Didn't GN cover this in their transients video, the thing that SFX PSU's sometimes have to make compromises in terms of circutry due to size constraints and that's why often people that report black screen issues were running some sort of SFF build?
Good point, I need to go back and rewatch it. Though, it's not BSOD/black screen/shutdowns or anything GN described as symptoms in their video though. It's just driver crashing and shitty performance - and so far the drivers don't look like they're even capable of "soft" crashing at all.
GN came to that conclusion based on the NZXT's bundled mystery meat Gold SFX in the H1.........couldn't find much on it because "C750" keeps coming back to the retail ATX unit.
But the SF750 is what, the undisputed king of SFX (unless CM's upcoming 1000/1300W can dethrone)? It's not just any old SFX PSU. I'd have to check but I really don't remember SF600 or SF750 lacking in capacitance pretty much anywhere (maybe bulk cap). SF750 has always been the staple of SFF and so many people have powered just about all RTX 30 series and RX6000 GPUs with it, problem-free; those 3080s and 6900XTs are seriously no joke for transients.
That's one theory - the other theory is the DP cable. But that also doesn't really make sense, unless the GPU outputs are simply sensitive to
any cheap cable on
any port. I already have a VESA certified 1.4 cable on my M32Q, it's only the S2721DGF to the side that had an old 1.2 cable.
And the Dell has always been running at 60Hz only, barely any bandwidth requirements.
And before the new PSU, changing over to an HDMI 2.0 cable didn't change anything either.
And it wasn't any more stable/better with the Dell completely unplugged, single monitor only.
I'll look if it makes any difference but I can't see how the junction temp can ever realistically get below 40C, considering that it's about 5-7C over the GPU temp, so for the junction to be below 40C I'd need like 35-33C GPU temp, my water cooled 1080 barely ran that cold at idle though the temperatures aren't necessarily comparable.
Junction will vary with sample so I guess if you have high ambient and a bigger delta you're probably just out of luck. At idle I have a 4C delta, at 300W it's about 12-13C. My ambient is about 20-23C though.
It doesn't have to stay that cool all the time, just long enough under active cooling to trigger fan stop. Then I'm actively doing work on the computer it'll slowly warm itself back up to about 50 edge/54 junction while the fans are off, at which point they come back on and the cycle starts again.
So if you can't get to that trigger point, they won't stop. Makes sense on startup, computer barely has any heat in it.
I figured if they left the GPU business that many years ago and still are in business making cables then their cables must be damn good lol
