I have a 3900x and have enabled PBO, XMP in the bios and use Ryzen high performance power setting within Windows, but not much more than that. We tested the R5 3600 and the R9 3900X in the Gigabyte X570 Aorus Master and the MSI X570 Godlike motherboards, and we ran them with PBO disabled, PBO enabled (auto), and PBO maxed with a +200MHz AutoOC offset (includes maxing thermal throttle limit and PBO scalar menu options). For this motherboard Scalar 1 ~ 7 used a save voltage Custom Precision Boost Overdrive Scalar: Scalar multiplier use a value of 7 or less. CPU Cooler: Noctua NH-D15. The worst result for the 3900X in F1 2018 was with the air cooler and PBO/AutoOC enabled; the best result was with a CLC and PBO turned off. The Overclock Mode is set to Auto in the bios. Try to reboot the machine, but beware that the RAM might not come up on the first try. I used the AMD Ryzen Master Utility in Creator mode to apply PBO. We’ll quote directly from AMD’s review documentation so that there is no room for confusion: Package Power Tracking (“PPT”): The PPT threshold is the allowed socket power consumption permitted across the voltage rails supplying the socket. From AMD: “this feature will not guarantee the higher boost clock on any number of cores. I also turned off Precision Boost Override and Core performance boost but the EDC (CPU) was still 90% I reinstalled windows twice with fresh new drivers but still have high EDC (CPU) no matter what power plan I chose. It’s hard to get results this unchanging when we actually want them. Ryzen Master provides you on pointers as to how you can revert back to basics. No mather what you say, 1.450V is just to damn high for a OC on any CPU. I saved the settings in a profile and applied it. AMD’s CPU clock scaling algorithm, Precision Boost 2 was introduced with the 2nd Gen Ryzen processors and an additional feature, Precision Boost Overdrive was introduced with present Gen Ryzen 3000 chips. Updates to Precision Boost Overdrive Override for the AMD Ryzen 3000 Series can give an addition 200Mhz added to what is printed on the box. In general, we compare the reported VID from HWiNFO to the CPU Core reported in the UEFI and make the best guess on what the appropriate UEFI value should be. After making some changes, it's time to relaunch our monitoring software, log the metrics , and execute our application. Not all BIOSes are created equal, and manufacturers like to put their spin on some of the options (we're looking at you, Asus). On the MSI Godlike, the limits were: 1000W, 490A, and 630A. Aktiviert wird die Funktion über das BIOS oder die Ryzen-Master-Software. Precision Boost Overdrive Scalar: Increase the maximum boost voltage and time when using that particular boost value. I have ryzen power plan enabled and decided to chose the balanced power plan but the problem still persisted. Browse your motherboard’s support page and read the release notes. Most DDR4 kits sold these days come with an eXtreme Memory Profile (XMP), and our first step is to enable that free performance. We’ve scored better with this chip and board with PBO disabled, and still there’s only a 1.2% improvement 1t and a 2.2% improvement nt, but if any pass of any test is going to show a difference in frequency, this is it. Performance overclocks, on the other hand, cover a range of applications but might not be safe for all workloads. To maintain consistency, we tend to stick with manual controls where possible so we can specify the exact voltage we want to set. After every restart i have to go into the software and enable the profile again. The test with the CLC and PBO disabled may have been marginally better than with the air cooler, but a 1.2% reduction in turn time isn’t concrete. We can't trust all numbers thrown out on the internet because sometimes "1.35V" has no qualifiers, and we can't just throw that into our UEFI and expect things to work as intended. Also note that there are separate default PB limits for 105W and 65W TDP processors. I'm actually using Ryzen Master to OC since the bios doesn't have any settings for me. So instead of limiting a processor to 110 amps of current draw, for example, our motherboard now enables the regulators to provide 250 amps of current while maintaining other operating conditions. I have it that way because during gaming it would never boost to 4.2ghz. “Precision Boost” is not an abbreviation for “Precision Boost Overdrive,” it’s actually a different thing: Precision Boost is like XFR, AMD’s Extended Frequency Range boosting table for boosting a limited number of cores when possible. If the boot or test fails, proceed back to the BIOS and either select a different data rate and increase the DRAM timings, or both. Tom's Hardware is part of Future US Inc, an international media group and leading digital publisher. I have it that way because during gaming it would never boost to 4.2ghz. Ryzen Master将其和单纯的PBO做了模式区分,只要修改了Boost Clock Override选项则归类为Auto OC模式,算是代表AMD官方对两者区分的态度.