"same performance" does not exist, which is why they are two different models... Control + F and search for those two to see the difference. It's not huge, but it's there. If you're looking just for a budget CPU that won't bottleneck current GPUs, get the 4460.
Im really confused, because you know from 4460 to 4690 its about 40€... it's a lot of money, i could get the ram i want with this money... please help...