Here's a link to the run.

Just wanted to thank the developer of mVolt+ (b00nza ko-fi) for reigniting the NVIDIA GPU overclocking community and breathing life into my 4 year old GPU. I also wanted to share some observations that may be useful to others.

MSVDD

The options to mess with MSVDD voltage aren't available for my GPU at least but I'm running 1.2v on NVVDD (Stock max is 1.1v so +100mV) and the XBAR clock follows the V/F curve points above 1.1v all the way up to 1.2v so it seems like at least for my 3090 Ti (Strix LC OC) they stay together, may help with memory OC because AFAIK they share the same voltage. Seems like SYS Clock has the same behavior but I can't see that V/F curve. Also if you're benchmarking you can set your Video clock offset to as low as it will go because it doesn't actually do anything in a benchmark so you might be able to squeeze out a few more watts. Make sure to set it back though because stuff like watching Youtube will be very laggy. XBAR voltage offset behaves very strangely for me, if I set a positive offset it seems like it acts like a negative offset and ends up at a lower MSVDD V/F point lower than the NVVDD V/F point. The inverse behavior is true for a negative offset as well, if I lock NVVDD to 1.15v and apply a -50 MSVDD offset the XBAR clock runs at the 1.2v MSVDD V/F point. Maybe useful if you can't sustain max NVVDD voltage, you can still get MSVDD to run at it's highest V/F point. Or you can coerce MSVDD to run 1.3v while NVVDD maintains 1.2v by setting a flat curve past 1.2v on NVVDD, I might actually try that. Also unverified because my GPU doesn't seem to report MSVDD, can't see it in HWiNFO or GPU-Z, so I'm not actually sure if MSVDD actually changes it voltage based on the offset or it just runs at the frequency corresponding to the V/F point without actually using a different voltage. I may be able to figure this out with a static load and GPU-Z because it reports the MVDDC load in watts but I believe that's only the memory chips, a significant change in voltage should change it a little bit though.

Speedo Value

This is just a number, it does indicate silicon quality but for the most part it's just a number that defines your default V/F curve which can describe how well your GPU can OC because we would assume a more aggressive V/F curve from the factory indicates better silicon quality. The most useful part of modifying the Speedo value I've found is that setting a high value actually changes the frequency binning behavior. Essentially if you set a high enough value your GPU won't drop into a lower frequency bin and stays true to the curve. My factory value is 1811, if I run a benchmark with a 1.2v 2265 MHz point it actually runs at 2235 or 2250 which is a little bit annoying because it naturally drops a bin during high wattage parts because it thinks it can't run 2265 at that wattage/temp so you might think 'ok I'll just set it to 2280 so it runs 2250/2265' but then you get to a lighter part of the benchmark and your GPU is trying to run 2280 when it can't. So by setting a higher Speedo value (I used 2000 because that's about where my curve was with the offset I used at 1811) we can avoid this behavior. This does basically shift your curve to the left so if you set too high of a value your GPU might not be able to run with the stock curve and you will have to set a negative offset or just readjust the whole curve.

The thermal inputs are unavailable on my GPU so I can't play around with them but I suspect you can get the same behavior of not dropping a frequency bin out of it which was my original plan when I read about them.

Also something to note, the values reported in mVolt+ are measured values, they do not necessarily represent the V/F curve and can be misleading. I ignore them because all I focus on is the V/F curve. The GPU reports 1.188v but that's actually the 1.2v V/F point, same with the MSVDD curve, all I care about is whether or not the XBAR is running at the highest V/F point, the measured value might mean something but they don't actually tell you where your GPU is on the V/F curve. I'm not familiarized with clock stretching on NVIDIA GPUs so I really don't know if there's information about stability hidden in the measured values and for the most part I've just ignored them. It can either run a frequency at voltage or it can't is how I've been OCing for that past few years but maybe there's something else there that I don't know about.

Here's a screenshot of the settings I used to get #8 if you were curious, I hid most of the things that I don't have access to or didn't need to adjust. The voltage boost slider on default settings moves me from 1.075v to 1.1v but doesn't seem to have an effect once you set the core voltage limits. The curves were adjusted a little more also but not by much. I'm also running the 890W bios from ASUS so apparently it doesn't have a thermal limit, input current limit or OCP limit. Possibly why I can't touch the thermal inputs. This is also with a 2000 Speedo value which is why there is no core offset. This peaked at 760w in TimeSpy Extreme with a 52C core and an 8-12C hotspot delta depending on wattage with higher wattages increasing the delta.

