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My Nvidia GeForce GT740M Overclock specs & questions (With Pics!)

post #1 of 5
Thread Starter 
Morning, I am new to the forum and new to over-clocking. I just recently purchased a new gaming rig, and I am very happy with my purchase. I plan on playing many new games such as Guild Wars, Elder Scrolls, Battlefield, etc. Here are the base specs for my computer:

HP ENVY 15.6" aluminium notebook
12 GB DDR3 RAM
1 TB 5400RPM HDD
Intel i7 4700MQ - 2.4 GHZ (3.2ghz turbo mode)
Nvidia GeForce GT740M - 2GB Dedicated

For over-clocking I downloaded the utilities:

- MSI Afterburner
- GPU-Z

Here are my baseline specs:


Here are my overclock specs:


Here is a shot of my monitors while under heavy video load:


The highest temperature that i have achieved under heavy load is 73 degrees celsius. The computer and applications ran very smooth and stable, and i got an increase of 15-30 fps on average in Guild Wars 2.

Now for the questions!

Being new to overclocking, I have limited knowledge of what is safe and what is not. I have been doing my best to research the maximum safe limits of the gt740M but information seems very scarce. I also have only been able to find 1 article by a fellow on this website who over-clocked the same card. I used his build as a baseline, but I kept my numbers much lower because he reported experiencing video glitches which seems very unsafe.

What is the maximum safe, reliable, operating temperature of my video card?

What other vitals should I monitor while over-clocking to ensure that I am not doing any harm?

Can i clock it up more?



Thank you very much for your time reading my post. I look forward to any feedback . Have a nice day.

- Cyan
Edited by Cyanthium - 3/19/14 at 6:57am
post #2 of 5
Thread Starter 
Update:


While playing Skyrim on Medium-High settings the game froze after about 25 seconds, nothing responded for about 10 seconds then i got the new improved windows 8 blue screen, complete with a happy face.

Here is the CPU-Z log moments before the crash:


I am not going to play Skyrim until I hear back from a pro. In the meantime I clocked back down:



Are my previous specs too high? or could it just be the graphics settings in game were set to high?
post #3 of 5
I have the same card with 1GB DDR3 version. You can increase the GPU Core Clock to +135MHz and Memory Clock to +230Mhz. Don't push Memory Clock further, because when I tried I got artifacts.
Use nvidiainspector for overclocking, its much clean and simple.
post #4 of 5
Thread Starter 
Could I have crashed because of running 1080p? The card supports it but I know it runs best on 720p
post #5 of 5
Thread Starter 
I know there are some pros out there who can shed some light. I have been researching to the nines, but I cannot seem to find the maximum stress limits for clock speed, memory clock, and temperature. If I knew that information I could figure out everything I need to know with testing and monitoring.
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