Graphics cards are 5% (as are motherboard) and I believe websites are supposed to charge the tax based o the state the card is being shipped to. Definitely though 5% is worth considering the cost savings on a product at that price as that could be $75.

Just to be clear, you were always required to pay sales tax for any applicable online purchase in any state which has sales tax. It is called use tax and it was your duty to report it and pay it to your state. The only thing which has changed is that since so many people were not paying use tax, the courts decided that it is fair for the states to require the online retailer to charge the sales tax at time of purchase (and forward the collected sales tax to each applicable state at certain periods) in order to ensure that the sales tax starts being paid. The primary purpose of this change is to increase revenue for the states (money which was owed to them all along but was unlawfully not being paid by residents) and help level the playing field between local retailers and online retailers to improve local economies where the purchasers reside (more even pricing encourages the consumer to buy locally).

The change is good. Not only for the reasons already mentioned, but also because it now allows you to buy from online retailers in good conscience knowing that you aren't defrauding your local government, and it is now much easier since you no longer have to file the paperwork to report use tax since the online retailer now does all of the work for you.