7800x3d undervolt pbo reddit. Dec 13, 2023 · If the CPU asks for 1,3v then the board supplies that minus whatever you apply to undervolt. You could run stress test for hours with no errors, but as soon as your pc is idling or just browsing the internet the pc crashes with 7800X3D PBO… My 7800x3d is performing poorly for what it is so I'm trying to undervolt to see if it will get better. Key Data Points: - CPU Thermal Limit: 89C - Curve Optimizers: PBO negative offset (measured in 'an order of magnitude') - Load Line Calibration (LLC): 8 settings (Auto, Normal, Standard, Low, Medium, High, Turbo, Extreme) - Settings Changed Per Test: Only LLC and PBO curve for each core - Indicators: Failed tests are marked in the notes and the If you want to get a power efficient gaming cpu, the answer is same as last gen, the 8 core x3D part, so the 7800x3d. I have some pbo adjustments already made with EXPO enabled and FCLK 2133 and 6200mhz cl30(haven't had time to do anything else yet). I used a $25 first time customer coupon from google at Microcenter. Enabled expo and PBO and afterwards my 7800X3D stuck at 4. My setup: Ryzen 7 7800X3D AsRock B650M Pro RS 2x24GB G. Stress testing will only reveal if your undervolt is fantastically too low. I was running my 7700X with a -30 offset, a max temp of 85C and a max power of 85W and while I lost a little performance temps dropped from 90C to around 61C in Cinebench. Restored default settings (f7) and reapplied only expo, 5050 boost was back. 15 Voltage are well within the safety margins of the maximum voltage that can be safely applied to 5nm Ryzen Get the Reddit app Scan this QR code to download the app now Maximum temperature optimization for Ryzen 7 7800x3d processor (Undervolt, PBO, CO) an i7 6700k im likely to return my 7800x3d and stick with my 7950x. If it's not stable, add +2mV to all cores and see where you're at. Jul 25, 2023 · #1. When I change the PBO limit setting from auto to manual, it shows these values: LLC is not, by any means, a type of undervolting. CO stability is hard to test without tons of different benches/stress tests, games generally do not cause problems unless massively overdone maybe ram/corrupted OS issues, not many chips are stable at -30 / -20 and people claiming they are stable just haven't experienced issues yet Is this PBO2 Undervolt on my 7800X3D any Good? 7 Cores on -30 PBO2 while Core 5 has -10 PBO2. At the end, the higher the LLC value, the less UV is applied, helping the stability. There is not much point (imo) trying to power limit the 7800X3D. With a PBO settings of -25 undervolt and 75C temp limits, I saw the CPU staying in the mid 60s during gaming for the most part and the build is very silent. Other BIOS screens will be similar but not identical. Currently, I see temperatures up to 85-86 in Cinebench. I've attempted an OC of my RAM using Buildzoids timings (so it's Hynix die despite being CL38) which has been fine, and a PBO CO undervolt on the 7800X3D. Mine is on a 360mm radiator and doesn't hit 60c at 5ghz. Under "Curve Optimizer" change the sign to "Negative" and then you should apply as high a number as is stable. 25. 3V and set VDDP to auto. Try -0. 2 or 1. do I need to enable PBO? Or do I just undervolt without enabling PBO. I’m making this post in hopes that it will help other 7800X3D owners (current and prospective). Just performed some tests on my 7800x3d and i wanted to share some results from Cinebench. In my case, that is "39". My suggestions for a "quick and dirty" 7800X3D undervolt (one that is reasonably stable for most people that doesn't take several days of effort) are to do the following: Boot into BIOS and set your CPU SOC to 1. 4 GHz and an overclock speed of 5. As for VSoC, yes it needs to be 1. I recently switched off from a 10700kf and used intel extreme tunning, now I am using a AMD 7800x3d with 32gb of 6000 mhz on cl32 timing. This means that the limited amount of voltage available to the 7800X3D is maximised, and the voltage won't droop under load. It consumes 80-90 W max by default, so lower power limits, or PBO won't help. 6 GHz. Activate PBO. ive already noticed longer loading times into games and random stutters on non in game situations like loading a program. Literally add +5mV to cores 2-7, and +15 to cores 0-1. in other programs pbo helped like occt/prime clock speed increased from 4 One thing I noticed, which most reviews failed to report, is how ridiculously effiicient you can even boost this chip further. I just got a 7800x3d that I ended up deliding with a custom loop. you can then also try to set a PBO all core negative of -15 to -20 and limit PPT to 75000 (75w). More specificially, that I should set tjmax to default, PBO to -20, ppt to 75w, soc to 1. No powerloss from having 2 dies and having interconnects between them, no weird algorithms for juggling the workloads between the 2 dies, just a single die, with 3dvcache access to every core. Nov 8, 2023 · i tried undervolting my cpu again, and i got some insane results. If you are undervolting and crashing when idle, your undervolt is too low. First, enter the BIOS upon boot. cinebench boost all cores up to 4. 