Posts Tagged ‘Block’

DT 5 NOZ CPU Block Preview

Posted: February 27, 2012 in Blocks
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Welcome to my preview of the all new DT 5NOZ CPU waterblock.  He asked that I keep the internal details private at the moment, but I will attest to the internal design being something very different.  The name of the block itself says quite a bit, but I’ll have to leave you with your imagination on what’s going on inside.

For now I’ll just share with you some photos, DT’s product announcement, and my pressure drop test as a teaser.

I would like to give special thanks to Erik from  for the preview sample.



Xtremesystems’s announcement

DT 5Noz waterblock

Hello, let me present my new waterblock. I call it the 5Noz, as there is an unique nozzle inside the block with 5 openings.Martin was good enough to take these excellent pictures for me, thank you Martin!

I machine this block myself on my CNC.

I use copolymer acetal for the top and the spider. With each, I flycut the top with a slow speed and fast feed which gives it checkering like a gun grip. Because it’s a circular cutter, the pattern changes over the top and spider, very coarse near the center and fine near the edges. G 1/4 ports, of course, spaced very widely apart, so I don’t think there will be any fitting issues. There is a spotface at each fitting for proper O-ring sealing (can’t seal on the textured surface). Internally, the top has a couple of horseshoe shaped features that poke-yoke the nozzle so you can only install it in the correct orientation. The O-ring is kept round, which means super short cycle time for me to machine, but it’s also not fiddly to deal with, easy to reinstall if you need to.

The top and spider are also available in white acetal, I have parts finished but no good pictures yet.

The spider is removable and is available in Intel pattern, AMD pattern shortly, and this could be replaced for future socket designs. The spider has a pocket that the springs go down into. This hides the springs a little bit, but also the thickness of the material underneath the springs will allow a metal spider to be used instead of acetal.

The base is 110 alloy copper, 44 microchannels are machined in two steps 0.020 inches and then 0.012 inches. The base contact surface is machined flat and smooth, and is not polished. M4 female threads are in the base, which means that during disassembly for cleaning you only deal with metal threads, so less likely to strip something. The M4 stainless steel cap screws use the full head, so the hex wrench is a nice big 3mm size, less likely to be rounded out.

The nozzle is machined from 360 alloy brass and allows a unique flow path through this block. The nozzle is one of the best looking parts of this block, I wish I could share it, but it’s good and it’ll likely be…adopted…:rolleyes: The nozzle allows a flow path that contacts more fin leading edges, parallel flow paths, and provides a lower pressure drop. The base is bowed by the nozzle. One side of the nozzle is flat, and the base contact face of the nozzle is machined into a convex surface. Close tolerances must be held on the base, top and nozzle to get the bow to the 0.005 inches it’s designed for. To do this, I have to match the parts as they are built, as there are a few thou’ that parts when combined can drift. This means that it will be possible to custom assemble to any amount of bow. I think 0.005 bow is about right, but but I also think bigger IHS processors might do better with less bow, and smaller might do better with more :shrug: In any case, any amount of bow within reason can be specified.

The backplate is machined from 6061-T6 aluminum, and has machined chamfers to accept the heads of flathead M4 screws. This keeps the backplate and screws from slipping around when installing it to the mobo. There is a chamfer for LGA775, one for 115x, and one for 1366/2011. LGA2011 hardware is included, all hardware is stainless steel except for the springs which are zinc coated steel.

I’ve tested the 5Noz and the Koolance CPU-370 in my test loop.

D5 Pump with DT top, setting 5, 12V
Single 120mm radiator
Single Yate Loon D12SM-12 fan, 12V
Q6600 die simulator (copper block machined to Q6600 die sizes, Q6600 IHS soldered to these die)
200W applied to cartridge heaters in the die simulator

5Noz => 31.9C temperature delta between die simulator thermocouple and air entering the radiator
CPU-370 => 33.4C delta

5Noz => 2.55 GPM
CPU-370 => 1.27 GPM

Samples are with a few excellent, non-biased reviewers. Hopefully you can get some independent reviews of this block shortly.

Price will be $87.95 USD.


