Top GPU cards performance comparison in Blender: GTX1080, Titan X, GTX980Ti and AMD R9 - BlenderNation

LionRender have done an in-depth test of four high-end GPU cards.

EVGA GeForce GTX TITAN 6GB SuperClocked Video Card Review

Vega 64 - 20% faster in Blender than GTX 1080Ti : r/Amd

Compute - The NVIDIA GeForce GTX 1070 Ti Founders Edition Review: GP104 Comes in Threes

Mid-2021 GPU Rendering Performance: Arnold, Blender, KeyShot, LuxCoreRender, Octane, Radeon ProRender, Redshift & V-Ray – Techgage

GPU rendering in Blender v2.79b - TITAN V, GTX 1080(Ti), GTX 980(Ti)

Which one is better for Blender rendering? GTX 1660 Super or RTX 3060? - Quora

AMD Radeon HD 7990 vs. Nvidia GeForce GTX 690 and GeForce GTX TITAN

GPU rendering - TITAN V, GTX 1080 Ti

GTX 1080 Ti vs 980 Ti vs TITAN X vs TITAN BLACK vs 780 Ti vs TITAN / NVIDIA SPECS & NO BENCHMARK

GTX 980 Ti Review & Benchmark vs. 980, Titan X, 780 Ti

Nvidia GeForce GTX 980 Ti vs GTX Titan X

NVIDIA GeForce RTX 3090 Performance In Blender, Octane, V-Ray, & More – Techgage

Review: AMD Radeon R9 290X vs. Nvidia GeForce GTX Titan at 4K - Graphics - HEXUS.net

NVIDIA GeForce GTX Titan X 12GB Video Card Review