2 ghz. I'll be brief: I want to undervolt my 7800x3d, but want a good place to start, or a guide of some kind. 5 All I did was set it to -20 all cores (via PBO -> Advanced). My Cinebench score decreased by 200-300 points. I personally use pbo all core -30, temp limit 80c and this gives me the best score 18740. Based on my research it seems the bigger gains in temperature come from PBO limits but I am stuck with those as I have no idea what to set them to. Hello everyone. So what i have done so far is enabled PBO and set the curve optimizer to All Cores -> Negative -> 20 The wattage plot might not make sense, but PBO -20 was slightly below the thermal limit, resulting in higher power draw. 3) Under "Curve Optimizer" change the sign to "Negative" and then you should apply as high a number as is stable. R23 score is 17377. 060 and see if its stable. 2) Activate PBO. I just used Ryzen Master to activate PBO (no manual changes) and curve optimizer set to -20 all core. You can let PBO automatic but use curve optimizer to get more all core freq out of the CPU. Hey, I just wanted to share a quick overview over the results I got, with like no effort at all. I couldn't find similar information on PBO for the 7800X3D, so I decided to gather it myself. I set my platform thermal throttle limit to 80 and adjusted the curve optimizer to negative 30 all cores. Case: Pure Base 500 FX Those Ryzen 7000 CPUs can be quite a bit power hungry if you let them behave like they want to, which is why today we're setting this R7 7800X3D to be more p 7800x3d PBO overclock Hi guys, just today I received my B650 Aorus Elite AX, 7800x3d and 32gb 6000mhz cl30 ram. (my motherboard is the asus rog crosshair x670e gene) my curve optimizer results: i got -60 on core 0-6 and core 7 is stable with only -30!!!! if i run a cb r23 multi core test, my score is a little above stock and my cpu only uses Also FYI, Ryzen Master will not allow you to set PBO offsets for the 5800X3D but you can use it to monitor clock speeds, voltages, etc. Cooler: Dark Rock Pro 4 - fan curve set to Standard . Install was plug n play on a B450 mobo, but I updated the bios anyway to get access to PBO for the chip (old Bios did not allow PBO with this So ive just build my pc with the Ryzen 7 7800x3D, which is a big upgrade from my last cpu granted, however with it came really high temps / temp spikes when playing games as well. This is the settings that made it go past 1 Hour Prime95 (Blend all of the above) without errors. I've been looking a lot into optimizing my entire system and came across undervolting. I only activated PBO and entered 68 as the PPT value, leaving TDC and EDC as they were. Hello everyone! I hope you're all having a good one. The whole point of negative PBO is to "make room" (in voltage) for more and longer-sustained overclocking, including via built-in mechanisms like Core Performance Boost (CPB). 15v, and vddp to auto. Given the popularity of the 7800X3D and other Ryzen CPUs in the SFFPC community, the recommendation to undervolt shows regularly. You are better off focusing your efforts on your cooler or mount. I'm only on -30. The 7800x3d does seem to like a good undervolt. But you can still undervolt it, limit the CPU temperature, or enabling diffrent TDP settings inlcuding Eco Mode (65W) for lower CPU temperature without sacrificing the performance. 5. The measurements come from HWiNFO and are processed by my python script. 05ghz all core. Apr 16, 2023 · Ryzen 7 7800X3D PBO/UV: Corsair H115i 280mm water cooler, Precision Boost You can also now undervolt the X3D chips using the Curve Optimizer that can be accessed either via the BIOS or Ryzen . I set the Curve to -35 without any stability issues, but I am unsure about the values for TDC and EDC. My core temps are 72. That's with stock voltages tho, with CO undervolt performance will actually increase. May 5, 2023 · With the 7800X3D vs the 7950X that I have, the main difference is that with the 7800X3D the single core boost frequency equals the max all core frequency, meaning, there is no single core boost. 3 testing) I did some tests with my 7800x3d with n7 b650e motherboard. 9ghz, for some reason they don't want to raise it higher, no matter what I try to do. 7800X3Ds don't hit 88W PPT out of the box. 7800x3d is already a ridiculously efficient chip but, apparently, I can blindly go to PBO and set all core to negative 35 and straight up runs cinebench for 3 hours now no crash. Gigabyte Gaming B650 X AX rev1. This means that the limited amount of voltage available to the 7800X3D is maximised and the voltage won't droop under load. I am needing assistance with Ryzen Master tunning and looking for some recommendation. 