While my CPU thermal test rig is currently apart from my recent LAN event rebuilding, I do have the ability to test pressure drop very quickly.  So…I did and…
We have a new KING of low restriction in my 2011-2012 round of CPU blocks tested!
This block is a good 50%+ less restrictive than my previous next best grouping utilizing microchannel designs….wow!  It is the least restrictive microchannel block I’ve ever tested and nearly as low in restriction as large open pin designs of several years ago.That 5NOZzle is quite impressive in reducing restriction.
I should also comment on how excellent the machining quality on this block is.  Unlike some of the mass produced blocks which have minor irregularities, this one is excellence in precision and machining quality is as good as it gets.  All the parts come together with high precision and a lot of thought has gone into the design.  It is one of those blocks that comes apart and goes together as if you had a swiss watch in your hands, just very well machined with extremely tight tolerances and quality.While I don’t have thermal results yet, the restriction is exceptionally low, the machining quality is exceptionally high, and the design is something very different..:)
Thermal Preview 3-11-12
While I don’t have anything to compare yet, I did finally get my new 3930K processor up and running:
I replaced the standard M4 nuts with DD brass M4 nuts and 35lb springs which I plan to use for all of my 3930K block testing for mounting pressure consistency.
I figured as a placeholder, I’d give you a quick screenshot of my very first 3930K mount:
Still in the process of getting all my software installed, but I’m thinking I’ll hold back a bit on the the overclock at 4.5Ghz for some extra stability.  I’m pretty sure I could easily see 4.8+ out of this processor, but my old 2600K was pushing a bit hard and testing is hard enough without having to deal with occasional stability issue.  This overclock is extremely stable and the way I like it..:)  This is also pushing considerably more heat over the 2600K as can be seen in the water/air delta numbers hitting nearly 6C despite the strong full speed d12SM12 fans on a quad radiator.  I’m not quite sure what the actual Watt load is, but it’s very very high.  According to Tom’sHardware here, at 4.5Ghz it should be pushing roughly 175W. I wonder if that’s even enough myself considering system power consumption goes from 360W at stock settings loaded clear up to 516W (+156W).  Bottom line the 3930K is throwing out tons of heat, so this is a pretty good cooling test regardless of the final overclock used.
This is the first block I’m testing with the new processor, so I don’t have anything to compare with just yet.
Despite the very large LGA2011 6 cores and extra heat load, 4.5Ghz is still running fairly cool and a bit cooler than my 2600K at 4.8.
This is a new core distribution chart showing the deviation between core temperatures.  The first two mounts were done with the block lettering vertical to the left, where the last three mounts were done horizontal in line with the graphics card and motherboard lettering.  While the differences are within standard deviation error, my best mount #4 was with the block oriented horizontally.  My hottest #5 core and differences between cores was also better using the horizontal orientation.
I really like this block, it flows like crazy and looks good in my new 3930K based system.  I kind of like the white block with black spider option myself.  I did utilize my own mounting hardware for testing consistency and to make mounting a bit easier.  My only reservation would be the shipped standard M4 nuts that came in my package and stiff springs, but I understand the latest version is coming with large black thumb-nuts to improve the hardware package from what I recieved.  I measured the springs compression force and came up with roughly 20lbs per spring fully compressed which is a bit more stiff than I prefer using myself.  I used 8lb springs and brass thumb-nuts from the M6 which I plan to use for all my 3930K testing since it allows fully compressing the spring and feedback when complete so I can get a good measured installation force.  I also did not use the supplied aluminum back-plate since the 2011 platform has one built in but it looks well made.  In general the system is still very much a loose parts type system which takes a fair bit more patience and time to install than some of the more refined mounting systems out there that have reduced the loose parts down to only a few.
More to come as I get a few more 3930K based block tests done.


i7-2600K CPU Danger Den M6 Block Preview

Posted: January 21, 2012 in Blocks
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Welcome to my preview of the all new Danger Den M6 CPU block recently announced.  My last Danger Den block test included the acrylic top MC-TDX that I tested as part of my Q6600 CPU block round.  While the MC-TDX was a simple and effective two piece acrylic top and hold down design, the M6 steps it up several notches in a completely redesigned all metal 4 piece form of metal artwork.  In my experience Danger Den products have always been leaders in producing low restriction / high flow designs and the M6 continues that trend while also improving thermal performance significantly over the previous MC-TDX.  The all metal build and heft of the block is worthy of note and inspires confidence in purchasing a product that can take a beating with high mounting pressures.  The sample I received for testing was actually provided prior to the retail package being released and as part of this test, I have been working on evaluating a special shim/nozzle package that will compliment and further enhances performance. Rather than hold onto all the data until complete, I figured I’d release what I have so far and update as I complete evaluating more shims/nozzles.

Before getting started, I would like to give a special thanks to Jeremy & Dennis from Danger Den for sponsoring the preview sample as well as the prototype shims soon to also be regular products.

