I remember some video about how well some developer said Radeon crossfire GPUs scaled (think it was 480s), almost 100%. I can't find it at the moment nor remember more details. In my search a found another interesting nugget.
It certainly would help with the smoothness described and...
I agree but no official dimensions.
I scales an Asus board and got similar
https://hardforum.com/threads/am4-cooler-mounting.1921506/#post-1042742615
Here is my scaling for the ekwb image.
FYI, I am now looking to make a custom mount to turn my existing am3+ cooler 90 degrees so I was...
Still no official dimensions but a pretty clear indication.
http://www.amd.com/en-us/press-releases/Pages/ready-for-ryzen-2017jan04.aspx
"New 3rd Party Thermal Solutions
For enthusiasts and PC builders focused on a premium, quiet, and effective cooling solution or wishing to overclock, AMD is...
I assume you mean from around May 25 2016
https://www.pcper.com/news/Cases-and-Cooling/Report-AMD-Socket-AM4-Compatible-Existing-AM2AM3-Coolers
Later Sept 22 2016:
https://www.pcper.com/news/Processors/AMDs-Upcoming-Socket-AM4-Pictured-1331-Pins
There have been reports that the through board cooler mounting holes have changed from 96 x 48 mm of AM3+
to 90 X 54 mm of AM4.
source 2016-11-19
http://xtreview.com/addcomment-id-46524-view-Differences-in-the-fastening-system-Socket-AM4.html
A new image of an ASUS A320M-C motherboard from a...
hmmm. MSI motherboard? I wonder if they used MSI Core Frozr L. It is listed as supporting AM4.
https://hardforum.com/threads/tpu-guru3d-msi-core-frozr-l-review.1917531/
Yes "90 X 54 mm from somewhere", mostly linked to backplate article. I think it would be safer to say close to 90 X 54 mm rather then those exactly dimensions. We have no idea how they measured it (tape measure, calipers, optical comparator, thumb) . I also assume the backplate was from the...
Sorry, I guess i should have said MY gathering of info.
It still is not official , not much info is new but gathering all the info in one place seems to be, and it makes a better case for this rumor being true. Many people were sure that am3+ cooler compatibility meant am4 compatibility.
BTW...
Someone found my info or I beat them by a day or two. But still nothing is confirmed.
https://www.overclock3d.net/news/cpu_mainboard/amd_s_am4_socket_will_not_be_compatible_with_old_cpu_coolers/1