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***The Official Core i5 Overclocking Thread***

currently im using:

CPU Voltage = 1.325
CPU VTT = 1.351
pch 1.8 = 1.700 (no idea what this setting does)
Ram voltage = 1.65


this is on a msi gd80 mobo with geil ultra ram (4x ratio @ 1600) 16 qpi ratio , my i5 running at 200x20 40c idle 75c load
 
Im running 200 x 20 as shown a few posts ago

CPU = 1.4v
CPU VTT = 1.3v
pch (which I think is the chipset) = auto. Doubt it needs much more as it doesnt deal with anything to intensive
RAM = 1.6v

Basically same speed as CSA but higher CPU voltage and lower VTT and RAM. When running IBT though the volts can drop to 1.328v for the core and it still runs fine
 
What settings have you disabled/enabled in the bios? Such as LLC etc. Im guessing most settings are on auto, spread spectrum disbaled, LLC disabled, eist disbaled etc. can't remember them all off the top of my head but im looking to get other peoples views and see their settings.
Would be helpful to me as im still waiting for some more coolers to come out before i buy one and overclock :)
 
Currently I have spread spectrum, C1E and EIST disabled. Did disable LLC but for some reason it made my core voltage shoot up to near 1.5v when under load!! Normally it drops but with LLC disabled it seemed to rise :confused: Others seem to be having success with it disabled though
 
42GHzstable.jpg


I know its only 5 passes at standard there but its the quickest way to do a quick stability test. Will try 10 passes at max later on.

1 question though, if I enable speedstep I get the 21x multi which is what Im using there. Speedstep doesnt seem to do anything though haha, at idle it still sits there at 4.2GHz so Im seeing no problems and all the benefits of an extra multiplier. Do you have to enable something else too so that it actually changes?
 
I know its not I5 but same skt but has anyone got any results for clocking a i7 860 and with what hardware.
 
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Think 1 or 2 show up in the middle of this thread somewhere, and they are also tested a bit here :)

Tried going for 4.3GHz but no luck there and getting close to 1.45v now in the BIOS. Think much over 200MHz base clock and you need to seriously start cranking up the VTT. Had mine at 1.38 and it was a bit more stable but still BSOD'd after 4 loops of IBT. Not sure what the max is for VTT but its showing red in the BIOS so will stop there :p Gone back to 4.2 and just seeing what voltages I can lower and will then move on to memory timings and such :) 4.2 was my target anyway, so glad Ive managed to hit it :)
 
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nice clock there ducky spud:)

which board are you using? i managed the 4.42ghz on the gd-65 with everything set to auto;) which kept it just a few points below the red.

im having a bit of trouble getting better memory timings though.
 
Hi guys, need a bit of help please and thought this was the most appropriate section to come to. I have just built a new system, the main components of which are i5 750, Gigabyte P55-UD3, and G-Skill 4gb 1600mhz 7-7-7-24 RAM.

It's the BIOS I'm struggling with...it defaults the RAM to 1333mhz (133 bclk) and the CPU to x20 (x21 for turbo), which is fine, however I want the RAM to run at 1600mhz. I selected the XMP RAM profile which automatically altered the bclk to 160 (increasing RAM speed to 1600) and the CPU multi to 16. Now the problem I've got is the turbo multi for each core also says 16 and sure enough I don't get any turbo kicking in in Windows.

I've tried enabling/disabling C1E and EIST etc but nothing I do seems to allow me to have any turbo. I'm not bothered about overclocking as I only have stock cooler, I just want the damn turbo to kick in!! Is this impossible due to changing the bclk?

Any help appreciated, thanks
 
Need to update my sig lol. Im using a GD-65 too, not had much time these last few days tho so nothing new. Busy all week too, but maybe next weekend i can have more of a mess :)
 
Ducky Spud said:
EDIT: turned off Load Line Caliberation or whatever its called, apparently Intel recommends this. Before I was running IBT and volts would drop down to 1.32, now they're shooting up to 1.48 and temps going to mid 70's. Is that normal? And is it better to run with it turned off? Seemed to be doing fine before
Click to expand...

In the GD-65 BIOS the LLC switch is broken ie. the wrong way around - so if you want it disabled, set it to enabled. I posted this is the MSI P55 thread a couple of weeks back. Keep Up!:D
 
I am currently running my Core I5 at 3,800mhz.

