When it comes to high end gaming systems flaunting two or more video cards, your system’s stability really depends on the power supply. First, you don’t want to have substandard power getting to your magical video cards. Second, if not enough power is getting there, you risk unintentional circuit damage. This is often why going NVIDIA SLI or AMD CrossfireX can separate the good from the bad in power supplies. Let’s take a look at a power supply Thermaltake guarantees will handle your best 3-way graphics/hex-core gaming system. It’s 80PLUS Gold certified, flexes 1200 watts of muscle and is from their Tough Power Grand series.