In my corsair 900D case, the air flow wasn't very good. Radiator fans set the exhaust and 2 TY 140's as intake.
My Vega 64 ASUS Strix undervolted reached 85c core, 107c hot spot, 115c VRM.
Since using better thermal pads on the VRM, and adding pads between the PCB and backplate, and replacing stock fans for a pair of Corsair SP120's, the core is now 57c. Hot spot 87c, 73c VRM.
Core and VRM has a massive improvement. Hot spot is still too warm for my liking. How can I reduce it more?
Here's my current setup in my new X71 Core with Noctua 140's as intake. I get the same temps with the X71 chassis by the way. See attachment. Thank you.
Intel Core i9 9900K HT 5GHz
GIGABYTE Z390 Ultra
AMD ASUS STRIX OC VEGA 64
G-Skill Trident 2x8GB DDR4 4000MHz
Samsung EVO NVM.e 250GB
SeaSonic 1250W Gold
Corsair 900D + Custom Loop.