Does curve optimizer increase temps Well yeah now I use a curve of -30 all core and 114 75 115 PBO2 settings for benchmarking and 122 82 124 and a custom voltage curve for gaming, the performance and critically the temps are much better than those at stock settings. I can’t get PBO to make any change on the performance of my 7900. CO does reduce voltage, but with the intent to increase maximum frequency, so the temps dont improve. 7-4. I wouldn’t trade stability for like 2fps and a slightly higher multi core score at marginally lower temps. Enable Curve Optimizer: Jul 21, 2022 · And that affects how Curve Optimizer is working: because it is temp seeking I don't think it exactly results in lower temperature operation even though it does lower voltage at the high end of the V-F curve. Apologies if this is a dumb question, I’m pretty new to this, but I did a ton of testing to find stable PPT/TDC/EDC values that lowered my Ryzen 7 5800x temps while not affecting performance in any substantial way. Cinebench 4650mhz 1. which is incredible, for anyone wondering what this is it actually a gfx (clock override) co kinda like your booster override for cpu. Curve optimizer- All core negative -20 Max cpu boost override- 50mhz Before in games the voltage was always above 1. . Reducing it gets temps in control. com)) and was very confident that I had learned about the somewhat unusual test of forcing "Windows 10 Automatic Repair and Diagnosis" for ten times. With -30 on all cores I get a CB23 score of 15647, an all-core clock of 4620 and an upper temperature of 84°C. Curve Optimizer = Negative, 30 (Not sure what the limit is, max is ideal I think) Max CPU Boost Clock Override = 100Mhz. I read the guide from katalysis (Guide: Zen 3 Overclocking using Curve Optimizer (PBO 2. 6, but all core load would drop to 4. Feb 20, 2025 · Hello. Why? It doesn't increase any performance for me, I never saw an undervolt increase performance, but it increased instability. this will noticeably increase your performance while trying to undervolt/ use curve optimizer for actually optimize your system I just use -30 Curve Optimizer all core on my 5600x which gives free all core stable boost to 4650 and lower temps. I have tried in ryzen master, as well as the BIOS, during r23 multicore, it seems to pull between 220 and 230w according to Core Temp, and boost between 5. After I had been working with the Curve Optimizer for some time. Cooler: Dark Rock Pro 4 - fan curve set to Standard Case: Pure Base 500 FX MB: Asrock X670E Steel Legend Results: CO disabled: 17473 points, max. So I thought what about if I keep power limits on "Auto" but set a PBO Temp limit. So yeah, definitely take your time to do curve optimizer even if you have PBO turned off, the temps will be about the same but the clocks will be higher. 2+ instead. For example, at -30 Curve Optimizer, the voltage required for 4. This is still a bit shy from the advertised 631 SC, so I decided to decrease the curve optimizer in increments of 5 until Cinebench crashes, and then increase it by 5. Wont bother even with a decent medium AIO Dec 13, 2023 · Curve Optimizer is a more elegant undervolt but changes the the "curve", this results in better performance as long as there is headroom to boost. Does curve optimizer alone only lower temps/power draw? Yeah but that can result in better performance. 4, boost clocks: 5 GHZ PBO2 has a curve optimizer for both the CPU and the iGPU/GFX. PBO2 negative curve CPU settings are more efficient than stock settings; they improve Cinebench R23 scores while consuming the same or less power. You cant go lower than 30 but you can try to increase max frequency with autooc while keeping the CO settings, and also you can apply manual voltage offset to further decrease temps,you can also tinker with pbo limits to find an optimal setting for your pc I'm new to AMD and am trying to "finetune" my 5600x. In which case it can lower maximum peak voltage. I actually run an offset, the voltage by default on Asus boards gives the 5900x too much. The thing is if I set the power limits to "Auto" I get R23 score of 29840 but with temp at 91. . If I set 8 different numbers to the 8 cores, all are working with same temperature and voltage (shown in HWINFO64). If I set curve optimizer to -30 and increase clock by +100mhz I can get about 5% better scores. The thing is, you've already pushed almost all your Nov 26, 2024 · Solution: Curve Optimizer Adjustment. I shared the official info from AMD with you, it doesn't get more official than that. As you see the curve optimizer really adds little to the gain for the same temps: PBO2 enabled with 175-125-160, Curve Optimizer at -15 all cores, and 25 MHz of boost vs PBO2 enabled with 175-125-160 with Curve Optimizer DISABLED When you enable pbo the algorithm will boost until you hit different thresholds like the temp threshold at 90C. I don't want to go too much over 80C, if I turn unstable I want to add one increment of core voltage(+0. 0) : Amd (reddit. Set PBO to manual and thermal target to 85C-83C-80C and curve optimizer to -20, -30, -40 and temps didn't change at all (though the clock speeds did increase and I've gained a lot of performance, but it still won't settle down when idling, it's like the CPU thinks it's gaming 100% of the time and I can't find a setting to tell it to chill the 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. There is 3 things I look at, GFLOps results, temperature and do I reach and sustain my target clock. but with the new one, the temperature doesn't drop at all. Curve optimizer allows you to undervolt your CPU. When I used Curve Optimizer on the old one, power consumption was as low as 45w. 4volts the boost 4850mhz and the temperature 60c. AutoOC is the same as Boost Override and it was in the original PBO, now in PBO2. Sep 6, 2024 · Curve Optimizer’s impact is much more homogenous across the curve while lowering the temperature is much more impactful at the upper end of the curve than at the lower end. Jul 26, 2022 · Raising voltage acts uniformly across the V/F curve and gives a bit more margin at the high end to further reduce curve optimizer offsets. So a fair comparison is using the same trio there of 175-125-160. Vcore offset moves the entire curve up / down. 2 days ago · Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community. temperature (c): 88. It will lower your performance but temperatures won't exceed it. It’s probably not stretching it’s probably just not boosting to 5GHz under higher sustained load. Nov 10, 2024 · if you want to try undervolting, just do a -15 or -20 curve optimizer settings and leave everything else to default. Oct 6, 2024 · Any additional improvements to temp should be achieved by adjusting Curve Optimizer, as it is pretty much down to individual samples no one can tell you when you can encounter errors. test to make sure this is stable, then you will see a small reduction in temperature and more stable clocks. It does this to get a handle on what the performance potential is of each core, as well as its power efficiency. All this effectively runs the cpu extremely cool while running at 5 This allows the cores to run cooler with less power input, which ironically gives them more thermal headroom to boost higher with lower temps. I used the same set of workloads for each sample run, and no other variables were changed between runs. Curve optimiser is very hard to get stable at idle without per core tuning which takes ages and most chips except the 5800x3D won’t be stable or have any meaningful improvement. It should, however, be able to perform better because it stay boosted to a higher clock longer, before reaching that temperature. 0, using curve optimizer does not seem to be changing my power draw at all. I’m stuck at about 80% of the benchmarks I’m reading with temps below 48 C always. Normally people don't use vCore offset with Curve Optimizer, but I find it handy since I'm running a 240 AIO on a 7950X. After this you may test single core stability using Corecycler . 3, no matter if I put the negative offset 5, 10, or 15. At least through my testing I wasn’t getting occasional audio crackling and quick freezing after finally deciding to leave the curve at its default. My multi core score is now close to PBO with much better temps and my single core is better. 055V to 0. You will see a number of things appear here, like the priority order of your cores as well as a boost tester. It will always try to maximize power and temp limit if all other limits are respected, like EDC for example or the max boost speed. You don't lower power consumption using Curve Optimizer, you increase performance at the same power. Undervolting means that you’re pushing slightly less voltage, which consumes less power and generates less heat. Think of it as similar to using MSI Afterburner to fine tune the volt/frequency efficiency curve of the GPU. Now I'd love to get temps down even lower if possible. Dont think its worth the higher clock/temps ratio for that extra 200mhz boost which leds to 5% maximum perfomance at best. I am suspicious, will this configuration be safe? Too good to be true. Dec 19, 2024 · Solution: Curve Optimizer Adjustment. This, combined with Precision Boost Overdrive 2 means that you’re pushing less heat, allowing the CPU to boost clock speeds. 31volts. 0 ghz. So I set the temp limit to 85c and scored R23 of 29523 multicore and temp at 85c (obviously). Ryzen Curve Optimizer does not overclock your CPU beyond its rated specifications, and it does not void your warranty. For none game, single thread high freq core would be around 5. Finally, the EXPO (But I would do this before Curve GN is not infallible. I have the 9800X3D on the Strix B650E-E with BIOS 3201. No curve is changed. HWINFO (to get the preferred core order and, optionally, compare before and after temps/power) Core Cycler (which contains PBO2Tuner – set and test curve optimizer values) CPU and gaming benchmarks (compare before and after performance, test for real-world stability) 2. Basically with the same Cinebench R23 stress test my 9900K would go to a peak temp of 76℃ and avg temp of 66℃ with a 5GHz all core overclock and CPU Power Package around 2 Mar 24, 2021 · Temperature: 75. Looking to buy a 7800x3d paired with the ASRock A620M-HDV/M. 97V). Are you sure you are stable with - 30 all core, what tests and for how long did you do to determine it? its giving me a +120 multi core bench mark score. Power consumption always appears to be 65w. 8 so it sounds ok. Here's what I did: Step-by-Step Guide: Open Ryzen Master: If you prefer BIOS, go to the BIOS settings and find the "Curve Optimizer" option under advanced CPU settings. 