Quoterelatively large
I wanted to argue that its size makes up for either noise or temperature vs the same HX 370 (HX 470 is just a rename, aka refresh), and while in noise, it's about the same for Cyberpunk 2977:
Cyberpunk 2077 ultra * (dB):
BOSGAME VTA-439: 44.8
GMK EVO-X1 (HX 370): 44.4
, the temperature on the GMK EVO-X1 (HX 370) is still much better: 65 °C vs 78 °C.
VTA-439 vs EVO-X1, performance is about the same (since the HX 470 is a rename (aka refresh) of the HX 370).
The BOSGAME VTA-439 is also 57.8% larger by volume (this is the "relatively large" part, I guess): 1.578 = (154*152*50)/(110*107*63).
The BOSGAME VTA-439 is also 28% heavier (764/595). Not that it's an important metric, but it doesn't help the cooling and/or temperatures either.
The BOSGAME VTA-439 is also more expensive.
What is going on?
In Cyberpunk 2077 ultra external monitor (unplayable at 28 FPS), the VTA-439 is 12% faster [than the EVO-X1], but consumes 39.6% more energy (101.2/72.5).
This makes the EVO-X1 24% more energy efficient ((25.1 FPS/72.5 Watt)/(28.2 FPS/101.2 Watt), (if the taken FPS and Watt numbers are about the same test case)).
So this may explain it (a TDP beyond the sweet spot reduces energy efficiency).