但在ASUS主板的BIOS设置界面中,Auto OC所调整的Boost Override选项是被归于Precision Boost Override的选单之中. […] On the Godlike board we saw a 3.5% increase from PBO disabled to PBO maxed with AutoOC. In the past, CPUs have been fairly forgiving, and as long as nothing hit TjMax, stock performance would be about the same. Simply setting PBO to “enabled” scored 3748/485, and setting PBO to motherboard limits (functionally the same as max), maxing throttle temp and PBO scalar, and applying the AutoOC 200MHz offset scored 3765/496. Sent from my ONEPLUS A6003 using Tapatalk . There’s been a lot of confusion regarding these two boosting algorithms and the addition of AutoOC (often found in the same BIOS section as Precision Boost) makes the whole affair … No matter what you read here, go and enable XMP for your memory :D BAM 10% free performance right there. The performance boost in other applications could very well make up for ... One of the Ryzen Master tabs that let you tweak CPU and memory overclock settings. Today, we’re demystifying these names and demonstrating the basic behaviors of each solution as tested on two motherboards. Of course, we are just scratching the surface, and many other factors account for voltage and power draw. If your system isn’t stable after you turn up the clock speed, the CPU just might not be getting enough voltage to operate at that speed. Ryzen Master is useful for monitoring but not necessary. We went ahead and created a flow chart to help guide you through the journey. I have a 3900x and have enabled PBO, XMP in the bios and use Ryzen high performance power setting within Windows, but not much more than that. The 200MHz offset that’s mentioned in conjunction with PBO is called AutoOC. I would say not a chance getting all core 4500Mhz on any Ryzen chip unless liquid nitrogen.I am going to try to use Boost override to try to hit 4600Mhz on one core.That will not likely happen.I am going to try anyway. And don’t forget to budget for a solid power supply from a reliable vendor. There will be some delay after submitting a comment. Adjust FCLK to match your RAM XMP frequency (3200 RAM = 1600 FCLK). But unlike traditional overclocking, Precision Boost Overdrive preserves all the automated intelligence built into a smart CPU like Ryzen: Precision Boost 2 remains enabled for on-demand … As expected, engaging the feature boosts the Ryzen 9 … Try to Google Ryzen 3000 high temps and see how many people how are having trouble with temps because of high Vcore The multithreaded amperage actually spiked to 14.8A at the beginning and dropped as low as 13.9A during the (fairly brief) run, which was corroborated by HWiNFO’s power numbers. There are three basic genres of overclocks: competitive, performance, and daily-driver. Applications with high thread counts, and/or “heavy” threads, can encounter PPT limits that can be alleviated with a raised PPT limit. The only real pain is that I have to set the OC profile in Ryzen Master … In some cases, these types of overclocks lead to higher overall all-core performance over more extended periods, but come at the cost of bypassing power-saving features inherent to Ryzen processors. The improvement from PBO off to PBO/AutoOC on with the 3900X and a CLC on the MSI board was a whopping 2.4%, and 1.5% on air. We found that manually maxing the PBO variables and allowing the motherboard to set them accomplished functionally the same thing, so for “max” tests we used the motherboard values. As such, make sure to pick a processor that will provide enough overclocked performance, a motherboard that has the capability to overclock as desired, and a thermal solution that can handle the increased thermal load better than the stock cooler. AMD’s Precision Boost Overdrive (PBO) introduced one-click hassle-free overclocking to the masses for the Ryzen lineup of processors. It sounds like motherboard manufacturers are free to set higher numbers based on what they expect their own boards and VRM to be capable of, although some of the motherboard makers we spoke to are under the impression that AMD provides these numbers, which is another issue entirely. I used the AMD Ryzen Master Utility in Creator mode to apply PBO. All of the 3900X results were gathered on the