System as below running at 19x200 v1.3
Memory at 800 8.8.8.24 2T v1.65
HD4850 at stock

SuperPi 1M about 10.890s

3dmark01 - 66,682
3dmark06 - 13,900

All power saving features disabled so a constant 3,800mhz and temps are:-

idle - 43c
load - 69c
 
GoonerTCN said:
Hi guys, need a bit of help please and thought this was the most appropriate section to come to. I have just built a new system, the main components of which are i5 750, Gigabyte P55-UD3, and G-Skill 4gb 1600mhz 7-7-7-24 RAM.

It's the BIOS I'm struggling with...it defaults the RAM to 1333mhz (133 bclk) and the CPU to x20 (x21 for turbo), which is fine, however I want the RAM to run at 1600mhz. I selected the XMP RAM profile which automatically altered the bclk to 160 (increasing RAM speed to 1600) and the CPU multi to 16. Now the problem I've got is the turbo multi for each core also says 16 and sure enough I don't get any turbo kicking in in Windows.

I've tried enabling/disabling C1E and EIST etc but nothing I do seems to allow me to have any turbo. I'm not bothered about overclocking as I only have stock cooler, I just want the damn turbo to kick in!! Is this impossible due to changing the bclk?

Any help appreciated, thanks
Click to expand...

I have a Gigabyte P55-UD5 running the latest beta bios F5f with an i7 860. When I selected the XMP memory profile it changed the memory multiplier to 12 giving 1600mhz and it didn't change bclk.

Also had success with a mild overclock by just setting bclk to 151 with all the turbo and power saving stuff turned on. Runs with 22x multiplier when fully loaded giving about 3.3Ghz and uses 25x multiplier with just two loaded cores 3.7Ghz. 22 degrees at idle and stays below 70 fully loaded with all my noctua fans set to use the ulta low noise adapters. Silent, cool and quick which is exactly what I was looking for.

I found this turbo mode tool really useful (Currently using v6.8) along with a utility called loadtester where you can run several instances to load the processor and set the affinity to load specific cores.
http://www.hardforums.com/showthread.php?t=1417780
 
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i cannot seem to get above 3.2ghz is it my ram thats the problem ocz reaper 8GB 1333mhz ocz3rpr13334gk

what would you recommend me do drop down to some faster 4gb kit ?
 
just replaced my ram with this

Patriot Sector 5 G Series 4GB (2x2GB) PC3-12800 1600MHz Dual Channel

and put my old stuff on ebay, btw when ppl say decent watercooling can you say what kit your using please, ie fan speeds, size of rad, whats in the loops ? cpu/gpu pump and block type please im just trying to see if my temps are too high.

i managed a 3hr prime @ 3.8ghz, i just want to push it to 4ghz now.

i have a triple rad zalman fans @7.5v , EK supreme block a nvidia 295 with block on and a XSPC DDC 10w Pro Pump/Reservoir was getting 45 idle 63 under load.

Patriot Sector 5 G Series 4GB (2x2GB) PC3-12800 1600MHz Dual Channel
 
Ducky Spud said:
42GHzstable.jpg


I know its only 5 passes at standard there but its the quickest way to do a quick stability test. Will try 10 passes at max later on.

1 question though, if I enable speedstep I get the 21x multi which is what Im using there. Speedstep doesnt seem to do anything though haha, at idle it still sits there at 4.2GHz so Im seeing no problems and all the benefits of an extra multiplier. Do you have to enable something else too so that it actually changes?
Click to expand...

You need to set TJ Max to 100 to see the real temp.
 
My new installed core i5 setup running bios 1.4

v droop set to low, appears to be no disabled setting, only low and high

cpu 1.326v
vtt 1.325v
mem 1.65v
Geil Ultra Series mem from OCUK

Thermalright true with 1156 bracket.

prime stable so far for 4hours (and still running)

Needs more fiddling i think, it will also run 4.2ghz but volts jump from 1.42v idle to 1.48v once priming. Temps rise to 70-74c at 4.2ghz

i540ghzmem2000mhz.jpg
 
Well, here's my contribution to this thread. I'm still fairly novice when it comes to OC'ing though.

i5 750 @ 4.0 GHz
Asus P7P55D
4GB Ripjaw 9-9-9-24 @ 1600 MHz
Asaka X4 HSF

57762205.png


Still Blend-Priming as I type.
 
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Ducky Spud said:
That only using 1.3v? Not bad!! Need to test mine a bit more, just keep upping the speed and not altering the voltage, set it at 1.4 at the start, not willing to go any higher so see what I can clock to on it :p

...

4GHz IBT stable and not going over 60C :)
Click to expand...

Try to use more memory if you can 15sec per test isn't going to really stress your CPU.
 
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