7 GHz in Cinebench R23 I'm very happy! This means a drop in almost 20 degrees with fans set to 40%! I'm having the same result, just about. I never even ran any synthetics this time around because my OC 4. then load expo profile. Meh I say. My conclusion is that the 7800X3D doesn't require a beefy My 7800x3d runs at -40 and Extreme LLC (there is a Super Extreme option by the way which completely flattens the line that I am scared to use). I tested it in Prime95 blended/small/large Cinebench 24, y-cruncher, Core Cycler, Cyberpunk Ultra Ray Tracing and No Ray Tracing for 1hour + and it is stable no whea. 3ghz all core. I have -30 PBO and I'm maxing at 4,850 average clocks. 15 V on a good enough chip. Thus, the overshoots from the that 1. Hello, I'm new to undervolt / overclock and after backreading from here and other sites I finally decided to UV/OC using pbo. The 3070 just isn't keeping up whatsoever with the 7800x3d. Prefer frequency option is bugged and doesn't work with PBO on, but it seems to not matter anyway. The only thing annoying me is not being able to adjust the actual max frequency (not quite true I realise) - but amd architecture is very very different to intel and I have come to accept its virtues… and that one understandable limitation. cooling ek velocity 2. You could bump your clockgen speed a little and get more speed. Right now I have expo for ram enabled, no other tunes -30 all cores ppt to 88 all else auto I was reading on reddit that people recommend putting the ppt at 75, but this made my cinebench score much lower and also the boost clocks lower. Enabling 'ECO' mode will not make the chip run cooler. 15v instead of 1. (pic shows 1. typically very odd when one moment youre stable at -32 then If you use EXPO with a 6000 kit I advice to change the following: load bios default. I get around 72c during gameplay 5. 050 or -0. CPU runs at 60-65 in CS2 on max settings, fans are cool and FPS is absolutely insane. Also, Some motherboard manufacturers have released new BIOS's that will allow you to set PBO offsets from the BIOS so it's always applied at boot (eliminating the need for PBO2 tuner scheduled tasks), which was Is it even worth it to enable PBO to adjust curve optimizer on the CPU? Thinking of setting it to (all cores) (negative) (30) in hopes of reaching 4800 MHz or higher. I jus installed 7800x3d and playing around with the undervolt. I only caught this behavior when monitoring via CPU-Z and realized that the BIOS on Auto does stupid things to the SOC voltage. these settings give great result for the 7800x3d. It compensates the voltage drops when starting a heavy task, so the cpu is more stable. What else? BIOS shows me options of: Both had zero performance improvement going from better tuned ram, PBO Tuner and undervolting at 4k. Eco mode on 7800X3D has no effect. Reaching 68-69 degrees and 4. 65W eco mode is a PPT of 88W. I removed my -22 undervolt and turned off PBO. May 9, 2024 · In my experience, the 7800X3D doesn't need any tweaking, just a good cooler. Which way is the best way to do it to yield the best performance. In some cases, the 7800x3d is slightly faster than the 7950x3d. In my case that is "39". I have more FPS, the games run way smoother, and my 1% lows increased significantly. However I had some settings copied from a YouTube video for the 7800X3D stating that I should set it with the following values: Precision Boost Overdrive - Advanced PBO Limits - Motherboard PBO Scalar Ctrl - Manual PBO Scalar - 10x CPU Boost Clock Override - Disabled Platform Thermal Throttle Ctrl - Manual Undervolting using PBO will allow your CPU to boost near to max clock speeds using less voltage (heat). I’m going to undervolt all cores on my 7800x3d starting with -20. I thought I'd put together a quick guide on the most basic approach to this technique using my ASUS B650E-I. The following is a summary of two weeks worth of testing/benchmark using AMD’s Precision Boost Overdrive (PBO) and Curve Optimizer (CO). If that's stable, you can try taking off a few mV at a time. The 7950x3d needs to be controlled by a driver, which may be a reason for the performance difference between the two CPUs. 15v. I have experience undervolting through PBO. I'm new to this PBO thing, so I'm not sure if there's something else going on or AMD says Ryzen 7000 is designed to run at 95°C for 24/7. Or put the undervolt on it at -30 in PBO and keep testing with different minuses in cinebench with hwinfo open? I just want to set it up as easily as possible so the voltage is ok and I get the good performance with low heat etc. But so far my settings are: core 0 -30 core 1* -35 core 2 -30 core 3** -30 core 4 -30 core 5-30 I have the same problem was just about to post it few mins ago when i created this reddit account. Poor time spy cpu score led me to run