Gigabyte board. Ok in ryzen master i enabled the precision boost overdrive and it is giving me 4.4ghz on single cores so a little bit of an increase but again when its got all 16 cores at 100% im stuck at 3974mhz, i think maybe its meant to be that way, im sure i remember reading about how single cores can be boosted much higher than all 8. With PBO disabled the limits were PPT 142W, TDC 95A, and EDC 140A on both boards, which is correct AMD spec for 105W TDP processors. Even amongst CPUs of the same model, made at the same time at the same factory, there are subtle differences in how much additional voltage and frequency the chips can leverage. The lowest single-threaded score we saw was with PBO and AutoOC on the Aorus board--and this is where our next big hurdle started to become visible. AMD showed a 21 point increase for 1t performance in this test, we showed a 12 point increase; we can’t tell you a percent difference for AMD’s numbers because they omitted a vertical axis on their marketing charts, attempting to render them as useless as possible. We failed to find a single game where enabling PBO and AutoOC made a significant difference, and PBO + AutoOC is intended to improve gaming performance. Before you change any settings, it’s important to know how your processor and motherboard work out of the box. The reason we emphasize "good" is that sometimes manufacturers release software that isn't stable or locks features out. Get instant access to breaking news, in-depth reviews and helpful tips. OC mode-From default to Auto Overclocking Boost override CPU -From 0Mhz to 300Mhz PPT-142w to 1000W TCD-95A to 114A EDC-140A to 180A Scaler -0X to 10X More often than not, the latest version is typically the one to get. It seems the Ryzen Master software has hard limits for PPT, TDC, and EDC. We started HWiNFO64 logging, put a current clamp around the CPU 8-pin power connectors, and ran Cinebench R20, first multithreaded and then single threaded (in the same log file). They just love extra clock speed.” We could test more combinations of boards and chips, but it just isn’t happening without completely changing the definition of PBO. We have a table from AMD that helps illustrate the intended use. In the bios It set PBO to: PBO - Advanced, PBO Limit - Motherboard, Precision Boot Overdrive Scaler - Auto, Max CPU Boost Clock Override - 0 Mhz, Platform Thermal Throttle Limit - Auto, PPT, TDC and EDC to 0. We have liquid nitrogen on hand, so it was easy for us to just dump some of it onto a 3900X and see what it would do under absolutely ideal conditions, stock or with PBO. This means that the advantages PBO offers are subjective depending on the motherboard model, the processor model, the SPECIFIC processor, the cooling solution, the temperature of the room, and the alignment of the planets. Of course, users (and manufacturers) can modify these settings to extreme levels, and without proper knowledge and implementation, this can significantly impact the overall result. There was a problem. The benefit for this approach is ‘What You See is What You Get,’ and deviations from expected results are typically due to the thermal, voltage, or current limitations of the processor or motherboard. Ran OCCT; then manually set Max CPU Boost Clock Override to 200 Mhz in the bios, ran OCCT; set PBO back to Auto in … If XMP doesn’t quite satisfy the overclocking itch, with Ryzen 3000 processors, users can manipulate the fabric clock (FCLK). Kool64 Master Guru. It is good. For once the results somehow lined-up in a sane and reasonable fashion, with the two PBO/AutoOC enabled tests at the top and the two stock tests at the bottom, with the best result from a CLC and the worst result from an air cooler. In CPU-Z Multi-Thread, which tests the multi-core performance, setting “Precision Boost Overdrive” on for the AMD Ryzen 7 3700X seemed to offer a tiny performance improvement, compared to both running the CPU at stock settings (0.84% better), and turning on AutoOC (0.77% better). But if you’re using an older-gen Ryzen processor, check the update notes, because some newer BIOS versions lock out older processors. System cooling policy - passive (Ryzen Master had set this to active) Maximum processor state - 100% Click apply at the bottom right of the window and You're welcome I am back to normal now. If the system boots, run a Memtest-style test (I use AIDA64's memory stress test, but there are many options) and run it as long as necessary. What PBO does not ever do is boost the frequency beyond the advertised CPU clocks, which is a major point that people have confused. Achieve