As this issue seems to have been resolved with new drivers I'll mark this thread as solved now.
Probably because Windows starts writing into the virtual memory on your hard drive when the RAM is filling up.
Still have the issue there! I've received emails from AMD asking if the problem has been resolved, that's something at least!
Remember to fill this in guys so they know, even if you've filled this in before just do it again so they know there are still issues.
http://www.amdsurveys.com/se.ashx?s=5A1E27D25AD12B4F
Only takes a minute to fill it in.
You don't need to put your part number in, and you don't need to fill in any 'Optional Information' under the description box.
When you do 'Describe the Issue', just put 'Memory leak for 6xxx/5xxx cards' and paste a link to this thread. No need to go into detail they should already know.
We need enough of these filled in so try to do more than one if you can 🙂
