My 976* is not warm, it's hot. I measured the top of the case at 114* degrees when in standby*.
That* is not good. My 975 stays cool in Standby; gets warm(er) as I crank it higher. How long have you had it? Did you discover right away or did it manifest after some time?
On that note, when I receive mine*, I will plug it in and leave it in Stand by for several hours. I do NOT want to install only to remove & return - too much cabling.
Good air flow is the best long term thing you can do for your equipment.
I believe Bryan’s is WELL past what “good air flow” can reverse
I've emailed support about this.
Let us know ASAP. I hope you kept your box