I had already published small excerpts about the new socket from time to time, but since the launch is getting closer and closer, I would like to show the whole socket today based on the data I was able to gather from various sources and also explain why continuing to use the old coolers even after adapting the mounting kits might not be a good idea most of the time. Today’s teaser image shows a small photo montage of an original drawing and the recently leaked cutout of the possible socket cap.
However, what I have for you today is completely sufficient to construct suitable cooling solutions for the new socket. Since I know that many of the cooler manufacturers have not yet received any documentation, but the time window for the industry, which is already shaken by the pandemic, is getting narrower and narrower for new developments, I understand today’s article also as a small assistance for those who would like to start with the development or even have to do so.
Comparison of the sockets – old against new
First, let’s take a look at the new socket compared to its predecessors and consider the obvious differences. I don’t even have to explain much, because you can see it at first glance by the dimensions and the shape. In this context, the backplate is also interesting, so I picked out the relevant construction drawing of the last three LGA sockets:
The first thing you might notice is the new heatspreader (IHS), which is now rectangular instead of square. This has a big influence on the optimal positioning of the heatpipes in air coolers and is especially in coolers with DHT (Direct Heat Touch), so without a real heatsink, quite an important factor for the possible performance. Because then only the ground heatpipes cool. If these are unfavorable, that’s it with the performance, because we know exactly this problem from AMD’s Ryzen CPUs and the asymmetrically placed dies.
Water coolers are no less affected by this, because the coldplate with the micro channels is also the focus here for an optimal design. Lucky is the one whose cooler has already been adapted for Ryzen or which is already designed for rectangular sockets (Ryzen, Threadripper, Xeon) (picture above). Then it should be enough even with a new mounting kit loose. Smaller, round coolers in all-in-one compact water coolers should be able to get her, however, as already on the current Ryzens, quite problems.
The exemplary superposition shows here a well-suited block (Alphacool XPX Pro), whose microchannels cover more than just the IHS, however, it would make more sense to limit the dimensions somewhat. The best would probably be a mix of rectangular shape and width reduced to the IHS for the area with the flow. On the following page you will now learn everything about the mounting, the heights and also about the necessary contact pressures and the limits of what is acceptable.