Nvidia Quadro 4000 shows as PCIe v1.1 x16 in Gen 3 x16 slot | TechPowerUp Forums
GPU-Z 1.18.0 now supports Radeon RX 500 series | VideoCardz.com
PNY nVidia Quadro 4000 for MAC VCQ4000MAC-PB 900-51031-1706-000 Compeve Compenet PNY nVidia Quadro 4000 for MAC VCQ4000MAC-PB 900-51031-1706-000 [900-51031-1706-000 VCQ4000MAC] - $375.00 : Professional Multi Monitor Workstations, Graphics Card Experts
TechPowerUp GPU-Z v0.5.3 Released | TechPowerUp
Prepare for Future of Design: Introducing the Quadro RTX 4000 | NVIDIA Blog