AMD Radeon RX 6600M vs NVIDIA TITAN Xp Comparison

Where Each One Wins

The benchmark data presents a clear, one-sided picture. The NVIDIA TITAN Xp wins every single head-to-head comparison recorded in the database, claiming all 10 wins across the test suite. The AMD Radeon RX 6600M does not secure a single victory in any of the measured workloads. This is not a close contest; it is a systematic advantage for the Pascal-era flagship across every category tested.

The TITAN Xp's dominance is most pronounced in compute-heavy workloads. In the Passmark GPU Compute test, it scores 9430 against the RX 6600M's 5646, a delta of -40.1%. This is the largest margin recorded between the two cards. The 3DMark Steel Nomad DX12 test shows a similar gap at -37%, with scores of 2372 and 1495 respectively. These results indicate that the TITAN Xp's raw execution resources translate into substantially higher throughput in both modern API gaming and general-purpose compute.

In legacy DirectX workloads, the TITAN Xp also leads, though by smaller margins. The DirectX 10 test shows a -26.9% difference (119 vs 87), while DirectX 11 is closer at -10.5% (152 vs 136). DirectX 12 shows a -24.6% gap (69 vs 52). The pattern suggests that the TITAN Xp's advantage persists across API generations, but the older DirectX 11 path is where the two cards are most comparable.

The 2D performance category, measured by Passmark G2D, shows the TITAN Xp at 883 versus 728 for the AMD part, a -17.6% delta. This indicates the NVIDIA card also handles traditional rasterization and display composition tasks more efficiently. Even in Vulkan, which is often considered a strength of AMD's RDNA architecture, the TITAN Xp wins with 87180 against 73740, a -15.4% margin.

The only test where the AMD card approaches parity is Geekbench OpenCL, where the TITAN Xp leads by just -6.6% (72585 vs 67765). This is the closest result in the entire comparison, suggesting that the RX 6600M's compute units are competitive in certain OpenCL workloads, but it is still a loss.

The Verdict

The data directs a straightforward conclusion: for any workload represented in this benchmark suite, the NVIDIA TITAN Xp is the superior performer. The RX 6600M wins zero tests, and the TITAN Xp wins all ten. Users prioritizing maximum frame rates in DX12 titles, high-throughput compute tasks, or even basic 2D desktop acceleration should select the NVIDIA card based on these measurements.

The TITAN Xp's average benchmark score of 19177 places it in the 64th percentile of all GPUs in the database. The RX 6600M, despite its higher average of 23273, sits in the 68th percentile. This apparent contradiction is explained by the distribution of scores: the AMD card's average is inflated by its strong Geekbench results, but its performance in the head-to-head tests is consistently lower. The TITAN Xp's nearest rivals include the GeForce GTX 780, Tesla K20m, RTX 4050 Mobile, and Radeon RX 6600, all within 0.7% of its average score. The RX 6600M's nearest rivals are the R9 M290X, Pro Vega 16, P106-100, and AI PRO R9700, all within 0.2% of its average.

For a user considering the RX 6600M, the data shows it is a capable mobile GPU that sits near the Radeon R9 M290X and Pro Vega 16 in overall performance. However, when directly compared to the TITAN Xp, it falls behind in every recorded test. The TITAN Xp is the clear choice for anyone who needs the highest scores in the benchmarks listed here. The RX 6600M's only advantage is its lower power draw, but the database does not record any performance metric where that translates into a win.

Head-to-Head Benchmarks

The largest margin in the entire comparison appears in Passmark GPU Compute. The TITAN Xp scores 9430, the RX 6600M scores 5646, and the delta is -40.1%. This is a massive gap, indicating that the NVIDIA card delivers more than 1.67 times the compute throughput in this test. For users running GPGPU workloads, this is the most significant differentiator.

The 3DMark Steel Nomad DX12 test shows the TITAN Xp at 2372 versus 1495, a -37% difference. This is the second-largest gap and the most relevant for modern gaming. The TITAN Xp also leads in Passmark DirectX 10, scoring 119 against 87, a -26.9% delta. In Passmark G3D, the TITAN Xp scores 18750 against 13929, a -25.7% difference. These three tests together paint a picture of consistent superiority across gaming APIs.

The DirectX 12 test shows a -24.6% gap (69 vs 52), while DirectX 9 shows -18.6% (226 vs 184). The 2D test (Passmark G2D) shows -17.6% (883 vs 728). Vulkan shows -15.4% (87180 vs 73740). The smallest margin is in OpenCL, where the TITAN Xp wins 72585 against 67765, a -6.6% delta. Even the closest result is still a clear loss for the AMD card.

The pattern across all ten tests is consistent: the TITAN Xp wins by margins ranging from 6.6% to 40.1%. There is no workload category, whether DX9 legacy, DX12 modern, Vulkan, OpenCL, or pure 2D, where the RX 6600M manages to outperform.