cinebench r23 and it's getting 16650 multi core with stock settings, 17258 with -20 offset on all cores with pbo on auto (set it through asus bios not ryzen master) The gaming difference was instantly obvious at 4k. 88 seemed to give best results. then change SOC voltage to 1. Undervolting (and optionally tweaking PPT EDC TDC settings I'm PBO) will not only radically reduce power consumption and temperatures, but will also significantly improve performance due to increased voltage and thermal headroom. The chip, which leverages AMD's second-gen 3D V-Cache to boost L3 capacity to 128MB, beats Intel's Core i9-13900K in gaming by 7%. Presets & Cinebench R23 score: PBO: all around 18100 (@4865MHz 81C) PBO -20 mV: 18277 18496 18388 18448 18483 (@4925MHz 80C) PBO -30 mV: 18756 18700 18673 18706 18706 (@4965MHz 80C) PBO -40 mV: 18875 18945 19015 19073 19132 (@5039MHz 79C) The 7800x3d is purely an 8-core CPU with 96MB v-cache, while the 7950x3d is an 8-core CPU with 96MB v-cache and an additional 8 cores with regular 32MB cache. I've tried raising the boost clock override to the max it allows of 200, but I think it's only raised my clocks by like 25mhz. I built my 2nd PC yesterday and I noticed that my cpu is going 61 to 67 degrees at 1% or 5% load. Trying to undervolt my 7800x3d Started from negative pbo of 30 And in prime95 tests my PC shut off after few seconds So I went down in pbo and for now seems like 15 is stable enough to run (checked for few mins , but played few games afterwards and it was stable although I had like a big freeze In one match and it fixed itself but It was for 5 So far the performance has been very impressive, nothing to add here. I read a post from another user mentioning that if you go with maximum LLC for your motherboard, you can essentially undervolt the heck out of it. I finally set on 75W, still using the -30 negative curve optimizer and +150 MHz positive PBO clock. PBO curves, by themselves, are not really a power reduction mechanism even if they do nominally reduce idle draw a bit. PBO Thermal Point 85°C/75°C/65°C to limit the Ryzen 7000 temperature Welcome to /r/AMD — the subreddit for all things AMD; come talk about Ryzen, Radeon, Zen4, RDNA3, EPYC, Threadripper, rumors, reviews, news and more. Max out the LLC for your CPU Vcore. Skill RipJaws S5 DDR5-6400 @ DDR5-6000 / 1,3V Thermalright Phantom Spirit SE 120 Results what I've tested myself, pbo has a minimal effect on temperatures and power consumption, at least in cinebench. Maybe this info is not longer relevant, but I got the exact same issue in my strix b650e board. 7800x3d would randomly run aida64 sha3 butter smooth or just black screen crash at stock settings no pbo. leave the others default. BTW I found that a PBO curve of -22 and LLC to lvl 6 for my 7800X3D + Asus X670E-E is somewhat a sweet spot. How should i test the 7800x3d? i do not know how to setup prime 95 or corecycler,i just set a temperature limit to 80 and -30 pbo + amd expo on,i seem to be crashing pubg for example to desktop,3dmark timespy test and cinebench can run forever x670e tomahawk msi board The SOC voltage default setting is AUTO for ASUS boards and it is notorious for auto incrementing the voltage to unstable levels when turning on PBO to OC or undervolt. My 7800x3d actually ran about 5°c cooler after setting PBO to -30mV and adding +200mhz to the clock speed which gave me about a net increase in a cinebench r23 multiform score of about +800 over stock setting As my post states, I was informed by someone on reddit that my undervolt and voltage settings were somehow incorrect and non-optimal for the 7800x3d. 25 V maximum with 6000 MHz RAM, but it may work even with 1. Things to check Go to bios and set your pbo curve offset to -30 all core which will both dramatically drop temps and should let you get at least 5. My 7950x3d still boosts to max frequency on both cores quite often. TLDR; Page 1 : AMD has launched the $599 Ryzen 9 7900X3D, a 12-core CPU with a base clock of 4. Then work your way up or down. ATM I am running with Precession boost with a undervolt of 1. I am new to the AMD platform. Might I add - on a personal note - this is my first AMD build. Asus boards were overvolting the cpus so potentially that would mean the undervolt from this is effectively lower. 62 all core 3900x with 3800cl14 kinda smokes the 5800X3D. I'm trying to set PBO + curve optimizer and coming from a 5900x and reading a lot of guides, it looks like best cores should not be able to have lower negative offset than the other ones. Should I change the throttle thermal limit as well or just leave that default? Also can I leave EXPO disabled with PBO curve optimizer enabled? Aug 1, 2024 · 1) Max out the LLC for your CPU Vcore. I bought a 7800x3d, and so far I really enjoy it. That's it. Im using the AK620 Zero Dark cpu cooler btw. zsjfxezissaqhbsjblmmywsnibcxzfnjyfllokjwoylkokuzlxnsty
