ASUS ROG-STRIX-RTX4090-O24G-GAMING graphics card

24GB GDDR6X for 4K workflows

The ASUS ROG Strix GeForce RTX 4090 OC Edition targets enthusiasts and professionals who need 24GB of GDDR6X memory on a 384-bit bus. It connects via PCI Express 4.0 and drives up to four displays through two HDMI 2.1 and three DisplayPort 1.4a outputs. The card hits a 2640 MHz boost clock with a 450W TDP and requires a 1000W power supply.

Stepping up from 10GB or 12GB cards

Moving from a 10GB or 12GB GPU removes the VRAM ceiling that forces texture downsampling in modern titles and professional scenes. The 24GB frame buffer lets you hold full 4K and 8K assets without streaming stalls. The jump pays off when your current card hits 100 percent memory utilisation at 4K ultra settings or in large 3D scenes.

PCIe 4.0 x16 bandwidth ceiling

The PCI Express 4.0 x16 link caps theoretical throughput at 32 GT/s per lane. On platforms limited to PCIe 3.0 the same slot delivers half that bandwidth, which can surface in compute workloads that stream heavy textures each frame. HDMI 2.1 and DisplayPort 1.4a set the external display limits: 7680 x 4320 maximum resolution with HDCP 2.3 protection.