- last edited on by
ROGBot
WARNING! Image Heavy!
Hey, everyone.
I recently purchased this beauty of a machine - a G751JY. (i7-4710HQ, GTX980M, 8GB DDR3L, BIOS 205)
After rummaging around the forums and with you guys' help (thanks to ASUS Support as well) I have managed (for now) to get some extra juice out of the already almost unnecessarily powerful 980M using GPU Tweak for Graphics Cards with the 344.75 drivers.
Yay! This is just the +135Hz standard overclock and the memory running at 6000MHz effective. I haven't seen if it would go up but from what I've seen I should be able to hit 6400MHz no problem.
So that being done, I think it's appropriate to talk about the CPU...
Especially considering that I can imagine a fair few circumstances where the CPU would hold down this beastly GPU.
So, what does HWINFO86 tell my uneducated mind about this processor:
Okay, so I did some basic research and from I understand, this information tells us that this CPU can take 2 extra frequency multipliers - so technically, I should be able to get a free 200MHz overclock! That is significant on a mobile machine with the thermal headroom and the G751 is definitely that.
Okay, so I loaded up Intel Extreme Tuning Utility and noticed that the clock multiplier can be pulled up but only by a factor of 1...huh. Okay so our new multis are 36-35-34-34 and a cache multiplier of 36. (Worth noting that I'm a complete noob when it comes to overclocking.)
So I applied the settings and ran a benchmark to see what would happen.
Odd... the CPU hit 3.4GHz only once for a split second. I determined that, obviously, XTU stresses all 4 cores for this benchmark.
Looking down we can see something more odd - the CPU is being starved for current by XTU! I guess this is how XTU stresses the chip? I truly have no clue. However, my non-OC brain thinks that XTU does this to determine how effective the CPU is at blasting calculations when deprived of "food", which WOULD explain the lower clocks.
Moving on - I loaded up ThrottleStop because of its simple and effective threaded benchmark so that I could test individual cores.
This time, there is no throttling of any kind. We see that a single threaded test mostly works the CPU to about 3.4GHz, rarely peaking to 3.5GHz. XTU reports only 1 core being active. This is very odd. So we've set the multiplier to 36 for 1 core, the CPU has enough current but it barely makes 3.5GHz? Throughout my testing I have never seen this CPU go above 3.5GHz.
Next, 2 threads.
Hmm...same results. The CPU peaked at just over 3.5GHz - but this is expected as our 2-core multiplier is set to 35. But it rarely reached that speed. XTU jumped between 1 and 2 cores.
A solid 3.4GHz for 4 threads for a multiplier of 34 for 4 cores active.
Okay, so let's look at the benchmark results.
Again, we can see here that XTU starves the CPU of current and the CPU struggles to keep up at 3.1GHz.
The result:
No idea how this stacks up.
Now with the tweaked multipliers:
Throttling again, but this time it's a steady 3.3GHz.
Results:
...What? Same results? What's happening?
This is where I am stuck. First, as I understand it, the CPU should be able to do 3.7GHz. Second, it doesn't even do 3.6GHz through XTU. This is where I'm hoping some OC savvy people will jump in. Do I need to tweak something else to get an actual overclock out of this CPU? Could it be that ASUS has changed how the CPU behaves and limited the multipliers through the 205 BIOS release? And I'm not liking the dips on that blue curve down in the left corner...
Any and all feedback on the process and any discussion is welcomed and encouraged!
Hey, everyone.
I recently purchased this beauty of a machine - a G751JY. (i7-4710HQ, GTX980M, 8GB DDR3L, BIOS 205)
After rummaging around the forums and with you guys' help (thanks to ASUS Support as well) I have managed (for now) to get some extra juice out of the already almost unnecessarily powerful 980M using GPU Tweak for Graphics Cards with the 344.75 drivers.
Yay! This is just the +135Hz standard overclock and the memory running at 6000MHz effective. I haven't seen if it would go up but from what I've seen I should be able to hit 6400MHz no problem.
So that being done, I think it's appropriate to talk about the CPU...
Especially considering that I can imagine a fair few circumstances where the CPU would hold down this beastly GPU.
So, what does HWINFO86 tell my uneducated mind about this processor:
Okay, so I did some basic research and from I understand, this information tells us that this CPU can take 2 extra frequency multipliers - so technically, I should be able to get a free 200MHz overclock! That is significant on a mobile machine with the thermal headroom and the G751 is definitely that.
Okay, so I loaded up Intel Extreme Tuning Utility and noticed that the clock multiplier can be pulled up but only by a factor of 1...huh. Okay so our new multis are 36-35-34-34 and a cache multiplier of 36. (Worth noting that I'm a complete noob when it comes to overclocking.)
So I applied the settings and ran a benchmark to see what would happen.
Odd... the CPU hit 3.4GHz only once for a split second. I determined that, obviously, XTU stresses all 4 cores for this benchmark.
Looking down we can see something more odd - the CPU is being starved for current by XTU! I guess this is how XTU stresses the chip? I truly have no clue. However, my non-OC brain thinks that XTU does this to determine how effective the CPU is at blasting calculations when deprived of "food", which WOULD explain the lower clocks.
Moving on - I loaded up ThrottleStop because of its simple and effective threaded benchmark so that I could test individual cores.
This time, there is no throttling of any kind. We see that a single threaded test mostly works the CPU to about 3.4GHz, rarely peaking to 3.5GHz. XTU reports only 1 core being active. This is very odd. So we've set the multiplier to 36 for 1 core, the CPU has enough current but it barely makes 3.5GHz? Throughout my testing I have never seen this CPU go above 3.5GHz.
Next, 2 threads.
Hmm...same results. The CPU peaked at just over 3.5GHz - but this is expected as our 2-core multiplier is set to 35. But it rarely reached that speed. XTU jumped between 1 and 2 cores.
A solid 3.4GHz for 4 threads for a multiplier of 34 for 4 cores active.
Okay, so let's look at the benchmark results.
Again, we can see here that XTU starves the CPU of current and the CPU struggles to keep up at 3.1GHz.
The result:
No idea how this stacks up.
Now with the tweaked multipliers:
Throttling again, but this time it's a steady 3.3GHz.
Results:
...What? Same results? What's happening?
This is where I am stuck. First, as I understand it, the CPU should be able to do 3.7GHz. Second, it doesn't even do 3.6GHz through XTU. This is where I'm hoping some OC savvy people will jump in. Do I need to tweak something else to get an actual overclock out of this CPU? Could it be that ASUS has changed how the CPU behaves and limited the multipliers through the 205 BIOS release? And I'm not liking the dips on that blue curve down in the left corner...
Any and all feedback on the process and any discussion is welcomed and encouraged!
