I have had this laptop for approximately two years now and still going strong! I've spent a lot of time tweaking and messing with different settings for this laptop, and to spare everyone else from all the research, I have put together this guide to make it a little easier. These are the tweaks I have made to ensure the best possible performance on my laptop.

Specs:

Legion 7i 15IMH05

CPU: i7-10750H

GPU: RTX 2060

Before we start off, the importance of a cooling pad is stressed. I am currently using the IETS GT500 cooler, which reduced temperatures by 10 degrees Celcius. If you don't have a cooling pad, even raising the back of the laptop a little bit can do wonders, as these laptops are known to run hot!

1) CPU TWEAKS - Undervolting:

Undervolting decreased my temperatures by about 7 degrees Celcius. Even if you do not see any decrease in temps, your CPU would be able to be more efficient and boost higher for longer periods of time. This leads to increased performance across the board. Before undervolting, my CPU would throttle down to 4000MHz due to thermal throttling. Now, I can run 4300MHz indefinitely, with lower power consumption and heat.

- Software needed - Throttlestop, Cinebench, ISLC

a) You will need to go into advanced BIOS, go under CPU options, scroll all the way to the bottom, and disable CFG lock as well as CPU Overclocking lock (may be different if you are on a different BIOS. Search this up on the internet).

Disclaimer: According to u/kokuryuha34, 12th gen CPUs have voltages locked; only the HK CPUs are capable of this. You may be able to unlock the voltages VIA BIOS flash, but I don't recommend this. Do this at your own risk.

b) Start up Throttlestop, you will get a warning prompt. Do not worry, this is completely safe.

c) Head into Options.

• Check Battery Monitoring, Start Minimized, Nvidia GPU.
• Head on over to PROCHOT Offset, and check it. Put in 0 (this ensures that the CPU can run up to the temperature of 100 degrees Celsius without throttling, which is completely safe). If you are uncomfortable with this value, I recommend reducing this value from the default of 6 to 4. Check Lock PROCHOT Offset.
• Head over to Profile Names. I have created 4 profiles which allow me to control and specify how the CPU thermal throttles
  • Rename them Performance, Downclocked, Failsafe, and Battery
    • If you would like to create profiles that automatically switch when plugged in or on battery, Throttlestop allows you to do that. Check AC profile, and Battery as you wish, and put the number in which the profile is. In this case, my Performance profile is 1, and my Battery Profile is 4.
    • You can also plug in a low battery % and profile if you wish
• Head over to Alarm, and check it. This allows us to control thermal throttling, which will be explained later.
  • Set the first box after Use Profile to 2, and the next box to 3.
    • I have set DTS to 2, which is the amount in degrees Celcius from the PROCHOT OFFSET that the CPU starts to thermally throttle. This means that Profile 2 will be used when my CPU reaches 98 degrees Celcius.
    • GPU °C is set to the temperature that the GPU thermally throttles, which is 85°C. This means that Profile 3 will be used when the GPU reaches 85°C.
• Click on OK. We are done with this section!

d) Looking at the Throttlestop GUI, check Speed Shift EPP and ensure that the value is 0 (for max performance). Uncheck BD PROCHOT and Speedstep. Do this for the Performance profile, as well as the Downclocked and Failsafe ones.

• To ensure that Speed Shift is working, head into TPL
  • Check the Speed Shift box, Apply, and OK.

e) Head on over to FIVR. Follow this guide to undervolt. I was able to get both -131.8 mV stable on CPU Core and Cache. Every laptop will have different values, this is based on trial and error. Uncheck Thermal Velocity Boost (this will throttle your CPU when it is above 70°C.

• Increase IccMax to max (255.75) for both core and cache. Uncheck Unlock Adjustable Voltage. Start at -0.50 mV. Slowly make your way down by -0.10 mV after every 960M single and full core tests. If you blue screen, don't panic. Just restart your laptop.
• Once you have reached a value that runs through TS Bench with no errors, run through a couple of rounds of Cinebench Single Core and Multi-Core benchmarks. If it doesn't crash, you are good to go!

f) Apply this to all profiles. Head back into FIVR and reduce Turbo Ratio Limits by one or two ticks for the Downclocked Profile. This will reduce your clocks a little bit with little to no performance loss while thermal throttling . If you are still uncomfortable with temperatures after this, you can do this for the Performance profile. I have reduced clocked on my Downclocked profile by 2 ticks, and the Failsafe by 4. Luckily, I do not thermal throttle anymore after undervolting, so I don't have to worry about this. (This will allow your CPU to throttle to the speed you have set under Turbo Ratio Limits for the Downclocked profile when your CPU reaches the DTS under Alarm. In my case, when my CPU reaches 100 °C, it is throttled down to 41 GHz until temps are okay again, then switch back to the performance profile).

g) Follow this guide to have Throttlestop automate and run on startup without you having to open it up every time.

If you are still thermal throttling and/or unhappy with your temperatures, and are okay with opening up your laptop, you can look into repasting with Honeywell PTM 7950 (the best thermal paste for this laptop).

OPTIONAL:

1. Battery Profile

• The only difference here is Speed Shift EPP is 180, and Disable Turbo is checked. Undervolting should also increase Battery life!