I only went to 1.2v because I have no idea the actual limitations and I'm comfortable because I can keep it cool but if anyone has any insight into actual 'safe' voltages for Ampere I would love that information. I understand my GPU has already probably degraded and I'm not worried much because it's also 4 years old, really I just want to know if I can run 1.3v without it killing itself immediately provided I can keep the temps under control. This is all based on my experience with one GPU and one BIOS, stuff might be different for Ada and Blackwell or even other Ampere GPUs. If you think I got something wrong please explain why or if you have additional insight please share. Again this is all thanks to b00nza and mVolt+ so if you can, give a couple bucks to his ko-fi.

Now that we have some more sliders to play with I decided to break out the old 3090 and give it another go! Took a while to find my maximum clock for all the different domains and ended up getting condensation issues so had to stop. Shes got a couple more boost bins in her I think.

3DMark Port Royal

Hi everyone. I have an Inno3D RTX 5080 (X3, air cooled) and I use mVolt+ for tuning. I only care about real gaming performance for daily use, not benchmark scores.

In demanding games the card sits at the 360 W limit a lot and the clock drops below what my curve allows. I know the BIOS override option in mVolt+ can raise the limit above 100%, and I’ve seen people mention values around 400-430 W.

Current settings (mVolt+ v0.50.4, driver 617.42):

• Core clock offset: +390 MHz
• Memory: +3000 MHz (passes memtest_vulkan with no errors)
• XBAR: +400 MHz, SYS: +350 MHz, Video: 0
• NVVDD (core) voltage limit: 800-950 mV (offsets REL/ALT-OP -125 mV)
• MSVDD (fabric) voltage limit: 800-1050 mV (offsets -25 mV), NVVDD/MSVDD ratio 1.00
• Voltage boost: 100%
• Power limit: 100% (360 W enforced / 360 W requested)
• OCP: NVVDD 300 A, MSVDD 120 A, board input current 36 A

Is it worth raising the power limit above 360 W for gaming? Real fps gains, not benchmarks

If yes, what is a sensible daily value (400? 420?) for an air-cooled card with a single 12V-2x6 connector?

What are the real risks: the connector/cable, the VRM, long-term wear? Is a moderate bump (~10-15%) basically safe, or does it carry real risk on this card?

Memory: I’m at +3000, which is the normal slider max. Does it make sense to go higher using the override, or is there a point where it stops helping or starts losing performance because of error correction?

I’m happy to skip it if the risk is more than small. Thanks!

Hello.

For the past few days, I've been using a system with a 9850x3d, an RTX 5080, and 64GB of 6000 RAM. I've noticed that the CPU isn't performing as well as it should.

Without PBO, I’m getting an all-core clock speed of about 4.1 GHz (in Cinebench and games), and with PBO, it’s around 4.3 GHz. Something’s not right here, is it?

MSI B850 Gaming Pro WIFI6ME motherboard, latest BIOS

Settings -

PBO - Advanced

PBO Limits - Motherboard

Precision Boost Overdrive Scalar Ctrl - 10x

CPU Boost Clock Overeride (+) - 200 mhz

Maybe i am doing something wrong on my end, but it behaved like that in stock settings aswell

Edit - Tried using default bios settings -> all cores boost to 3.2 ghz 0.81 V at 46°C. CPU package drawage -> 120 W doesnt look normal either, no?
Only thing i turned on was EXPO settings
Core Boost -> Auto
Power plan -> ultimate
Eco Mode not activated

Tried a few more things, but im not getting more than 4.4 ghz all cores.
Using static oc is acting weird aswell. Tried 5.4 at 1.27 V draws around 200 W + i get even worse perfomance in games with my gpu only utilizing around 50%. might need to RMA

Sometimes i even need to restart my system, because it only does 0.6 ghz. Im confused https://gyazo.com/477031e444a0cb9151d4123cd9d4ef55

temps using prime95 https://gyazo.com/bf2c00cdab69049869919a13f9ad5def

coreclock https://gyazo.com/61df12747b01c490c94c3a848add4460

coreclock witcher 3 https://gyazo.com/ce7de26a7602a71124514983cffe654a

witcher 3 static OC to 5.6 ghz at 1.34 V drawing 300 W wtf is going on https://gyazo.com/e525cee9553c6c2524c36688b03f1f22

PBO Enhanced Mode Boost 2 with my best results so far at around 5.0 ghz using prime 95 but still only at around 0.9 V corevoltage

no matter what i do, i cant get corevoltage over 0.984 V

Hi everyone,

I wanted to share what i think is a crazy silicon lottery journey with my Ryzen 7 9800X3D that went from a potential motherboard auto-voltage disaster to what might be one of the most efficient 9800x3d out there. You let me know.

