Monday, April 24th 2023
AMD Ryzen 9 7950X Passively Cooled with Copper Blocks
A Reddit user has shared their experience of passively cooling an AMD Ryzen 9 7950X, with some modifications to the setup. Using the Streacom DB4 passively cooled case, the user u/AromaticImpress7778 pulled off cooling a processor with 16 cores and 32 threads with a TDP of 170 Watts. Interestingly, the Streacom DB4 case rates CPU support for only 65 Watts, meaning some modifications were in place. To support the high-TDP CPU, the user used two of the one-kilogram copper bars and attached them to the case. Heat is transferred to the two one-kilogram blocks using the case's default plate and an additional 233-gram copper plate for the CPU and motherboard. These big copper blocks are not soldered to the case, but instead, the user puts Thermal Grizzly Conductonaut liquid metal between copper parts and Arctic MX-6 between the case and copper.
To cool the AMD Ryzen 9 7950X and MSI B650I board, accompanied by HDPlex GaN 250 W and 64 GB of memory, the system did well enough for a passive build. After running the system at full load, the CPU reached 95 degrees Celsius for CCD1 and 95 degrees Celsius for CCD2. The external panels of the Streacom DB4 case were getting 50C to 60C of heat. Additionally, the user noted that the usage of this system will be more relaxed, as it will not run under full load for a prolonged period. Regarding the system's total weight, the entire build weighs around 13 KG, with 4.4 KG of that being only copper. The case weighs 7.5 KG, and the other parts weigh about one kilogram.
Sources:
Reddit, via Tom's Hardware
To cool the AMD Ryzen 9 7950X and MSI B650I board, accompanied by HDPlex GaN 250 W and 64 GB of memory, the system did well enough for a passive build. After running the system at full load, the CPU reached 95 degrees Celsius for CCD1 and 95 degrees Celsius for CCD2. The external panels of the Streacom DB4 case were getting 50C to 60C of heat. Additionally, the user noted that the usage of this system will be more relaxed, as it will not run under full load for a prolonged period. Regarding the system's total weight, the entire build weighs around 13 KG, with 4.4 KG of that being only copper. The case weighs 7.5 KG, and the other parts weigh about one kilogram.
17 Comments on AMD Ryzen 9 7950X Passively Cooled with Copper Blocks
What is the cost co the copper block?
I am not sure why on earth you would use this when we have heatpipes? It is like crawling back to the tree.
Cool work nonetheless.
But that's more of a testament of how poorly 7000 series scales with additional power.
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The tricky part about the copper bars that are the point of the article is that they do seem to be bars which... sucks for cooling. What cooling needs is as much area as possible - radiator, fins, basically. Chuck of copper adds some capacity to store heat but not much beyond that. With this amount of copper there could be a significant short-term advantage but that gets saturated quite quickly.
Funny thing is, raw material is about same cost as a noctua cooler ;) lol
how much of a Noctua cooler is copper the heat pipes and the plate that contact the cpu. Fins look like aluminium.
I’ve only had dh15s which came with 2 fans, don’t know about the others.