Excellent product that is quiet, seems to be well built and easily does all that I require of it. Happily powers a quad core, 2 x optical drives, 2 x graphic cards and 3 x hard drives with no problem at all.
The modular design means that only the cables required need to be used, which considerably reduces the clutter of wiring that can impede access and airflow in the case. The cables are a tad on the thick side but that gives good protection and did not cause any problems with my installation which was extremely easy, even the screws are provided in case you require them. The product is well packaged and a neat touch is the provision of a handy zipper case to keep all the unused cables together.
The unit is very quiet indeed in use and is a considerable improvement over my non too shabby previous power supply unit.
To digress slightly, this is my second unit. The first one to be delivered was thrown over our 6' garden fence gate on to the concrete path by the delivery agent whilst we were out. Seeing a very crumpled box that had also suffered a rain shower on the path on our return was a depressing sight indeed. Despite the very good packaging by Amazon & OCZ the unit had not survived the delivery experience.
Amazon to the rescue though, and it had a replacement unit to me, within 2 days of my reporting the sorry tale, which was delivered in much happier circumstances and, as told above, the unit is happily installed. Full marks to Amazon & OCZ; nul points to the first delivery agent.
To sum up, this is a quiet, well built and very easy to install unit. Highly recommended.