1. Disable CPU Power Limits in Throttlestop if you’re not thermal throttling. You can do this by by clicking TPL, click the Lock the MIMO box, and set Long Power PL1 to the same value as the Short PL2. If you want to get rid of power throttling altogether, set PL1 and PL2 limits sky high. 
2. If you would like more performance in terms of CPU using AVX instructions, you can undervolt the core more than the cache. In my case, I found that it made my system more unstable (TS Bench started spewing out errors) and I had to lower the cache undervolt, by a considerable amount, so I just left them the same. In some laptops, you can undervolt the core about -100mv more than the cache, in some cases, I've seen people able to double their core undervolt when reducing cache undervolt. I found that the cache undervolt did more than core to mitigate temps, so my goal here was the max stable cache undervolt; I just set core to be the same. If core undervolt was increased, I started getting errors and crashes. Do this at your own risk!

>!This process yielded an increase in Cinebench R23 from 7350 to 7830 in Multi-Core, and Single Core from 1174 to 1245.!<

h) Download ISLC (This will remove stutters in game by cleaning your ram)

• Check Start ISLC minimized and auto-Start monitoring
• Check Launch ISLC on User logon. (TaskScheduler)
• In the Free memory is lower than: box, put in half of your ram. In my case, I have 16GB. Half of that is 8GB. 8GB x 1024MB = 8192. This is the value that I will put in.
• Check Enable custom timer resolution, under Wanted timer resolution, put in 0.50, and click start.

We are now done with tweaking our CPU for better performance and reduced temperatures!

2) GPU TWEAKS - Overclocking

For max performance, ensure that the Discrete Graphics option is selected in BIOS! (u/EVH4N)

Unfortunately, MSI OC Scanner doesn't work with these GPU chips. If it does, go ahead and use Afterburner instead! Luckily, there is another software that does if Afterburner's OC scan doesn't work, and the profiles transfer over to MSI Afterburner. On laptops, overclocking is basically undervolting due to the GPU being power limited. I suggest always updating to the latest drivers, and using DDU to ensure a clean installation of new drivers.

Software needed - ASUS GPU TWEAK III, MSI Afterburner, 3DMark

a) Download ASUS GPU Tweak, go ahead and click on OC Scanner. Max out Voltage Limit, Power Limit, as well as Temp Limit. MSI Afterburner will not allow you to do this, but the settings will transfer over. Start the scan, it should take about 30 minutes to complete.

• When the scan finishes, save and apply the curve. Close out of the application, and open MSI Afterburner. Now, we have a baseline overclock to start with.
  • Ensure that the v/f curve is actually applied, and save it as a profile in Afterburner. Close out when done.
• Go back to ASUS GPU Tweak, set it back to the Default profile, and uninstall GPU Tweak. Restart your computer after this!
• b) Use the base OC that was just scanned and run it through 3DMark Time Spy and FireStrike test. Increase the frequency of the core clock by +15MHz increments until the benchmark freezes or crashes. This is your most stable overclock. I found that the OC Scanner did a pretty good job at this, any higher, and it was unstable.
• Next, head on over to the memory clock. +400MHz is a good place to start. Increase this in 100MHz increments until you start seeing artifacts and/or get a crash. Then, back off the memory clock by 50MHz.
  • If your score starts dropping when increasing memory clocks, this means you're pushing it too high, and error correction is kicking in. Back off the memory clock until you get the maximum score you can get without error correction.
• If you'd really like, you can undervolt to decrease temperatures. Open the V/F curve, select the voltage which you would like to undervolt at, hold down shift, highlight all the points to the right of that voltage, and slide it down to or below that point on the voltage. This will prevent the GPU from exceeding the voltage point that you have set.

>!I was able to get an average of +206MHz overclock on the core and +900MHz on the memory. This process increased my 3DMark Time Spy score from 6592 to 7543, and my Fire Strike score from 16037 to 17517. Like the CPU undervolt, these overclock values will be different for everybody. All trial and error!!<

TIP: If you are on the new Nvidia Game Ready Driver (527.56), you might be able to adjust the Power Limit %. If you are, slide it all the way up to the max! (In my case, it was 137%, which allows the power limit to be 110W). At 100% with my overclock, my average GPU clock ran between 1500-1750MHz, but with the increased power limit, I was able to push my card to run around 1800-2000MHz. (Proven to be a visual bug by u/Legion070Gaming. Regardless, don't be afraid to push it all the way up to the max if it is available. The default value should already be maxed out).

Although this whole process requires a lot of time in terms of stress testing to ensure stability, it was incredibly worth it! My 0.1% and 0.01% lows as well as framerates have increased by a noticeable amount, and my CPU and GPU are both running more efficiently (not to mention, more quietly), and my laptop is running much better and stutter-free. These machines are absolute beasts.

FINAL TIPS (Legion Specific):

• Use Lenovo Legion Toolkit rather than Lenovo Vantage... It gives you the same control (+ more) without the bloatware of Lenovo Vantage.
• Uninstall iCue, it uses unnecessary CPU and GPU resources
• Download LegionFanControl for thermal fine-tuning. I was unable to use this due to compatibility reasons with my BIOS, but I've heard great things and it doesn't hurt to give a try.
• Enable Battery Conservation mode if you're mostly plugged in. This ensures that your laptop doesn't wear itself down over time by constantly charging.
• Use Fn + Q to cycle through performance profiles. For Max Performance, ensure that the light on the power button is lit up red.
• You can extend battery life by capping CPU limits for different power plans. Steps are
• Battery life can be extended by capping the CPU limits for different power plans. Steps are here. (Credit to u/tanuj_dargan for this info!)

Hopefully, this guide helps someone out. Let me know if I missed anything! If anyone has any questions, feel free to ask. Enjoy the extra free performance!

[THIS POST WILL BE EDITED AND REVISED FOR CLARIFICATION AND ADDITIONAL INFORMATION]