MSI Afterburner Extended Overclocking

IInuyasha74 · Jun 12, 2014

Hello Everyone,

I have been using MSI Afterburner on and off for about two years now. I currently use it on my laptop and desktop. Love the program, anyways, on to the point.

My laptop has a slow Nvidia GT 620m 1GB DDR3 with only a 64-bit memory interface. I used MSI Afterburner to overclock it.

Stock speeds:
Core: 625Mhz (Boost 725 but it never actually boosted. Never)
RAM: 900Mhz

Overclocked:
Core: 788Mhz
RAM: 1080Mhz

So far this has given me about 20% boost in performance going by benchmark tests I have done testing average FPS. What I am wanting now is to go further. I know the RAM is topped out, I tested it at higher and couldn't keep it stable.

The max limit for the Core overclock on the 620m is 788 Mhz and I hit that with what seemed like great ease. No voltage increase or anything. Temps get a little high, up to 75C, but they ran about 70-72C before the overclock. I am trying to find a way to extend the overclocking limits so I can go for 800Mhz or higher on the GPU core.

Anyone know how I might be able to do this?

Thanks in advance.

mrgnex · Jun 13, 2014

Enable all the voltage related settings in MSI AB.
So enable:

-Enable hardware control and monitoring
-Enable low-level hardware access (set it to kernel mode)
-Restore settings after suspended mode
-Enable voltage control (Extended MSI)
-Enable voltage monitoring
-DO NOT ENABLE Force constant voltage (DO NOT)
-Extend official overclocking limits

Hope this helps.

IInuyasha74 · Jun 13, 2014

Thanks but already have all that. Its a laptop so voltage is fixed constant, can't change it. The extended overclocking limits got me to 788Mhz but I want to extend those further cause it went so easy and has had no signs of instability yet.

Thanks for your time replying though, most of my inquires on this site go unanswered.

mrgnex · Jun 14, 2014

IInuyasha74 :

I know that feel bro. But I might have another idea

Have you tried other overclocking programs such as Trixx or ASUS gpu tweak? Maybe those programs enable further overclocking.

IInuyasha74 · Jun 15, 2014

Yea used to ASUS GPU Tweak got me furthest, but it had stability issues with my system and I used MSI Afterburner for monitoring. Then with the newer versions of MSI Afterburner like 3.0 they have done the same thing as GPU Tweak, it performs a driver tweak which allows you to extend further. Unfortunately they stop at the same place though.

However I am very happy now my problem as been solved. I had tried Nvidia Inspector before but it failed to work, and then someone on the Afterburner Forum on guru3D came back telling me to try it again, and I managed to get it working. Now I can overclock with endless limits! Not as nice as being able to just use Afterburner but hey it gets my GPU topped off so I am happy

Most performance anyone has ever got from a GT 620m.
Core: 860Mhz (Stock 625)
Mem: 1100Mhz (Stock 900)

IInuyasha74 · Jun 15, 2014

Thanks for the helpful suggestions though

guillermo Presa · May 2, 2015

How did you OC the core in afterburn. Ialso have 620m and I overclocked the memory speed but after setting the core to +90Mhz (arround 15% more than stock) it does nothing. I´ve done it same way as the memory (wich actually worked) did you change any voltage or something else??
Even if I pull the clock speed down to 500Mhz it stays in 625.
Just want to OC between 700-725Mhz. And memory up to 1030Mhz.

IInuyasha74 · May 2, 2015

Hello.

Well you will need to confirm which version of the 620M you have first. Because Nvidia can't keep things simple, there are two versions. One uses a 28nm version of the chip with a 64-bit memory interface, while the other one is a 40nm chip with a 128-bit interface. I have the 28nm one, which is held back by the RAM, but it overclocks better and uses less power, so if you have the 40nm you probably won't overclock as far. Just a heads up.

You will need Nvidia Inspector though if you want to enjoy the increase in clock speed. Something about how it works, the actually speed is something like 625 MHz, and anything after that is considered to be a "boosted" clock speed. This mode is supposed to activate when temps are low enough, but that never happens in mine.

To enable the boosted clocks, get Nvidia Inspector first. Then create a notepad file in that folder. Put this inside of it:
"nvidiainspector.exe -forcepstate:0,0"

Without the quotation marks. Save the file as "Overclock.bat". Then you can double click this file and it will run like a program and force the GPU to run at the max speed always. After that you can use MSI Afterburner or Nvidia Inspector to overclock, I prefer Nvidia Inspector cause it lets me overclock further. I run at 865 MHz core and `1085 MHz memory usually.

Also after you are done gaming you will need to create and run another batch file:
"nvidiainspector.exe -forcepstate:0,8"

Name this one "Idle.bat". If you don't run this after gaming your GPU will stay at full speed even when not in use and drain your battery faster.

Hope that helps.

guillermo Presa · May 3, 2015

I have already installed the Nvidia inspector created and the batch files, but it won´t let me change the core speed neither voltages, just the Memory clock and the Shadder clock. Well by changing the shadder clock it changes also the core clock so I am ok for now.

Another question. If I limit the fps will I make the GPU more stable so it won´t have many fps drops??
Thanks. You know a lot about GPU.

IInuyasha74 · May 3, 2015

Good job getting the batch files setup

Right, in this architecture the texture shaders are locked at double the core speed. That is why you cannot adjust the core speed, it just lets you change the shader speed and that changes the core speed at the same time. It will work out don't worry.

I haven't seen any way to increase voltage unfortunately, though I would be a little worried about doing so anyways. The core voltage does increase some when you use the batch because the turbo-mode settings are enabled so that gives a little extra overclocking room.

Limiting FPS won't help so don't worry about it. It might be more stable if you did that if it is runninag at less than 100% usage, but that would defeat the purpose of overclocking it so you might as well run it at full speed, probably should keep V-Sync off always as this GPU is a bit old now. I only use V-Sync with it on games that are about 10 years old.

guillermo Presa · May 4, 2015

Thank you really much for all your help.
I think I won´t let the fps pass 30 althought I normally have less than 27 If in good conditions they go up to 35 or so and then I have to charge some new particles or textures it might have a big drop. I hope it will avoid some drops.
:bounce:

IInuyasha74 · May 4, 2015

Your welcome, I am happy to help.

To tell you the truth, I actually prefer laptop GPUs like this because they can gave for over an hour on battery usually, a lot of other laptops with dedicated GPUs have trouble with this. Plus I love older games so it works well for me.

One more thing though if you are working on getting better performance, you should almost always leave AA, AF, MXAA, MSAA, and similar graphics settings off. This GPU has a slightly different architecture than general Fermi designs, and only has 4 ROPs total. These handle the processing for any and all AA, AF, MXAA, MSAA etc and can cause big performance drops because this card isn't set up for it. However, if you disable it your performance should increase greatly.

For newer games with this system, I normally play with higher quality textures and depth of field on, but keep AA, shadows, and some other extra features off. Using these settings I got Bioshock Infinity and Tomb Raider playable at 1366x768 resolution after the overclock. Doesn't drop too bad. Then 2011 and older games for the most part I can play high settings if not maxed out settings. There are some exceptions but most work well.

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