470
Dell and Lenovo may limit mid-range laptops to 8GB DDR5 RAM in response to rising memory prices
(www.notebookcheck.net)
This is a most excellent place for technology news and articles.
IGPs are very dependant on memory speed. Many uses gains from faster memory speed (but I can't give you one out of memory), but most games gains more from memory latency than raw speed (with some exception, like Stellaris).
Usually, if your app is CPU heavy, you'll gain from RAM speed.