SkatterBencher overclocks ‘non-overclockable’ Ryzen 7 7800X3D to 5.4 GHz
AMD Ryzen 7 7800X3D CPU, Source: HardwareCanucks
In his usual fashion, Pieter “SkatterBencher” Plaisier has a long video and article explaining different strategies for overclocking the X3D processor. His extensive knowledge is shared in an easy-to-read format with graphs and diagrams. This is a great chance for people outside the overclocking community to catch up with all the changes that are introduced with even more complex CPU designs, such as the 8-core Ryzen 7 7800X3D with 3D V-Cache.
Yesterday AMD lifted the embargo on 7800X3D reviews and SkatterBencher was among the first to show the benchmarking results. However, unlike most reviewers, Pieter focuses on overclocking, which is ironic because this particular CPU is not designed for overclocking (at least not officially). AMD has locked frequency and multiplier overclocking on their 7000X3D series, but there are still ways to speed it up.
The overclocker explored many options in making the 7800X3D faster, the CPU has been overclocked using Precision Boost Overdrive 2, curve optimizer, EXPO (memory OC) or by using asynchronous ECLK (external generator). A combination of PBO2 and ECLK adjustment tends to be the most effective OC strategy but also the most complicated one.
In the end, overclocker archives 5.3 GHz clock boost in SuperPI one-thread boost test, with two cores ‘almost hitting 5.4 GHz’:
AMD Ryzen 7 7800X3D CPU, Source: SkatterBencher
While this overclocking attempt shows that higher frequency on 7800X3D is achievable, the path chosen by SkatterBencher is not recommended for most users. The X3D series is not designed for overclocking and there are many stability issues that may occur when tinkering with voltages or external clock generators. Needless to say, this CPU is already extremely fast out of the box and there is really not much of a reason for anyone to seek more performance.
SB is now exploring different overclocking methods, some of which already bear fruit in 5.6 GHz CPU-Z validations. The results will vary depending on the processor, but it is not recommended to go past 1.15V due to the extreme voltage sensitive of the 7800X3D CPU, he adds.
AMD Ryzen 7 7800X3D CPU, Source: SkatterBencher
Source: Skatterbencher (article), Video:
