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OC Noob 2600K Just Want 4GHz - Am I Doing it Right?

post #1 of 8
Thread Starter 
Please help an OC noob out. All I want is a 4GHz overclock on my 2600k, but I've had a terrible track record with overclocking attemps. They say Sandy Bridge is dead easy...

But from what I've seen, I should be able to achieve 4GHz with much less voltage than I'm using:

- CPU Clock Ratio: 40x
- V-Core: Set to 1.250v, but the BIOS' stats page reports 1.200v (which is correct? the disparity is even bigger at lower voltages)
- BCLK/DMI/PEG: 1000 (100.0MHz)
- Muti Step Load Line: Disabled
- Internal CPU PLL Overvoltage: Disabled
- Real Time Ratio Changes in OS: Disabled
- Turbo Boost: Disabled
- Multi Threading: Disabled
- C1E, C3/C6 and EIST: Disabled
- Memory Performance Enhance: Extreme
- And I'd alredy manually set my RAM to it's rated 1600MHz, 8-8-8-24, 1.5v.

RealTemp reports 52-58°C under full IBT load. Ambient temp is 24°C.

Am I doing it right?

I had a lower Vcore set, and it was stable for an hour in Prime, but the it crashed to blue screen after a few seconds of IBT. Now it's had 90 runs of Very High IBT, without errors or blue screens.

Speaking of blue screens, why is that the only thing that happens when this machine is unstable? Instead of giving errors in Prime etc., it just crashes to blue screen...

Specs:
2600K with Noctua NH-D14
GA-P67A-UD7-B3
GTX 580
X-Fi Titanium HD
Intel 320 SSD (80 and 120GB)
OCZ ModXstream 600w PSU
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post #2 of 8
1.2 volts sounds pretty good at 4.0 to me.
OG TRIPPLE OG
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OG TRIPPLE OG
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post #3 of 8
This is only for D2 2600k procs!!! (use CPU-Z and check by: "Revision" to see if yours is D2 or...

go to bios and load default settings (this will reset your settings and you can start all over again )

I'll give you my settings and it wil OC an 2600k till 5.2GHz!!! (5.0GHz for 24/7 gaming)
I use the ASUS P67 Deluxe mobo but the settings will probably be the same name in your bios i guess...

so leave EVERYTHING on AUTO except these things:

C1E: Enabled
EIST: Enabled
Set Manually Tuning on
Leave BCLK/PEG frequency at 100
Turbo ratio: Enabled (by all cores)
choose a clockspeed (start with 44 --> 44x100=4.4GHz --> all 2600k's will get 4.4GHz with decent cooler!)
Internal PLL Overvoltage: Enabled
Load-line Calibration: 75%
VRM Fixed Frequency Mode: 350 (this is best once going over 48x100)
Phase Control: Full phase mode
Duty Control: Current balance (NOT Thermal balance)
Cpu voltage: Manual and choose:
1.240-1.260V for 44x100
1.3-1.375V for 44-47x100
1.4-1.5V for 48-50x100
1.515-1.535V for 50-52x100 (sometimes 54x)

ONLY DO THIS IF YOU KNOW WHAT YOUR DOING!!! and keep your temps below 70°C while testing (use IntelBurnTestV2 with Standard RAM settings and Choose 8 Threads for your 2600k --> you can MAX the RAM but then it stresses even more and takes a while longer to complete the test, also temps will rise)
If the temps ar OK they will NEVER reach that while gaming so your safe! (Or you can overclock some more and don't test it by IntelBurnTestV2 but by playing games )

anyway: I'M NOT RESPONSIBLE IF YOU DAMAGE YOUR PC!!!
Edited by ASUSfreak - 6/19/11 at 2:45pm
   
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post #4 of 8
Thread Starter 
I have vdroop from 1.216v to 1.149v during load. I know load line calibration setting is to fix vdroop, but even with the v-droop my CPU appears completely stable. Should I enable LLC, or leave it off?
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post #5 of 8
Quote:
Originally Posted by Oubadah View Post
Should I enable LLC, or leave it off?
I dunno, I don't think it harms your computer when its on/off...

But when it's stable, it's stable right...

CPU-Z shows the best Voltage.

And what is your OC now? Did my info helped?
   
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post #6 of 8
what is the vrm is it useful?
I'm stable so I guess im fine.
I still want to know what it does and is 350 the best even for 4.5ghz?
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post #7 of 8
Hmmm With the 2600K D2 rev and P8P67 Deluxe Rev3.0 I hit stable 4.80Ghz at 3.65V, so Voltage may vary ±0.15 I'd say, depending on the chip and everything.

And to be honest you went in a really dangerous place going over 1.50V on your PCU Voltage dude, people only do that on Nitrogen cooling
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post #8 of 8
I see that you have disabled the some of the power saving settings. For SB unlike previous platforms it won't hurt your OC at all, and will just save power/money and the lifetime of your CPU.

Enabling Turbo Boost/Changes in OS, C1E, C3/C6, EIST doesn't have any negative effects, so you probably want to turn them on. (The only exception is if you are using offset, then you want to disable C3/C6)

Put PLL to 1.7, it will increase stability as well as lowering temps.

I believe that on GB mobos LLC goes from 1-10? If so set it at 5-6 to reduce vdroop as much as possible without having it spike.

Try voltage at 1.2 to start with and raise it if you can't boot/are unstable.

For Sandy Bridge the best stability test is actually Prime95 blend with 90% of your available RAM. You can configure it to do a quick stability test in between changes in the BIOS.

Since the 1344/1792 FFTs are the hardest ones to pass, you can use them for a short test. When P95 opens up hit 'custom', and fill in 1344/1344 or 1792/1792 in the FFT slots. Put in 90% of your available RAM (usually 1.5 GB below what you have overall), set the time to run to 1 minute, and start it. Run them both for 15 minutes, and if it passes lower vcore. If it doesn't, raise the vcore.

If you are getting lots of VCCIO-related BSODs, increase the VCCIO/VTT one or two notches and try again.

Once you are 1344/1792 stable run a 12+ hour blend with 90% RAM to make sure you are 100% stable. If you can pass that you are 24/7 stable and your system will probably never crash because of the OC.
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