YouTube’s ScatterBencher has managed to overclock the brand new AMD Ryzen 9 7950X3D to 5.9 GHz. Efficiently overclocking these chips is not any easy feat, and the expert YouTuber (often known as Massman on HWBot) has revealed an in depth weblog speaking by means of three methods to get probably the most out of your new Zen 4 with 3D V-Cache desktop processor.
AMD’s 3D V-Cache enhanced 7000 Sequence CPUs aren’t as locked down because the earlier technology X3D processors, and due to this fact present a number of angles for overclockers to take advantage of. ScatterBencher determined to overclock his 7950X3D with the assistance of the Asus ROG Crosshair X670E Excessive motherboard and its extremely configurable BIOS. Different key elements price mentioning have been the ElmorLabs Simple Fan Controller ElmorLabs EVC2SX, an EK-Quantum Velocity2 EK-Quantum Energy Package Velocity2 360 CPU cooler, and the reminiscence used was a G.Ability Trident Z5 DDR5-6400 equipment. These identical elements have been used for inventory reference stats and all three overclocking methods outlined under. Nonetheless, please notice that the G.Ability reminiscence was run at DDR5-6000 for additional stability.
ScatterBencher first checked out inventory efficiency throughout a bunch of trade customary benchmarks together with his succesful setup – this clearly provides us a baseline to guage the OC makes an attempt. Within the graphics we’ve got reproduced under, the inventory efficiency within the varied exams are represented by the blue bars, and overclocking beneficial properties are inexperienced extensions.
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The three overclocking methods examined have been; the usage of AMD’s PBO 2 and EXPO, the usage of PBO tuned utilizing Curve Optimizer, and the usage of PBO with an ECLK enhance. The second and third strategies of overclocking have been considerably extra profitable at squeezing out additional CPU efficiency, as you may see from the charts above. The methodology which scored the headlining 5.9 GHz CPU clocks was the second, utilizing the Curve Optimizer AMD launched with its Ryzen Grasp software program final yr, to be used with the Zen 3 structure processors.
ScatterBencher talked us by means of the method of utilizing the PBO 2 Curve Optimizer. Briefly, he’ll broadly tune the entire CPU utilizing a destructive curve offset, step by step dropping the curve till the purpose of instability. He’ll concurrently step by step improve Fmax Enhance Override. Later, tuning is narrowed right down to a per-core foundation. As you may think about, making small per-core changes then working by means of benchmarks with a CPU with 16 bodily cores will be fairly time consuming.
Throughout his overclocking exams with the top-end Ryzen 9 7950X3D, ScatterBencher made some attention-grabbing observations. For instance, he supplied some evaluation of the System Administration Unit (SMU) which permits PBO 2 on these chips. He additionally remarked upon the “severely extra constrained,” CCD with V-Cache, and its impacts on overclocking technique / strategies. Head on over to the ScatterBencher weblog for extra particulars, or sit again and watch the half-hour video embedded under, when you choose.