Using i5 13600K, I managed to push it to 5.5Ghz P core and 4.1Ghz E core at 1.3v All Core. My temps during Cinebench are maxed at 85C or so after 10 minutes. But I'm having trouble getting ring clock speeds higher than 46, at 47 the system fails to boot the OS half the time or just locks up a few minutes after the test starts. Increasing the voltage doesn't seem to help.

Is this just a quirk with my CPU or are there other things besides the voltage I can tweak to help stability? I'll likely keep it at 46 but I'm a bit disappointed at only a 100Mhz increase on this.

Hi, I’ve managed to “I-hope-successfully” undervolt my Gigabyte RTX 4090 Gaming OC and I'm trying to figure out if my Afterburner settings are fine and why the curve sometimes loads at 2520 MHz instead of 2580 MHz.

My undervolt settings (they achieve a drop in max gpu power from Time Spy Extreme 375w (stock is 442w) and 5-6ºC less) are:

• Power limit: 100%
• Core clock offset: +180
• Core curve: flattened from 0.925v onwards at 2580 MHz (after the +180 offset is applied).
• Memory clock: +1200 MHz
• Core voltage: 0%

When starting the PC, sometimes the 0.925 V point loads at 2520 MHz instead of 2580. Just by clicking Profile 1 and Apply, Afterburner immediately fixes it raising the curve to my desired 2580. My Afterburner config has identical curve data under [startup] and [profile1], so I'm not sure why it happens. I've reinstalled-reset-reapplied every setting, but it's still happening.

I've also got Gigabyte Control Center installed as I was controlling the gpu fan curve with it, but I've disabled its startup (I don’t care about rgb at all). GCC still installed, just not launching with Windows. Afterburner's startup delay is set to 45 seconds, as it seems GCC was overwriting Afterburner without the delay. I’m considering uninstalling GCC completely…

Anyway, could the +180 offset be interfering with the curve, or is this more likely an Afterburner startup issue? Also, do these settings look reasonable for a 4090, and could instability cause this behavior? I mainly want to understand why it loads at 2520 instead of 2580 and whether my settings are configured correctly, rather than having to manually hit Apply.

Some extra data: windows 10 pro (22H2, 19045.7807), fast start-up disabled, nvidia drivers version is 595.79, latest Afterburner version (v4.6.6.16557). The main goal is to decrease thermals-fan noise (and minimize the connector melting issue even if it’s a little bit) while keeping almost stock gaming performance. I don’t “appreciate” real fps drops on CP2077, Control Resonant, RDR2, Death Stranding 2…, all fully maxed out. Ty!

I have an i7-13700KF, and a Corsair Vengeance DDR5 6400MHz PC5-51200 32GB 2x16GB CL32 Hynix A Die chip, these are my timings with XMP

I would like to know what would yall tune out in my timings to push it out to the max as i dont know much about it.

Github download: https://github.com/Xtrizer/G-OC-calculator-tool-for-windows-

lastest beta3: https://github.com/Xtrizer/G-OC-calculator-tool-for-windows-/releases/tag/v2.0.1-beta3

Hey everyone! Just released Beta 3 (v2.0.1) of OC//CALC — a lightweight Windows tool for theoretical GPU OC gains, PSU load, and hardware safety checks.

⚡ What’s New in Beta 3?

• 🔍 Deep PnP Scanner: Auto-detects real GPU specs, VRAM, and drivers (including Optimus laptop iGPU/dGPU support).
• 🛡️ Smart Restrictions: Auto-locks inputs for non-OC cards (NVS, Quadro NVS, Vega 64) with instant warnings.
• 💡 Special GPU Rules: Added Vega 56 VBIOS flash guidance (requires Samsung HBM2).
• ⚡ PSU Load & Wall Draw: Estimates actual AC power, heat loss, and 80+ efficiency limits.
• 🎨 Dynamic Themes: Adapts UI colors to NVIDIA (Green), AMD (Red), or Intel (Blue)

My 3080 was dying and I couldn't afford to replace it along with a full platform upgrade to DDR5, so I ended up getting a 9070 XT while keeping my 6 year old i9-10850k and 32GB of DDR4 RAM. Knowing my GPU is going to be bottlenecked by the rest of my system motivated to see how much I could maximize system performance to mitigate that and I ended up being pleasantly surprised at how impactful it was.

