We tested the HR-03GT in an EVGA 780i-based gaming machine with extremely good airflow. Therefore, results here are effectively a best-case scenario. Temperatures are typically measured through NVIDIA Monitor; however, as it was being finicky, temps were also verified in RivaTuner and spot checks were performed with an infrared thermometer. We measured idle temperatures at the Windows desktop. Crysis was used to place a full load on the GPU, as we've seen in the past that this title really stresses video card(s). We've also included fanless results, for those brave souls that are willing to try it with adequate case ventilation, and compared it to the Sparkle 8800GT fanless card.

HR-03 GT

Several of these results are quite surprising. First, a result of 38C under full load is fantastic, and surpasses even Thermalright's claims on their webpage (45C under load). A spot check of the RAM sinks on the card had them maxing at about 43-44C. The other startling results are the fanless temperature readings. Under full load, the HR-03 GT fanless is 15C cooler than the stock NVIDIA cooler!

Results compared to the Sparkle fanless solution are also impressive.  The Thermalright uses a much larger heatsink than the Sparkle, but it obviously pays off.  The fanless HR-03 is a whooping 36C cooler at idle than the Sparkle and 40C cooler than the Sparkle under load.  This makes the Thermalright a potentially useful fanless solution.

Again, please note our test system had excellent ventilation and represents a best-case scenario, but even so this is quite impressive. Without a fan mounted on the HR-03 GT, RAM sink temperatures climbed to about 57C maximum.

HR-03 GT Installation Conclusion


View All Comments

  • axiomatic1 - Wednesday, March 05, 2008 - link

    I had a similar problem with my Swiftech ram sinks for my 8800gt. The solution (given by swiftech when i called for help) worked like a charm. Essentially, IPA does not act as a degreasing agent. The reason that the sinks don't stick is because they can't. There is a residue of thermal grease on the chips. The way to remove this grease is to use a cleaner that removes grease. Acetone works wonders. When i used the acetone on my chips the ram sinks stuck very well. If this still doesn't work and you don't want the permanence of thermal epoxy there is another solution, also given by swiftech. You get a bottle of krazy glue and put a dab on a piece of paper. Take the pointy end of a paper clip and dip it in the glue and then dab the tip on the ram sink. This leaves enough glue on the sink to make the sink stick, but doesn't interfere with the thermal conductivity of the tape.

    Somewhat haphazard, but my ram sinks are still going strong.
  • 7Enigma - Thursday, March 06, 2008 - link

    Very interesting, thanks for the reply! I plan on building a system soon and will make sure to have both on hand when removing paste and reapplying better paste. I wonder if this holds true for all paste jobs (be it CPU, GPU, Northbridge,etc.). Might get a bit extra performance or at least be sure you have a clean starting point. Reply
  • Thorsson - Saturday, March 08, 2008 - link

    Just be careful with Acetone, it's not like IPA that you can spill anywhere and will just quickly evaporate. Acetone is a strong solvent for most plastics and synthetic fibres. You don't want to see that headline, "Acetone ate my Mother....board". Reply
  • swing848 - Wednesday, August 04, 2010 - link

    Although this thread is ancient, someone may find this useful.

    Another very good, and easily found, cleaner for computer components is ArctiClean 1 followed by ArctiClean 2.

    ArctiClean 1 & 2 can be found as a package at
  • Philscbx - Wednesday, June 02, 2010 - link

    I'd like to recommend a safer degreasing agent used for twenty years.

    It's 'electronics contact cleaner' which is not acetone, and wont melt plastic.

    We use acetone to deliberately melt plastics on aircraft interior repairs.
    Also used for epoxy.

    Acetone is not really a good degreaser where brake/contact cleaner is, and less damaging.

    Smear axle grease sample on scrap anything, from aluminum foil - etc, and actually do the test with both solvents.

    Brake/contact cleaner is highly used for final building of drag race engines.
    It removes all trace of grease and oils holding fine grinding residue.

    The difference using 'electronics labeled' contact cleaner is insurance it won't damage.
  • joeythecat - Wednesday, March 05, 2008 - link

    I guess my first question would be does this cooling solution fit in a Antec P182 case? Reply
  • MamiyaOtaru - Tuesday, March 04, 2008 - link

    I am loving this cooler. With my mobo I can wrap it around the back of the card without interfering with the cpu or northbridge tower coolers. It means I lose no expansion slots. It also puts the cooler right next to my case exhaust fan, so I don't need to mount a fan on the cooler.

    It's overkill, but I have it mounted on a 7900gt. Idles at around 33, loads at 39 (again, no fan on the cooler). The 7900gt isn't really a speed demon anymore, but I do get a decent peformer running very cool with no extra noise. It's very ideal for me.
  • 7Enigma - Tuesday, March 04, 2008 - link

    I am amazed at the results, truly amazed. Unfortunately this design has a crippling flaw that your test (as you mentioned in the article so I'm not faulting Anand) will not show. The hot air is still INSIDE the case!

    As the GPU is notorious for being the largest producer of heat in a case (barring some crazy OC'd quad-core), I don't want the product of that energy to be dissapated into my case, I want it going out the back!

    During my last computer build (3 years ago) I was happy to see the Arctic Cooling VGA silencer (which I own) offer a way to keep temps lower, keep the noise quieter, but most importantly exhaust the heat directly out of the case.

    With this cooler, however, you are at the mercy of your power supply/case fans. If they aren't great, the true benefit of this cooler (overclocking) will not be as good as it could be (noise will obviously be improved).

    As an aside, since I've never owned the 8800GT, is the stock cooler exhausted out of the case or just inside like 99% of all stock graphics cards? From the pictures it looks like the latter and so I guess this cooler is better...but I would have loved to see a similar setup with some ducting to get the heat out of the case.
  • Sooticus - Monday, March 03, 2008 - link

    Those stick on heat sinks are a real problem, especially on the mosfets at the end of the board. There is just too little surface area to stick to. I had one heat sink drop of onto the mainboard during opperation (luckily no damage). I found that a better heatsink for the mosfets could be made by cutting of the end of the old stock heatsink and screwing it on using the original mounting holes. (Anand, If your doing a round up, I'm using a Zalman VF900-Cu )

    BTW - did you end up using the GT's on board fan header or a seperate one?
  • KLC - Monday, March 03, 2008 - link

    Great article, I'd love to actually see the product but all I see is text and blank spaces where pics should be. What is going on? Reply

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