I have been using Aerocool Vp-450 for nearly two years and in fact it is ok. However, for some time there are two versions on the market called Aerocool vp-450, the earlier one produced by Andyson with a power on the + 12V = 336W line and another version with a power of 312W. Below are links to both, with photos of the nameplate:
1.http: //archiwumallegro.pl/zasilacz_aerocool_vp450_450w_bardzo_cichy_24h-1771637082.html
2.http: //pcshop33.ru/price/hardware/p_c_2:t_107:s_2:info_105710_BP_450Vt_Aerocool_VP_450_ATX12V_V2.3.html
So when it comes to Andyson, I have a good opinion about this power supply. It is quiet at rest, after a long period of use, the fan does not rattle, you cannot hear the coils. He survived a short circuit on the board, the board died, but the protection was on time and turned off the power supply before damage. It is used with Vtx HD4850 DDR5 (OC @ 625MHz + G630). Voltage stability average, but nothing more than ATX standard quite typical in this price segment. Fluctuations on the + 12V line were in the 12.05V -12.25V fork, between the iddle and the full load of the power supply in the OCCT.
However, it is difficult for me to say something about the weaker version (312W), because it is probably a completely different platform. For today, at a low price, I would recommend the Chieftec GPA on a nice CWT platform, although it has slightly shorter cables.