Need help overclocking

NomNom

NomNom

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Hi there all

So I want to know how far I can push my Pc before it's considered too far. My specs are in my sig. My CPU is a i5 760 with a stock clock of 2.8, I am unable to push it past 3.3 (bios won't let me for some reason) but I have seem forum members with my CPU overclocked to 4GHz in their sig, how is this possible? :confused:

I am very new to overclocking, I have taken 2 screenshots (edited into 1) of my bios menu and one of the values is in red which is a bit worrying...as always any help will be appreciated. :)

1g1637.jpg
 
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Hi,

Some things to know regarding overclocking:

(1) Overclocking has risks. You could fry, or permanently damage your CPU.
(2) Not all CPU's are created equal. You may get a very overclockable cpu, or one thats quite poor at it.
(3) Having a proper fan and heatsink for overclocking is a must. I wouldnt push a CPU on a stock fan very far. High risk of over-heating.
(4) Air-flow of the case is important. Theres little point having an excellent CPU fan and heatsink, if that hot air is just going to sit in your case.
(5) You need to understand the basic math behind overclocking - the Bus/Core ratio, and how that affects your memory and CPU speed.
(6) Proper testing of a overclocked CPU is important. Some people recommend running the CPU at 100% usage for 24 hours before it can be considered stable. Most consider 8 hours sufficient.

If you can get a I7 2600K or i5 2500K, thats just the easiest way to do overclock, and you simply set it to the speed you would like and test to see if the cooling can handle it.

Hope this helps!
 
Archer said:
Here you go :) Based on the 750 but they are practically the same chip so it should get you the same result
http://www.bit-tech.net/hardware/cpus/2009/09/21/overclocking-intel-s-core-i5-750/3

/insert the usual disclaimer here :p
Click to expand...

Would I still follow that guide if my motherboard isn't the deluxe edition?

DarkWhisperer said:
Hi,

Some things to know regarding overclocking:

(1) Overclocking has risks. You could fry, or permanently damage your CPU.
(2) Not all CPU's are created equal. You may get a very overclockable cpu, or one thats quite poor at it.
(3) Having a proper fan and heatsink for overclocking is a must. I wouldnt push a CPU on a stock fan very far. High risk of over-heating.
(4) Air-flow of the case is important. Theres little point having an excellent CPU fan and heatsink, if that hot air is just going to sit in your case.
(5) You need to understand the basic math behind overclocking - the Bus/Core ratio, and how that affects your memory and CPU speed.
(6) Proper testing of a overclocked CPU is important. Some people recommend running the CPU at 100% usage for 24 hours before it can be considered stable. Most consider 8 hours sufficient.

If you can get a I7 2600K or i5 2500K, thats just the easiest way to do overclock, and you simply set it to the speed you would like and test to see if the cooling can handle it.

Hope this helps!
Click to expand...

Lol thanks I already know all of that though :)
 
So I keyed in all the settings from the guide as best I could cause the bios is slightly different to my one and then I saved and restarted my Pc and nothing, it wouldn't switch on. So I switched it off and switched it on again and it told me that the overclocking failed, so I restored my previous setup of 3.3

So it didn't work :(
 
What incremements can you use for the bclk?
Start with something that would give you 3.3ghz
If it boots, up to 3.4 etc etc. It could just be that you chip doesnt like 4.0, but might work at 3.9 for example

If you're still stuck, PM the peanut without clothes, iirc he has the same chip
 
Archer said:
What incremements can you use for the bclk?
Start with something that would give you 3.3ghz
If it boots, up to 3.4 etc etc. It could just be that you chip doesnt like 4.0, but might work at 3.9 for example

If you're still stuck, PM the peanut without clothes, iirc he has the same chip
Click to expand...

The thing is I don't know what will give me 3.3 manually, I just used the BIOS to make it 3.3 since that's how high it will go....Not sure I even want to keep trying, it was a bit scary when my Pc didn't want to restart, I know the risks and all I just thought there was a sort of list of what to put in and where. :o

I think I will give it a shot again when I have cash as backup incase I stuff up my Pc cause at the moment I don't so if I break it I won't have a Pc to use. 3.3 is better than nothing right?

I tried one more guide and my Pc booted and went into windows however all I got was a black screen with a frozen loading mouse, this is the guide I tried: http://www.overclock.net/t/875667/asus-p7p55d-overclock-template-for-i5-760

So I think I'm done now :)
 
Last edited:
You've probably got a motherboard that limits the FSB overclock.

I know I had a motherboard a few years back that limited overclocking my E5200 to 3.325 Ghz. i.e. max was 266FSB since the E5200 has a 200FSB as stock. I could only increase the FSB by 33%.
 
Just one thing I've noticed in the screenshot - enable SpeedStep. That will significantly reduce the heat produced by the CPU when you're not doing any intensive CPU work.
 
