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Danger Den TDX Block, MAG Pump, DD MAG II and Maze 4 GPU Block
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by Greg King on August 3, 2006 in Water-Cooling

Are you looking to delve into the world of water cooling, but don’t know where to start? Danger Den has sent us a slew of products to get our rig up and running, including the new AMD TDX block. Since this is also my first high-end water cooling rig, I relay my experiences to you.

GPU Block, Radiator


Moving on, lets take a look at the Maze 4 GPU water block.

The water block is assembled in the same fashion of the TDX water block but lacks a clear top. This is not a big deal as the Maze 4 will be on the underside of the video card.

More info provided by DD:

Complete Block Assembled with Top and O-ring Total weight approximately 6oz (171 grams)Anti-Corrosion Design (NEVER will corrode)! High Flow 1/2″ or 3/8″ OD Fittings Low flow restriction low pressure drop Stainless Steel Hold Down Machined Lapped and polished beyond 1200 grit Pressure tested before shipment to 85psi

It should be noted that the Maze4 is not compatible with every video card. Danger Den provides a list of compatible video cards from both ATI and NVIDIA. I will be using it on my eVGA 7800GT.

Compatibility ATI:

Compatibility ATI: Most Radeon Series blocks (9500, 9600, 9800, and X800 series) with the two hole mounted fans. Excludes the All-In-Wonders before the X1900 Series
X1600/X1800/X1900 series uses the “X” series hold down like the NVIDIA 68/7800 series

Compatibility NVIDIA: *NEW* support for the 6800/7800 series (NOT 7800GS) and support for the “4” series on up to 59XXFX. Holes are available for the GeForce 2 and 3 series and should work also. The 6800 series uses the 4 bolt hold down style versus the standard two bolt pattern of previous cards.

While this is the block I am working with, I should mention that DD also offers a low profile version of this water block for those of you running SLI. The performance is the same but the top of the block sits closer to the GPU than the regular Maze4.

Next up we have the radiator. The radiator in the kit is the Black Ice Pro and can accommodate one 120mm fan either pulling air across the fins of the radiator or pushing air across.

Before we get to the pictures and my thoughts, lets take a look at the specs provided by Danger Den

  • 2-pass Radiator specifically developed for PC water-cooling
  • Now with improved internal pressure drop for increased cooling efficiency.
  • New high-durability custom formulation acrylic paint finish
  • Rated for 378KCal per hour (1501 BTU per hour)
  • 120 mm (4.72 inch) Copper core consisting of flat tubes for maximum heat conductivity
  • High-density louvered copper fin configuration for enhanced heat dissipation
  • Built-in plenum chamber for increased performance and noise reduction
  • Self-tapping 120mm fan and case mounting holes for ease of installation
  • Compatible with G 1/4 BSPP thread O-ring fittings.
  • Compact 157 x 133 x 25 mm (5.9 x 5 x 0.98 inch) dimensions allows it to fit inside most mid-tower cases

As you can see, the radiator was built with a 120mm fan in mind and because of this; you can see the mounting holes for such a fan. Another view shows how thick this radiator is. Those of you with smaller cases might want to take note.

One thing I noticed with the Black Ice Pro is how close the fins are together. This allows more surface area for air to blow over and chill the water as it passes through the radiator. You also notice that all of the barbs are 1/2 ID (inside diameter) and are what DD calls their perfect seal fitting. They have this name as there is a definite ring around the end of the barb, and once a clamp is used to secure your tube to the barb, there is virtually no chance for water to escape from the fitting itself.