AMD Ryzen 7000 CPU Direct-Die Cooling Can Provide Up To 20C Decrease Temps, IHS Sizzling Spots & Temps Analyzed
On: September 29, 2022
AMD’s Ryzen 7000 Desktop CPUs are formally obtainable now however there appears to be a priority over the temperatures that the chips produce. As you’ll have observed from our evaluate, the Zen 4 CPU lineup will get actually sizzling and requires top-of-the-line coolers to remain beneath management.
AMD Ryzen 7000 CPU IHS / Die Hotspots, Direct-Die Cooling, Air/Water Cooling & Temperatures Analyzed
In our evaluate, we noticed temperatures for the AMD Ryzen 7000 CPUs hovering and typically even surpassing previous 90 levels Celcius. Whereas that is beneath the 95C TjMax and as AMD states, these are nicely throughout the efficiency and temperature targets of their CPUs, customers can nonetheless see get increased temps if they’re making use of Guide OC or leaving PBO to Auto. Sure motherboard makers corresponding to MSI have already integrated Thermal Restrict profiles that may scale back voltages, resulting in temps at a specified goal, resulting in cooler operations on the identical efficiency.
2 of 9
Excessive overclocker, Der8auer, has determined to take issues to the subsequent step with Direct-Die cooling. To realize this, Der8auer designed a prototype delidding package that was used to take away the IHS off of the Ryzen 7000 CPUs to entry the chiplets beneath it. We’ve already detailed what lies beneath the delidded chip right here. After the elimination of the IHS, a {custom} (prototype) Direct-Die body for the Ryzen 7000 CPUs was CNC-milled. After the body is full, all that must be performed is to scrub the chip because it nonetheless has some solder glue and Indium solder over the interposer and chiplets to get some liquid steel over the dies.
To put in the Direct-Die body, the AM5 LGA 1718 socket was eliminated totally from the ASUS ROG Crosshair X670E GENE motherboard and the delidded CPU was positioned on the socket. The direct-die body was then screwed into place. Utilizing an EK AM5 water block with a custom-loop cooling setup, the AMD Ryzen 7000 CPU was capable of obtain a 5.5 GHz all-core frequency with temps hitting solely 70C. That is a 20C drop from the 90C and 5.3-5.4 GHz clocks that have been beforehand reported.
AMD Ryzen 7000 Desktop CPU Direct-Die Cooling Earlier than & After (Picture Credit: Der8auer):
2 of 9
In one other evaluation of the AMD Ryzen 7000 CPU temps, Igor Wallossek from Igor’s Lab has proven off the efficiency of the IHS itself. Below an infrared digicam, we are able to see that the IHS just isn’t capable of unfold the thermal load evenly and the areas across the CCD and the IOD are the most well liked.
Additionally, it seems like making the IHS thicker did not work out nicely as each Igor and Der8auer have concluded it to be a damaging side for cooling. The thicker IHS implies that the warmth must be dissipated by the cooler a lot faster or the CPU will get actually heat. As such, liquid coolers are beneficial to make use of with Ryzen 7000 CPUs in comparison with air coolers. The IHS itself is round 4.5 mm thick.
Igor’s cooler testing exhibits that not one of the air coolers can maintain CPU temperatures beneath 90C beneath load with the AMD Ryzen 7000 CPUs whereas liquid coolers can enable round 75-80C temps in case you are operating a extremely good setup with a lot of airflows.
General, this exhibits that AMD Ryzen 7000 CPUs are positively the most well liked chips available on the market immediately and you will want to take a position a lot of cash in high-end coolers simply to maintain them beneath a traditional working temp.