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 think I have a good chip in that I have curve optimizer at -20, -25, -30 (2 cores each) with manual pbo limit at stock (except PPT at 105w) and has been stable in everything I've thrown at it (and sits idle a lot with no crashes). In the end. I need to lower temps. Jun 10, 2021 · I saw people on reddit praising curve optimizer saying it increases performance and how great it is. I would suggest using Prime95 (small FFT) for stability as well. Thoughts on this tune: In my tune I was looking to maintain similar max performance while lowering the draw/heat. My cpu is on air, so I'm wondering if I'm already hitting the ceiling of performance due to temps with regards to curve optimizer vs defaults (actually had a lower cpu score in Timespy cpu score with curve optimizer and tweaking values on individual cores than I did at default settings By default I get a CB23 all-core score of 15097, an all-core boost of 4470 and an upper temperature of 90°C. Finally I set the curve optimizer to -10 all core, and behold, I get around 620 SC annd 8700 MC. The offset undervolting is the board calling the shots, it can increase performance but not like curve optimizer. I’m going to work on curve optimizer settings today, which I hadn’t done the other day due to ignorance of the value of it. I used the PBO2 curve optimizer to adjust the all-core CPU to -15 and the iGPU/GFX to -10. Enable Curve Optimizer: Oct 14, 2024 · Yes, Ryzen Curve Optimizer is completely safe to use. Single-core performance remains the same cause it's limited by the max boost clock. 7 GHz decreases by 85 mV (from 1. 2) Enable PBO2 then on the curve optimizer do something like a negative adjustment and select 30 If you don't experience any crashes/instability that's it, otherwise you'll need to keep decreasing the adjustment to 25, 20, etc. 3c. Dec 2, 2022 · I have a new build consisting of a 7950x, and x670 gigabyte aorus elite ax rev 1. I set my curve to -30 across the board and have lowered my temps from the thermal throttle at 89c all the time to the 50-70 range with no crashing or problems yet. I sampled data across a range of idle, single thread, nT, and all-core workloads. CO is more pain than gain, for 6 and 8 core zen 3 variants i recommend doing all core "oc", it will massively improve single core temps and slightly all core temps too. By combining vcore offset and curve optimizer, you can really fine tune things like super low idle voltage (lower than -30 CO allows) and at the same time get enogh voltage for light and medium load. 14v, the CPU is because of the lower temps turbo'd as high 'it wants' (I am not overclocking) and this increases the power usage, hence the higher current draw. yesterday i installed ryzen 5600x, im using PBO2+curve optimizer with -30 negative and +200 to max boost, while im playing all games its okay, but in cyberpunk my cpu usage reaches 100% and cpu temp sits in 75-78*C, in other cpu intensive games i have around 65-72*C, is it okay or i should manually overclock to a fixed voltage and fixed frequency to reduce temp to stable 70*C? by the way, my Feb 19, 2023 · Many people have been able to run even larger negative offsets on Zen 2 series processors since their release, although usually with reduced performance being a result. Sep 24, 2024 · To get higher average clock speeds and lower temps, you can do a manual under volt with PBO set to a negative curve of say -20. So curve optimizer on neg causes the CPU to boost more within the same power and temp limit. All of the things we're discussing fall under PBO and PBO2. Curve optimiser defines the shape of the voltage curve. 9-5. Apr 13, 2021 · With Curve Optimizer set to 20, that reduces the vcore by 0. The solution lies in using AMD's Curve Optimizer in the Ryzen Master software or directly in the BIOS. Your BIOS may have a setting for max temperature under PBO, mine does just set a lower temperature there, such as 80C, and then use Curve Optimizer to eek back some performance, might even end up above stock. Even if I do negative -30. May 19, 2023 · To counter this, I have an negative vCore offset to lower things a notch, so temperatures will not reach near 80ºC but cores will boost like crazy for much more time. Curve Optimizer is a new addition and is part of PBO2. I upgraded from a 9900K with Direct Die cooling and that CPU used more power but my temperatures were way lower. (custom loop) Max CPU Boost Clock Override affects CPU differently on different settings, +100MHz can actually outperform +200MHz, and it'll depend on EDC partially and on how curve optimizer was set PPT should provide enough W for the