The first PSU has 228W combined on it's 12V rails. The second one has 12V * 16A = 192W, so the first one has more 12V power. In theory. The first one seems to be more honest? Says it's rated 350W and 400W Peak. The second PSU from the label is a hot mess. No obvious 12V power info, says "400W" then to the right says the model is 300X. With only 192W on the 12V rail it's more a 300W PSU than a 400W. If you put a gun to my head and told me to run one, I'm going with the first one. But neither is that good.