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Overclocking Soon

post #1 of 6
Thread Starter 
Hey guys,

I will very shortly (woohoo!!!) be bringing my sig rig online. I just have to wait for my GPU and an 8-pin extension cable to get here and then I'm good to go. I'm planning on overclocking my i5-2500k to 4.5ghz ONLY (although I haven't ruled out going further if it turns out to be a good chip) and was looking for some general advice. I've done a lot of reading and pretty much everyone here agrees 4.5ghz is easy as pie for the 2500k - my question, however, is how to begin? Should I just try setting the multiplier at 45x straight away or do a combination of multiplier increase + Vcore increase? I've seen some people hit 4.5ghz at fairly low volts but I'm thinking 1.3v might be a good place to start - maybe set the multipler at 4.5ghz with 1.3v Vcore and see what happens?
post #2 of 6
I would first turn up VRM and LLC to account for the new load requirements.

Then I would jack up the multiplier and VCORE slightly, then test if it is stable.

If it is, you can slowly take the vcore down and keep stability testing.
2500k
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2500k
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CPUMotherboardGraphicsRAM
2500k @ 4.6 1.27V Asus p67 Pro SLI 560 TI Ripjaws X 1600 2x4GB 
Hard DriveCoolingOSMonitor
Crucial C300 + Spinpoint F3 Noctua N-D14 Win 7 x64 LG 1920x1080 
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Das Professional NZXT 750w Hale90 Antec 600 M60 
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ATH AD700 
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post #3 of 6
Firstborn
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i7 2600K @ 4.5 GHz 1.320 Vcore Gigabyte UD3 GTX 580 Lightning XE @ stock Ripjaws 16GB 1600Mhz 
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1TB WD Black + 120GB Intel 510 ASUS 24X W7 x64 Dell 24" 
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Firstborn
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CPUMotherboardGraphicsRAM
i7 2600K @ 4.5 GHz 1.320 Vcore Gigabyte UD3 GTX 580 Lightning XE @ stock Ripjaws 16GB 1600Mhz 
Hard DriveOptical DriveOSMonitor
1TB WD Black + 120GB Intel 510 ASUS 24X W7 x64 Dell 24" 
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Cheap K200 AX850 CM HAF X MX518 
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post #4 of 6
Set the multiplier to 4.5 and then start the voltage at 1.26v, and work your way up until you don't BSOD. You might have to further tweak your OC by disabling C3/C6 states, and increasing your PLL, but until then, just increase the multiplier and the core voltage.
post #5 of 6
Another good starting point can be found here: http://www.clunk.org.uk/forums/overc...beginners.html

I would not worry about adjusting PLL yet. Do what the others have said, also disable Internal PLL Overvoltage for now, your LLC should be the 2nd to the highest that it can go. I do not know ASrock boards, on my asus it's Ultra High, one setting below max. Next set multiplier to 45, and I would start at 1.275v. If it is stable and you do not BSOD, decrease voltage. If you get a BSOD right away, but can boot into windows, increase voltage by .005 incriments until you cease to get BSOD.
Overkill
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Overkill
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i7 2600k Asus P8Z68 V-Pro EVGA GTX-580 GSkill 8GB 
Hard DriveOSKeyboardPower
M4 SSD 64GB Samsung F3 1TB Windows 7 Pro Razer Lycosa Mirror Corsair Pro Series 850W 
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post #6 of 6
Thread Starter 
Sweet, thanks for all the advice! Still waiting on my card in the mail but as soon as it gets here it's game time
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