AMD Teases Improved Precision Boost Overdrive For Ryzen 3000 CPUs on X570 Motherboards
AMD Explains Precision Boost Overdrive and How it Will Work on Upcoming Ryzen 3000 CPUs Running on X570 Motherboards
AMD recently posted a video to its YouTube channel featuring Technical Marketing Lead Robert Hallock delivering a succinct high level explanation of AMD’s Precision Boost Overdrive automatic overclocking technology along with a teaser of how it will work with imminent Zen 2-based Ryzen 3000 processors running on motherboards with the X570 chipset. While a bit light on details (hopefully more information will be available post-launch), Precision Boost Overdrive is a technology that allows processors to take advantage of headroom in power, thermals, and/or electrical design current by raising frequency and voltage to achieve higher performance up to hitting one of the aforementioned limits. Notably, the overclocking achieved using Precision Boost Overdrive (PBO) happens without disabling Precision Boost 2 and XFR 2 under loaded conditions as well as the power saving modes with smart frequency and voltage management when idle.
Precision Boost Overdrive (introduced with 2nd generation Ryzen 2000 series ThreadRipper) extends the frequency beyond that of Precision Boost 2 + Extended Frequency Range (XFR) 2 with PBO being more aggressive when it comes to how close the processor is allowed to approach the limits in SoC Power (PPT Limit), VRM current (TDC Limit), and temperatures.
Once the processor hits one or more of the limits, it will begin fluctuating the clockspeed by 25MHz and attempt to maintain the boost for as long as possible. With Precision Boost 2 and PB0, there is no longer a hard divider between what a processor is allowed to boost to with one core vs all cores – instead Ryzen 2000 and 3000 processors attempt to boost as many cores as high as possible.
Interestingly, Mr. Hallock teased that with Ryzen 3000 chips on X570, Precision Boost Overdrive may be user-configurable with enthusiasts able to “plug in” (in his example) 200 MHz which would allow a processor that out of the box is rated to boost to 4.55 GHz (Precision Boost 2 / XFR 2) will be able to boost to 4.75 GHz with PBO activated. While he did not go into details on where that 200 Mhz number comes from or how it may be modified, the video does raise some interesting questions and possibilities for easily wringing just a bit extra free performance out of your 7nm Zen 2 processor. While I have to wait for reviews to be sure, based on past showings and expectations (keeping in mind I have not seen any NDA’d tests/info and have not been pre-briefed) AMD is pushing the new processors utilizing TSMC’s 7nm process as far as possible out of the box as far as clockspeeds, and with PBO there may be even less room for manual overclockers (outside of extreme overclocking using liquid nitrogen or chillers) to play with. Although some enthusiasts will surely still opt for the manual route because it is fun and a hobby, bringing more performance (and less headroom) out of the box and one-click Ryzen Master PBO(?) overclocking cutting into the fun of manually dialing in an overclock is a “good problem to have” situation.
What are your thoughts on AMD’s efforts to auto-overclock (processor-based as well as Ryzen Master software) as well as Intel’s response and recent increased push for automated overclocking and higher clockspeeds with Intel Performance Maximizer and the Intel i9900KS respectively. Have you taken advantage of the newer overclocking methods (are the ‘good enough’?) or do you still prefer dialing in a manual all core overclock?
"Taking your feedback seriously is a critical objective for us, as is using the Ryzen CPU's intelligence in new and beneficial ways. We knew we could bring those two goals together with Precision Boost Overdrive! The result is awesome: a new type of overclocking that combines smart boost control, idle power savings, factory max boost clock, and higher nT performance. We hope you enjoy!"