AMD's vs. Intels GPU on the Desktop: Radeon HD 8670D vs. Intel HD 4600
 

Despite Haswell's arrival on the desktop, AMD is in no trouble at all from a graphics perspective. At the high end, Richland maintains a 17 - 50% GPU performance advantage (~30% on average) over Intel's HD 4600 (Haswell GT2). All things equal, even Trinity is good enough to maintain this performance advantage - a clear downside of Intel not bringing its Iris or Iris Pro graphics to any socketed desktop parts.

While there isn't a substantial increase in GPU performance between Richland and Trinity, AMD's GPU performance lead over Ivy Bridge was big enough to withstand Haswell's arrival. Note that although we're comparing performance to Haswell here, Richland exists in a lower price bracket. If you want the best desktop solution with processor graphics, AMD remains your best bet.

http://www.anandtech.com/show/7032/a...-8670d-hd-4600