Radeon HD 4600-series pixellated online
Chiphell have post a new Radeon card, and claiming that is one of HD 4600 series product. As you can see, They photoshoped the card, maybe want to protect their sources. HD 4600 will be the successor of the HD 3600 series, and performance will be raised.
The HD 4600 series have multiple memory setup scheme, supports up to 1GB GDDR3 runing ar 1000MHz. Because of the detail of cooler have been PSed, so here is a cooler pic leaked earlier.