Gigabyte nVidia GeForce RTX™ 4090 Windforce 24G Video card, PCI-E 4.0, GDDR6X 3x DP1.4, 1x HDMI 2.1 Graphics Processing GeForce RTX® 4090 Core Clock 2520 MHz CUDA® Cores 16384 Memory Clock 21 Gbps Memory Size 24 GB Memory Type GDDR6X Memory Bus 384 bit Card Bus PCI-E 4.0 Digital max resolution 7680x4320 Multi-view 4 Card size L=331 W=150 H=70 mm PCB Form ATX DirectX 12 Ultimate OpenGL 4.6 Recommended PSU 850W Power Connectors 16 pin*1 Output DisplayPort 1.4a *3 HDMI 2.1*1 Tube length 460mm ± 1.5% Radiator 360 mm Fan 3x 120 mm Accessories 1. Quick guide 2. VGA holder 3. One 16-pin to four 8-pin power adaptor