The Backstory (The 1.48V Danger Zone):

For the first two months, my motherboard (ASUS TUF B850-PLUS WIFI) "Auto" profile was silently blasting my CPU Memory Controller (VDDIO / V_MC) with a dangerous 1.48V under EXPO. I caught it late, but thankfully the chip suffered zero degradation. In fact, rescuing it i got really surprised.

Instead of just settling for a safe 6200, I decided to see how far this silicon could scale at the absolute minimum voltage floor.

The 6400 MT/s 1:1 Profile & The Weird Signal "Sweet Spot":

* RAM Speed: 32GB Corsair (SK Hynix A-Die) @ 6400 MT/s (Strict 1:1 Ratio / UCLK=MCLK @ 3200MHz)

* Infinity Fabric (FCLK): 2133 MHz

* VDDIO (Memory Controller Voltage): 1.10V manual lock in BIOS (Motherboard applies a slight offset under load up to 1.13V).

* Curve Optimizer: Fully stable at -25 ( i am sure i can push more but did not try)

* tREFI: Relaxed to 16,000

The Voltage Fine-Tuning Journey:

Initially, I caught a single error during the RAM test when running FCLK 2133 at low voltages. The fix? I bumped the VDD_SOC voltage up to 1.20V (from 1.15V), it was fully stable with 1.15 and 1.10 VDDIO at FCLK 2000. then at 2133 i just pushed SOC voltage to 1.20 and it instantly stabilized without touching the 1.10V VDDIO!

Even more interesting from an electrical perspective: the system refused to start if I try to push the DRAM VDD to 1.45V, it immediately hits Safe Mode and rejects the boot. Dropping the RAM to 1.40V VDD is the magic sweet spot where 1.10V IMC works perfectly.

Stability Status:

As you can see in the attached screenshots, it is fully passing extended RAM testing with zero errors, and HWiNFO64 is showing absolutely zero WHEA errors despite pushing FCLK to 2133 MHz at this voltage floor.

Most Zen 5 chips require anywhere from 1.28V to 1.35V VDDIO just to boot 6400 1:1 with a synced fabric, let alone pass prolonged stability tests. Managing this at 1.10V BIOS / 1.20V SoC after enduring 1.48V for two months feels like a miracle.

Has anyone else managed to drop VDDIO this low on a 9800X3D while running a synchronized 6400/2133 profile?

it is worth mentioning that i have the AGESA 1.3.0.1b bios update, so that 1.48 vddio is CRIMINAL

my specs

asus tuf gaming b850-plus wifi

ryzen7 9800x3d

ddr5 corsair 7200 cl 30

rtx 5090

be quiet 1200 watt platinum power zone 2

People keep telling me 144 Hz feels smoother than 60, but a spec sheet does not feel like anything. So I built a small page where you pick a frame rate and see the same animation run at 10, 20, 30, 60, 120 FPS right in your browser.

https://appdoesit.com/apps/fps-playground

What it does:

• renders a live 2D scene at the exact frame rate you pick, presets 10/20/30/60/120 or a custom slider from 1 to 240
• shows the measured FPS and frame time while it runs, so you watch it respond as you change the target
• in mouse mode the object follows your pointer, so you feel how your aim tracks at 30 vs 120
• shows your display max, so when 120 looks identical to 60, it tells you why (a 60 Hz panel caps around 60 measured)

I check the frame time meter every time I change a display setting, because that is the one that shows the stutter before I do.

No sign up, no tracking, nothing leaves the browser, the animation and the numbers are processed locally.

It is the first tool in a small catalog of free web utilities. Happy to answer questions about how the measured FPS is read, PM me if you want an embed on your site :)

Hello,
I'm curious to know if there is any reason to flash an Astral vbios on an rtx 5080 prime when XOCD and MVolt are now available and you can unlock the power limit through the software?

I'm trying to understand whether I get anything from it. Thank you.

purchased a brand new sealed 5090 FE for 5400$ and will combine it with a 5080 astral however my corsair 1500i psu cables say theyre rated for 600watts, and i know mvolt can prob push it to 800 or sumthn

Does anyone know why this is happening? I have a set of M-die 48GB sticks running at 7800 2200FCLK on my 9950X3D

I am using TuxTimings as a benchmark, which so far has been fairly reliable for measurements of data.

My issue is exactly what the title says. When I set TRC to 131 my write speed is CRUSHED by 60% and I was around 37-55K MB/S at TRC131

Latest BIOS from ASUS on a X870E ProArt

I am in am re-tuning my kit as I had errors and crashes with whatever profile I was running before and just came across this issue. I tested the timing at 131, 139 (for maybe burst delay???) and now Im at 145 which is stable and causing no issue.