CPU, TDC affects temps but lower the TDC below what CPU needs you also lower performance. Enable Curve Optimizer: Here are my results on my 7700x with some tuning curve optimizer -20 on all cores PBO + 200Mhz temp limit 80C 16 Thread 100% load --> 5250 Mhz @ 80C… Now head over into BIOS and set your PPT/TDC/EDC values to "5" above your recorded values (set it both within AMD Overclocking Menu/Curve Optimizer + Extreme Tweaker PBO settings) If stable, change negative offset to -20 in Curve Optimizer and check if still stable. If you just want a temperature cap then you need to set a temperature limit. PBO advanced PBO Limits Motherboard Curve Optimizer -20 all core. 34volts now 4700mhz 1. Preliminaries Oh. Using the PBO2 curve optimizer would more often than not just increase instability and heat more than lower temps and increase performance. Does the motherboard have PBO/Curve Optimizer support? If not I would just go for the Asrock B650M-H/M. The utility has been extensively tested and validated by AMD and is designed to operate within safe temperature and power consumption limits. 5° At this point, CTR starts to do its thing: measuring the cores for frequency, voltage, and temperature. This will lower the temps and power while giving you higher average clock speeds. 1 and 5. Jan 16, 2021 · Curve Optimizer. Also it seems Really great temps and decent scores but had an outstanding question: is it better to use the offset CPU voltage or better to leave that auto and focus only on curve Optimizer offsets? Without the CPU voltage offset, I could take get my CO nearly to as good of negative curves and the heat was much higher, too. For instance with curve optimizer my 5800x does 5050 on all cores but under long boost with high load it will sit at like 4900 sometimes 4875 on the best cores. In my experience it actually makes the CPU draw more power. 1, boost clocks 4. The Curve Optimizer 'all cores' is working perfect. Sep 24, 2024 · Because of the undervolt (through V/F curve remapping) the CPU now has room to boost more. Is this likely due to what you said about clock stretching and requiring curve optimizer in the equation? I was surprised to see my scores and temps higher running essentially stock. 125) or if I see that I can't reach my target clock but temps are ok I will add an increment of voltage too. The results so far have been pretty good: R23 - 16015mc 1668 sc 3d mark CPU profile - 1006 1 core (all mc scores increased too) Cpuz - 6986mc 673sc My temps have remained the same. Adjusting power limits and curve optimizer will help some, but you can always set the temp threshold to whatever temp you please if you want to make sure it doesn´t run up to 90C. Precision boost overdrive --> Advanced PBO Limits --> Disabled Curve Optimizer --> All Cores All core optimizer sign --> Negative All core curve optimizer magnitude --> 25 Start with all core curve optimizer to -5 and do 2-3 cinebench runs, if it doesn't crash or restart increase the curve to -10, repeat etc until you get crashes or restarts. Jan 21, 2024 · I was able to lower the temperature using Curve Optimizer with the old one. And it’s normal for 3d cache core to only boost to 4. And my performance has increased. Nov 10, 2024 · The 9800x3d seems really good in terms of undervolting I decreased my all core temps from 70 to 60 with the same if not more performance. Hence the purpose for the question in this thread. my 5600g is not running a 11128. Curve optimizer doesn't lower core voltage at all, unless you are in a situation where you are frequency capped. Yeah, this was one of the biggest surprises for me also. My 5600x has the single core performance of a 5800x because of the benefits of curve optimizer If you are using x10 on the pbo scaler then -30 will definitely help with not only the lifespan of the cpu but the temperatures as well as the power draw The lower voltage almost magically allows the cpu to boost higher for longer Curve optimizer doesn't reduce the power/temps of the CPU, it just makes the CPU use a higher frequency for the same amount of voltage. I personally didn't think the performance increase was worth the increased temps with PBO. You need to put like -40 curve optimizer on cache core to increase that at the expense of worse temp. Temps are about 4 or 5 degrees higher with pbo disabled too under multi core load. Easiest is to start at -30 and reduce it if you see instability. Jan 31, 2025 · Solution: Curve Optimizer Adjustment. 2+, and going to be undervolting the 7800x3d through Curve Optimizer. Optional: PBO Scalar Ctrl Manuel 1x CPU Boost override positive to 200MHz. To better document the impact of adjusting Curve Optimizer (CO) counts I set up a test run to compare CO at +0 (no adjustment) to CO at -15 all core. 8 GHZ CO enabled (-30 all cores): 18190 points, max temperature (c): 84. But the curve optimizer 'per core' is not working. I use default scalar. Aug 5, 2023 · I can set "Eco mode" which sets 65W TDP, what Am I supposed to do If I want to set 95W? My CPU stock value is 105W (according to manufacturer).
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