ago. CO allows you to undervolt your cores to achieve less voltage which in turns allows less heat. In conclusion if you’ve been fiddling with PBO and curve optimizer and had a few instabilities so you decided to go back to AUTO They have no plans to develop it for any platform other than Zen3. Low/stock PPT/TDC/EDC limits may prevent the processor from hitting the highest points in the curve. But if i set curve optimizer mode to "all cores", the system becomes unstable, fails prime95 tests and randomly restarts by itself. r/Amd. I used Prime95 Smallest FFT 2 Thread to test each core, and used increments of 5 only. I stopped at -25 since I figured if one of my non-preferred Welcome to /r/AMD — the subreddit for all things AMD; come talk about Ryzen, Radeon, Zen4, RDNA3, EPYC, Threadripper, rumors, reviews, news and more. 5800x actually has the highest all-core boost of the Zen 3 CPUs. Respectfully, In your BIOS set PBO in CPU OC to manual. Operating System & Version: WINDOWS 10 PRO 19042. Like many of you, I have had reboots occurring at random times, after pushing Curve Optimizer volts down. Auto CO makes it producing much more. Having used intel for the last 15 odd years, I’m a bit lost when it comes to the overclocking on AMD but I think I’m about there. Get around 11900-12000 on r23 at 77 degrees No errors or random restarts. This gives you the best single core performance along with slightly better multi-core performance versus stock settings. Other elements of PBO like limits and scalar allow one to lift the power limits of the CPU and adjust the sustained voltage to the cores. This is the ideal method for bursty workloads like games and other light to moderate general tasks because it gets you higher single core performance than you can achieve We would like to show you a description here but the site won’t allow us. 45 V. So yes you lowered the voltage but have same temps, but I bet you have higher frequency and more performance because of it. Undervolting gives a temperature advantage which PBO2 can use to automatically clock higher (my assumption). CO: -20/ -25/ -15/ -25/ -25/ -20/ -25/ -25. Set and forget is leaving it at stock. 050, curve optimizer -29 all core) 6132 *In case anybody doesn't understand why enabling XMP is bad in this scenario - enabling XMP disables most of the power saving features of the SoC, and triples its power consumption from ~5W All 5900x are between 4300mhz and 4500mhz in multicore the maximum I saw 4600mhz with some tweaks with amd curve. Yes all core might be high due to less CPU cores. My power limits are stock. Curve Optimizer is part of PBO but doesn't need to be used. 22. I've been setting up my 5900X in Curve Optimizer for a while, testing the set offset in Core Cycler (with a script from overclock. Go to bios and change to per core. 125 watt eco mode with curve optimizer enabled 2000points more in multicore and 75 points more in single core with temps below 70c. OP • 9 mo. Award. Temperature also impacts the selected voltage - lower temps mean lower voltage used - so it might have to have been idle for a while and cooled off to reach the lowest voltages which may be too low, especially if it jumps to full power at a lower-temp voltage. 0 + Auto OC + Curve Optimizer - 11,658 all core, 656 single core (11,740/661 was attained but had stability issues, see "Curve Optimizer" below) Now my settings: PBO Limits: Motherboard. 6GHz+ all core during Cinebench R23 but it's fairly close. However, decreasing the curve optimizer to -30 decreases the max single core to 5600Hz and max full multi core to 5400Hz. 5% hotter CPU temp. my 7600x runs at -35 all core for month now. 26. Haven't gotten into per-core optimization yet even, just applied -20 to all cores. I'm running 4. I have a Ryzen 7 5800x and a Aorus Gigabyte B450m pro wifi motherboard, Windows 11. 4. 190 BIOS Build Date - 3/17/2022 Is this a possibility to where AMD has locked out adjusting curve optimizer for the 5800X3D? Welcome to /r/AMD — the subreddit for all things AMD; come talk about Ryzen, Radeon, Zen4, RDNA3, EPYC, Threadripper, rumors, reviews, news and more. Single core boost up to 5150mhz, effective 4975mhz, multi core 4450mhz. 8 . 