? my old 590sli board had the heatpipe over the vrm s seemed to do ok ? I guess a downdraft type cpu cooler may help to push air across the board over the tower type ??
[my old board with the heatpipe system]
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128011
cpu cooler that can push air down to and across [example]
[from overview]
''Besides voluminous airflow, the included fan delivers 90 degree rotated airflow to avoid heat radiating from the motherboard and cool motherboard chipsets surrounding the CPU socket. ''
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103177
I know AMD boards get hot like you say but did not know intels did atleast this z87 don't at all seems nice and cool on the chipsets ??
''I would like to replace both of those with copper heatsinks but I cannot find any reference to those exact sizes as well as the thickness of the tape that goes on them to cover the chips attached to the board''
use to be a lot offered on this but these days so many boards got nice factory sinks on them no one ''MODs'' that anymore like in the old days I guess ??
I googled sabertooth x58 heatsink mods and the google images and looked over pictures that may have somr mods to look at like this guys ??
https://vip.asus.com/forum/view.aspx?id=20111017001806726&board_id=1&model=Sabertooth+X58&page=1&SLanguage=en-us
http://www.techpowerup.com/forums/threads/ghetto-mods.55387/page-17
http://www.overclock.net/t/709813/north-bridge-heatsink-for-x58-chipset/10
also thermal pas of correct thickness may do better than paste if the heatsinks are push pin or in a spot where you dont need it drooling all over the place
don't forget some paste may be conductive
don't know if these would fit ??
http://www.amazon.com/Asus-A8N32-SLI-Motherboard-Cooler-yd124515mb/dp/B009MQQCYQ
[how there used and mounted]
http://www.pcstats.com/articleview.cfm?articleid=2239&page=3