Den MC-TDX Multi-core CPU Block Review
Welcome to my review of the Danger Den MC-TDX CPU waterblock.
The "MC" in MC-TDX stands for "Multiple Core Processor", so you
will continue to see both the standard TDX as this MC-TDX. The
larger pin matrix for the MC-TDX is specifically targeted at
multiple core processors, where a larger cooling area is needed. Danger
Den has noted that the standard TDX is designed for single or dual core
processors, and the MC-TDX is designed for dual or quad core
They both utilize the same type of casting construction and tops,
but they have different pin matrix designs, coverage areas, and nozzle
components. Let see more of this new block and see how it
enjoy our typical "opening up a new present" moment and see what you
get as part of the packaging. First off my box of Danger Den
goodies arrived via FedEx in a well packaged box, and the delivery
person even range my doorbell to hand deliver the package, that was a
nice pleasant surprise! I received several products that were
boxed nicely in a standard box with packaging peanuts and it was
professionally packaged box in a box style double protection.
Specifications & Features
- 240 Heat Dissipating Columns for enhanced
transfer of heat to the water and optimum coverage of the CPU
- 100% copper 110 material
- Acrylic and brass top options
- Threaded fitting ports are G 1/4 BSPP for use with any similar spec
- Complete Block with O-Ring
- Pressure Tested to 50psi
- High flow 1/4", 3/8", or 1/2" Chrome Plated Fittings
- Machine lapped and flat mirror polished
- Stainless steel hold down
- Anti-Tarnish coating applied to prevent tarnis from finger prints or environmental changes.
This specialized formula also has no affect on cooling potential.
- All Copper - No aluminum or coated aluminum that can have
galvanic corrosion, all materials are copper, brass, stainless steel,
- Preassembled block and barbs - No waste in plastic barbs you won't use and perfect barb installation.
- LGA 775 Only Custom top - Provides a more custom look, rather than a univeral hold down with many leftover holes.
Here are several pictures I've taken at different angles and distances
to give you a good viewing of the block for yourself. I'm mixing
a few others within the entire review as well, but here is a large
majority of the pictures for your viewing pleasure. (Click
thumbnails to enlarge):
Heat Transfer Surface Area
The MC-TDX uses a round pin style matrix common in other CPU blocks.
It's a very efficient and effective matrix as the round micro
pins significantly increase the amount of heat transfer surface area,
and the micro pins and round shape are efficient in reducing pressure
drop or restriction. With 240 micro pins you effectively multiply
the surface area many times over a flat surface and the larger area
covered with pins, means it has the ability to cool a larger area as
needed by multiple core processors.
Construction, Materials, Quality, and Aesthetics
Overall construction of the block and attention to detail is superb.
The base is very finely cast from C110 copper and having seen some
casting problems in past on other blocks, I was pleasantly suprise that
I could not find any.
These pins are very nearly reaching the limits of how small
copper pins can be cast, and they are done so perfectly in my sample.
The base bottom is very adequate in finish, you can see by the
photo above in the gallery how it is a nicely finished base nearly a
mirror in reflection and a straightedge test proved flatness to be
fairly common knowledge that lapping a base much beyond 1000 grit no
longer yields additional performance gains, so the specified 1200 grit
The top is fabricated of 3/8" (9.3mm) thickness acrylic sheet and is
very precisely CNC machined and the edges are nicely finished.
Some folks may not prefer the use of Acrylic (Lucite) due to
durability concerns. Fortunately for you all metal block-heads
out there, Danger Den has produced the same top in a brass option for
you to choose from and it's at a very reasonable price. Go for a brass top if you want that added durability.
The barbs are nickel plated brass, (no flimsy cheap plastic barbs
here!). Using my digital calipers the inside diameter is a heavy
10.15mm, that's as bored out as it gets for G1/4 threading. The
barbs have all been installed and the block pressure tested at 85psi,
so no worries about leaks, you shouldn't have to touch these barbs,
they come preinstalled and pressure tested. On some of my other
blocks that came with plastic barbs, I had a hard time getting tubing
back off of them and getting tubing onto them without the barbs turning
on me, brass barbs don't have that problem.
The block screws as previously noted are a stainless round-head type
screw that appears to be a nice 6-32 screw dimension and the head
itself receive a standard 2mm allen head. All of the remaining
mounting hardware appears to be in good order, nice larger brass
thumbscrews and the necessary studs, springs, nuts and washers and
appear to be in the 4-40 threading form.
The block is very nice to look at with a high level attention to detal.
due to the transparent top, or perhaps it's
the design of the copper mini pin matrix base and all that surface area
for heat conductivity. I
also appreciate the integrated hold down and top. A personal
preference of mine is to have a top that looks custom. The block
exceed my expectations in this area, but I encourage you to look more
at the pictures and decide for yourself.
Pressure Drop Testing
most scientific way to determine a blocks hydraulic resistance is to
test pressure drop.
The pressure drop testing results were the best I have seen to date of any pin matrix style CPU block.
- Dwyer Digital Manometer 475 Mark III - Accuracy .5% of Full Scale. Range 0-200" W.C., Resolution .1" W.C.
- King Instruments 7520 Series 0-5GPM, 250mm scale - Accuracy 2% of Full Scale. Range 0-5GPM, Resolution .1GPM (can be interpolated to .02GPM)
- Water Source - Household water pressure - 50PSI at >5GPM
- Because flow rate readings are instantaneous, household tap water and
water pressure are a good and powerful source for pressure drop testing.
We have a NEW LOW PRESSURE DROP KING OF PIN MATRIX CPU BLOCKS!
While flow rate above 1 GPM is generally adequate for most
systems, it's still important to keep an eye on restriction
particularly when you are designing a water cooling loop with multiple
blocks and radiators in the same loop. The reason being that
every component within that loop will affect flow rate, and if any one
or more than one is restrictive it could reduce the thermal
effectiveness of your other blocks and the radiators. In addition
CPU blocks that are low in restriction leave an open window of
opportunity to nozzles. Adding of a nozzles allows the user
flexibility in adjusting performance and restriction. A CPU only
loop may benefit from a nozzle, whereas a stock setup may be desireable
to maintain performance of other system components.
The Danger Den MC-TDX has an ultra low pressure drop, it doesn't get any better than this for pin matrix style blocks.
Installation on an Evga 680i
The installation on the 680i was not a problem at all. I actually
preferred the larger 6-32 threading of the TDX kit over my previous
4-40 bolts from my D-Tek Fuzion kit. Very basic and
Testing In Progress....Coming Soon
To provide some sort of recommending criteria, I'm establishing the following with a 0-10 scale of excellence.
||It's a good design, I'd give it a 10 if it was more unique.
||I'm very impressed by the flawlessness of all parts included
||This is specified as a "Universal" block, so it was not specifically designed for the 680i
||Multiple top options make this a 10.
||The NEW KING of Pin Matrix Style CPU blocks!
||Testing in progress
So far so good, just need to do some thermal testing to wrap this up..
Where to buy
Danger Den's Website