4700HQ overclocking

[roryh86]

Greetings.

I thought I'd start this thread with the hope of talking about something positive on this board, as it seems everybody's complaining. I'm happy with my G750JW, I actually love it. Very sleek design, quality materials and quite a beast for its low price. I can't understand all the negativity here to be honest. I haven't noticed issues with my screen, but I plan on replacing it with a AUO B173HW01 V5 anyway, from the reviews I read it sounds very worthwhile for an $80 investment.

Anyway, I've been scouting the internet trying to find any information about Haswell mobile overclocking, specifically our 4700HQ but to no avail. I understand that it will most probably require a modified bios. I don't plan on setting records here but I'd love to see if we can get this thing clocked to a 4800MQ. Would like to hear your opinions on whether this will be possible 😄

[Dr4g0n36]

of course 😄

[Anvirol]

I managed to get -90mV and 34x multiplier on 4 cores. Tested "stable" 5-minute stress test and Cinebench 11.5.

Update:
Well that was unstable. I'm now at -70mV and passed 10 minute XTU stress test.

[roryh86]

Anvirol wrote:
I managed to get -90mV and 34x multiplier on 4 cores. Tested "stable" 5-minute stress test and Cinebench 11.5.

Update:
Well that was unstable. I'm now at -70mV and passed 10 minute XTU stress test.

Ya I had to change mine to -70 mV as explorer was crashing when copying files from external to internal. It's been stable so far after 2 hours of battlefield 3 and few hours computer use. The best test is using your laptop. Mine did fine in stress tests, and then failed at simple tasks. I think this is because stress tests use the lower multiplier as all 4 cores are active, and then when you're using computer for regular use and the CPU chooses the higher clocked x36 multiplier for a simple task, voltage is too low for that high clock, and crashes. Mixed use is best.

Why don't you go ahead maxing out the clocks? Since they're not that high to start with. Have you OC'ed your GPU?

[Anvirol]

I maxed out my 770M GPU @930MHz with ASUS GPU Tweak and increased mem to 4200MHz. Unfortunately XTU doesn't allow higher than 34 multiplier on 4 cores 😞

[X-ROG]

Bear in mind that the 'CPU' now has:

CPU cores
GPU cores
VRMs
PCH

all built into one piece of silicon. So it will run 'hot' versus last gen, for example, especially if you overclock as the VRMs and CPU are both working harder. Undervolting is definitely worthwhile if you can as the opposite is true.

The only other major ICs (well, Flipchip ones) inside the G750 is the Nvidia GTX on the other fan and the Thunderbolt one, which is passively cooled.

What the thermal paste lacks in ultimate performance it makes up for in longevity. Bear that in mind if you're replacing with another 🙂 Also note if you're thinking of 'improving' the cooling - those metal bars that screw down the heatsink are supposed to be flexible. It's designed not to overtighten, avoiding crushing the small BGA elements underneath. The only other route of avenue I can think of is perhaps a light lapping of the copper base if you're unhappy with the finish, but don't take off too much as the tolerances as small.

[Anvirol]

I ended up using -59mV on CPU and 34x - 36x multiplier. I've been playing, doing 3D graphics and all kinds of every day usage and also stress testing. So I can say that it's stable now.

Undervolting really helps with temps and my CPU is actually running cooler than stock settings, but with 2x higher multiplier.

[roryh86]

Anvirol wrote:
I ended up using -59mV on CPU and 34x - 36x multiplier. I've been playing, doing 3D graphics and all kinds of every day usage and also stress testing. So I can say that it's stable now.

Undervolting really helps with temps and my CPU is actually running cooler than stock settings, but with 2x higher multiplier.

hehe I'm at -58 mV too. It seemed stable for a while at -70 mV and then randomly crashed after a while in BF3. It's been good so far. Have you done a lot of Cinebench OpenGL GPU tests? Because I've noticed that when you have the VGA overclocked/maxed out, it runs stasble if CPU is at stock, but when you increase CPU multiplier, it causes the VGA to throttle in Cinebench and give a very bad GPU score of like 20 fps (vs 60fps). When you start lowering CPU offset, this problem starts going away though. At -58, I have CPU and VGA maxed out with 67 fps Cinebench.

[Anvirol]

It seems to me that every time I push my GPU memory overclock higher, the more my CPU slows down. I'm not sure if it's downclocking or throttling cpu usage, but something strange is indeed going on.

It doesn't really affect games, as CPU power is ample, but in benchmarks like 3DMark11 I see decreases in physics score.

[roryh86]

Anvirol wrote:
It seems to me that every time I push my GPU memory overclock higher, the more my CPU slows down. I'm not sure if it's downclocking or throttling cpu usage, but something strange is indeed going on.

It doesn't really affect games, as CPU power is ample, but in benchmarks like 3DMark11 I see decreases in physics score.

That means your overclock is unstable. Try decreasing CPU voltage when you overclock GPU to lessen the total voltage of your system which causes the instability.

[kingkaan]

Mine was at the -70 too and i had no problems bf4 beta kept crashing after a while and also my pc started randomly restarting every 2 days and when i opened xtu it said it crashed so clocks were reset to defaults..what is a stable clocks for this cpu? what are u guys using? i have the same cpu 4700hq... i pulled the offsets down to 59 and i benchmarked it lost 5 points. but i have no idea if its stable now.