Asus’ overclocker SkatterBencher new video Today, despite the chip’s overclocking limitations, he was able to overclock AMD’s top gaming CPU, the Ryzen 7 7800X3D, to 5.4GHz. He managed to get around AMD’s 5 GHz cap by overclocking his CPU cores using an external clock generator.
AMD’s Ryzen 7 7800X3D is the new gaming champion among PC processors, offering blazing fast gaming performance with the help of 3D V-Cache technology. However, due to the thermal limitations of the 3D stacking technology, AMD had to disable manual overclocking of the chip, with the exception of Precision Boost Overdrive or PBO and AMD’s Curve Optimizer.
SkatterBencher was able to get around this with the help of an Asus ROG Crosshair X670E Hero, which has not one but two external clock generators to help with overclocking. To reach 5.4GHz, SkatterBencher boosted the clock speeds using a unique combination of multiple features including an external clock generator, Precision Boost Overdrive and AMD’s Curve Optimizer.
This overclocking strategy is complicated, but very effective in execution. Precision Boost Overdrive is used to prevent power limiting on the chip. The external clock generator is used to physically boost the clock speed and the curve optimizer is used to overvoltage the chip beyond the stock voltage instead of lowering the voltage to stabilize the clock .
This resulted in a peak boost of 5.4 GHz on a single core and a boost clock of 4.85 GHz on all 8 cores at voltages well below 1.2v. This represents a boost of 7.7% at the boost frequency and 10% at the single-core clock compared to the stock frequency.
The overclocking is pretty impressive and shows just how much headroom is really available on some of these chips.Time will tell how quickly the 7800X3D degrades when overvoltage is applied. As you can tell, the overclocking is still impressive: clocked at 5.4 GHz, it delivers practically the same computing performance as the stock Ryzen 7 7700X, and adds L3 3DV cache for better gaming performance.