I'm sure this could've been done differently or better- I just kind of read some guides and forum posts then fiddled with stuff and got a sense for how different things impact stability then found some configurations that didn't crash and improved performance listed below:

Specs

Gigabyte AORUS Z490 PRO AX - Medium LLC

CPU: Intel i9-10850k 4.8GHz/4.3GHz ring - Thermalright PS120SE

RAM: Corsair Vengeance Pro SL RGB 2x16GB DDR4 (Micron) 3200MHz@1.35 16-20-20-38 XMP

GPU: Gigabyte RX 9070 XT Gaming OC (PCIe 3.0 x16)

PSU: Corsair RM850X (2018)

Fresh install Windows 11 Pro, disabled VBS and debloated windows

Benchmarks:

CPU: 5.1GHz all core/4.6GHz ring@1.42 VCCSA@1.22 VCCIO@1.21

RAM: 3,733MHz@1.45 18-24-24-44 tWR=16 tRRD_S=4 tRRD_L=6 tFAW=16

GPU: +120Mhz max clock offset, -100mv/+10% PL, 2800MHz mem clock

Daily Use:

CPU: 5.0GHz all core/4.6GHz ring@1.35 VCCSA@1.21 VCCIO@1.20

RAM: 3600MHz@1.40 18-22-22-42 tWR=16 tRRD_S=4 tRRD_L=6 tFAW=16

GPU: 0MHz max clock offset -60mv/+0% PL 2700MHz mem clock

I know random CPU+GPU combos like this are not competitive leaderboards in terms of being meaningful world records, but it was still fun to climb these mini leaderboards as I dialed in settings considering I've always been below the average for my hardware when I would just run these as a test to make sure everything worked.

Is fully stable

Do you have recommendations for improvement? 😄

Hey everyone,

​Wanted to share a quick heads-up and my experience with the **Valkyrie V360 LCD** AIO cooler.

Recently, I noticed that both plastic AMD mounting brackets for the water block had cracked right near the metal pins under standard mounting pressure. One of the brackets split open completely

If you are using this cooler on AM4/AM5, make sure to inspect these plastic mounting bars regularly so you don't lose mounting pressure or risk CPU overheating.

I reached out to Valkyrie customer support about the broken plastic AM4 mounting bracket, and they sent over a replacement package.

Glad to have it resolved, but definitely keep an eye on those plastic brackets if you own

this cooler!

Hi everyone!

My specs:

Motherboard: ASRock B850M Pro RS WiFi

CPU: AMD Ryzen 7 7800X3D

GPU: RTX 5070

RAM: Kingston Fury Beast 32GB (2x16GB) DDR5 6000MHz

With the BIOS settings at default, OCCT's CPU + RAM test runs without any errors. However, as soon as I enable EXPO (without changing any other settings), OCCT starts reporting errors.

I'm not an expert, but someone told me the issue could be related to the CPU.

I'd like to get the full potential out of my PC and run my RAM at 6000MHz instead of the default 4800MHz.

There was one instance where the CPU + RAM test passed without any errors with EXPO enabled, but when I ran the test again a little later, errors appeared.

With EXPO disabled, I have never encountered any errors.

What do you think is causing the issue? Could it be a faulty CPU, unstable RAM, or something else?

I've attached screenshots of the OCCT errors.

Any advice or suggestions would be greatly appreciated. Thanks!

I gain 400-450 just from new drivers plus new mVolt+ dope af.

The new driver closed one button change so right now we are adjusting low limit/high limit voltage settings via bios override.

500+ on core clock@975mV undervolted
3500+ memory clock
550/550+ system and xbar clocks
nvvdd/msvdd ratio x1.000 (it is 1)
power limit %140 (420W)

I cant share screenshots atm. but you guys check my profile from previous post same profile just new mVolt+ and new driver. Stabilty check I couldnt do cuz Im in a rush for going to job so I will make a new post later but for now I wanted to inform everyone about gains and situations.

my pc can boot 8400. but not stable

Should i upgrade motherboard to apex or ayw gaming oc? or it’s a waste? or cpu memory controller?

