Originally Posted by hoho
Too bad they have to get by with mediocre memory bandwidth.
It's not really that bad, considering you can still get midrange cards like the GTS 450 or HD6670 with 128bit ddr3 memory (granted you shouldn't get them...). Of course compared to the "real" cards which have gddr5 memory it's not quite half the bandwidth, but the ratio of flops/bandwidth is still roughly similar (well in intel's case they actually don't have that many flops).
Also IGPs can use the LLC cache which potentially saves quite a bit of bandwidth. And things like dynamically generated vertex data would never need to hit memory (or the pcie bus for that matter).
Memory bandwidth won't scale that well though for future chips.
Now SNB-E would have twice the bandwidth too bad it won't have a IGP