higher clock speeds from your AMD Ryzen CPU. Here’s the thing: In our testing, none of this helps. We didn’t bother running more synthetics than Cinebench for this content piece because PBO is supposed to be primarily beneficial to gaming and because the run-to-run variance with Precision Boost was starting to drive us insane; we demonstrated why in our livestream, but will work on another content piece separately to drive it home. Temperatures are a bit less controversial, and by default, the Ryzen 1000 and 2000 series like to run around 67C. Use the BIOS. Generally, even 3900X has a correspondingly low base setting(90A EDC - equal to 60A on 3700X). Motherboard manufacturers could triple PBO limits tomorrow (if they’re even the ones that control those numbers) and it wouldn’t make a difference based on what we’ve seen. We ran a mix of Cinebench R15, Cinebench R20, and 1080p game tests. And, if you break your CPU by overclocking, it will not be covered by warranty. Actually you want to consider activating PBO ECO-Mode which will limit PPT to 60W. In the bios It set PBO to: PBO - Advanced, PBO Limit - Motherboard, Precision Boot Overdrive Scaler - Auto, Max CPU Boost Clock Override - 0 Mhz, Platform Thermal Throttle Limit - Auto, PPT, TDC and EDC to 0. I have ryzen power plan enabled and decided to chose the balanced power plan but the problem still persisted. Best all core over clock one could hope for on Ryzen … This is the CPU that took more than 1.4V to complete our tests at 4.3GHz all-core when then 3900X could manage the same at 1.35V; it’s also the model of CPU that AMD showed gaining the most points in single-threaded performance with PBO+AutoOC. Generally, even 3900X has a correspondingly low base setting(90A EDC - equal to 60A on 3700X). DigDeep, Jul 1, 2019 #25. When the PC leaves sleep these boost settings change to stock. For us, a general safe limit is 1.2V and the average overclocker should not deviate from the specification. There’s been a lot of confusion regarding these two boosting algorithms and the addition of AutoOC (often found in the same BIOS section as … gerardfraser, Apr 5, 2020 #2. Nevertheless, it’s a completely viable alternative if you don’t want to do BIOS overclocking. AMD doesn’t guarantee AutoOC will actually increase clocks and PBO’s effect is inconsistent at best. CPU-What is printer on the box. AVX-based tasks include Prime95, Blender, x264/x265 encoding, various security protocols and scientific workloads. I wish they would do a deep dive into PBO and the clock offsets. The voltage does fluctuate quite a bit as to be expected, a bit more than I'd like, +/- 0.025v, but as it's currently over half an hour AIDA64 stressing cache (and counting, see screenshot below), it's stable. Long time TH reader, first time commenter. AMD: Ryzen Master AMD CPUs’ steps are very much the same as Intel chips, but the software is different. With 3600 stock cooler: Leave PBO deactivated, your CPU will run too hot anyway. Reactions: Chimpee. If you turn up the VCORE, the voltage going to the processor, it may have enough power to deliver those extra MHz. The Ryzen 9 3900X has a max listed boost clock of 4.6GHz. I saved the settings in a profile and applied it. An overclock is only as good as its stability, and for that, we need to talk about testing. I would like to boost the 4.4ghz to something like 4.6ghz. The daily driver overclocks are typically the most conservative of tweaks that aim for 100% uptime within specific “safe” operating parameters. Precision Boost OVERDRIVE is what AMD is calling it when those three thresholds are bumped up. PBO sounds good. Allowing users to circumvent some of the touchy GPU-esque clock behaviors that are creeping into CPUs is great, especially for users who have the VRM and cooling solutions to handle speeds and voltages beyond AMD’s spec. Ryzen 9 3950X -4700 Max Boost Ryzen 9 3900X -4600 Max Boost Ryzen 7 3800X -4500 Max Boost Ryzen 7 3700X -4400 Max Boost Ryzen 5 3600X -4400 Max Boost Ryzen 5 … Our CPU review results are from an ideal scenario, showing the baseline maximum performance, and users who aren’t using a 280mm CLC on an open-air bench may not be able to match our performance. 1.375v in bios which is 1.368-1.37v in CPU-Z. During the multithreaded load at the beginning PBO and AutoOC maintains a 50MHz advantage, but during the single threaded test any difference is imperceptible, although the higher result with PBO and AutoOC on indicates there must be some delta. The former is more of a manual process that provides potentially more reward while the latter is more fool-proof.