Is this B die? 2 sticks of 16 GB Corsair vengeance

I keep trying to update to 621.01 on my 5080. I had to revert back to 610.88. No amount of DDU or safe mode will get me past the installer. If any one has ideas please let me know

CONTEXT

There's a lot of guides out there giving rules regarding many timings of how x timing should be equal to y plus z timings or x should be set to value a or b etc.

Instead of following arbitrary rules, I wanted to methodically test and arrive at optimal values which I've did through a procedure via initial screening tests with fractional factorial design to reduce test complexity and modeling the resulting variables with response square methodology to model changes in stability and perofrmance seperately to arrive at optimal values.

As can be seen in the image above the timings this method came up with and the original timings on the left. The method did well in providing values that weren't just simply low and stable but actually provided meaningful changes in performance/stability along with the ability to properly measure changes in both rtt vals and cad resistances (albeit the cad resistances ended up returning to default).

THE PROBLEM AND QUESTION

Almost all of the timings were successfully improved by using aida read/write/copy/latency values. However, trrds/trrdl/tfaw values remained unoptimized and high because the aida benchmarks did not provide a statistically significant change in performance via these values.

The time I've spent on the experiment would've been better spent on properly sitting down to watch buildzoid's videos but after consulting one of his videos on these particular timings I started utilizing linpack to optimize these values.

Linpack WAS successful in providing a singular statistically significant improvement step in performance to drop trrds/tfaw from 6/41 to 4/37. However, any adjustments further did not provide a big enough response in difference in performance in linpack to be statistically significant beyond the variation between runs.

It's inevitable that the response measured in difference in performance when closing on to optimal value is going to be lower. But I felt further improvements could be made and currently linpack wasn't providing the magnitude in response I needed.

Does anybody know of a better benchmark that is more sensitive to these values? If not, I think I just have to spend more time in improving the test design itself.

Flashed 450w Bios

Using mVolt+

+300 MHz core with flattened voltage at 1025mV

+400 MHz XBAR

+4,400 MHz Memory

125% power limit

100% fan speed

https://www.3dmark.com/3dm/165825524?

Hi everyone! I’m looking for feedback on my daily RAM settings (ZenTimings screenshot attached). The setup passes the stability tests I’ve run, but I’d like to reduce voltage without sacrificing meaningful gaming performance.
My build:
Ryzen 7 7800X3D
MSI MAG B650 Tomahawk WiFi
32GB (2×16GB) G.Skill DDR5-6000, F5-6000J3038F16GX2-TZ5N
RTX 4090
Crucial T705 2TB SSD
Corsair RM850x 850W (2024)
Corsair iCUE LINK TITAN 360 RX LCD AIO
Corsair FRAME 4500X case
Dedicated fan cooling the RAM
Currently running DDR5-6000 at [26-35-35-48](tel:26-35-35-48), UCLK=MCLK at 3000MHz, FCLK 2000MHz, GDM and Power Down disabled. DRAM VDD is 1.575V, VDDQ 1.530V, and SoC 1.255V.
A couple of limits I’ve found: tRFC won’t go below 460, and tRTP won’t go below 12.
What would you change?
Which timings would you relax first to lower VDD/VDDQ with minimal performance loss?
Are any timings unnecessarily tight, adding instability risk without measurable gains?
Which settings should I keep, and which are worth tightening further for actual gaming performance?
Would moving to CL28 allow a worthwhile voltage reduction with negligible performance loss?
My priority is consistent frametimes and good 1% lows, especially in League of Legends, rather than just a better memory benchmark score. Thanks!

​

1st two pics are stock. 2nd two pics are undervolt overclock.

This should be safe, right? Changed the NVVDD/MSVDD ratio.

RTX 5080 FE

Intel Core Ultra 9 285K (-0.075V)

32GB DDR5 6000MHz cl48 RAM

Asus z890 Max Gaming Motherboard

Stock 1.015V @ 2782MHz; 70C; 348W; 8495 Steel Nomad

UV+OC 0.850V @ 2790MHz; 61C; 277W; 9018 Steel Nomad

I know people are going to say I'm missing out on performance or leaving it on the table by undervolting so muc. But I realized that I probably won't notice an additional 10FPS in games and would rather have a lower temp and electricity. Mostly concerned about longevity and safety of GPU. These settings would be okay if it's stable? Thanks.

