AMD Ryzen 9 5900X and 5950X review

Processors 199 Page 30 of 31 Published by

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Overclocking and tweaking

Overclocking and tweaking by BIOS

When you plan to overclock the processor, always invest in good hardware. And that includes a proper motherboard, power supply, memory, and of course, cooling. Cheaper motherboards are often not well-tuned or designed in terms of power delivery for enthusiast overclocking. That can translate into a lesser power delivery (phases) design quickly warming up the related components, causing instability. Also, never underestimate the benefits of a quality power supply. When you tweak a processor, depending on what you are trying to achieve, you often need to add voltage to the processor, which creates more heat. Ergo, proper processor cooling is mandatory.

Overclocking with a many-core processor (doesn't matter if that is Intel or AMD) is often more difficult to accomplish. If you overclock by BIOS (which 99% of us do), really, it all comes down to the quality of the BIOS (mobo brand) and merely a few registers you need to fiddle with. Remember that we're going for an all-core overclock, which means a lower clock frequency than the highest Turbo bin offers. What you need to do:

  1. Enable and start at 4200 MHz (42 Multiplier)
  2. Apply 1.40~1.50 to the CPU (or leave it at auto)
  3. Work your way upwards from there until the system becomes unstable and then back down at least 100 MHz.
The new ZEN3 processors have been pushed to the max. We reached an all-core 4700 MHz on both tested processors; some might be able to hit 4800 MHz. 
 

Oc4700

Ryzen 9 5900X scores 9265cb (at defaults that is 8635cb)

65463_oc4700

Ryzen 9 5950X scores 12119cb (at defaults that is 10409cb)

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