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Final try to reach a stable 5.0Ghz on i5 2500k

post #1 of 10
Thread Starter 
I am struggling for a while now to get my i5 2500k stable on basicly anything above 4.5Ghz, been trying all kind of settings but nothing seems to help, i made a topic about this before and got some help which i appreciate a lot, but it didnt work out, i wanna give this one more try to see if i can get it stable. (http://www.overclock.net/intel-cpus/...lems-need.html)

My ultimate goal at this moment is 5.0Ghz

The hardware i'm using is:

- i5 2500k
- Asus p8p67 Pro
- Corsair Vengeance 2x2GB 1600Mhz 9-9-9-24

I have been using several guides on the net, as well as on OCN, such as http://www.overclock.net/intel-gener...uide-p67a.html which was very informative, thumbs up for that! however i cant get anything stable even with use of these guides.

I started with:

- Updating BIOS to latest version.
- Loading default BIOS settings.
- Enabling PLL Overvoltage.
- Enabling C1E, C3/C6, EIST.
- Disabling Intel Thermal Monitor.

Other then that, i left everything on default/AUTO.

BIOS Reading:


Stock - 3.3Ghz / 3.7Ghz Turbo

Vcore: 1.224v
Dram: 1.500v
VCCIO: 1.050v
PLL: 1.793v
PCH: 1.050v

4.0Ghz

Vcore: 1.224v
Dram: 1.503v
VCCIO: 1.062v
PLL: 1.796v
PCH: 1.050v

4.5Ghz

Vcore: 1.280v (1.376/1.392v on CPU-Z)
Dram: 1.506v
VCCIO: 1.068v
PLL: 1.793v
PCH: 1.050v

4.7Ghz


Vcore: 1.376v

4.8Ghz

Vcore: 1.416v

4.9Ghz


Vcore: 1.456v

5.0Ghz

Vcore: 1.464v


When i go for a AUTO settings at 4.8Mhz clock and let Prime95 run a blendtest, i am getting a BSOD 124 after about a minute.

BIOS overview:





I have been trying some manual settings to reach 4.8 / 5.0Ghz such as:

VCCSA Voltage: Auto
VCCIO Voltage: Auto / 1.10v
CPU PLL Voltage: 1.75v
Auto PLL Overvoltage: Enabled
PCH Voltage: Auto
VRM Frequency: 350
Duty Control: Extreme
Phase Control: Extreme
CPU Capability: 120%
Digi + VRM Current Capability: Auto - 100%
CPU Multi 48 by each core
CPU BCLK: 100
CPU voltage: 1.45v Manual
DDR Voltage: Rated stock volts
Spread Spectrum: Disabled
LLC: Ultra High

Nothing seems to work! seriously am i doing something terrible wrong? or do i have a garbage chip? this is driving me crazy.
How can i get my CPU to 4.8 / 5.0 Ghz stable, not even taking temps into account right now.

EDIT: Added BIOS pics
Edited by rck1984 - 4/18/11 at 1:37pm
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post #2 of 10
You don't have a "garbage" chip - I don't know why everyone with a SB chip seems to think that their chip is crap because it can't hit 8GHZ on .09v - your chip is average, most users can't get much above 4.5GHZ. Unless your trying to overclock for synthetics or to just say "i did it" you aren't going to see any difference in games between 4.5 and 5GHZ, right now your 5850 is your most limiting factor.
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post #3 of 10
Thread Starter 
Quote:
Originally Posted by appleg33k85 View Post
You don't have a "garbage" chip - I don't know why everyone with a SB chip seems to think that their chip is crap because it can't hit 8GHZ on .09v - your chip is average, most users can't get much above 4.5GHZ. Unless your trying to overclock for synthetics or to just say "i did it" you aren't going to see any difference in games between 4.5 and 5GHZ, right now your 5850 is your most limiting factor.
I do know 4.5Ghz is nice, i do agree i dont need more in games then 4.5Ghz and yes, my 5850 is my limiting factor at this moment. But i'm getting a water cooling setup by the end of the month and i'm trying to push my CPU some more, absolute goal would be 5.0Ghz for me. I am not sure about "most users cant get much above 4.5Ghz" as i have read a lot of topics with people claiming getting to 4.8 to even 5.2Ghz easy, i do know every chip is different but i cant believe my limit is 4.5Ghz, besides that i am still learning stuff while overclocking, so it might be something that i am overlooking myself.
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post #4 of 10
Quote:
Originally Posted by rck1984 View Post
I do know 4.5Ghz is nice, i do agree i dont need more in games then 4.5Ghz and yes, my 5850 is my limiting factor at this moment. But i'm getting a water cooling setup by the end of the month and i'm trying to push my CPU some more, absolute goal would be 5.0Ghz for me. I am not sure about "most users cant get much above 4.5Ghz" as i have read a lot of topics with people claiming getting to 4.8 to even 5.2Ghz easy, i do know every chip is different but i cant believe my limit is 4.5Ghz, besides that i am still learning stuff while overclocking, so it might be something that i am overlooking myself.
I can get 4.8 with the settings you have posted you are doing everything right. It seems like your chip is just at it's limit.