05GHz single and 4. It is like the curve optimizer settings are completely unrelated to the PBO settings even if they are in the same menu. I get 1609/16214 with an 5800X and -5 on better cores up to -30 on the weakest ones. What do your guys 5800X CO settings look like? Looking to see how mine is relative to others. Maximizing Ryzen 5000 Performance With AMD Curve Optimizer [Hot Hardware] Yes. Most cores are performing normally - the best are at -10, others at -20. This is why PBO works so well. To counter this, I have an negative vCore offset to lower things a notch, so temperatures Adds support for Desktops utilizing AMD Ryzen™ 7000 Series Processors with AMD 3D V-cache™ technology. Ryzen 7000 Maximum Curve Optimiser Value. In a simple word, yes. 6. 24 from core 0 thru 11 on my 5900x. It appears your submission lacks the information referenced in Rule 1: r/AMDHelp/wiki/tsform. Heya, i got an old x470 prime pro (which is awesome i must say for the age!) But i have to use PBO2Tuner to set all cores to -30, does anyone know where i can set that? I found the Limits PPT,TDC and EDC. BIOS Version: 4. You have to find the sweet spot for your cpu and not setting the curve to -25 or -30 because every other dude out there is getting crazy results with it. Currently running -500 pbo offset, 85c thermal limit, -32 -31 curve optimizer all cores all but one core on a 7950x with an sff cooler. Share More replies More replies. Hi. Set all core negative 30, if pc doesnt start. curve optimzer: per core, every core set at -30. Single core stayed the same though out stock, 105 and 125 watt Yes it will definitely lower your performance and the key here is to sacrifice only x% performance while saving x% energy. Welcome to /r/AMD — the subreddit for all things AMD; come talk about Ryzen, Radeon, Zen4, RDNA3, EPYC, Threadripper, rumors, reviews, news and more. I can confirm that there is NO CO - Curve optimizer for the 5800X3D. I began with my worst ccd worst cores and climbed to better cores and than better ccd. Everything runs great and no issues, but I can’t seem to find the curve optimizer in the bios. Change to negative 20 and so on. 30 V,7900X: 1. PBO essentially lets your CPU run past rated specs and boost more aggressively to achieve higher performance. May 19, 2023 · Try first a -5 then -10 and lastly a -15 on all core and see how it goes, keep an eye on temps and vCore. But one core seems to require a positive offset (core 1, the second-best CCD0 core after core 0). 4volts the boost 4850mhz and the temperature 60c. Some results using PBO2, Curve Optimizer, and Boost on a B550 with 5950X. This happens even if i spend 32 minutes letting the utility test the settings (which it then claims is fine 5800X at 142W PPT (XMP disabled, curve optimizer -29 all core) 6075 5800X in daily mode 155W PPT (XMP enabled, SoC 1. PBO2 set on auto, so disabled. Curve optimizer- All core negative -20. Set my curve optimizer to -18 -18 -18 -20 -25 -25 +200 on +MHz. We would like to show you a description here but the site won’t allow us. I turned on PBO in the BIOS and auto OC in ryzen master, everything works fine and its stable in prime95. For example, the maximum stable negative offset on 5950x is -12 compared to the -30 on the 5800x and 5900x. The Radeon Subreddit - The best place for discussion about Radeon and AMD products. I’ve been trying to find stable values for my 5900x tuning each core one by one. Reboot is required, even if its done from Windows. Just remember, each step in the Curve represents either 3mV, 4mV, or 5mV (AMD has not been more specific). Setting curve optimizer to -35 decreases the max single core to 5400Hz and max full multi core to 5250Hz. That's a great score. Please update it to make the diagnostic process easier. CASE GameMax Aero ATX with 4 x 140mm fans and 1 x 120mm fan. 2. I’ve also tried 105 watt eco mode with 33000in multi core without curve optimizer and 35000 with curve optimizer. 28. PBO2 negative curve CPU settings are more efficient than stock settings; they improve Cinebench R23 scores while consuming the same or less power. 2093). 7900x, -30 all cores in curve optimizer. Now reduce failed cores by 5. In the end you get an estimate number. 