Archive for March 22, 2012

I was in need of picking up another gallon of distilled water at Wal-mart today, and decided to stop by a few more stores and do a quick evaluation of water purity of a few different brands.  In addition, I wanted to better understand the importance of water quality and scale since there is no data on how water quality changes when run in a loop.  I’ve read or heard a few people say that store bought distilled water just isn’t good or reliable enough and that you really need to buy ultra pure water.  I have used regular distilled water in non-plated water cooling loops for years now and have even run tapwater in a loop for over a year now just for this nagging myth being spread about.  Since I bought my own water purity meter, I now had the tools needed to see for myself and wanted to share my findings.

This test is sponsored by martinsliquidlab.org…:)

Water Quality Meters

First, let’s look at the meters.  It doesn’t break the bank to buy these, I spent under $100 to buy them both:

I initially started testing both electrical conductivity as well as PH, but after a while realized that the PH was generally the same.  It’s hard to measure with such little conductivity, but all the samples were within 6.5-7.5 PH which is neutral.

The conductivity meter is an HM Digital COM-100

http://www.tdsmeter.com/products/com100.html

SPECIFICATIONS

EC Range: 0 – 9990 µS; 0 – 9.99 mS
TDS Range: 0 – 8560 ppm (mg/L); 0 – 8.56 ppt
Temperature Range: 0-80 °C; 32-176 °F
Resolution: 0-99: 0.1 µS/ppm/mS/ppt; 100-999: 1 µS/ppm; 1000-9990: 10 µS/ppm. Temp. resolution is 0.1 °C/F
Accuracy: +/- 2%
EC to TDS Conversion Factor: Non-linear conversions for KCl, 442TM or NaCl solutions, selected by the user.
Calibration: Digital calibration by push button.
Probe: Detachable platinum electrodes
Housing: IP-67 Waterproof (submersible; floats)
Power source: 3 x 1.5V button cell batteries (included)  (model 357A)
Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches)
Weight: 90.7g (3.2 oz)

The COM-100 meter is calibrated with a 1413 µS solution.

The meter comes factory calibrated with a 1413 uS solution and appeared to be reading fairly accurately, so I proceeded to test with that factory calibration.

Electrical conductivity or EC is a commonly used indicator to measure water purity.  While conductivity itself isn’t the only measurement goal, total dissolved solids (TDS) in ppm (Parts per million) are also routinely converted from this number.  To keep it simple, I’m just measuring the conductivity in this test and including a conversion table that was included with the meter to TDS if you are so inclined.  Distilled waters typically should be better than 10uS where municipal water systems could be as high as 500-800uS.  In water cooling we have had all sorts of numbers thrown out there with suggestions that grocery store distilled wasn’t good enough.  In addition there was not any data in regards to how quickly this water becomes ionized in the loop which is important when considering the relevance of purity.

So with that….let’s get on with some measurements..:)

i7-3930K CPU Swiftech Apogee HD

Posted: March 22, 2012 in Blocks
Tags: , , , , , , ,

Welcome to my fifth i7-3930K series of CPU block tests, the Swiftech Apogee HD.   This is Swiftech’s successor to the Apogee XT Rev2 sporting the same premium prescribed pressure and minimal loose parts mounting system in an all new top with multiple port outlets and completely redesigned base.  This new model promises an increase in thermal performance, reduced restriction, lower cost, and black, white, or gold plated (Limited Edition) brass tops.

This sample was sponsored by Gabe from Swiftech, thanks!

Manufacturer Specifications

http://www.swiftech.com/ApogeeHD.aspx#tab1

Product Details:

ap.o.gee: The farthest or highest point; the apex; a final climactic stageThe Apogee™ HD is Swiftech’s new flagship CPU waterblock. Close to 18 months in the making, it was designed to surpass its predecessor the Apogee™ XT in all critical areas:
  • Improved thermal performance with emphasis on Intel® and AMD® latest and upcoming processors: the HD is Socket LGA2011 (Intel®) and “Bulldozer” (AMD®) ready.
  • Reduced flow restriction compared to the Apogee XT Rev2.
  • Innovative features, with the introduction of the multi-port connectivity:   two more outlet ports have been added for dramatic flow rate improvements in multiple waterblock configurations and when used with the new MCRx20 Drive Rev3 radiators that now also include two additional inlet ports (3 total); read more about “Flow Parallelization” in the section below including examples and in-depth explanations.
  • Improved thermal performance out of the box with the inclusion of high performance PK1 thermal compound
  • Cosmetic appeal: the Apogee HD is now available in two colors, Classic black or Fashionable white to match high-end case offerings from NZXT™, Silverstone®, Thermaltake and many others.
  • Reduced cost of ownership.

Features:

SUMMARY
Improved Performance World’s best thermal performance based on our comparative testing, and 2ºC better than the Apogee™ XT Rev2.
Low To Moderate Flow Restriction 30% lower flow restriction than the Apogee™ XT Revision 2.
Exclusive Triple Outlet Port Design
Ability to parallelize the flow to the graphics, chipset and/or memory waterblocks to improve overall loop performance by dramatically increasing the flow rate where it matters most: in the radiator and CPU waterblock. This exclusive feature can be easily activated when the block is used in conjunction with the new MCRx20 Drive Rev3 radiators that now also include 3 inlet ports.
 
Another benefit of such setup is that it is now possible to use reduced tubing size for the devices installed in parallel without unduly taxing the pump, resulting in less clutter, and easier tube routing in cramped spaces.
Compression Fittings Compatibility Chart 

Primary Inlet/Outlet

Secondary Outlets

Primary Intlet/Outlet

Secondary Outlets

With 3/4″ Tube OD fittings Max 3/8″ tube OD fittings With 5/8″ Tube OD fittings Max 1/2″ Tube OD fittings
Fine-tuned Retention Mechanism, with universal Desktop Processor Compatibility 
Swiftech’s retention mechanism is widely recognized as the simplest and safest to use. It has been further enhanced with added attention to details and quality, such as hollowed thumb screws, and improved back-plate fabrication.
  • Adjustable screws provide compatibility with all Intel Desktop Processors:
    • Socket 1155, 1156, and 1366 (back-plate included)
    • Socket 775 (not included, mailed free of charge upon request)
    • Socket 2011 spring-screw kit is included!
  • An elegant Multi-mount hold-down plate provides compatibility with all AMD Desktop processors:  sockets 754, 939, 940, AM2, AM3, 770, F, FM1, as well as legacy Intel Server socket 771 processors. The kit is not included with the Apogee HD, but supplied for free (shipping not included), upon request.
Available in Black or White The Classic All Black will give any system the high-tech look you are looking for, or the fashionable white combined with the new MCW82, Bridges, and MCP35x pump top (also available in white) will allow you to build elegant and distinctive systems.
Shipped with High Performance Thermal Compound The Apogee™ HD ships with PK1 thermal compound highly rated by enthusiast users and reviewers (and confirmed by in-house testing) for its excellent thermal performance and ease of application.
Lower Cost More affordable than the Apogee™ XT and other top Performing Blocks on the market (the HD also includes 1/2″ fittings and clamps, whereas many of our competitors do not).
There is quite a bit of information there,  but the HD does enhance several things over the XT including thermal performance, reduced pressure drop, and reduced cost.  They also note the “Triple Outlet Port” feature which can be used to parallelize flow in more complex loops.  In addition they note that black or whilet POM material is and option, better PK1 compound is included, and cost has been reduced despite including barbs and clamps which all others do not.  In general the specifications include more information than any other block I’ve seen, perhaps a bit too much for your average user to absorb in one sitting, but still a good informative collection of information on what has changed over the previous XT.