You know that feeling of accomplishment when you’ve overcome a huge obstacle and you can’t wait to tell the entire world about it? Well, we’ve got it; we’ve overcome the whole “fan/drive sensor” problem found when installing a non-factory drive in the 2011 iMacs. That means we can now officially announce the OWC Turnkey Program for the 2011 iMacs.

We’re also going to one-up the 2010 program by including upgrade options for both the 21.5″ and the 27″ 2011 iMac models.

That drive sensor thing was a big hurdle. Apple uses a custom firmware that sends temperature info in a non-standard fashion. Unfortunately, unless the drive has this special firmware, the fans spin at full speed. We wanted a solution that would be a long-term solution that wasn’t dependent on a software patch or hack. Though those sorts of fixes can be temporarily effective, we didn’t want to rely on them for two reasons:

1. they put overhead on the bus which can reduce performance
2. a software solution can can fail or be rendered non-functional by a wide variety of actions (software updates, system reinstalls, etc.) which could risk the hard drive and the data contained on it.

So, we went another route and developed a hardware solution that interfaces accurately and properly with what can be viewed as a frustratingly unique temperature data monitoring method by Apple. While our solution adds a little bit to the cost of upgrading the iMac’s hard drives, we feel that cost is more than offset by the advantages it has over software solutions. Article Continues…