Graphics Processing Radeon™ RX 6400 Core Clock Boost Clock : up to 2321 MHz / Game Clock : up to 2039 MHz Stream Processors 768 Process Technology 6 nm Memory Clock 16000 MHz Memory Size 4 GB Memory Type GDDR6 Memory Bus 64 bit Memory Bandwidth (GB/sec) 128 GB/s Card Bus PCI-E 4.0 Digital max resolution 7680x4320 Multi-view 2 Card size L=192 W=117 H=38 mm PCB Form ATX DirectX 12 Ultimate OpenGL 4.6 Recommended PSU 350W Power Connectors N/A Output DisplayPort 1.4 *1 / HDMI 2.1 *1