FAQ

Q: Does the AMD Radeon RX 6600M win any benchmark against the NVIDIA TITAN Xp?

A: No. The head-to-head data records 10 tests, and the NVIDIA TITAN Xp wins all 10. The AMD card has zero wins in the comparison.

Q: What is the largest performance gap between the two cards?

A: The largest gap is in Passmark GPU Compute, where the TITAN Xp scores 9430 and the RX 6600M scores 5646, a delta of -40.1% in favor of the NVIDIA card.

Q: Which card is better for DirectX 12 gaming?

A: The TITAN Xp. In the 3DMark Steel Nomad DX12 test, it scores 2372 against the RX 6600M's 1495, a -37% difference. In Passmark DirectX 12, it scores 69 against 52, a -24.6% gap.

Q: How does the Vulkan performance compare?

A: The TITAN Xp leads in Geekbench Vulkan with 87180 points versus 73740 for the RX 6600M, a -15.4% delta. The AMD card does not win this test.

Q: What is the closest benchmark result between the two?

A: The closest result is Geekbench OpenCL, where the TITAN Xp scores 72585 and the RX 6600M scores 67765, a delta of only -6.6%. This is still a win for the NVIDIA card.

Q: Which card has a higher average benchmark score in the database?

A: The RX 6600M has a higher average benchmark score of 23273, while the TITAN Xp averages 19177. However, this average includes all recorded benchmarks, not just the head-to-head tests, and does not change the fact that the TITAN Xp wins every direct comparison.

Architecture Differences

The two cards represent fundamentally different design philosophies and generations. The AMD Radeon RX 6600M uses the Navi 23 chip based on RDNA 2.0 architecture, built on a 7 nm process at TSMC. The NVIDIA TITAN Xp uses the GP102 chip based on Pascal architecture, built on a 16 nm process also at TSMC. The process node difference is significant: 7 nm versus 16 nm.

The transistor counts are similar in magnitude, with the RX 6600M at 11,060 million and the TITAN Xp at 11,800 million. However, the die sizes differ dramatically. The Navi 23 die measures 237 mm², while the GP102 die measures 471 mm². This results in a transistor density of 46.7 million per mm² for the AMD chip versus 25.1 million per mm² for the NVIDIA chip. The RDNA 2.0 design packs more transistors into a smaller area.

Memory configurations also diverge sharply. The RX 6600M has 8 GB of GDDR6 on a 128-bit bus, delivering 224.0 GB/s of bandwidth. The TITAN Xp has 12 GB of GDDR5X on a 384-bit bus, delivering 547.6 GB/s. The NVIDIA card has more than double the memory bandwidth, which contributes to its performance advantage in bandwidth-sensitive workloads.

The compute resources tell a similar story. The RX 6600M has 1792 shading units, 112 TMUs, and 64 ROPs. The TITAN Xp has 3840 shading units, 240 TMUs, and 96 ROPs. The NVIDIA card has more than double the shading units and TMUs. The RX 6600M has 28 ray tracing cores, while the TITAN Xp has none, reflecting its older Pascal architecture without dedicated RT hardware.

Clock speeds differ in the opposite direction. The RX 6600M runs at a base of 2068 MHz and boosts to 2416 MHz, with a game clock of 2177 MHz. The TITAN Xp runs at a base of 1405 MHz and boosts to 1582 MHz. The AMD card has higher clocks, but the TITAN Xp's larger execution resource pool compensates. The FP32 throughput is 8.659 TFLOPS for the RX 6600M versus 12.15 TFLOPS for the TITAN Xp. The FP16 figures are stark: the RX 6600M delivers 17.32 TFLOPS at a 2:1 ratio, while the TITAN Xp delivers only 189.8 GFLOPS at a 1:64 ratio. The RX 6600M has a major advantage in half-precision compute.

Power and physical design differ as well. The RX 6600M has a TDP of 100 W, is an IGP form factor, and uses no power connectors. The TITAN Xp has a TDP of 250 W, is a dual-slot card, requires one 6-pin and one 8-pin connector, and has a suggested PSU of 600 W. The TITAN Xp measures 267 mm in length, 112 mm in height, and 40 mm in width. The RX 6600M has no recorded dimensions. The RX 6600M uses PCIe 4.0 x8, while the TITAN Xp uses PCIe 3.0 x16. The RX 6600M supports DirectX 12 Ultimate (12_2), while the TITAN Xp supports DirectX 12 (12_1). Both support OpenGL 4.6 and Vulkan 1.4.

The release dates reflect the generational gap: the RX 6600M launched on 2021-05-30, while the TITAN Xp launched on 2017-04-05. Both are end-of-life products. The TITAN Xp has a launch MSRP of 1,199 USD. The RX 6600M has no recorded launch MSRP.