Why do you want to go watercooling?? My zalman air cooler keeps my i5 below 70 @ 4.8 and around 72- 73 @ 5ghz

Set your memory to the standard specs don't leave it on auto. Have you tried alittle higher vcore for 4.8ghz like 1.465v ? Why is your llc on auto?

Why do you have "can adjust in os" for your core multiplier my bios shows all 4 core multipliers seperately
Edited by Chewy - 4/18/11 at 1:35pm
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post #5 of 10
Thread Starter 
Quote:
Originally Posted by Chewy View Post
I can get 4.8 with the settings you have posted you are doing everything right. It seems like your chip is just at it's limit.

Why do you want to go watercooling?? My zalman air cooler keeps my i5 below 70 @ 4.8 and around 72- 73 @ 5ghz

Set your memory to the standard specs don't leave it on auto. Have you tried alittle higher vcore for 4.8ghz like 1.465v ?
Always been wanting proper water cooling, and i like the sillent factor of it.
I think i went upto 1.470v before, still resulting in a 124 BSOD.
Edited by rck1984 - 4/18/11 at 1:35pm
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post #6 of 10
Your more than likely going to have to up the voltage and drop your ram timings to take some ease off the IMC. I've see several SB's that take 1.5+ to get to 5Ghz.

By the way, please change Mhz to Ghz.
post #7 of 10
my settings are

VCCSA Voltage: Auto
VCCIO Voltage: 1.10v
CPU PLL Voltage: 1.72v
PLL Overvoltage: Enabled
PCH Voltage: Auto
VRM Frequency: 370
Duty Control: Extreme
Phase Control: Extreme
CPU Capability: 130%
Load Line Calibration: Extreme
CPU Multi 48 by each core showing in bios
CPU BCLK: 100
CPU voltage: 1.430v Manual no offset
DDR Voltage: + .1 over rated voltage, Stock timmings
Spread Spectrum: Disabled

Are those your current specs in your bios pictures???

If so turn off offset voltage and do it manualy
Edited by Chewy - 4/18/11 at 1:45pm
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post #8 of 10
Thread Starter 
Quote:
Originally Posted by Chewy View Post
my settings are

VCCSA Voltage: Auto
VCCIO Voltage: 1.10v
CPU PLL Voltage: 1.72v
PLL Overvoltage: Enabled
PCH Voltage: Auto
VRM Frequency: 370
Duty Control: Extreme
Phase Control: Extreme
CPU Capability: 130%
Load Line Calibration: Extreme
CPU Multi 48 by each core showing in bios
CPU BCLK: 100
CPU voltage: 1.430v Manual no offset
DDR Voltage: + .1 over rated voltage, Stock timmings
Spread Spectrum: Disabled

Are those your current specs in your bios pictures???

If so turn off offset voltage and do it manualy
No those were the AUTO settings for getting 4.8Ghz, resulting in a BSOD 124
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post #9 of 10
Ditch the offsets. They are not and will NOT help you when you're trying to find a proper voltage. And a number of people have problems with idle freezing when using high offsets.

Set a manual vcore.
Set Loadline Calibration to Ultra high or Very high. (which ever one will give you about a 0.04v or lower BIOS drop from idle volts to full load volts, at about 1.40v in BIOS->1.36v load-1.39v load). Try to avoid setting it to Extreme, as this may make the vcore rise under load, which is best used only by benchers. So use whatever loadline avoids a vrise from your BIOS setting.

Try 1.40v MANUAL mode, loadline Ultra high or Very high, x48 multiplier.
See where that gets you.

If you crash, try x47 or x46; one of the two should be stable.
Then you can tweak the voltages from there.
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post #10 of 10
You just have a mediocre i5. Nothing more, nothing less. You need to give it more voltage, and better cooling to push it harder.

Mine does 4.8GHz, 1.40v. It takes 1.45v for 4.9GHz. Then 1.50v for 5.0GHz. Once you're at the limits of your chip, the voltages start to skyrocket.
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