Before digging in on my own review, I thought I would quote the manufacturers specs info available:

Press Release

from Danger Den’s website:

Danger Den® introduces a new CPU Cooling Block – DD-M6 CPU Block™ the highest performing CPU block to date from Danger Den.


Astoria, OR – December 28, 2011, 7:16 PM Pacific Standard Time – Danger Den announced the release for sale the new highest performing CPU waterblock, the DD-M6 CPU Block™ with shipments beginning January 2nd, 2012.

The DD-M6 CPU Block™ replaces the long running MC-TDX block improving upon the performance and reliability.  Thermal performance is significantly improved while maintaining a low flow restriction design.  Available in solid copper and brass parts that are non-plated or nickel plated.  A new and improved mounting system is also part of the DD-M6 CPU block package allowing reliable mounting pressure in an attractive package.

“Danger Den released a CPU block that we are proud of.  Improved performance, built like a tank, and almost 100% produced in the US. The Top Plate, Mid Plate, Hold Down Plate, Hold Down parts are all machined in our facility or within 50 miles of Danger Den”, said Jeremy Burnett Danger Den’s President, adding “ The hold down package has been significantly improved for the LGA 2011 socket and previous socket versions.  It looks great and makes the mounting process simple for the consumer.”

Developing a solidly constructed CPU block was imperative to the Danger Den product line.  It provides the protection and reliability that customers demand.  Danger Den does intend to offer a lexan version for the customers that prefer the aesthetics of a clear block.

Stock and availability for the Intel Sockets including the LGA 2011 is January 2nd, 2012.  The AMD version is to follow in two weeks. 

MSRP & Product Page Links:

DD-M6 CPU Block – Brass: from $74.95

DD-M6 CPU Block – Nickel: from $79.95

Photo Gallery:


from Danger Den’s website:

  • 100% copper 110 Base with Micro Fins
  • EN Nickel Plated Mid Plate and Top
  • *NEW* Stealth Spring Mounting System
  • 1/8″ Powder Coated Steel Hold Down
  • Threaded fitting ports are G 1/4 BSPP
  • Complete Block with all O-Rings
  • Pressure Tested to 50psi
  • Fittings sold separately
  • Machine lapped and flat mirror polished
  • 58 Heat Dissipating Fins at a 0.5mm pitch and 0.25mm channel.Providing enhanced transfer of heat to the water and optimum coverage of the CPU
  • Significant temperature drops on high TDP processors and major Overclocks.  Observed over 7C drop versus MC-TDX.
  • Ready to install designed and tuned for your system for top performance
  • Anti-Tarnish coating applied to prevent finger print or environmental changes.  This specialized formula also has no effect on cooling potential.
  • Corrosion will not occur when used with other Copper and Brass parts.  Avoid using non-anodized aluminum (or all aluminum) if at all possible for maximum component life.
  • Verify proper mount before power up.  Check the thermal compound imprint and verify the block isn’t touching any capacitors.
  • Optional back plate is 1/8″ acrylic and covers the Intel back plate.  A gasket surround the Intel back plate for additional protection.

Of particular interest to me is the .25mm channels and while it’s not noted here the fins are skived rather than machined allowing this micro structure.  The block really is a totally new design over the previous generation.

i7-2600K CPU XSPC Raystorm

Posted: September 26, 2011 in Blocks
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Welcome to the 7th block in my series of i7 – 2600K CPU block tests. You may be familiar with the extremely popular XSPC Rasa that many users enjoy in the popular kits, it is an excellent block possibly one of the most popular due to the exceptional value it provides giving top 2011 generation block performance levels.  XSPC has spent many months building basically an all new block called the Raystorm!

A special thanks to Paul from XSPC for sponsoring this test!  They provided the tested production sample prior to these blocks hitting the shelves, but I believe you should be seeing these next month at retailers.


First let’s go over a few basic highlights and characteristics.

  • High Performance Copper Base  56mm x 56mm x 3mm deep
  • Microchannel & Nozzle Plate Design
  • CNC Cut Acetal Top
  • Intel kit supports sockets LGA775, 1156, 1155, 1366, and 2011 and comes with back-plates
  • Full Cover Back-plates for more MB protection, and easy peel and stick type mounting.
  • Thumb-nut Stud/Spring system style hold down attachment
  • G1/4 threaded wide ports are compatible with most fittings include 3/4″OD compression fittings
  • Metal reinforced (aluminum) acrylic hold down
Update 2-9-12
Working on the copper top version, similar design, but instead it has an aluminum hold down and solid copper top.