Try;

CPU Level Up - Manual
CPU Ratio - 20
Xtreme phase - Full phase
Bclk - 180
DRAM - 1440
QPI - Lowest value

DRAM Timings - Set to module spec

vCore - 1.42
IMC - 1.32v
DRAM - Set to module spec
CPU PLL - 1.7v
PCH - 1.15v

LLC - Enabled
Spread Spectrums - Disabled
 
SaiyanZ said:
You've probably got a motherboard that limits the FSB overclock.
Click to expand...

Well that would suck, how do I find out? Cause my motherboard is of the same model range as nakedpeanut has more or less the same motherboard as me, although mine is of a lower range.

Silverlight said:
Try;

CPU Level Up - Manual
CPU Ratio - 20
Xtreme phase - Full phase
Bclk - 180
DRAM - 1440
QPI - Lowest value

DRAM Timings - Set to module spec

vCore - 1.42
IMC - 1.32v
DRAM - Set to module spec
CPU PLL - 1.7v
PCH - 1.15v

LLC - Enabled
Spread Spectrums - Disabled
Click to expand...

How do I find out what the DRAM Timings are? I have the following ram

Also must I disable Intel Speedstep tech?

I saw while I was putting the settings in that the target speed for the ram was 1440MHz, why not 1600MHz? cause I want the ram to go at 1600MHz and the CPU to about 3.8GHz maybe even 4.0GHz if possible.
 
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I doubt your mobo is FSB limited, you wouldnt even have the higher settings available if that was the case. I think thats more applicable to older LGA775 systems

Your RAM settings are in that link - the latencies. You can also check CPUID
So you want 9-9-9-24 for the first 4 RAM timing settings. All the rest you can leave as is. And voltage at 1.5V
 
Ok so from Silverlight's suggestion, this should be my settings?


5umxlh.jpg



DRAM Timing before:


16gmtz4.jpg



DRAM Timing after:


209n2ok.jpg



Please note that for the "CPU PLL Voltage" I can't change it to 1.70 it will only go to Auto or 1.80 will this be a problem, if so how can I fix it?

2ugoz76.jpg
 
Your voltage is WAY to high. I would think that you are at risk of damaging it...

I have the exact same processor and I have a stable 4.0ghz OC. I'm out to supper at the moment, so I will try help you when I get back :)
 
@NomNom, set OC from CPU-Level up to manual or disabled. i.e. Disable all the Auto overclocking crap.

You didn't disable the spread spectrums and enabled LLC in your screenshots.

A lower PLL voltage gives stability in most cases and lowers the heat generated. Your board is quite sucky if it can't undervolt the PLL...Set it manually to 1.8v so it doesn't overvolt it.

The difference between 1333MHz RAM and 1600MHz is negligible, if your CPU and board can run 180 bclk stably then you can try 200 bclk and that'll put your RAM at 1600MHz. Lets concentrate on the CPU OC for now. Corsair Vengeance isn't overclocking friendly either.

Archer said:
I doubt your mobo is FSB limited, you wouldnt even have the higher settings available if that was the case. I think thats more applicable to older LGA775 systems
Click to expand...

Uhmm if he's allowed to set 500 bclk in BIOS that does not mean it can run at 500 bclk. Different 1156/1366 boards do achieve different bclks. Most of the P55/H55 and X58 boards should achieve 200 bclk quite easily however.

Ono'rach said:
Your voltage is WAY to high. I would think that you are at risk of damaging it...

I have the exact same processor and I have a stable 4.0ghz OC. I'm out to supper at the moment, so I will try help you when I get back :)
Click to expand...
The voltages I've suggested above are conservative and won't kill anything, don't get your panties in a twist...

Obviously once everything is stable you should try lowering the vCore and IMC voltage till it's unstable then up it 1/2 notches.
 
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Silverlight said:
@NomNom, set OC from CPU-Level up to manual or disabled. i.e. Disable all the Auto overclocking crap.
Click to expand...

I can't disable it I can only select a value or set it to Auto.

Silverlight said:
You didn't disable the spread spectrums and enabled LLC in your screenshots.
Click to expand...

I must have overlooked that I won't when I actually attempt the overclock, otherwise is everything else ok?
 
Last edited:
Silverlight said:
Uhmm if he's allowed to set 500 bclk in BIOS that does not mean it can run at 500 bclk. Different 1156/1366 boards do achieve different bclks. Most of the P55/H55 and X58 boards should achieve 200 bclk quite easily however..
Click to expand...

Uhmm if he can set it to those values then its not limited by the motherboard now is it? (eg the way a i5 2500 is limited due to not having an unlocked multplier)... Which was what I was responding to... Never said anything about whether its attainable, its just not limited by the mobo
 
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