https://wccftech.com/fastest-amd-radeon-rx-6900-xt-cards-sapphire-toxic-extreme-asrock-oc-formula-most-expensive-prices-starting-over-2000-euros/ > The fastest AMD Radeon RX 6900 XT graphics cards such as the Sapphire Toxic Extreme & the ASRock OC Formula have started hitting retail shelves. Both designs are insane with lots of GPU power and overclocking capabilities packed within them but they are also priced more than twice as much as the reference MSRP of $999 US. > The Sapphire Radeon RX 6900 XT Toxic Extreme & the ASRock Radeon RX 6900 XT OC Formula were unveiled this month and aim to be the fastest offerings from each manufacturer. Both products are based on the Navi 21 XTXH silicon which is designed for extreme overclocking and features a 4 GHz power limit that has already enabled overclockers to hit over 3.2 GHz overclocks on LN2 cooling.