MSI GTX 660 Gaming Video Card Review

There are four screws holding the Twin Frozr IV in place making it exceptionally easy to remove.  As an added security measure you will find a warranty sticker over one of the screws that will puncture if you attempt to remove it.  The sole purpose of this is to catch people who attempt to RMA the video card after voiding the warranty.  

Rumor has it that MSI has added this "feature" to all of their current generation cards including the high-end Lightning.  I guess there is no hiding when you want to go cold with these cards.

Under the cooler you'll clearly see the component layout.

Power is delivered using a conservative 4 phase VRM located on the side opposite of the video connectors.  There is no stock PWM cooler but as the photo shows there are two mounting holes flanking the MOSFETs allowing for a custom solution.

The Twin Frozr has become a common cooling solution on all of the high-end MSI video cards and is often regarded as the best factory cooler on the market today.  Twin Frozr IV is a fourth generation cooling design that features two specially designed cooling fans over a massive heatpipe array.  The same style cooler could be found on the popular GTX Lighting however, this one is considerably smaller and only features two heatpipes. 

As we mentioned before we have seen this PCB before as it was used to build the GTX 650 Ti Boost.  It isn't uncommon for a company to reuse a board design especially when the chips are electrically identical.  Given the custom nature and solid design we can see why that PCB has been reused.