0 SSD -Crucial mx500 1tb SSD. For stability test I’m using OCCT (small data set, normal mode, SSE instruction set, testing single Welcome to /r/AMD — the subreddit for all things AMD; come talk about Ryzen, Radeon, Zen4, RDNA3, EPYC, Threadripper, rumors, reviews, news and more. And of course the result of the 5900x is superior in multicore +4 cores. But i dont wanna set the offset everytime i restart the pc, i bet there is that option in the Bios too. Still trying to figure out a stable 4. Stock boost was 4. Once you get to desktop, run corecycler and take note of the cores that fail. if everything passes the tests, youre good to go. When using Curve Optimizer I noticed that average vCore drops but maximum vCore goes up, because it will boost higher. These are results for 5900X with Curve Optimizer set for negative offset per core (-22 normal cores, -16 2 second best cores, -12 best cores) + 150mhz boost. PBO- Advanced. 11. A new feature called as Curve Optimizer is introduced in the latest Ryzen Master release (Build # 2. MembersOnline. For brief background tasks or destiny the working thread is something like 20%-50% so that eff clock can't be a measure of clocking stretching. Discussion. Your post will not be removed. Description of Original Problem: I just upgraded to a new ryzen 5000 CPU and updated my b450m-HDV board to bios version 4. The only things I changed the rest are still in stock. 55GHz all core. So since you reduced the voltage, you have the 5800x more headroom to boost even higher. Archived post. So you could find the optimal, stable CO settings for your processor, but if you then adjusted PPT/TDC/EDC they could then become unstable. Mar 20, 2022 · Yes, it's perfectly safe - some people find their top one or two cores actually require a positive value in Curve Optimiser. skid00skid00. Reply reply. The results so far have been pretty good: R23 - 16015mc 1668 sc. eg: in 5600x cores are numbered from 0 to 5 (total of 6). 35 V,7700X: 1. pbo scalar on auto and no extra boost mhz. net, set to detect CO errors). In games that are more multi-threaded, eco mode can reduce the all-core boost clocks and that would reduce performance a little compared to regular, non-eco mode. 20. What is the reason to set a lower negative offset in Curve Optimizer for the best core. Default TDP of R9 7950x is 170W. I had resorted to settings of 16 on my CCX0 most-used cores, 20 on the others, and 19-25 in CCX1. Goes like this in bios, AMD Overclocking, Precision Boost 2, then it has a single selector with 4 options, select Advanced to bring up the menu with power limits and boost and Curve optimizer. AutoOC allows the core to boost higher. Cinebench was stable through the entire Jan 30, 2021 · How To Squeeze Every Bit Of Performance Out Of An AMD Ryzen 5000 Series Processor. /r/AMD is community run and does not represent AMD in any capacity unless specified. I recently upgraded to the new CPU and have been using it for a couple weeks. It might be due to how HWiNFO updates, but your effective clocks in the first screenshot seems rather low during y-cruncher (~220MHz lower than actual clock speed, avg of CCD0 and 1). Try OCCT with small data set and 1 thread. 35v soc voltage - manual: 1. I've been using AATU to limit the CPU temp to 90C, which has been great since before it would go right up to 95-99 when gaming. 25. Enhancement to the Curve Optimizer feature - range extended from -30 to -50 Minimum System Configuration. The objective was to increase my idle voltage just a smidge to avoid low load failure, while eeking out a slightly higher boost at similar voltages and temps. Used ryzen master curve optimizer and my PC keeps crashing. I have a B550 Taichi and can confirm new BIOS update enabled the PBO2 and currently in use as we speak. A signifiant factor is the quality control, detail of precision manufacturing and optimization. The 5950x is a highly optimized processor with higher levels of precision and quality control, for which you a pay a premium. I've a 5800x3d and ASrock A520m-ITXac with updated AM4 AGESA PI 1. Windows 10 May 2019 Update (or newer). Dialing in PBO + frequency override + curve optimizer. If i'm testing let's say core 1 with -14 and passed my stability test I would add 2 steps, meaning -16 and Negative co values let the CPU keep the same speeds or boost higher using less voltage and therefore less heat, It appears your submission lacks the information referenced in Rule 1: r/AMDHelp/wiki/tsform. Gdday, Since day 1 of getting my 7700x, I've