AMD has confirmed that the Ryzen 7 5800X3D does not support overclocking. This shouldn’t be a surprise for anyone who has been following leaks and rumors of the newest powerhouse chip from Team Red. What is surprising, however, is the exact reason why the company decided to disable overclocking on the Ryzen 7 5800X3D.
Director of technical marketing at AMD, Robert Hallock, said in an interview given to HotHardware,”On the desktop parts, you've seen us ship parts that range up to 1.45V or even 1.5V in boost and that is not the limit for 3D V-Cache. The voltage limit on that is more like 1.3V to 1.35V.”
In other words, Zen 3 processors without 3D V-Cache have a higher voltage range of up to 1.4 V. But it looks like, to ensure stable operation of the Ryzen 7 5800X3D, AMD limited the voltage of the chip to only 1.35 V. And this is not only the only spec reduction in the new chip. Coming in at 3.4 GHz and 4.5 GHz, the Ryzen 7 5800X3D also has a 400 MHz lower base and a 200 MHz lower boost clock than the regular Ryzen 7 5800X which comes in at 3.8 GHz and 4.7 GHz.
According to Tom’s Hardware, some people also suspect that the structural silicon spacers AMD uses to even out the 3D V-Cache layer may trap heat, making the chip hotter. If we accept this hypothesis, the reduction of base and boost clocks along with a lower voltage ceiling begins to make sense. However, a low voltage range is the only official reason given, so everything else is pure conjecture at this point.
Hallock also said that AMD is pushing the Ryzen 7 5800X3D to its limits out-of-the-box. “We are not going to allow CPU frequency overclocking or core voltage adjustment because out-of-the-box the design of the chip already uses ranges up to that voltage and frequency limit. On the other hand, fabric overclocking remains enabled, memory overclocking remains enabled, and we know that our parts get the most benefit from that anyway”, explained Hallock.
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