Corsair took a mainstream CWT platform and managed to deliver a good product for a nice price after making a couple modifications. The new CX600M surely isn't a top performer, but making it one was not Corsair's initial purpose. They were, instead, looking to offer the best possible price/performance ratio, so some compromises had to be made. Although the maximum temperature at which the unit can deliver its full continuous power is restricted to only 30°C, all of my test sessions went smoothly at a considerably higher ambient, but the CapXon caps on the secondary side most likely won't keep their good performance if they work at above 40°C constantly, which I suspect to be the reason behind Corsair's conservative temperature range, at least for full continuous power output. The strongest advantage of the CX600M is, without any doubt, that it is affordable given its performance and the modular cabling design it utilizes. Its biggest drawbacks, on the other hand, are that it only has two PCIe connectors, which greatly restricts the unit's usability, and its very low hold-up time, which is the result of the small bulk capacitor. Corsair apparently preferred using a Japanese capacitor with a smaller capacity in the APFC instead of a higher capacity Taiwanese one. They may be right, since Japanese caps tend to last much longer, but a hold-up time below 10 ms with a limit of 16 ms as specified by the ATX spec doesn't look good at all.
To wrap up, the CX600M offers good performance, modular cables that are flat and stealth, and is backed up by Corsair's excellent support. The CX600M is, if you can live with only having two PCIe connectors, a very good deal, as clearly shown on our performance-per-dollar graph. Based on the latter, I give to this unit our budget award.