always ran a curve offset of -30 as I was told that this was the maximum value. X570 tuf 3001 bios. 75GHz all core. This means you aren't guaranteed to still hit the higher frequencies, so it's going to cut performance unless you were thermally limited. Max cpu boost override- 50mhz. Then stability test etc etc. CPU- 5800x. 3d mark CPU profile - 1006 1 core (all mc scores increased too) Cpuz - 6986mc 673sc. • 3 yr. 0% gain in multi-core performance realized with optimized settings (PBO2+Curve+Boost) 12. . I wonder if CB isn't loading the CPU as hard, and allow higher effective clocks (=higher score). Using droopier LLC settings also affects voltage, but drops voltage PBO and CO aren’t reliant on each other as in you don’t need CO on when using PBO. Curve optimizer really helped get those numbers up, now does 5. However, I decided to put it at -50 when I saw a few comments saying that people could push it past -30 and other posts saying -30 is the max. CO offsets the voltage on a curve providing less UV under multicore workloads and more under single core Ryzen 9 5900x curve optimizer undervolting. Freely discuss news and rumors about Radeon Vega, Polaris, and GCN, as well as AMD Ryzen, FX/Bulldozer, Phenom, and more. 7900x Curve Optimizer per Core. 1. FurryBrony98. Curve Optimizer cannot be change in-flight, at least for now. Why would a more conservative undervolt for the best core be better even for single core Setting manually 130A limit for CPU EDC noticeably improved my performance. Seems good. Cause with negative Curve your chip will have more room So far PBO and Curve Optimizer have been amazing. Most other low priority cores on daily gaming had peak speeds below 4100mhz after 5 hour session. 21. The curve optimizer should appear under PBO if I remember correctly. 9. RAM: 32GB 3200hz. There is no curve optimiser but there is a decent utility called 'Clock Tuner', made by the same guy that makes the Ryzen Ram timings calculator, which can be used to undervolt/overclock your cpu. Only Zen 3 processors (on Motherboard: Asrock B450M-HDV. To test stability I ran prime95, cinebench and OCCT multiple times, played GTA V, elite dangerous and some emulators since they are very CPU bound and no WHEA errors, crashes or BSODs whatsoever. PBO Scalar: 3x. My System: MOBO TUF X670e Plus (non-wifi) with latest bios. Cpu power in prime95 blend usually hovers close to 100w @ 85c. Been using bios for tuning everything. No idea but I just do it manually in bios after doing the upgrade myself. Scenario 1: +200mhz, PBO limits motherboard, CO -7 (not stable any higher than that), offset -0,0625mV. The curve optimizer settings stay in place but the PBO limits get set back to default values. It usually finds errors pretty fast. I used the PBO2 curve optimizer to adjust the all-core CPU to -15 and the iGPU/GFX to -10. Curve Optimizer in my understanding is just undervolting. cpu load line cal: 1 step above auto if you look at the max voltages for ryzen 7 it´s easy to see why the lower end models have more CO headroom: (unless you lose the silikon lottery) 7950X: 1. Feb 19, 2023 · OP's situation is different since Curve Optimizer is tweaking the actual V/f curve used to govern the processor's boosting algorithm, which can be on a per-core basis. I’ve gotten these numbers using Cinebench r24 and observing with hwinfo64. No WHEA's. ie from 20 to 15 and run core cycler again. the answer would be yes. The cpu will automatically boost as long as thermals allow. cpu voltage - manual: 1. 85 on all cores cooler than stock settings. With PBO2 enabled got 23000-23100 pts multi, but a little bit worse SC boost. No don't use affinity, you could be perfectly stable with the core you've set affinity to and crash to some other idle core. For many years i used Intel platform and its my first time with AMD/Zen I got Ryzen 5 7600 and i went to Ryzen Master, Curve Optimizer, Control Mode Default, i went to Cruve Optimizer Control and click Optimize All Cores and my system tests all Cores for 40 minutes and determine lowest Vaue of -60 OC so i save apply it my PC restart but in home 7959X3D Curve Optimiser. I wanted to try the curve optimizer to see if I could lower things a little further. The eff freq can work with 4975, 5000, 5025 steps with r23 avx 100% thread workload for finding