Is gddr5 graphics card compatible with sabertooth 990fx motherboard?

Yes, a GDDR5 graphics card can be compatible with a Sabertooth 990FX motherboard, provided that the graphics card uses a PCIe interface, which the motherboard supports. The Sabertooth 990FX typically has PCIe x16 slots suitable for modern graphics cards. However, ensure that your power supply meets the requirements for the specific graphics card you intend to use.