Take a quick look at the 600B and it will look similar to its smaller brother, the 500B, since both are based on the same platform/design, have exactly the same connectors, and only 100 W of power as the difference, at least on paper. However, the 600B unit performed much better than the 500B I reviewed since it registered excellent ripple suppression, which is contrary to the mediocrity of its smaller brother, and a quieter overall operation. Voltage regulation and hold-up time of both units was almost the same, but the 600B exhibited much better ripple suppression, which was enough to give it a significantly higher score than the 500B. Some components apparently changed to bring these improvements about, though the 600B still wasn't able to pass my Haswell test based on Intel's leaked instructions. Here I should note that the latter are admittedly based on an extreme scenario, and EVGA informed me that they actually tested the 500B and 600B with Haswell units, which had them perform well in all instances. Yet I still have to use Intel's methodology, even if it looks totally out of this world, and, yes, its specifications are impossible to meet for group-regulated PSUs, which includes these EVGA Bronze units.

I strongly believe that the 600B should be equipped with four PCIe connectors instead of two, and some more peripheral connectors would surely also boost its usability. The strongest features of this PSU are probably its strong price/performance ratio and EVGA's support. Many of you would definitely like it to have modular cables, at least some, but those would also increase its price, and EVGA obviously sought to keep its price low. If you can't stand affixed cables, one of EVGA's entry level SuperNOVA units would most likely be a more suitable choice.

To conclude, if I had to pick between the 500B and 600B, I would definitely spend a few more bucks on the stronger unit since it provides much better ripple suppression, higher efficiency at normal loads, and, on top of that, a quieter operation.