YouTube channel SkatterBencher not way back revealed a on-line video on the best way to overclock AMD’s Ryzen 7 5800X3D processor, no matter the chip turning into locked from standard overclocking by AMD. Within the video, Skatterbench managed to overclock the 5800X3D to a tremendous 4.74GHz with all of AMD’s voltage and multiplier boundaries in place.
For the uninitiated, AMD has purposefully locked out the Ryzen 7 5800X3D from common overclocking procedures because of the 3D V-Cache technological innovation the chip posses. AMD doesn’t give actual features as to why the 3D V-Cache stops overclocking, however there are a pair of variables that may trigger potential points.
Simply one of many main unwanted side effects of introducing 3D V-Cache is points with warmth, and additional heat created from the added cache instantly. Consequently, the 5800X3D runs hotter than AMD’s common Ryzen 5000 CPUs.
One other may very well be an problem with the 3D V-cache’s sensitivity to voltage, on condition that AMD has minimal the 5800X3D to a most voltage of 1.35v VID, which is noticeably a lot lower than the 1.5v different Ryzen 5000 chips can use below distinctive issues.
Presumably method, this has not stopped overclockers from bypassing these constraints and overclocking the 5800X3D. Contemplating that the primary multiplier, together with Precision Enhance Overdrive — and the curve optimizer — have been disabled or locked, this leaves basis clock (BCLK) overclocking as the one different substitute to tune clock speeds. That is just because the BCLK multiplier is managed by the motherboard, not the CPU.
Nonetheless, BCLK overclocking is a extraordinarily inconvenient method of overclocking today, because the BCLK frequency units the frequency baseline for all different parts on the motherboard, which embrace RAM, USB ports, PCIe slots, SATA drives, NVMe drives, and extra.
Whenever you overclock the BCLK, you not solely overclock the CPU but in addition the comfort of the motherboard components that reference the BCLK. BCLK OCing can be inclined to “RTC Bugs” that may inflate benchmarking scores as properly.
The one exception to that is motherboards geared up with exterior clock generators. These boards can bypass overclocking all the weather on the board, excluding the CPU and reminiscence. Having stated that, these forms of motherboards are extraordinarily uncommon, significantly on AMD platforms the place each single solitary CPU (excluding the 5800X3D) has an unlocked multiplier.
SkatterBencher’s peak Ryzen 7 5800X3D overclock is available in at 4.74GHz, with a 104MHz BCLK. Overclocking was completed on Asus’ Crosshair VIII Extraordinary motherboard, with a customized loop operating parts from EK’s Quantum watercooling lineup.
Because of voltage offsets and Asus’s specialised Voltage Suspension characteristic, SkatterBencher was ready to override AMD’s optimum voltage output of 1.35v for the 5800X3D, to a biggest voltage of 1.375v.
Voltage Suspension is a one in all a form side offered by Asus that can enable the person to set voltages towards particular temperature targets, allowing the CPU to make use of larger voltages at scale back temperatures, and pulling once more voltage at increased temperatures to protect the CPU’s well being and health.
In Prime95 assessments with little FFTs and AVX enabled, the 5800X3D managed an all-core clock velocity of 4.21GHz at 1.176 volts, with peak temperatures jogging at 93.4C.
With AVX disabled in the exact same check, that most important clock jumps as much as 4.36GHz on all cores and a voltage of 1.208, with temperatures hovering about 86-87C.
Having stated that, the CPU was ready to realize an full biggest core frequency of 4.74GHz below nice illnesses — presumably beneath one-main workloads. This can be a 240MHz frequency benefit over the 5800X3D’s most default improve frequency of 4.5GHz.