Overclocking my GPU

Download and install MSI afterburner.

You should be able to increase the GPU clock speed by about 100mhz, and the vram(memory) by 150mhz. This should be a safe overclock, but see around 10% improvement.

Besides your psu dosent actually give me any confidence and reliability to actually overclock and overvoltage the gpu i can teach you the basics:
Try them and if you experience any performance issues or blue screens revert it back.

To begin with:
Downlod MSI afterburner

Once downloaded you must adjust your fan curve to a more aggresive fan curve to prevent overheating due to overclocking. You can also set the fan to manual if needed

Kay so to begin with you need to adjust a power limit up to 120% then start playing with clocks and the voltage. To have a reliable overclock you should start testing from lower to higher clocks and voltages. Keep a 2/3 clocks per volt relation. For example for 200 extra clocks i would go at +80 mv

+80mv it's an insanely high voltage! i had a stable overclock kept for one entire year with my gtx 960 MSI Tiger OC 4 gb and added 182Mhz on core clock and 201Mhz on vram with just +15mv, but i'm kinda convinced that +13mv was already enough. +80mv will surely fry that vga

i dunno... my titan X consumes waaaay too much so i just tip at whats my average OC profile.

I really wouldnt recommend beginners touching the voltage. You can get good overclocks on nvidia gpus just by raising the power target and and clock speeds.

a Titan X is a damn-high-end graphics card and eats power as hell (well, at least the previous model, the new one with Pascal requires way less than the previous one). a gtx 750Ti is a simple budget graphics card which has a rated tdp of about 120W, there's a huge difference

https://www.youtube.com/watch?v=vMBEo8JMKUk is probably one video you have seen.

What don't you get? MSI afterburner https://www.youtube.com/watch?v=vMBEo8JMKUk let's you overclock. Unigine Heaven http://www.geforce.com/games-applications/pc-applications/Unigine-Heaven-2/downloads allows you to see instability in the form of artifacts which are basically imperfections that the user can see that happen when the GPU is getting unstable. There is the small possibility the PC will crash or freeze. Don't freak out. That happens. Just remember to use baby steps. 80mv voltage bump is not a baby step. The skin used or the style of MSI afterburner doesn't really matter. What does matter are the variables. To put it quite simply you can overclock your core clock by 25MHz and click apply. Meaning you click on the +0 to the right of Core Clock and type 25 and press enter on the keyboard.

Let's recap. You have installed and have Msi Afterburner running. You then started Unigine Heaven. You then Alt+Tab'd(press and hold alt and tapped Tab) and selected AB(afterburner) so that you can see both MSI Afterburner and the running benchie. You just increased that coreclock from +0 to +25(meaning you applied a 25MHz overclock) and press enter. You then watched the looping 26 step? Unigine Heaven bench for a minute or 3. You are watching your GPU temperature and CPU temps. as well making sure they don't get too hot. You then repeat that step allowing a few minutes or so for temperatures to plateau. Make sure you notice what your core clock + number is. Let's assume it said +225 after you had increased it by 25MHz 9 times. You then noticed some oddities in Unigine. You then pull it back by 25Mhz.

You then move on to memory clock and start the process over again with the Core Clock back at +0. Once you find a stable Memory clock you can then reapply your core clock and test for stability again. At this point you then move on to Power Limits and Voltages. This is where the newbie needs to exercise EXTREME caution. You can overvolt only after clicking on the GEAR or SETTINGS button within MSI Afterburner and then checking Unlock Voltage Control and monitoring. Typically speaking voltages should be increased by no more than 25mV increments. Seeing a pattern emerging yet? 25 25 25? Baby steps. But WHY? Why increase the voltage? Those slight voltage increases can make those previously unstable clocks stable once again allow for a SLIGHTLY higher overclock.

Next up is the power limit. That can be moved up to 110%.

Power limit and overvolting aren't for the faint of heart or those not willing to fry their cards. Should you apply an irresponsible overvolt you can end up with a 750Ti paperweight.

Will overclocking shorten the life of your card? Not in any appreciable way. Slightly? Yes. Your card may die in 9 and a half years instead of 8 and three quarters. Or 13 instead of 14 years. You will by that time have upgraded. Overvolting will shorten it even further.


Most importantly you need to watch your temperatures but also the FPS within Unigine Heaven. BEFORE you overclock make sure you know your FPS for the game(s) you want to improve.Play one of your games. Watch your FPS with AB. During the OC watch your Unigine Heaven's HUD to see if the FPS are going up. AFTER the overclock play those games again. Is there an appreciable FPS increase? You might just be increasing the heat. Then again it may be your CPU that is holding back the show. Can that be overclocked? Then again it may be the amount of RAM you have or the configuration.

More like 60w for the 750 ti.

yeah you're right sorry

YOU need to do some work here. Sure, I can tell you to put your core clock at +135MHz and your memory at +325 and it may be stable. It may not be stable. Every GPU reacts differently. Within that YouTube link I mentioned the gentlemen does in fact tell what the highest clocks he made it to.


Simply giving you some numbers to input doen't help you even if you get a stable clock. What happens if you buy another card. A better card? Back to Tom's for the numbers or continue with your present OC and learn. You have done well with the +25MHz with the core. As I said, slowly increase ONLY the core by 25MHz increments. Sure you can increase both by 25 MHz at the SAME time and when it gets stable back one of them off and check for stability again. EVERYBODY that OC's has their own method. You can find your own.

OC'ing your GFX does not guarantee a performance increase. The slow down may be elsewhere.

Give a man a fish and he will eat for a day. Teach a man to fish and he will eat for a lifetime.

I meant to say unstable.

Yes.

The core clock is more important than the memory clock as well. Take a look at factory OC'd cards and you will see they concentrate more of their efforts on the core clock. With today's GDDR5 the memory overclock probably won't net you that big of a performance boost. The memory OC would have more of an affect on older card with DDR3.