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I7 2700k Overclocking Thread! - Page 4

post #31 of 55
Quote:
Originally Posted by optiplex View Post

Cele303 , mind share bios setting for 5ghz stress stable?
Thanks

Overclocking SB is very easy, multiplier at 50, pll overvoltage enable, disable all power savings (c1, c6, speedstep etc), increase thermal power limit up to 150%, use LLC 75% or 100% (if you like your chip to slightly vdroop then 75%, if you like overvolt than 100%) and find your cpu voltage but stay below 1.40v for 24/7, this chip was able to run 1.37v 100% LLC at 5.0ghz
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post #32 of 55
Hey everyone, I'm just new to this overclocking frenzy so please don't laugh at me if I come out with the most silliest questions, I really do need some help/advice with this =/

Anyways I got myself the Intel i7-2700k with the Z68X-UD4-B3 Gigabyte Motherboard, Nvidia GTX570, 4x2GB Kingston Memory (1600mhz), Asetek Water Cooling 570LX...

I have been able to overclock the CPU to 4.60GHz with the multiplier set at 100x and the core voltage being 1.35v

I have tampered with the memory also, i've selected the extreme option (there's normal & turbo also) with Extreme being the highest. It's sitting at 1600... however from start up it takes quite sometime to get to the desktop window (around 53 seconds). It's booting with the 128GB SATA III Crucial M4 SSD. Before I overclocked it, it was around a (37 second boot from power on.)

I think I've done something wrong, hell I was even going to pay someone to over clock it for me so I don't **** it up!!! Anyways I ran real temp 370 software to see what the heat was like when idle. The idle cpu temperature was around 27'c - 36'c ... when I ran the xs test, it checked the temp while running at 4.6Ghz. And it reached around 42'c to 53'c.

Can anyone explain if I need to change the memory speed, voltage or whatever it may be, I just don't get why the boot up time is very slow, almost 20 seconds slower... and I apologise for the little knowledge I have with overclocking.

Any help will be appreciated!
biggrin.gif
post #33 of 55
I have a 2700k with hyperthreading enabled and as I get to learn more about using offset mode in the Maximus IV Extreme (P67) bios I will try going for high stable clocks.

Currently, things are looking good for a 12h prime95 test, now 10 hours into it:

• x40 turbo multiplier, with 100 bclk for a 4GHz clock
• 1.128V under primer95 load
• 0.848 V idle
• negative 0.160 V offset that does not crash when cpu is at idle state (BSOD'ed with 0.180 V and 0.170 V)
• 25% load line calibration
• 8GB DDR3 ram, 9-9-9-24, running with 1T instead of 2T, 1.500 V
• Temps at max 63-66-63-61

The cpu and the Noctua NH-D14 cooler are both lapped flat, though I suspect I have applied too much thermal paste *again*. I fear I might not get good temps at 4.5GHz.

When trying to remove the cooler to reapply the thermal paste, I thought the screws were still fastened, because I could not remove the cooler off the IHS. Apparantly the parts clinged together well, perhaps because of the large amount of thermal paste and the lapped surfaces.
Edited by Decoman - 5/5/12 at 7:43am
post #34 of 55
Quote:
Originally Posted by Cele303 View Post

I'm playing with brand new i7 2700K and MIVE cooled with Noctua NH-D14 and what an amazing chip it is! Batch is 3152B027
First power on and oc straight to 5.0GHz in normal room conditions with 2x GTX 580
644
After some time tweaking and familiarizing with motherboard best x58 5.8GHz 2 core boot with open window and colder vga GTX 570
554
I think this chip will be stress stable 5.0GHz around 1.35V - 1.36V, I wanted to use Apacer Ares 2400 9-11-9 but they are too tall for Noctua so I'm using STT hypers which are pretty bad with SB compared to Gulftown so probably no 2D benchmarks, but will do some 3D benchmarks

:eek.gif: That's the best SB chip I've seen on OCN!
yeh..stt hypers are good for AMD..That Samsung RAM does real good with SB
 
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Thuban Powah!
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post #35 of 55
I have been fiddling with reseatings of the cooler, while also trying out adding two washers to *maybe* add pressure to the IHS (did not seem to lead to any improvement at 4GHz *shrugs*).

Going with easy 4.6 GHz now using the quick level up option. Been stable in prime95 for 10 min, with temps around 67 to 74 max for 'blend' and 'in-place small fft's', vid at 1.3561, -005 offset and 1.288V on load with prime95. Looking forward to increase the offset and later go higher towards the 5GHz clock. smile.gif Temps seemed to stay around 69 deg on average with 4.6GHz on auto volt.

Load line calibration is still at 25% from my 4GHz overclock and I am not sure if I should increase it if it leads to more heat. Volt protection is at 110%. I don't understand how that feature would work at present time.


Update: I seem to have hit a offset limit with a 4.7 taget clock. Failing during prime95 stresstest leading to bsod, with -0.055 V offset. Current working Vcore with prime95 running at 4.7 GHz for 9 minutes is 1.304-1.312 V on load (VID 1.3611), having 'load line calibration' at 75%. Max temps were beween 70-75 deg C on load.

2700k HT enabled.

It seems as the temps does not really lower that much when lowering Vcore for a particular target clock. Best reduction in max temps I have seen so far, are one degree difference on all four cores, which does not seem like much I must confess. I guess I expected the max temps to be much lower. Maybe the hyperthreading is making it all hotter?

Going from 4.0 to 4.6 GHz was a 15% increase in clock speed. The volt increase was apparently only about 13 percent for the clocks, with load line calibration value of 25 and 50%.
Edited by Decoman - 5/7/12 at 8:17am
post #36 of 55
Hey guys is this a good clock? Voltage for speed wise
Prime 95'd for 8 hours.
http://valid.canardpc.com/show_oc.php?id=2359564
post #37 of 55
@Prpntblr95
It seems similar to my 2700k. I had to up the offset for the vcore when the blend test in prime95 failed after four hours. Currently running with max vid 1.3661+ 0.040 offset = max 1.4061 volt for a 4.8 GHz overclock before vdroop (unless I have misunderstood something ofc).
Edited by Decoman - 5/12/12 at 6:25am
post #38 of 55
I need some help fella's, I have the AsRock Extreme 3 Gen 3 Mobo and I can't find how I can get it off the "Turbo" setting and get it past 4.8ghz

Any and all input is welcome, thank you in advance

Sean L
post #39 of 55
hey all,

had my 2700k for a few months now and loving it from my amd 1055t @3.92ghz. Nice to have my new proc stock at my amd oc speeds. Im stock now as no need for the oc with a single 580 but when i played with it i could do 4.6 using asus auto oc utility. Bios oc i can get 5.1 @ 1.43v (1.39v in bios) using a H100 p/p and get 52c-ish with HT enabled. I can also do 5.3 @ 1.46v but bsod after booting into windows. I was pretty lazy with my manual settings and just copied it from a list in the asus rog forums in a guide. I had to drop my 16gb 1866 ram to 1333 but only to keep the ram volts under 1.5v, if i had of gone with 1.6v+ im sure i could have kept the 1866 speeds.

Anyways loving this chip, sexy on my Asus RoG Maxium Extreme IV mobo.
post #40 of 55
http://valid.canardpc.com/show_oc.php?id=2464798

any tips to help me get the vcore down? I have played with most of the settings but it doesn't want to run stable at anything under ~1.45v for 5ghz. Anyone else ran into this problem?
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