Specifications, Availability and Pricing
With a water block the specifications are pretty simple for the materials. A copper base material is used and milled to make the contact surfaces and the water channels in the opposing side of the block. To keep the water inside the block, there is a channel routed to accept a rubber washer, then a smoked piece of acrylic is used to seal it off and make for an attractive top. The top is held in place with sixteen screws and washers so there is no question that the pressure can be applied for a leak free installation, but it leaves a lot of room in the middle of the smoked acrylic. Danger Den took this room to etch in a "DD" logo and "GTX 470" for even more flash to your investment.
These blocks are designed to come in full contact with both the GPU die and all of the ten memory IC's. To cool the voltage regulators Danger Den has supplied a large thermal pad to be cut down and placed over them to make the contact between them and the block. Out of the box the DD-GTX 470 blocks arrive with all G1/4 threads and will have two "plugs" installed. The choice of barb size is optional, and for mine, I was supplied with two Danger Den Fat Boy barbs for connectivity. With a few coolers I have tested on air, flex of the PCB became a major concern, not in this cooler, though, as Danger Den designed this block with spacers to add structural support.
Danger Den personally tests each block and seals the edge with a "void if broken" type of sticker. This will insure both any claims to be valid if your block does leak, and also should keep you from needlessly taking it apart. While my samples came, as it seems to me, came straight off the mill, it does state that these blocks are hand lapped. If my blocks are lapped it was strictly for removing burs or obvious defects, as the milling marks are very prominent, as you will soon see. I'm not saying that the finish is bad, but to me "lapped" is a term that means flat and smooth, almost mirror-like.
As I mentioned, I received the "satin copper" blocks, and they can be found directly from Danger Den. Aside from the radiator, full coverage blocks can be the most expensive choice you have to make, so you want to make it an educated one. Currently I am looking at the pricing, and by far, I have seen blocks that require much more than the investment of $119.95 directly from Danger Den. With what I have seen from my 470's I can say it will take a serious cooler to manage the temperatures, and I don't think the typical $40 cooler off the shelf will even attempt to offer the cooling needed to make these cards submit to my kind of punishment. This is also the reason I grabbed the 470 in the first place. If you can offer a solution to tame these, you have a really good cooler; the average coolers will get eaten for lunch by these cards.
Time for me to get down to brass tacks and see what kind of a difference the DD-GTX 470 offers to a guy who loves to punish his hardware, or even to the people who prefer silence with benefits over the stock leaf blower attached to the NVIDIA 4-series cards.