clocking stretching. If you want to try an alternative, disable eco mode and try setting the following values in the advanced PBO settings: PPT = 125 TDC = 80 EDC = 120. Reply. I'm currently running negative offsets of: 22. PBO2 has a curve optimizer for both the CPU and the iGPU/GFX. I recently seen one of the videos on YT stating I'll start with my sustainable scores: Cinebench R20 PBO 1. I’m wanting to adjust the curve to help with the thermals. AMD curve optimizer too good to be true. to squeeze the most performance you'll need to use per core settings in curve optimizer, as in all ryzen cpus not every core is made equally. ChillyCheese. Arctic Liquid Freezer ii 420mm on the way, will start maybe pushing things some more once installed. Also your cpu is using only the 1 or 2 best cores for the main tasks. Overclocking a CPU used to be a pretty simple process: change a bus speed or a multiplier, set an appropriate Indeed, it can often be more flaky at idle than at the high-end because the voltages and temperatures fluctuate more. Process used to identify optimized settings: We would like to show you a description here but the site won’t allow us. If you do use positive values and a high Scalar value, make sure you have very good cooling. Cinebench R20 PB0 2. Conclusions for this system: PBO2 settings are not linear, there is a sweetspot you need to determine empirically. Before in games the voltage was always above 1. maybe for your cpu core 3 and 4 are the best while core 2 and 1 are the worst. I decided to use Ryzen Master to use to auto optimize for the CPU. 40 V,7600X: 1. I´m also using CTR Hybrid OC and PBO +150MHz. (i can set up to -50 in the gigabyte bios) Reply. You can still use master to find your best two cores and then try CO -30, with -20 or something like that for the best two cores in bios. Settings ( I think matter ): pbo manual: 138 - 95 - 120. 24. I’ve just installed my 7950X3D, got a clean copy of windows and purposely not engaged any of the driver level affinity software as I figured I would want it left alone while clocking. Voltage offset removes a flat amount of voltage at all points of the frequency curve - but without actually affecting the curve. so you'll have to adjust the offset based on that data. 0 + Auto OC enabled - 11,490 all core, 610 single-core. Then if you select CO and enable EITHER all core or per core and change the values, THEN you go back and change the PBO2 selector to disabled, everything We would like to show you a description here but the site won’t allow us. vCore is the value to look for. I used the preset "Performance," then in the CLOCK CONTROL tab, I checked "All Core" and set it to -10, and clicked Apply Settings. Build details: -R9 5950x (PBO+ CO, ~4,6ghz all core and 5,1ghz on some single threaded workloads) -B550-A pro by Msi -Crucial ballistix 32GB DDR4 3600mhz cl16 -Radeon Rx 6900xt (stock from AMD) -Noctua NH-D15 -Sharkoon silentstorm Icewind black 750w psu -Adata xpg gammix s70 Blade 512GB pci-e 4. 0. My computer setup is below: Motherboard - MSI MPG B550 Plus CPU - AMD 5800X3D GPU - Nvidia 3080 CPU Cooler - Liam Li Galahad 360 AIO BIOS Version - E7C56AMS. 2. PBO power values are at default as well. 75GHz single and 4. Ram at 4000/2000fclk 16-16-16-16-30-46. Subscribe to never miss Radeon and AMD news. HerrSPAM. Users will be able to enable Curve Optimizer through the BIOS initially, with plans to introduce it to AMD’s Ryzen Master software toolkit for Windows sometimes in the new year. It's easier to first find a stable all core curve optimizer and then go from there, i started from -10 all core. AMD Ryzen Threadripper or AMD Ryzen processor on a motherboard that supports overclocking. Hello All, TLDR: My 7900x is stable (at least from 24 hours of torture testing and ovber 48 hours of normal usage) with a -30 Offset per Core. 5800x3D Curve Optimizer. PPT: 120 TDC: 75 EDC: 110. 27. PBO limit is set to +50MHz, Curves to -30 for all cores, full details in linked album above. New comments cannot be posted and votes cannot be cast. The primary functionality of this feature is to tune the AVFS curve of the entire CPU or specific cores of the CPU such that the tuning overrides the fixed curves that they are fused with, resulting in an 5800X Curve Optimizer Settings. wd sb io im zd bm yh uu em fy