 40 mm wide.

Memory architecture diverges significantly. The W6600 uses 8 GB of GDDR6 on a 128-bit bus, delivering 224.0 GB/s. The TITAN X uses 12 GB of GDDR5X on a 384-bit bus, delivering 480.4 GB/s. The TITAN X has more capacity and more than double the bandwidth. The W6600 counters with a faster effective memory clock of 14 Gbps versus 10 Gbps, but the bus width difference dominates. The W6600 also features 28 ray tracing cores, which the TITAN X lacks entirely. This makes the W6600 capable of DirectX 12 Ultimate (12_2) features, including hardware-accelerated ray tracing and variable rate shading. The TITAN X is limited to DirectX 12 (12_1) with no ray tracing support.

The feature sets also differ in display outputs and PCIe connectivity. The W6600 offers four DisplayPort 1.4a outputs and connects via PCIe 4.0 x8. The TITAN X provides one DVI, one HDMI 2.0, and three DisplayPort 1.4a outputs, but uses PCIe 3.0 x16. The PCIe 4.0 interface on the W6600 doubles the per-lane bandwidth, though the x8 configuration means it has the same total bandwidth as a PCIe 3.0 x16 slot. Both cards support OpenGL 4.6 and Vulkan 1.4. The W6600 adds FP16 performance of 18.49 TFLOPS at a 2:1 ratio, while the TITAN X only manages 171.5 GFLOPS at a 1:64 ratio — a 100-fold difference that makes the W6600 vastly superior for half-precision compute workloads.

The Verdict

The benchmark data is unambiguous: the AMD Radeon PRO W6600 is the faster card in the tested workloads. It wins OpenCL by 10.2% and Vulkan by 1.2%, and it holds a 13.7% lead in average benchmark score. For any user whose primary metric is Geekbench performance, the W6600 is the correct choice. The 92nd percentile placement versus the TITAN X’s 91st percentile confirms that the W6600 sits in a slightly higher performance tier overall.

However, the verdict is not purely about speed. The TITAN X Pascal offers 12 GB of memory versus 8 GB, and more than double the memory bandwidth. For workloads that are memory-capacity-bound or bandwidth-bound, the TITAN X may still hold an advantage, even though the tested benchmarks do not reflect it. The W6600’s 28 ray tracing cores and DirectX 12 Ultimate support make it the modern choice for applications that leverage those features. The TITAN X, released in 2016, predates those technologies.

The power efficiency argument is overwhelming. The W6600 draws 100 W and fits in a single slot, while the TITAN X draws 250 W and requires dual slots plus a more substantial power supply. In a workstation environment with multiple GPUs or constrained cooling, the W6600 is far easier to deploy. The W6600’s launch MSRP is 649 USD, half of the TITAN X’s 1,199 USD launch MSRP, though both cards are end-of-life products.

Pick the Radeon PRO W6600 if you need the best compute performance per watt, require ray tracing support, or work primarily in OpenCL or Vulkan environments. Pick the TITAN X Pascal if you need 12 GB of memory, require maximum memory bandwidth, or are running legacy workloads that do not benefit from RDNA 2’s feature set. The data does not support choosing the TITAN X for raw compute speed — the W6600 wins that outright.

FAQ

Q: Which card has the higher average benchmark score?

A: The AMD Radeon PRO W6600, with an average score of 81,995, compared to the NVIDIA TITAN X Pascal’s 72,098.

Q: How large is the OpenCL performance gap between the two cards?

A: The Radeon PRO W6600 scores 73,514 in Geekbench OpenCL, while the TITAN X Pascal scores 66,696, giving the AMD card a 10.2% lead.

Q: Does the TITAN X Pascal win any benchmark in the head-to-head comparison?

A: No. The Radeon PRO W6600 wins both tests: OpenCL (10.2% delta) and Vulkan (1.2% delta).

Q: What is the memory capacity difference?

A: The TITAN X Pascal has 12 GB of GDDR5X memory, while the Radeon PRO W6600 has 8 GB of GDDR6.

Q: Which card has ray tracing support?

A: Only the Radeon PRO W6600, which includes 28 ray tracing cores and supports DirectX 12 Ultimate (12_2). The TITAN X Pascal has no ray tracing cores and is limited to DirectX 12 (12_1).

Q: How do their power requirements compare?

A: The Radeon PRO W6600 has a 100 W TDP with a single 6-pin connector and a 300 W suggested PSU. The TITAN X Pascal has a 250 W TDP, requires a 6-pin plus 8-pin connector, and a 600 W suggested PSU.