Overclocking i7-3740QM CPU

Hi all,

I need your advice. I want to overclock my CPU so that it can run Watch Dogs when its released. So far i read the forums and downloaded software such as Intel XTU and Throttlestop but to be honest I don't really know what to do to get the best out of the CPU. I currently have a Clevo P170EM with 16BG RAM and NVIDIA GTX 680m (which i also want to OC).

So far i have increased the multipliers to 41, 40, 39, 39 (all maxed) but with regards to increasing TDP etc, i don't really know where to start or even if its required.

Any help is welcome and if you can provide like a step-by-step guide, that would be awesome!

Thank you all who view or comment for your time.

 

You cannot change the TDP of a qm CPU like you can on a xm, you have an extra four multipliers available on the 3740 qm if your BIOS allows it, but that is all, there is nothing more you can do.

 

thanks for your reply tijo.

Ive noticed that the changes to the multipliers only has impact when the Intel Turbo is active which is only for 28secs. After that I see that it changes from 3.8GHz (4 cores OC'd) to 3.5GHz (stock). Is this normal? Is there anyway to keep the cpu at 3.8GHz? What is the point of the 28sec turbo boost?

 

oh i have another question....

I have Throttlestop running and my cpu is fluctuating all over the place, why is that? Why isnt it stable at 2.7GHz non turbo?

Thank you for answering.

 

Have you ticked "Set Multiplier" box?

 

Why lock the CPU at a given multiplier when not using it fully. You might as well let the CPU handle itself to save on heat generated and power used. When you need it, it will clock properly anyways. It is normal for CPU clocks to be all over the place under light usage, it will stay at low clocks and power states that generated less heat/use less power. When it is needed, it will change power states and ramp clock speeds accordingly. The only time I'd use the set multiplier function is when overclocking.

 

Using the ThrottleStop - Set Multiplier feature and setting that to the maximum value is not as bad as one would think. I have never been able to measure any power consumption penalty while doing this.

If Windows is set up correctly, individual cores will automatically enter one of the low power C States like C6 where power consumption approaches zero. Here's an example I posted in the ThrottleStop Guide thread.

http://imageshack.us/a/img850/8943/bynx.png

When a core is asleep in C6, it doesn't make any difference what multiplier it is using because the core is drawing zero power. A 10 multiplier instead of a 20 multiplier means the CPU will be drawing half as much power but half of zero is still zero. When the CPU has something to work on, it's best to get the CPU back up to full speed immediately. This gets the task done as fast as possible which allows the CPU to get back into the low power C6 State sooner. Maximizing C6 or C7 residency time is the best way to minimize power consumption and heat. Reducing the multiplier is old school. On modern CPUs, a low multiplier makes your CPU slow but doesn't really accomplish very much. Intel CPUs are very efficient if you let them operate as they were designed.

Here's an interesting explanation from some smart guys at Berkeley.

Power Optimization – a Reality Check
http://www.cs.berkeley.edu/~krioukov/realityCheck.pdf