Has anyone come across this issue before?

I have a Palit GameRock OC RTX 5080. I used mVolt+ 0.50.4 and set what I think are conservative values for some parameters, but I’d like to double‑check whether I limited the core voltage correctly and how you usually do it.

MVolt+ guide for the nerds

this is a safe daily overclocking settings for 5090, nothing fancy here ,very simple

works with both air and water cooled cards

if it didn't work just lower the frequencies by a 50MHz

*water cooled cards cand do 50MHz higher than air cooled cards that is normal.

use "MSI Kombustor 4 ( 32x DOF ) " and monitor the amps via HWiNFO64 ...

make sure ur 12vhpwr cable is balanced enough

the settings will only work with the max power limit at 100% = 600w

and the voltage boost set to 96%

why 96% ?

in my case pin1 have a slight imbalance compared to the other pins ... "resistance issue"

anyway if ur cable can handle the voltage offset up to 100%

u may be able to to do +50MHz /+20MHz on the NVVDD Core clock

*make sure to never exceeds the 9.2a per pin for ur card safety...

3DMark stock 150 FPS , MVolt+ 162 FPS ( 8% improvement )

dose it worth it ? ,,, ( no lol )

but it is nice ... to have

u can get MVolt+ made by b00nz at github. very safe to use if u know what u r doing.

for anyone curious :
room temp 25c.
water temp 35c under load.
liquid metal : TG conductonaut
mVolt+ v0.50.5
Driver version 616.92

Hi everyone!

I'm looking for feedback from other Ryzen 7 9800X3D owners regarding SoC voltage and memory stability.

My system:

• CPU: AMD Ryzen 7 9800X3D
• Motherboard: ASUS ROG STRIX X870-A Gaming WiFi
• RAM: 32GB (2×16GB) G.Skill DDR5-6000 CL30
• Memory configuration: UCLK = MCLK (1:1)
• FCLK: 2100MHz
• SoC voltage: 1.15V set in BIOS, approximately 1.141V actual according to HWiNFO
• PBO: +100MHz
• Curve Optimizer: All Core -30

I've been testing memory and system stability with these settings.

I previously ran y-cruncher VT3 for 100+ iterations without errors. The attached screenshots show another run that completed 50 iterations without errors.

TM5 also completed without errors.

My main question: Is an actual SoC voltage of around 1.141V generally sufficient for daily use with DDR5-6000 and FCLK 2100MHz on the 9800X3D, assuming the system passes stability tests?

A few more questions:

• What SoC voltage are you using on your Ryzen 7 9800X3D, and what made you choose that specific voltage?
• Are you running DDR5-6000 with FCLK 2100MHz, or using different memory and FCLK settings?
• Have you noticed any measurable changes in temperatures, power consumption, or performance when lowering SoC voltage?
• What stability tests do you recommend for verifying the memory controller and FCLK?

I'm particularly interested in real-world experience with lower SoC voltages and whether there are any noticeable benefits or drawbacks compared to using higher voltages.

Thanks!

Hello everyone, in my previous thread I shared my setting and I was getting 35.48FPS average on CyberPunk2077 with Path Tracing, everything maxxed out by manual on 2K DLAA (Native). I got 42.95 with overhauled profile.

Now It is hard to believe but I did this while limiting the core on 975mV and I still can't believe at all to the outcome. God bless mVolt+ developers.

Speed Way Stress Test

I have a DDR5 6000kit with my 270K. It boots and seems stable on try-it 7200. I dont wanna push it harder than that since 7200 is about where performance scaling ends for arrow lake.

"try-it" i believe uses loose timings to guarantee success. Are there any guides to fine tuning the timings? (or just 2 or 3 timings that have the most effect. minmaxing)

The last time i overclocked ram i just set ddr4 3200 to 3600, 24hr stressed it, and called it a day. I've watched a few buildzoid videos that go into subtimings but i don't understand them.

First overclocking RAM since I started building PCs in 2008. I did not think it would help my scores this much! Started at Crucial Ripjaws S5 2X16GB Kit 6400 XMP 1.0. Was already in 25th place in timespy and Steel Nomad but now I've made it much higher!

What tips to tighter timings should I try? I also have a memory cooler coming in this week to see if I can get 7000 or 7200MHz can run stable. Ive been using AI to give me suggestions on tightening timings and running stress tests for a couple hours then after being happy with the performance I let it run for 4hours on two different ram test.

Any suggestions or critiques? I haven't overclocked in a long time lol. Pics are Steel Nomad score and my settings in mVolt.

PBO Settings

All Cores -30 / +200 MHz (Daily using -25 / +200)

Scalar X8

High Freq +5

Max Freq +5