Yes and yes as the CPU even bottleneck s the 460 to a degree. If the 480 is a good price tho shouldn't stop you from the purchase. See bottlenecks aren't an absolute stoping point as each game places demand on you CPU in different amounts. Also is the upgrade a good increase over you old GPU? If you have a 280 or 380 your already hitting the bottlenecing which will make the upgrade increase small. Anything 7000 series and back then go for the upgrade.