XSPC Raystorm CPU Block Preview

Posted: September 23, 2011 in Blocks
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A special thanks to Paul from XSPC for providing the all new Raystorm block sample.  This is the next generation CPU block from XSPC which incorporates pretty much all new internals, a larger base, an illuminated block hold down, and the same easy mount back plates of the Rasa block.  I understand this isn’t intended to replace the Rasa block, but it is intended to be an advancement in performance.

Testing coming soon, in the mean time here are a few quick pictures.

Pretty much all new internally over the previous pin matrix and smaller base of the Rasa.  The only thing carried over from the previous generation are the back plates and hold down screw system.  This Raystorm is also sporting some factory LED lighting that give sort of a perimeter back light effect to the metal reinforced acrylic hold down plate. I have no doubt it will be extremely low in restriction with that large slot nozzle and deep micro channels and since the Rasa is already an extremely strong performer, this new block should be VERY interesting….

…off to testing..:)


Update 9-24-11

Completed the pressure drop testing and we have a NEW KING! of low restriction for 2011 generation blocks.  The new Raystorm is a good 1/3 the restriction of the previous generation Rasa and even lower restriction than the supreme HF.  That’s sort of what I expected looking at the deep channels and large slot nozzle.

First the detailed results:

And what good is a test without some comparative results:

Now for the painfully slow thermal testing piece.  We know that low restriction doesn’t necessarily mean optimal thermal performance.  Some times it’s a bit of a balancing act, but microchannels in general have been known to do both well where pin designs are generally more difficult to retain low restriction and high thermal performance.

And a couple more photos showing the retention hardware and surface finishing.

I am very pleased to see the clean lines of the new hold down plate of the intel socket.  The metal reinforcing insert has a nice matte black brushed finish, the acrylic edges leaves a nicely framed look, and the lack of any screw heads also presents a more modern and finished look.

The retention hardware is carried over from the previous generation Rasa. Only change I see is the additional metal washer and now loose hold down plate (not bolted). I’ll reserve my thoughts until I’ve gone through the multiple remounts of the block during thermal testing.



Welcome to my sixth in a series of CPU block tests I’ll be working on for the new i7-2600K processor, the EK Supreme HF.  This is EK’s flagship water-block sporting an acrylic/plexi top, copper bottom, and their new “Easy Mount” system.  This particular block is the “Copper Plexi” flavor, but the block also comes in full copper or copper acetal flavors.  You can even get the block in blue or green plexi colors if that’s what you want…so plenty of top options to choose from. I was very anxious to get my hands on this block considering the EK Supreme V1 was the thermal winner in my previous Q6600 CPU testing roundup and this newer HF model is the further refined successor to the original.

This sample was sponsored by Eddy from EK waterblocks, thanks!!

Before getting started, how about a picture of the block installed and ready for action!

Packaging & Accessories

I’m no different from anyone else in enjoying a good box opening to see what goodies lie within. I also have had my share of products damaged during shipping over the years, so I consider packaging protection very important.  Nothing worse than having to submit an RMA ticket because the UPS man tossed your precious package around more than it could handle.

The block comes in a larger than average box in a sleeve with flashy black/orange/gray graphics.  It does give a nice presentation and good first impression.

Upon removing the box sleeve and opening the inner box, you first see the hardware packet, AMD hold down, and user guide.

I read through the user guide and found it to be a good basics guide that should be adequate for your average user.  Below you can see a sample of page 1, it comes printed in black and white and a double-sided letter sized paper.  I thought the content was good, but not quite as nice as a few color manuals I’ve seen on other blocks.  You can also download and print the manual if you want a better copy or loose the original

Digging further into the box, you come to the block nestled and nicely sandwiched between two layers of foam as well as being individually wrapped in a sealed tamper proof plastic bag next to a tube of MX-4 mini tube of compound.

I think this was the first block to incorporate a tamper seal on the block packaging which ensures the block you received has not been tampered with.  This is a nice clever touch…I like that.  In this world of RMA happy consumers, this is one way to ensure a new product.  Very good!!

After all the unwrapping of individual packets, this is the collection of parts you get plus the user manual previously noted:

Short of barbs, you get a very complete package for both AMD and Intel users.  The only part I couldn’t make sense of myself were the metal washers in the lower right.  These were not explained in the user’s guide, so I went on the assumption that they go below the springs to prevent scratching of the black hold down.  They worked well under that assumption

Overall an excellent complete package short of barbs and the packaging protection was also extremely well done.