I’m not tech expert but same as @samcool55 and @Jpo_Fett I think that it is not good idea to put PSU like this in build especially when good, not high end PSU’s are available for good money and something better than no name should last longer than warranty says. The weird thing (if I can call it like that in case of no name PSU that is from China) is that as I know, declared wattage should be equal to Amper x Voltage and in this case 23A x 12V = 276w so that’s the power you get, but in that case you can’t even be sure about that. In my opinion going for cheap, unknown PSU’s isn’t worth it.