The pad mod in practice: So.Must.That!
Question of the day: How much do the board and contacts heat up after my conversion? I measure the back of the graphics card again, using the same, original 4-way adapter from NVIDIA and the already installed temperature sensor, which directly monitors one of the 12V- contacts. The board is still coated with a calibrated medium in the relevant places: transparent, silky matte measuring lacquer, as used for the “tropicalization” of boards, and I have provided two holes in the backplate where I can make my measurements.
I’ll first show you the first minute again, but as a 30-second time-lapse at double speed. After applying the load of 600 watts, it already takes a bit longer and you can already see that the affected area heats up much slower. The measuring point “PCB Below Contacts” is again located on a soldering eye of the 12VHPWR connection and also represents the temperatures of the plug contact (Long-Term) with a delta of maximum 2 Kelvin. After all, we mustn’t forget one thing again: The connection is heated up vigorously from this very spot, as always.
But how does the whole thing develop over a period of 30 minutes? Just for that, of course, I have another 30-second time-lapse video showing that we stay up to 15 (!) Kelvin cooler here. That is a real hammer and if I am to be honest, I had expected something less. If one could still actively cool from the front (which the engineers prevented), the value would probably even be above 20 Kelvin. Unbelievable, but true!
Again, I’ve put together the superposition for this so we can see the positioning better.
And what do we learn from this? Even the terminal is still 13 Kelvin cooler than the pad-less original, the measuring resistor shows 14 to 15 Kelvin delta at the contact and the NVIDIA adapter’s sheathed cables also save a few Kelvin. I have to let that sink in first, because the backplate is not actively cooled. Small pads, big effect. Let’s go to the summary!
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