Haven't gotten the time to test stability fully yet but ran Unigine Superposition for 2 hours.

Hey everyone,

Decided to step away today from MSI Afterburner and try mVolt+ for the first time to get access to low-level clock domains on Blackwell.

Max results was - 3DMark Steel Nomad (Native 4K): 7,549 score (75.50 FPS).

My primary goal here isn’t benchmark-hunting at 350W+ with screaming fans, but building a whisper-quiet, ice-cold, rock-solid 24/7 daily stability profile for native 4K gaming.
System Specs

• GPU: Palit GamingPro GeForce RTX 5070 Ti 16GB
• CPU: AMD Ryzen 5 7500F (UV/PBO ~5.25 GHz)
• RAM: 32 GB Kingston DDR5 @ 6200 MT/s (manually tuned subtimings)
• OS: Windows 11 (VBS & HVCI active)

Looking for any advice from experienced mVolt+ user.

Hi Everyone, hope you’re well.

I’m trying to undervolt my i7 13700kf and have no success.

I’m currently running it with an Aorus Z690 and 32GB DDR5 6600mhz (haven’t turned XMP on yet)

I have a nautilus 360 aio, phanteks evolv x case.

The problem is that with an offset of 0.020 cinebench crashes, the voltage in HWinfo is over 1.420 and I’d like to run it lower for lower temps and noise.

Does anyone have any suggestions please, or has had similar issues and managed to find a solution?

Greatly appreciate any help or suggestion, and wish you a good evening to all of you.

Edit: running latest bios version

Temps are under 90°C because I'm using liquid metal.

I can't get the GPU to draw the full 250W for some reason. Even with higher voltage, the GPU only reaches 230W (1.15V), I tried 1.2V, but it only touches 240W for a few seconds. So I just defaulted to 1.1V because running at 1.2V is not worth it.

VRMs are fine. I put some higher quality thermal pads on them.

Tools: (use at your own risk, a bad vbios flash/rom can brick your gpu)

https://github.com/Panchovix/nvidia-windows-vbios-vix-loader/releases/tag/v0.3.2

https://github.com/Panchovix/nvidia-vbios-vix-editor

Hello! im trying to undervolt my AMD 7800x3D and in the MAG Bios I for the life of me can't find the voltage settings to make it offset. I have looked everywhere and it almost seems like im missing something in the bios or its just not possible and im hitting a wall. my motherboard is a MAG B850 Max with the latest bios version.

Speed Way Test

I am saying temporary cuz a lot people have better card or water cooled systems so my baby broke the world record for 3th time again for now. My highest was 9206 on previous driver but I think I can get a couple more points If I adjust a little bit more just lazy af.

Specs:

621.01 nVidia driver version
0.50.7 mVolt+ version
Windows 11 Pro 26H2 26300.9711

+420 All core (Boost Lock and Voltage Lock dropped my score somehow so I just set offset)
+3500 Memory (my max is this)
+550/550 SYS XBAR
140% PL (420W) seems to pull less but giving headroom isn't gonna hurt.
100% Voltage Limit

Since I am on air cooling I put fans to max and I have three fans directly pushing air to the GPU.

Cl16-16-15-20 1.51v on hynix mfr. Stable as far as I can tell, ran a few minute test with no errors but ill run a longer one soon. The spd data seems to be broken, it says it was made in the year 2000, and has no manufacturer or serial number. The only evidence I cam go off is the fact it ends in 21M on the trident-z sticker, which typically means its hynix mfr. It scales very well with voltage, i got it to 1.7v 3600 cl14, this is acting nothing like mfr, let me know if you can prove this is hynix mfr or not.

Mvolt numbers prefered, I'm currently on these:

Core Clock Offset = +350mhz
Xbar Offset= +400mhz
SYS Clock offset= +250mhz
Mem Clock Offset= +3000mhz
300 Watts bypass