Using the heatsink of an x570 chipset in the ryzen 9 3900x
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The famous overclocker der8auer has published a curious video where it uses the active heatsink of an X570 motherboard as the cooling system of a Ryzen 9 3900X 12-core processor. Will it work?
The der8auer overclocker experiments using the heatsink of a motherboard on the Ryzen 9 3900X
The overclocker started his experiment using Cinebench R15, where he did two tests with the single-core and multi-core processor. It also clarifies that it has the latest update of the AGESA 1003ABB on an Aorus X570 Pro motherboard. In the first test it reaches 3113 cb and the temperatures were around 80 degrees with the heatsink in stock.
Next, Der8auer tests the processor without any type of heatsink, where, obviously, the equipment shuts down after a few moments due to the chip's own protection against high temperatures. This serves to prove the following point.
Der8auer uses the active chipset heatsink on the Ryzen 9 3900X and places a small aluminum heatsink on the chipset as a replacement. Before this, it underclocks the processor so that it works with a maximum TDP of 10 W, with temperatures of around 50 degrees. In the multi-core test, the processor reaches 427 cb. The chip works with this underclock at 545 MHz and 0.9 V.
However, you can go even further with this heatsink. Currently, the active heatsinks of an X570 chipset have three speed profiles, the stock, the semi-passive and another in which we can disable it completely. However, there is no option for the fan to run faster than the standard speed. By modifying the fan cable, Der8auer made the fan run at its maximum speed (4000 RPM).
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With this new fan configuration, the overclocker returned to testing with Cinebench R15, but with an underclock limiting the CPU to 20 W. The Ryzen 9 3900X reached a speed of 3.6 GHz, with frequent lows at 545 MHz, due to the 20W limitation.
Again in the Cinebench R15 multi-core tests, the processor reached 80 degrees temperature and a score of 434 cb.
The experiment ends here and leaves some conclusions. Yes, it is possible to use the heatsink of the motherboard in a 12 core CPU and a TDP of 105 W. Of course, to do this you need to underclock a very beast and maximize the speed of the fan. Except in some emergency case where we don't have a CPU cooler on hand, we don't see any use in this except as a curiosity. What do you think?
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