The mount system proves to be simple and straightforward, just make sure you set the pressure screw before mounting. Well, see how consistent the mount system is later, simple may be great but if there is mount variance then simple just does not cut it. Looking back to the fin tower specs, we should see the performance curve favor the higher fan speeds and with the pressure screw adding another variable, we have a lot of test data to cover. Before we move on to the test methodology, we have a few photos of the Thermalright Venomous-X for your viewing pleasure.
If you are familiar with the EVGA X58 Classified, you know the orientation of the CPU socket, if not then this orientation is what I call “Fan perpendicular to socket arm” which is the best performing orientation for the Venomous-X (and most heat pipe coolers) on our bench and will be used for all logged test runs. Without the RAM in the slots, you get a good shot of the overall mount system I described earlier. Now the TIM print, not great as there should be better mount pressure right over the silicon… the print is sorta there, but just not the same as our TRUE. The TIM is not Thermalright Chill Factor 2 that comes with the VX, we toss that aside and use Arctic Cooling MX-3 for all tests. Those of you who have worked with MX-3 before know firsthand of the consistency, which I can only describe as an oily, clay like combination. When I first opened a tube and started using MX-3, I thought maybe I got a bad batch… but no, each tube had the same consistency. For more info on Arctic Cooling MX-3, check out our TIM Round-Up V1.1.
Starting out, we leave the pressure screw alone for 40lbs of mount pressure and run our GT-1850 full out. Our setup nets a 65.95C four-core average, and some very surprising mount variance of nearly 4C. Surprisingly enough, this sort of mount variance is what you are going to see throughout the results. We did have a single run at these settings that was competitive, with a 63.30C four-core average.
Slowing down the GT-1850 did not cure our mount variance, that is for sure. Four-core average sits at 68.8C, and mount variance of 3.14C. The low run would be great to reproduce on a consistent basis, but not to be found for some reason.
Bringing our single Gentle Typhoon to 900RPM, we get a very unexpected result. Our Venomous-X just did not keep the system stable at these settings. Yes, the look on my face was telling and there was certainly head scratching going on.
h3>Dual Gentle Typhoon 1850’s (AP-15) – 40lbs Mount Pressure
Loading up the other side of the VX with a Gentle Typhoon, but again mount variance kills the overall four-core average. Thanks to a 3.97C mount variance, our core average lands at 65.52C.
Setting both fans to 1300RPM, our four-core average maintains a 67.71C, which is a 2.2C increase with fans full out, but only a 1.2 decrease over a single fan at 1300RPM. I expected a little more of a gain with dual fans considering the fin thickness and spacing.
Final stop on the 40lbs thermal performance tour, Gentle Typhoons are sitting at 900RPM. The Venomous-X was able to hold stability and turn in a four-core average of 71.26C and only a 1.36C mount swing, which is our lowest mount variance yet.
Remember, Thermalright added the pressure screw to squeeze more performance out of the Venomous-X design. However, with abnormally high mount variance I am starting to wonder if the pressure screw is what is causing all this variance. On to the next page for the view of performance with 70lbs. of mount pressure.