Reusing Your Current Intel Heatsink for Alder Lake May Be a Bad Idea

When Intel launches Alder Lake later this year, it’ll also transition from the LGA1200 socket introduced with Comet Lake to a new socket, LGA1700. LGA1700 is a new socket with significantly more pins and it’s not the same shape as Intel’s previous LGA115x / LGA1200 sockets.

Igor’s Lab has published some details on the new socket, with drawings and diagrams that appear to be genuine. They show a slightly larger motherboard plate (78mm x 78mm, compared with 75mm x 75mm for current LGA1200), but the shape of the CPU itself is now decidedly rectangular.

The new CPU’s different shape could cause issues for anyone trying to reuse a CPU cooler. It’s entirely possible — even likely — that LGA1700 CPUs will have cores and hot spots in different physical places on the chip. Some heatsinks may not cover the entire CPU core effectively. This could also apply to AIO watercoolers. Those with smaller blocks may not cool the chip effectively, and the microchannels in the heatsink may not be in ideal places. Igor thinks Xeon and Threadripper coolers might work for this new setup because those sockets are more rectangular. It depends on what kind of conversion kits become available and which manufacturers support them.

Another wrinkle in the situation is z-height. LGA1200 supported z-heights of 7.312mm to 8.249mm. LGA1700 is thinner, with a z-height of 6.529 to 7.532mm. It’s not clear if the reduced Z-height is a consequence of Intel’s die shaving, which improves heat dissipation, or if the company was able to reduce socket height through other changes. Either way, the two standards only overlap at the very bottom and very top of their respective ranges.

Some conversion kits might be able to deal with this by changing the height of the base the cooler sits on, but this will depend on what kind of CPU cooler you have. Igor notes that heatsinks with heatpipes intended to directly contact the CPU could fare particularly poorly if Alder Lake’s hot spots are in different locations than Rocket Lake and previous CPUs.

We’re not preemptively declaring that no conversion kit will work. Companies such as Noctua have built a reputation for excellent hardware, and I actually don’t believe the company would release a conversion kit for a product if it couldn’t provide an acceptable experience. Don’t be surprised, however, if it turns out that a lot of high-end coolers for standard AMD and Intel CPUs today (as opposed to Threadripper and Xeon) can’t be easily adapted for Intel’s new platform. In this case, there may be good reason to opt for a new CPU, if you plan to upgrade when Alder Lake comes out.

Continue reading

Protect Your Online Privacy With the 5 Best VPNs

Investing in a VPN is a smart choice right now, but the options are vast. To help narrow things down a bit, we've rounded up five of our very favorite consumer services.

EKWB Launches Peltier Cooler Powered by Intel Cryo Cooling Technology

Intel and EKWB have jointly announced a new waterblock that integrates a Peltier cooler.

Look Up: You Can See All the Planets in Our Solar System Tonight

You've probably seen diagrams of the solar system that place the planets in nice, orderly lines, but the truth is they're often on the other side of the sun from Earth. We happen to be going through a period during which all the planets are visible. You just have to know where and when to look.

How Apple Is Collecting Your Data in macOS Big Sur

Apple's new Big Sur has been accused of some serious privacy violations and unfriendly user-access controls. The situation is a bit more nuanced.